Commit graph

60437 commits

Author SHA1 Message Date
Jean-Christophe PLAGNIOL-VILLARD
1ff5b1b411 at91: remove AT91_DBGU offset from dbgu register macro
to make the soc base specified at runtime instead of compiled time

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2011-07-28 15:07:28 +00:00
Jean-Christophe PLAGNIOL-VILLARD
92100c12ca at91: factorize at91 interrupts init to soc
they are the same except the default priority

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
2011-07-28 15:07:28 +00:00
Jean-Christophe PLAGNIOL-VILLARD
21d08b9d55 at91: introduce commom AT91_BASE_SYS
On all at91 except rm9200 and x40 have the System Controller starts
at address 0xffffc000 and has a size of 16KiB.

On rm9200 it's start at 0xfffe4000 of 111KiB with non reserved data starting
at 0xfffff000

This patch removes the individual definitions of AT91_BASE_SYS and
replaces them with a common version at base 0xfffffc000 and size 16KiB
and map the same memory space

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
2011-07-28 15:07:28 +00:00
Grant Likely
8e267f3da5 arm/dt: tegra devicetree support
Everything required to populate NVIDIA Tegra devices from the device
tree.  This patch adds a new DT_MACHINE_DESC() which matches against
a tegra20 device tree.  So far it only registers the on-chip devices,
but it will be refined in follow on patches to configure clocks and
pin IO from the device tree also.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-28 01:32:04 -06:00
Grant Likely
3ba7222ac9 arm/versatile: Add device tree support
For testing the dt work, define a dt-enabled versatile platform.

This patch adds a new versatile platform for when using the device
tree.  Add platform and amba devices are discovered and registered by
parsing the device tree.  Clocks and initial io mappings are still
configured statically.

This patch still depends on some static platform_data for a few devices
which is passed via the auxdata structure to of_platform_populate(),
but it is a viable starting point until the drivers can get all
configuration data out of the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-28 01:32:04 -06:00
Grant Likely
08a543ad33 irq: add irq_domain translation infrastructure
This patch adds irq_domain infrastructure for translating from
hardware irq numbers to linux irqs.  This is particularly important
for architectures adding device tree support because the current
implementation (excluding PowerPC and SPARC) cannot handle
translation for more than a single interrupt controller.  irq_domain
supports device tree translation for any number of interrupt
controllers.

This patch converts x86, Microblaze, ARM and MIPS to use irq_domain
for device tree irq translation.  x86 is untested beyond compiling it,
irq_domain is enabled for MIPS and Microblaze, but the old behaviour is
preserved until the core code is modified to actually register an
irq_domain yet.  On ARM it works and is required for much of the new
ARM device tree board support.

PowerPC has /not/ been converted to use this new infrastructure.  It
is still missing some features before it can replace the virq
infrastructure already in powerpc (see documentation on
irq_domain_map/unmap for details).  Followup patches will add the
missing pieces and migrate PowerPC to use irq_domain.

SPARC has its own method of managing interrupts from the device tree
and is unaffected by this change.

Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-28 01:32:04 -06:00
David S. Miller
4ba991d3eb sparc: Detect and handle UltraSPARC-T3 cpu types.
The cpu compatible string we look for is "SPARC-T3".

As far as memset/memcpy optimizations go, we treat this chip the same
as Niagara-T2/T2+.  Use cache initializing stores for memset, and use
perfetch, FPU block loads, cache initializing stores, and block stores
for copies.

We use the Niagara-T2 perf support, since T3 is a close relative in
this regard.  Later we'll add support for the new events T3 can
report, plus enable T3's new "sample" mode.

For now I haven't added any new ELF hwcap flags.  We probably need
to add a couple, for example:

T2 and T3 both support the population count instruction in hardware.

T3 supports VIS3 instructions, including support (finally) for
partitioned shift.  One can also now move directly between float
and integer registers.

T3 supports instructions meant to help with Galois Field and other HPC
calculations, such as XOR multiply.  Also there are "OP and negate"
instructions, for example "fnmul" which is multiply-and-negate.

T3 recognizes the transactional memory opcodes, however since
transactional memory isn't supported: 1) 'commit' behaves as a NOP and
2) 'chkpt' always branches 3) 'rdcps' returns all zeros and 4) 'wrcps'
behaves as a NOP.

So we'll need about 3 new elf capability flags in the end to represent
all of these things.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 22:10:10 -07:00
David S. Miller
314ff52727 sparc: Don't do expensive hypervisor PCR write unless necessary.
The hypervisor call is only necessary if hypervisor events are
being requested.

So if we're not tracking hypervisor events, simply do a direct
register write.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 20:46:25 -07:00
David S. Miller
15e3608d7c sparc: Add T3 sun4v cpu type and hypervisor group defines.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 20:43:51 -07:00
David S. Miller
facfddef2c sparc: Don't leave sparc_pmu_type NULL on sun4v.
Otherwise we'll crash in the sparc perf init code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27 20:25:57 -07:00
Guennadi Liakhovetski
7dfff95366 [media] V4L: soc-camera: remove soc-camera bus and devices on it
Now that v4l2 subdevices have got their own device objects, having
one more device in soc-camera clients became redundant and confusing.
This patch removes those devices and the soc-camera bus, they used to
reside on.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:56:08 -03:00
Guennadi Liakhovetski
6b526fed0e [media] V4L: sh_mobile_csi2: switch away from using the soc-camera bus notifier
This moves us one more step closer to eliminating the soc-camera bus
and devices on it. Besides, as a side effect, CSI-2 runtime PM on
sh-mobile secomes finer grained now: we only have to power on the
interface, when the device nodes are open.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:56:08 -03:00
Kalle Jokiniemi
75ccf268d5 [media] OMAP3: RX-51: define vdds_csib regulator supply
The RX-51 uses the CSIb IO complex for camera operation. The
board file is missing definition for the regulator supplying
the CSIb complex, so this is added for better power
management.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@nokia.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:56:06 -03:00
Stephen Rothwell
678624e401 sparc: rename atomic_add_unless
Should have been done in commit 1af08a1407f4 ("This is in preparation
for more generic atomic").

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Arun Sharma <asharma@fb.com>
Cc: David Miller <davem@davemloft.net>
Cc: "Hans-Christian Egtvedt" <hans-christian.egtvedt@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-27 12:53:36 -07:00
Linus Torvalds
9ed3689bdc Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Do not show error message for 32 interrupt lines
  Revert "microblaze: PCI fix typo fault in of_node pointer moving into pci_bus"
  microblaze: PCI fix typo fault in of_node pointer moving into pci_bus
  microblaze: Add support for early console on mdm
  microblaze: Simplify early console binding from DT
  microblaze: Get early printk console earlier
  microblaze: Standardise cpuinfo output for cache policy
  microblaze: Unprivileged stream instruction awareness
  microblaze: trivial: Fix typo fault
  microblaze: exec: Remove redundant set_fs(USER_DS)
  microblaze: Remove duplicated prototype of start_thread()
  microblaze: Fix unaligned value saving to the stack for system with MMU
  microblaze/irqs: Do not trace arch_local_{*,irq_*} functions
2011-07-27 09:24:20 -07:00
Uwe Kleine-König
885f24e152 ARM: tegra: only select MACH_HAS_SND_SOC_TEGRA_WM8903 if SND_SOC
This fixes:
	warning: (MACH_HARMONY && MACH_KAEN && MACH_SEABOARD) selects MACH_HAS_SND_SOC_TEGRA_WM8903 which has unmet direct dependencies (SOUND && !M68K && SND && SND_SOC)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Colin Cross <ccross@android.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2011-07-27 15:13:40 +00:00
Randy Dunlap
fd079facb3 KVM: fix TASK_DELAY_ACCT kconfig warning
Fix kconfig dependency warning:

warning: (KVM) selects TASK_DELAY_ACCT which has unmet direct dependencies (TASKSTATS)

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-27 14:22:06 +03:00
Michal Simek
363922946f microblaze: Do not show error message for 32 interrupt lines
When interrupt controller uses 32 interrupts lines the kernel
show error message about mismatch in kind-of-intr parameter
because it exceeds u32. Recast fixs this issue.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-27 11:02:00 +02:00
Shawn Guo
62550cd7c0 dmaengine: imx-sdma: use platform_device_id to identify sdma version
It might be not good to use software defined version to identify sdma
device type, when hardware does not define such version.  Instead,
soc name is stable enough to define the device type.

The patch uses platform_device_id rather than version number passed
by platform data to identify sdma device type/version.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Vinod Koul <vinod.koul@intel.com>
2011-07-27 09:31:45 +08:00
Shawn Guo
57ed3314e0 mmc: sdhci-esdhc-imx: get rid of the uses of cpu_is_mx()
The patch removes all the uses of cpu_is_mx().  Instead, it utilizes
platform_device_id to distinguish the esdhc differences among SoCs.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Chris Ball <cjb@laptop.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Chris Ball <cjb@laptop.org>
2011-07-27 09:31:27 +08:00
Shawn Guo
913413c307 mmc: sdhci-esdhc-imx: extend card_detect and write_protect support for mx5
The patch extends card_detect and write_protect support to get mx5
family and more scenarios supported.  The changes include:

 * Turn platform_data from optional to mandatory
 * Add cd_types and wp_types into platform_data to cover more use
   cases
 * Remove the use of flag ESDHC_FLAG_GPIO_FOR_CD
 * Adjust some machine codes to adopt the platform_data changes
 * Work around the issue that software reset will get card detection
   circuit stop working

With this patch, card_detect and write_protect gets supported on
mx5 based platforms.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Chris Ball <cjb@laptop.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Chris Ball <cjb@laptop.org>
2011-07-27 09:31:14 +08:00
Shawn Guo
0ca1e290b7 net/fec: gasket needs to be enabled for some i.mx
On the recent i.mx (mx25/50/53), there is a gasket inside fec
controller which needs to be enabled no matter phy works in MII
or RMII mode.

The current code enables the gasket only when phy interface is RMII.
It's broken when the driver works with a MII phy.  The patch uses
platform_device_id to distinguish the SoCs that have the gasket and
enables it on these SoCs for both MII and RMII mode.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reported-by: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
2011-07-27 09:30:50 +08:00
Shawn Guo
fe6b540ac0 serial/imx: get rid of the uses of cpu_is_mx1()
The patch removes all the uses of cpu_is_mx1().  Instead, it uses
the .id_table of platform_driver to distinguish the uart device type,
IMX1_UART and IMX21_UART.  The IMX21_UART type runs on all i.mx
except i.mx1.

A couple of !cpu_is_mx1 logic gets turned into is_imx21_uart,
as the codes wrapped there are really IMX21 type uart specific.

It also removes macro MX1_UCR3_REF25 and MX1_UCR3_REF30 which are
not used anywhere.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-27 09:30:38 +08:00
Linus Torvalds
b0189cd087 Merge branch 'next/devel2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/devel2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (47 commits)
  OMAP: Add debugfs node to show the summary of all clocks
  OMAP2+: hwmod: Follow the recommended PRCM module enable sequence
  OMAP2+: clock: allow per-SoC clock init code to prevent clockdomain calls from clock code
  OMAP2+: clockdomain: Add per clkdm lock to prevent concurrent state programming
  OMAP2+: PM: idle clkdms only if already in idle
  OMAP2+: clockdomain: add clkdm_in_hwsup()
  OMAP2+: clockdomain: Add 2 APIs to control clockdomain from hwmod framework
  OMAP: clockdomain: Remove redundant call to pwrdm_wait_transition()
  OMAP4: hwmod: Introduce the module control in hwmod control
  OMAP4: cm: Add two new APIs for modulemode control
  OMAP4: hwmod data: Add modulemode entry in omap_hwmod structure
  OMAP4: hwmod data: Add PRM context register offset
  OMAP4: prm: Remove deprecated functions
  OMAP4: prm: Replace warm reset API with the offset based version
  OMAP4: hwmod: Replace RSTCTRL absolute address with offset macros
  OMAP: hwmod: Wait the idle status to be disabled
  OMAP4: hwmod: Replace CLKCTRL absolute address with offset macros
  OMAP2+: hwmod: Init clkdm field at boot time
  OMAP4: hwmod data: Add clock domain attribute
  OMAP4: clock data: Add missing divider selection for auxclks
  ...
2011-07-26 17:42:18 -07:00
Linus Torvalds
69f1d1a6ac Merge branch 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (128 commits)
  ARM: S5P64X0: External Interrupt Support
  ARM: EXYNOS4: Enable MFC on Samsung NURI
  ARM: EXYNOS4: Enable MFC on universal_c210
  ARM: S5PV210: Enable MFC on Goni
  ARM: S5P: Add support for MFC device
  ARM: EXYNOS4: Add support FIMD on SMDKC210
  ARM: EXYNOS4: Add platform device and helper functions for FIMD
  ARM: EXYNOS4: Add resource definition for FIMD
  ARM: EXYNOS4: Change devname for FIMD clkdev
  ARM: SAMSUNG: Add IRQ_I2S0 definition
  ARM: SAMSUNG: Add platform device for idma
  ARM: EXYNOS4: Add more registers to be saved and restored for PM
  ARM: EXYNOS4: Add more register addresses of CMU
  ARM: EXYNOS4: Add platform device for dwmci driver
  ARM: EXYNOS4: configure rtc-s3c on NURI
  ARM: EXYNOS4: configure MAX8903 secondary charger on NURI
  ARM: EXYNOS4: configure ADC on NURI
  ARM: EXYNOS4: configure MAX17042 fuel gauge on NURI
  ARM: EXYNOS4: configure regulators and PMIC(MAX8997) on NURI
  ARM: EXYNOS4: Increase NR_IRQS for devices with more IRQs
  ...

Fix up tons of silly conflicts:
 - arch/arm/mach-davinci/include/mach/psc.h
 - arch/arm/mach-exynos4/Kconfig
 - arch/arm/mach-exynos4/mach-smdkc210.c
 - arch/arm/mach-exynos4/pm.c
 - arch/arm/mach-imx/mm-imx1.c
 - arch/arm/mach-imx/mm-imx21.c
 - arch/arm/mach-imx/mm-imx25.c
 - arch/arm/mach-imx/mm-imx27.c
 - arch/arm/mach-imx/mm-imx31.c
 - arch/arm/mach-imx/mm-imx35.c
 - arch/arm/mach-mx5/mm.c
 - arch/arm/mach-s5pv210/mach-goni.c
 - arch/arm/mm/Kconfig
2011-07-26 17:41:04 -07:00
Linus Torvalds
2d86a3f04e Merge branch 'next/board' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/board' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  ARM: S3C64XX: Configure backup battery charger on Cragganmore
  ARM: S3C64XX: Fix WM8915 IRQ polarity on Cragganmore
  ARM: S3C64XX: Configure supplies for all Cragganmore regulators
  ARM: S3C64XX: Refresh Cragganmore support
  ARM: S3C64XX: Initial support for Wolfson/Simtec Cragganmore/Banff
  OMAP4: Keyboard: Mux changes in the board file
  omap: blaze: add mmc5/wl1283 device support
  omap: 4430SDP: Register the card detect GPIO properly
  arm: omap3: cm-t35: add support for cm-t3730
  OMAP3: beagle: add support for beagleboard xM revision C
  OMAP3: rx-51: Add full regulator definitions
  omap: rx51: Platform support for lp5523 led chip
2011-07-26 17:13:04 -07:00
Linus Torvalds
3960ef326a Merge branch 'next/cross-platform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/cross-platform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  ARM: Consolidate the clkdev header files
  ARM: set vga memory base at run-time
  ARM: convert PCI defines to variables
  ARM: pci: make pcibios_assign_all_busses use pci_has_flag
  ARM: remove unnecessary mach/hardware.h includes
  pci: move microblaze and powerpc pci flag functions into asm-generic
  powerpc: rename ppc_pci_*_flags to pci_*_flags

Fix up conflicts in arch/microblaze/include/asm/pci-bridge.h
2011-07-26 17:12:10 -07:00
Linus Torvalds
62c9072bee Merge branch 'next/fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (24 commits)
  ASoC: omap: McBSP: fix build breakage on OMAP1
  OMAP: hwmod: fix the i2c-reset timeout during bootup
  I2C: OMAP2+: add correct functionality flags to all omap2plus i2c dev_attr
  I2C: OMAP2+: Tag all OMAP2+ hwmod defintions with I2C IP revision
  I2C: OMAP1/OMAP2+: create omap I2C functionality flags for each cpu_... test
  I2C: OMAP2+:  Introduce I2C IP versioning constants
  I2C: OMAP2+: increase omap_i2c_dev_attr flags from u8 to u32
  I2C: OMAP2+: Set hwmod flags to only allow 16-bit accesses to i2c
  OMAP4: hwmod data: Change DSS main_clk scheme
  OMAP4: powerdomain data: Remove unsupported MPU powerdomain state
  OMAP4: clock data: Keep GPMC clocks always enabled and hardware managed
  OMAP4: powerdomain data: Fix core mem states and missing cefuse flag
  OMAP2+: PM: Initialise sleep_switch to a non-valid value
  OMAP4: hwmod data: Modify DSS opt clocks
  OMAP4: iommu: fix clock name
  omap: iovmm: s/sg_dma_len(sg)/sg->length/
  omap: iommu: fix pte programming
  arm: omap3: cm-t35: fix slow path warning
  arm: omap3: cm-t35: minor comments fixes
  omap: ZOOM: QUART: Request reset GPIO
  ...
2011-07-26 17:10:20 -07:00
Linus Torvalds
4b30b6f23a Merge branch 'next/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  MAINTAINERS: add maintainer of CSR SiRFprimaII machine
  ARM: CSR: initializing L2 cache
  ARM: CSR: mapping early DEBUG_LL uart
  ARM: CSR: Adding CSR SiRFprimaII board support
  OMAP4: clocks: Update the clock tree with 4460 clock nodes
  OMAP4: PRCM: OMAP4460 specific PRM and CM register bitshifts
  OMAP4: ID: add omap_has_feature for max freq supported
  OMAP: ID: introduce chip detection for OMAP4460
  ARM: Xilinx: merge board file into main platform code
  ARM: Xilinx: Adding Xilinx board support

Fix up conflicts in arch/arm/mach-omap2/cm-regbits-44xx.h
2011-07-26 17:09:31 -07:00
Arun Sharma
7847777a45 atomic: cleanup asm-generic atomic*.h inclusion
After changing all consumers of atomics to include <linux/atomic.h>, we
ran into some compile time errors due to this dependency chain:

linux/atomic.h
  -> asm/atomic.h
    -> asm-generic/atomic-long.h

where atomic-long.h could use funcs defined later in linux/atomic.h
without a prototype.  This patches moves the code that includes
asm-generic/atomic*.h to linux/atomic.h.

Archs that need <asm-generic/atomic64.h> need to select
CONFIG_GENERIC_ATOMIC64 from now on (some of them used to include it
unconditionally).

Compile tested on i386 and x86_64 with allnoconfig.

Signed-off-by: Arun Sharma <asharma@fb.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:47 -07:00
Arun Sharma
f24219b4e9 atomic: move atomic_add_unless to generic code
This is in preparation for more generic atomic primitives based on
__atomic_add_unless.

Signed-off-by: Arun Sharma <asharma@fb.com>
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:47 -07:00
Arun Sharma
60063497a9 atomic: use <linux/atomic.h>
This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>

Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:47 -07:00
Akinobu Mita
148817ba09 asm-generic: add another generic ext2 atomic bitops
The majority of architectures implement ext2 atomic bitops as
test_and_{set,clear}_bit() without spinlock.

This adds this type of generic implementation in ext2-atomic-setbit.h and
use it wherever possible.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Suggested-by: Andreas Dilger <adilger@dilger.ca>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:46 -07:00
Andrew Morton
5296f6d315 h8300/m68k/xtensa: __FD_ISSET should return 0/1
Harmonise these return values with other architectures.  In some cases
this affects all compilers and in other cases non-gcc compilers only.

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Ulrich Drepper <drepper@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:43 -07:00
Mike Frysinger
0e9a6cb5e6 ptrace: unify show_regs() prototype
[ poleg@redhat.com: no need to declare show_regs() in ptrace.h, sched.h does this ]
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:43 -07:00
Mathias Krause
b45d59fb92 mn10300, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:41 -07:00
Mathias Krause
adc400f690 frv, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Also removed the dead code in flush_thread().

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:41 -07:00
Jean-Christophe Plagniol-Villard
e7b39145b5 watchdog: at91sam9/wdt: move register header to drivers
move register header to drivers

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2011-07-26 21:22:15 +00:00
Linus Torvalds
6fd4ce8864 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (31 commits)
  MIPS: Close races in TLB modify handlers.
  MIPS: Add uasm UASM_i_SRL_SAFE macro.
  MIPS: RB532: Use hex_to_bin()
  MIPS: Enable cpu_has_clo_clz for MIPS Technologies' platforms
  MIPS: PowerTV: Provide cpu-feature-overrides.h
  MIPS: Remove pointless return statement from empty void functions.
  MIPS: Limit fixrange_init() to the FIXMAP region
  MIPS: Install handlers for software IRQs
  MIPS: Move FIXADDR_TOP into spaces.h
  MIPS: Add SYNC after cacheflush
  MIPS: pfn_valid() is broken on low memory HIGHMEM systems
  MIPS: HIGHMEM DMA on noncoherent MIPS32 processors
  MIPS: topdown mmap support
  MIPS: Remove redundant addr_limit assignment on exec.
  MIPS: AR7: Replace __attribute__((__packed__)) with __packed
  MIPS: AR7: Remove 'space before tabs' in platform.c
  MIPS: Lantiq: Add missing clk_enable and clk_disable functions.
  MIPS: AR7: Fix trailing semicolon bug in clock.c
  MAINTAINERS: Update MIPS entry.
  MIPS: BCM63xx: Remove duplicate PERF_IRQSTAT_REG definition
  ...
2011-07-26 14:17:28 -07:00
Linus Torvalds
fa8f53ace4 Merge branch 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, olpc-xo15-sci: Enable EC wakeup capability
  x86, olpc: Fix dependency on POWER_SUPPLY
  x86, olpc: Add XO-1.5 SCI driver
  x86, olpc: Add XO-1 RTC driver
  x86, olpc-xo1-sci: Propagate power supply/battery events
  x86, olpc-xo1-sci: Add lid switch functionality
  x86, olpc-xo1-sci: Add GPE handler and ebook switch functionality
  x86, olpc: EC SCI wakeup mask functionality
  x86, olpc: Add XO-1 SCI driver and power button control
  x86, olpc: Add XO-1 suspend/resume support
  x86, olpc: Rename olpc-xo1 to olpc-xo1-pm
  x86, olpc: Move CS5536-related constants to cs5535.h
  x86, olpc: Add missing elements to device tree
2011-07-26 11:11:54 -07:00
Michal Simek
6dbd3085c3 Revert "microblaze: PCI fix typo fault in of_node pointer moving into pci_bus"
This reverts commit c9d761b7c4.

Ben' commit "microblaze/pci: Move the remains of pci_32.c to pci-common.c"
(sha1: bf13a6fa09)
completely removed pci_32.c that's why my fixing commit caused
the problem with merging and need to be revert.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-26 11:29:54 +02:00
Fabio Estevam
1c4b45d8f6 ARM: board-mx51_babbage: Fix UART2 registration
On MX51 Babbage board the RTS/CTS pins are not used on UART2 port.

Fix the registration of this port.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:43:49 +02:00
Arnaud Patard (Rtp)
fbd60a7e87 efika: Fix board id detection
Current code is assuming that gpio_get_value() is returning 0 or 1 but it
should be checking if the value is 0 or not. Not doing it properly is breaking
the detection of the board (and thus the reboot of efika mx to2) when using
the new mxc gpio driver, which relies on basic mmio gpio.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:53 +02:00
Arnaud Patard (Rtp)
f7db3d5f4c efikasb: fix gpio keys.
While testing the keys, I only checked that the key were generating an input
event but unfortunately, they were not generating the right event. Fix that.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:52 +02:00
Arnaud Patard (Rtp)
37df0e5de7 efikasb/mx: fix usbh1 initialisation
mx51_initialize_usb_hw() support introduced a small error. The usbh1 has
pdev->id equal to 1 not 0, so use pdev->id to make things less error-prone and
to fix that.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:52 +02:00
Eric Miao
4e606d68d2 ARM: mx53: add pad configuration for I2C signals
I2C signals SDA/SCL are a bit different, they need to be pull-up and
open-drain (so to support multiple I2C devices).

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Eric Miao <eric.miao@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:52 +02:00
Fabio Estevam
f07c7d6730 ARM: mach-imx/mx31lilly: Fix section mismatches
Fix the following section mismatches:

WARNING: vmlinux.o(.text+0x1026c): Section mismatch in reference from the function lilly1131_usb_init() to the variable .init.rodata:imx31_mxc_ehci_hs_data
The function lilly1131_usb_init() references
the variable __initconst imx31_mxc_ehci_hs_data.
This is often because lilly1131_usb_init lacks a __initconst
annotation or the annotation of imx31_mxc_ehci_hs_data is wrong.

WARNING: vmlinux.o(.text+0x10270): Section mismatch in reference from the function lilly1131_usb_init() to the (unknown reference) .init.rodata:(unknown)
The function lilly1131_usb_init() references
the (unknown reference) __initconst (unknown).
This is often because lilly1131_usb_init lacks a __initconst
annotation or the annotation of (unknown) is wrong.

WARNING: vmlinux.o(.text+0x10274): Section mismatch in reference from the function lilly1131_usb_init() to the (unknown reference) .init.data:(unknown)
The function lilly1131_usb_init() references
the (unknown reference) __initdata (unknown).
This is often because lilly1131_usb_init lacks a __initdata
annotation or the annotation of (unknown) is wrong.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:48 +02:00
Fabio Estevam
ea7aed6bfb ARM: mach-imx/mx31ads: Fix section mismatches
Fix the following section mismatches:

WARNING: vmlinux.o(.text+0x101cc): Section mismatch in reference from the function mxc_init_i2c() to the (unknown reference) .init.data:(unknown)
The function mxc_init_i2c() references
the (unknown reference) __initdata (unknown).
This is often because mxc_init_i2c lacks a __initdata
annotation or the annotation of (unknown) is wrong.

WARNING: vmlinux.o(.text+0x101d8): Section mismatch in reference from the function mxc_init_i2c() to the variable .init.rodata:imx31_imx_i2c_data
The function mxc_init_i2c() references
the variable __initconst imx31_imx_i2c_data.
This is often because mxc_init_i2c lacks a __initconst
annotation or the annotation of imx31_imx_i2c_data is wrong.

WARNING: vmlinux.o(.text+0x10200): Section mismatch in reference from the function mxc_init_audio() to the variable .init.rodata:imx31_imx_ssi_data
The function mxc_init_audio() references
the variable __initconst imx31_imx_ssi_data.
This is often because mxc_init_audio lacks a __initconst
annotation or the annotation of imx31_imx_ssi_data is wrong.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:45 +02:00
Javier Martin
c86566bbb2 Add tlv320aic32x4 platform data to Visstrim_M10.
Without this platform data the aic32x4 audio
codec in the Visstrim_M10 won't work properly.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-26 09:14:45 +02:00
Linus Torvalds
1380516599 Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (741 commits)
  staging:iio:meter:ade7753 should be 16 bit read not 8 bit for mode register.
  staging:iio:kfifo_buf fix double initialization of the ring device structure.
  staging:iio:accel:lis3l02dq: fix incorrect pointer passed to spi_set_drvdata.
  staging:iio:imu fix missing register table index for some channels
  spectra: enable device before poking it
  staging: rts_pstor: Fix a miswriting
  staging/lirc_bt829: Return -ENODEV when no hardware is found.
  staging/lirc_parallel: remove pointless prototypes.
  staging/lirc_parallel: fix panic on rmmod
  staging:iio:adc:ad7476: Incorrect pointer into spi_set_drvdata.
  Staging: zram: Fix kunmapping order
  Revert "gma500: Fix dependencies"
  gma500: Add medfield header
  gma500: wire up the mrst i2c bus from chip_info
  gma500: Fix DPU build
  gma500: Clean up the DPU config and make it runtime
  gma500: resync with Medfield progress
  gma500: Use the mrst helpers and power control for mode commit
  gma500@ Fix backlight range error
  gma500: More Moorestown muddle meddling means MM maybe might modeset
  ...

Fix up fairly trivial conflicts all over, mostly due to header file
cleanup conflicts, but some deleted files and some just context changes:
 - Documentation/feature-removal-schedule.txt
 - drivers/staging/bcm/headers.h
 - drivers/staging/brcm80211/brcmfmac/dhd_linux.c
 - drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
 - drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h
 - drivers/staging/brcm80211/brcmfmac/wl_iw.c
 - drivers/staging/et131x/et131x_netdev.c
 - drivers/staging/rtl8187se/ieee80211/ieee80211_softmac.c
 - drivers/staging/rtl8192e/r8192E.h
 - drivers/staging/usbip/userspace/src/utils.h
2011-07-25 23:26:34 -07:00
Linus Torvalds
f549953c15 Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (115 commits)
  EHCI: fix direction handling for interrupt data toggles
  USB: serial: add IDs for WinChipHead USB->RS232 adapter
  USB: OHCI: fix another regression for NVIDIA controllers
  usb: gadget: m66592-udc: add pullup function
  usb: gadget: m66592-udc: add function for external controller
  usb: gadget: r8a66597-udc: add pullup function
  usb: renesas_usbhs: support multi driver
  usb: renesas_usbhs: inaccessible pipe is not an error
  usb: renesas_usbhs: care buff alignment when dma handler
  USB: PL2303: correctly handle baudrates above 115200
  usb: r8a66597-hcd: fixup USB_PORT_STAT_C_SUSPEND shift
  usb: renesas_usbhs: compile/config are rescued
  usb: renesas_usbhs: fixup comment-out
  usb: update email address in ohci-sh and r8a66597-hcd
  usb: r8a66597-hcd: add function for external controller
  EHCI: only power off port if over-current is active
  USB: mon: Allow to use usbmon without debugfs
  USB: EHCI: go back to using the system clock for QH unlinks
  ehci: add pci quirk for Ordissimo and RM Slate 100 too
  ehci: refactor pci quirk to use standard dmi_check_system method
  ...

Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
2011-07-25 23:08:32 -07:00
Linus Torvalds
184475029a Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (99 commits)
  drivers/virt: add missing linux/interrupt.h to fsl_hypervisor.c
  powerpc/85xx: fix mpic configuration in CAMP mode
  powerpc: Copy back TIF flags on return from softirq stack
  powerpc/64: Make server perfmon only built on ppc64 server devices
  powerpc/pseries: Fix hvc_vio.c build due to recent changes
  powerpc: Exporting boot_cpuid_phys
  powerpc: Add CFAR to oops output
  hvc_console: Add kdb support
  powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon
  powerpc/irq: Quieten irq mapping printks
  powerpc: Enable lockup and hung task detectors in pseries and ppc64 defeconfigs
  powerpc: Add mpt2sas driver to pseries and ppc64 defconfig
  powerpc: Disable IRQs off tracer in ppc64 defconfig
  powerpc: Sync pseries and ppc64 defconfigs
  powerpc/pseries/hvconsole: Fix dropped console output
  hvc_console: Improve tty/console put_chars handling
  powerpc/kdump: Fix timeout in crash_kexec_wait_realmode
  powerpc/mm: Fix output of total_ram.
  powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards
  powerpc: Correct annotations of pmu registration functions
  ...

Fix up trivial Kconfig/Makefile conflicts in arch/powerpc, drivers, and
drivers/cpufreq
2011-07-25 22:59:39 -07:00
Linus Torvalds
3b76eefe0f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: Revive reporting of spurious interrupts
  m68knommu: Move forward declaration of do_IRQ() from machdep.h to irq.h
  m68k: fix some atomic operation asm address modes for ColdFire
  m68k: use CPU_HAS_NO_BITFIELDS for signal functions
  m68k: merge and clean up delay.h files
  m68knommu: correctly use trap_init
  m68knommu: merge ColdFire 5206 and 5206e platform code
  m68k: merge mmu and non-mmu bitops.h
  m68k: merge MMU and non MMU versions of system.h
  m68k: merge MMU and non-MMU versions of asm/hardirq.h
  m68k: merge the non-mmu and mmu versions of module.c
  m68knommu: Fix printk() format in free_initrd_mem()
  m68knommu: Make empty_zero_page "void *", like on m68k
2011-07-25 22:50:54 -07:00
Linus Torvalds
2dad3206db Merge branch 'for-3.1' of git://linux-nfs.org/~bfields/linux
* 'for-3.1' of git://linux-nfs.org/~bfields/linux:
  nfsd: don't break lease on CLAIM_DELEGATE_CUR
  locks: rename lock-manager ops
  nfsd4: update nfsv4.1 implementation notes
  nfsd: turn on reply cache for NFSv4
  nfsd4: call nfsd4_release_compoundargs from pc_release
  nfsd41: Deny new lock before RECLAIM_COMPLETE done
  fs: locks: remove init_once
  nfsd41: check the size of request
  nfsd41: error out when client sets maxreq_sz or maxresp_sz too small
  nfsd4: fix file leak on open_downgrade
  nfsd4: remember to put RW access on stateid destruction
  NFSD: Added TEST_STATEID operation
  NFSD: added FREE_STATEID operation
  svcrpc: fix list-corrupting race on nfsd shutdown
  rpc: allow autoloading of gss mechanisms
  svcauth_unix.c: quiet sparse noise
  svcsock.c: include sunrpc.h to quiet sparse noise
  nfsd: Remove deprecated nfsctl system call and related code.
  NFSD: allow OP_DESTROY_CLIENTID to be only op in COMPOUND

Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
2011-07-25 22:49:19 -07:00
David Daney
bf28607fbe MIPS: Close races in TLB modify handlers.
Page table entries are made invalid by writing a zero into the the PTE
slot in a page table.  This creates a race condition with the TLB
modify handlers when they are updating the PTE.

CPU0                              CPU1

Test for _PAGE_PRESENT
.                                 set to not _PAGE_PRESENT (zero)
Set to _PAGE_VALID

So now the page not present value (zero) is suddenly valid and user
space programs have access to physical page zero.

We close the race by putting the test for _PAGE_PRESENT and setting of
_PAGE_VALID into an atomic LL/SC section.  This requires more registers
than just K0 and K1 in the handlers, so we need to save some registers
to a save area and then restore them when we are done.

The save area is an array of cacheline aligned structures that should
not suffer cache line bouncing as they are CPU private.

[ralf@linux-mips.org: Fix !defined(CONFIG_MIPS_PGD_C0_CONTEXT) build error.]

Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2577/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-26 06:47:47 +01:00
David Daney
f0daaaf523 MIPS: Add uasm UASM_i_SRL_SAFE macro.
This can be used from either 32-bit or 64-bit code to generate logical
right shifts of any constant amount.

Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2576/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-26 06:47:36 +01:00
Linus Torvalds
45b583b10a Merge 'akpm' patch series
* Merge akpm patch series: (122 commits)
  drivers/connector/cn_proc.c: remove unused local
  Documentation/SubmitChecklist: add RCU debug config options
  reiserfs: use hweight_long()
  reiserfs: use proper little-endian bitops
  pnpacpi: register disabled resources
  drivers/rtc/rtc-tegra.c: properly initialize spinlock
  drivers/rtc/rtc-twl.c: check return value of twl_rtc_write_u8() in twl_rtc_set_time()
  drivers/rtc: add support for Qualcomm PMIC8xxx RTC
  drivers/rtc/rtc-s3c.c: support clock gating
  drivers/rtc/rtc-mpc5121.c: add support for RTC on MPC5200
  init: skip calibration delay if previously done
  misc/eeprom: add eeprom access driver for digsy_mtc board
  misc/eeprom: add driver for microwire 93xx46 EEPROMs
  checkpatch.pl: update $logFunctions
  checkpatch: make utf-8 test --strict
  checkpatch.pl: add ability to ignore various messages
  checkpatch: add a "prefer __aligned" check
  checkpatch: validate signature styles and To: and Cc: lines
  checkpatch: add __rcu as a sparse modifier
  checkpatch: suggest using min_t or max_t
  ...

Did this as a merge because of (trivial) conflicts in
 - Documentation/feature-removal-schedule.txt
 - arch/xtensa/include/asm/uaccess.h
that were just easier to fix up in the merge than in the patch series.
2011-07-25 21:00:19 -07:00
Linus Walleij
b09628ef56 mach-ux500: add lm3530 ALS platform data for U5500
From: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>

platform data for simple backlight driver for LM3530
in the u5500 platform

Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:15 -07:00
Amerigo Wang
c5f41752fd notifiers: sys: move reboot notifiers into reboot.h
It is not necessary to share the same notifier.h.

This patch already moves register_reboot_notifier() and
unregister_reboot_notifier() from kernel/notifier.c to kernel/sys.c.

[amwang@redhat.com: make allyesconfig succeed on ppc64]
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: David Miller <davem@davemloft.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:14 -07:00
Richard Weinberger
f1c93e4946 um: remove dead code
GCC 4.6's -Wunused-but-set-variable found some dead code.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Richard Weinberger
39073db15b um: adjust size of pid_buf
Linux can have pids up to 4*1024*1024.  To handle such huge numbers
pid_buf needs to be larger.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Richard Weinberger
f1c2bb8b99 um: implement a x86_64 vDSO
Until now UML had no x86_64 vDSO.  So glibc always used the vsyscall page
for gettimeday() and friends.  Calls to gettimeday() returned falsely the
host time and confused some programs.

This patch adds a vDSO which turns all __vdso_* calls into a system call
so that UML can trap them.

As glibc still uses the vsyscall page for static binaries this patch
improves the situation only for dynamic binaries.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Richard Weinberger
fc9a00187b um: set __HAVE_ARCH_GATE_AREA for x86_64
Implement arch_vma_name() and make get_gate_vma(), in_gate_area() and
in_gate_area_no_mm() a nop.

We need arch_vma_name() to support vDSO.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Richard Weinberger
548f0a4e02 um: Set __HAVE_ARCH_GATE_AREA for i386
When UML is unable to reuse the host's vDSO FIXADDR_USER_START is zero.
To handle this special case correclty we have to implement custom gate
area helper methods.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Richard Weinberger
b743ac54e5 um: disable scan_elf_aux() on x86_64
Reusing the host's vDSO makes only sense on x86_32.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Davidlohr Bueso
2a6d0ac182 uml: free resources
When creating the temp file there's a memory and file descriptor leak upon
error.

Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Vitaliy Ivanov
9a8beb9306 uml: drivers/slip_user.c memory leak fix
Do not free memory when you failed to allocate it.

Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Vitaliy Ivanov
2fdf213092 uml: helper.c warning corrections
Fix this warning:

  arch/um/os-Linux/helper.c: In function `helper_child':
  arch/um/os-Linux/helper.c:38:7: warning: ignoring return value of `write', declared with attribute warn_unused_result

[richard@nod.at: happens only with -D_FORTIFY_SOURCE=2]
Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Vitaliy Ivanov
7a99ae7c57 uml: cow_user.c warning corrections
Fix this warning:

  arch/um/drivers/cow_user.c: In function `absolutize':
  arch/um/drivers/cow_user.c:189:7: warning: ignoring return value of `chdir', declared with attribute warn_unused_result

[richard@nod.at: happens only with -D_FORTIFY_SOURCE=2]
Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:13 -07:00
Vitaliy Ivanov
fbee8d933c uml: drivers/net_user.c memory leak fix
Perform memory cleanup on exit.  On receiving invalid 'pid' we still
should clean 'output' variable.

Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Geert Uytterhoeven
7fa38e7e9e um: reinstate kernel version in generated .config
Commit 0954828fcb ("kconfig: replace KERNELVERSION usage by the
mainmenu's prompt") made the kernel version disappear from the generated
.config file when configuring for UML.  As UML's Kconfig doesn't have a
mainmenu, kconfig falls back to the default string "Linux Kernel
Configuration".

Add a suitable mainmenu to the main UML Kconfig file to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Richard Weinberger
dd71dc4c33 um: add netpoll support
To make netconsole usable on UML, its ethernet driver needs netpoll
support.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Richard Weinberger
f956b3e40a um: fix _FORTIFY_SOURCE=2 support for kernel modules
When UML is compiled with _FORTIFY_SOURCE we have to export all _chk()
functions which are used in modules.  For now it's only the case for
__sprintf_chk().

Tested-by: Florian Fainelli <florian@openwrt.org>
Reported-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Richard Weinberger
22e9b917ab um: clean up delay functions
Both sys-i386 and sys-x86_64 support now ndelay().  The delay functions
are based on arch/x86/lib/delay.c.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Mathias Krause
c0ce5b6734 um, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Richard Weinberger
7213de044e um: clean up vm-flags.h
There is no need to define VM_{STACK,DATA}_DEFAULT_FLAGS as variable.
It's also useless to test for TIF_IA32 as 64bit UML has no IA32 emulation.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Mathias Krause
5ec80e50e1 cris, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
WANG Cong
ce1bb7afc5 cris: fix some build warnings in pinmux.c
Fix some harmless warnings such as

  arch/cris/arch-v32/mach-a3/pinmux.c:273: warning: ISO C90 forbids mixed declarations and code:

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Mathias Krause
b7de110044 m68k, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Mathias Krause
f796062598 m32r, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Mathias Krause
6fa80900db alpha, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:12 -07:00
Mathias Krause
023f21b9cc h8300, exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:11 -07:00
David S. Miller
df077ac468 sparc64: implement get_user_pages_fast()
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:10 -07:00
David S. Miller
683d2fa672 sparc64: add support for _PAGE_SPECIAL
Luckily there are still a few software PTE bits remaining and they even
match up in both the sun4u and sun4v pte layouts.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:10 -07:00
David S. Miller
4a0100f754 sparc64: use RCU page table freeing
Make use of the generic RCU page table freeing on Sparc64, doing so allows
for race-free software page-table walkers like gup_fast().

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:10 -07:00
David S. Miller
4dedbf8dc1 sparc64: kill page table quicklists
With the recent mmu_gather changes that included generic RCU freeing of
page-tables, it is now quite straightforward to implement gup_fast() on
sparc64.

This patch:

Remove the page table quicklists.  They are pointless and make it harder
to use RCU page table freeing and share code with other architectures.

BTW, this is the second time this has happened, see commit 3c93646524
("[SPARC64]: Kill pgtable quicklists and use SLAB.")

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:09 -07:00
WANG Cong
90b03f5052 xtensa: fix a build error in arch/xtensa/include/asm/uaccess.h
Fix the following build error:

  arch/xtensa/include/asm/uaccess.h:403: error: implicit declaration of function 'prefetch'
  arch/xtensa/include/asm/uaccess.h:412: error: implicit declaration of function 'prefetchw'

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:07 -07:00
Dan Rosenberg
0d0138ebe2 xtensa: prevent arbitrary read in ptrace
Prevent an arbitrary kernel read.  Check the user pointer with access_ok()
before copying data in.

[akpm@linux-foundation.org: s/EIO/EFAULT/]
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: Christian Zankel <chris@zankel.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:07 -07:00
Jeremy Fitzhardinge
b3c4b98250 xen/tracing: fix compile errors when tracing is disabled.
When CONFIG_FUNCTION_TRACER is disabled, compilation fails as follows:
  CC      arch/x86/xen/setup.o
In file included from arch/x86/include/asm/xen/hypercall.h:42,
                 from arch/x86/xen/setup.c:19:
include/trace/events/xen.h:31: warning: 'struct multicall_entry' declared inside parameter list
include/trace/events/xen.h:31: warning: its scope is only this definition or declaration, which is probably not what you want
include/trace/events/xen.h:31: warning: 'struct multicall_entry' declared inside parameter list
include/trace/events/xen.h:31: warning: 'struct multicall_entry' declared inside parameter list
include/trace/events/xen.h:31: warning: 'struct multicall_entry' declared inside parameter list
[...]
arch/x86/xen/trace.c:5: error: '__HYPERVISOR_set_trap_table' undeclared here (not in a function)
arch/x86/xen/trace.c:5: error: array index in initializer not of integer type
arch/x86/xen/trace.c:5: error: (near initialization for 'xen_hypercall_names')
arch/x86/xen/trace.c:6: error: '__HYPERVISOR_mmu_update' undeclared here (not in a function)
arch/x86/xen/trace.c:6: error: array index in initializer not of integer type
arch/x86/xen/trace.c:6: error: (near initialization for 'xen_hypercall_names')

Fix this by making sure struct multicall_entry has a declaration in
scope at all times, and don't bother compiling xen/trace.c when tracing
is disabled.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2011-07-25 15:51:02 -07:00
Linus Torvalds
d3ec4844d4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
  fs: Merge split strings
  treewide: fix potentially dangerous trailing ';' in #defined values/expressions
  uwb: Fix misspelling of neighbourhood in comment
  net, netfilter: Remove redundant goto in ebt_ulog_packet
  trivial: don't touch files that are removed in the staging tree
  lib/vsprintf: replace link to Draft by final RFC number
  doc: Kconfig: `to be' -> `be'
  doc: Kconfig: Typo: square -> squared
  doc: Konfig: Documentation/power/{pm => apm-acpi}.txt
  drivers/net: static should be at beginning of declaration
  drivers/media: static should be at beginning of declaration
  drivers/i2c: static should be at beginning of declaration
  XTENSA: static should be at beginning of declaration
  SH: static should be at beginning of declaration
  MIPS: static should be at beginning of declaration
  ARM: static should be at beginning of declaration
  rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
  Update my e-mail address
  PCIe ASPM: forcedly -> forcibly
  gma500: push through device driver tree
  ...

Fix up trivial conflicts:
 - arch/arm/mach-ep93xx/dma-m2p.c (deleted)
 - drivers/gpio/gpio-ep93xx.c (renamed and context nearby)
 - drivers/net/r8169.c (just context changes)
2011-07-25 13:56:39 -07:00
Linus Torvalds
0003230e82 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  fs: take the ACL checks to common code
  bury posix_acl_..._masq() variants
  kill boilerplates around posix_acl_create_masq()
  generic_acl: no need to clone acl just to push it to set_cached_acl()
  kill boilerplate around posix_acl_chmod_masq()
  reiserfs: cache negative ACLs for v1 stat format
  xfs: cache negative ACLs if there is no attribute fork
  9p: do no return 0 from ->check_acl without actually checking
  vfs: move ACL cache lookup into generic code
  CIFS: Fix oops while mounting with prefixpath
  xfs: Fix wrong return value of xfs_file_aio_write
  fix devtmpfs race
  caam: don't pass bogus S_IFCHR to debugfs_create_...()
  get rid of create_proc_entry() abuses - proc_mkdir() is there for purpose
  asus-wmi: ->is_visible() can't return negative
  fix jffs2 ACLs on big-endian with 16bit mode_t
  9p: close ACL leaks
  ocfs2_init_acl(): fix a leak
  VFS : mount lock scalability for internal mounts
2011-07-25 12:53:15 -07:00
Linus Torvalds
4b478cedcd Merge branch 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  ARM: mach-loki: delete
  ARM: mach-s3c2400: delete
  ARM: mach-s3c24a0: delete
2011-07-25 12:43:28 -07:00
Linus Torvalds
ae4c42e4e4 Merge branch 'next/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (133 commits)
  ARM: EXYNOS4: Change devname for FIMD clkdev
  ARM: S3C64XX: Cleanup mach/regs-fb.h from mach-s3c64xx
  ARM: S5PV210: Cleanup mach/regs-fb.h from mach-s5pv210
  ARM: S5PC100: Cleanup mach/regs-fb.h from mach-s5pc100
  ARM: S3C24XX: Use generic s3c_set_platdata for devices
  ARM: S3C64XX: Use generic s3c_set_platdata for OneNAND
  ARM: SAMSUNG: Use generic s3c_set_platdata for NAND
  ARM: SAMSUNG: Use generic s3c_set_platdata for USB OHCI
  ARM: SAMSUNG: Use generic s3c_set_platdata for HWMON
  ARM: SAMSUNG: Use generic s3c_set_platdata for FB
  ARM: SAMSUNG: Use generic s3c_set_platdata for TS
  ARM: S3C64XX: Add PWM backlight support on SMDK6410
  ARM: S5P64X0: Add PWM backlight support on SMDK6450
  ARM: S5P64X0: Add PWM backlight support on SMDK6440
  ARM: S5PC100: Add PWM backlight support on SMDKC100
  ARM: S5PV210: Add PWM backlight support on SMDKV210
  ARM: EXYNOS4: Add PWM backlight support on SMDKC210
  ARM: EXYNOS4: Add PWM backlight support on SMDKV310
  ARM: SAMSUNG: Create a common infrastructure for PWM backlight support
  clocksource: convert 32-bit down counting clocksource on S5PV210/S5P64X0
  ...

Fix up trivial conflict in arch/arm/mach-imx/mach-scb9328.c
2011-07-25 12:38:42 -07:00
Linus Torvalds
dd58ecba48 Merge branch 'next/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (35 commits)
  ARM: msm: platsmp: determine number of CPU cores at boot time
  ARM: Tegra: Seaboard: Fix I2C bus numbering for ADT7461
  ARM: Tegra: Trimslice: Tri-state DAP3 pinmux
  ARM: orion5x: fixup 5181 MPP mask check
  ARM: mxs-dma: include <linux/dmaengine.h>
  ARM: i.MX53: consistently use MX53_UART_PAD_CTRL for uart txd/rxd/rts/cts
  ARM: i.MX53: UARTn_CTS pin should not change RTS input select
  ARM: i.MX53: UARTn_TXD pin should not change RXD input select
  ARM: mx25: Fix typo on CAN1_RX pad setting
  iomux-mx53: add missing 'IOMUX_CONFIG_SION' for some I2C pad definitions
  ARM: NUC93X: add UL suffix to VMALLOC_END to ensure it is properly typed
  ARM: LPC32XXX: add UL suffix to VMALLOC_END to ensure it is properly typed
  ARM: CNS3XXX: add UL suffix to VMALLOC_END to ensure it is properly typed
  ARM: i.MX53: Fix IOMUX type o's
  ARM i.MX dma: Fix burstsize settings
  mach-mx5: fix the I2C clock parents
  ARM: mxs/tx28: according to the TX28's datasheet D4-D7 are not used for MMC0
  ARM i.MX23/28: platform-mxsfb: Add missing include of linux/dma-mapping.h
  ARM: mx53: Fix some interrupts marked as reserved.
  MXC: iomux-v3: correct NO_PAD_CTRL definition
  ...

Fix up trivial conflict in arch/arm/mach-imx/mach-mx31_3ds.c
2011-07-25 11:53:35 -07:00
Andy Shevchenko
c8e58856f2 MIPS: RB532: Use hex_to_bin()
Remove custom implementation of hex_to_bin().

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1580/
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:56 +01:00
Shinya Kuribayashi
5fba096080 MIPS: Enable cpu_has_clo_clz for MIPS Technologies' platforms
Enable cpu_has_clo_clz only when CONFIG_CPU_MIPS32 or CONFIG_CPU_MIPS64
is selected.  This will optimize fls() and __fls() to use CLZ insn, and
eventually ffs() and __ffs() as well.

Malta and MIPSSim are development platforms, and need to take care of
various processor configurations, release rivisions and so on, even
across different MIPS ISAs.  For such platforms we have to be careful,
for instance, with turning on cpu_has_mips{32,64}r[12] features.

As for CLZ, all MIPS32/64 processors support it, regardless of release
revisions.

Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
To: David VomLehn <dvomlehn@cisco.com>
To: macro@linux-mips.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1453/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:55 +01:00
David VomLehn
c2b78c8e82 MIPS: PowerTV: Provide cpu-feature-overrides.h
This will optimize fls() and __fls() to use CLZ throughout the kernel,
and any other optimizations that depend on constant cpu_has_* values
will also be used.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
To: David VomLehn <dvomlehn@cisco.com>
To: macro@linux-mips.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1452/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:55 +01:00
Ralf Baechle
98f4a2c27c MIPS: Remove pointless return statement from empty void functions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
To: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2391/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:55 +01:00
Kevin Cernekee
464fd83e84 MIPS: Limit fixrange_init() to the FIXMAP region
fixrange_init() allocates page tables for all addresses higher than
FIXADDR_TOP.  On processors that override the default FIXADDR_TOP
address of 0xfffe_0000, this can consume up to 4 pages (1 page per 4MB)
for pgd's that are never used.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1980/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:54 +01:00
Kevin Cernekee
273f2d7e64 MIPS: Install handlers for software IRQs
BMIPS4350/4380/5000 CMT/SMT all use SW INT0/INT1 for inter-thread
signaling.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1709/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:54 +01:00
Kevin Cernekee
565b60de32 MIPS: Move FIXADDR_TOP into spaces.h
Memory maps and addressing quirks are normally defined in <spaces.h>.
There are already three targets that need to override FIXADDR_TOP, and
others exist.  This will be a cleaner approach than adding lots of
ifdefs in fixmap.h .

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1573/
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:53 +01:00
Kevin Cernekee
d0023c4a0a MIPS: Add SYNC after cacheflush
On processors with deep write buffers, it is likely that many cycles
will pass between a CACHE instruction and the time the data actually
gets written out to DRAM.  Add a SYNC instruction to ensure that the
buffers get emptied before the flush functions return.

Actual problem seen in the wild:

1) dma_alloc_coherent() allocates cached memory

2) memset() is called to clear the new pages

3) dma_cache_wback_inv() is called to flush the zero data out to memory

4) dma_alloc_coherent() returns an uncached (kseg1) pointer to the
freshly allocated pages

5) Caller writes data through the kseg1 pointer

6) Buffered writeback data finally gets flushed out to DRAM

7) Part of caller's data is inexplicably zeroed out

This patch adds SYNC between steps 3 and 4, which fixed the problem.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:53 +01:00
Kevin Cernekee
b6da0ffb09 MIPS: pfn_valid() is broken on low memory HIGHMEM systems
pfn_valid() compares the PFN to max_mapnr:

        __pfn >= min_low_pfn && __pfn < max_mapnr;

On HIGHMEM kernels, highend_pfn is used to set the value of max_mapnr.
Unfortunately, highend_pfn is left at zero if the system does not
actually have enough RAM to reach into the HIGHMEM range.  This causes
pfn_valid() to always return false, and when debug checks are enabled
the kernel will fail catastrophically:

Memory: 22432k/32768k available (2249k kernel code, 10336k reserved, 653k data, 1352k init, 0k highmem)
NR_IRQS:128
kfree_debugcheck: out of range ptr 81c02900h.
Kernel bug detected[#1]:
Cpu 0
$ 0   : 00000000 10008400 00000034 00000000
$ 4   : 8003e160 802a0000 8003e160 00000000
$ 8   : 00000000 0000003e 00000747 00000747
...

On such a configuration, max_low_pfn should be used to set max_mapnr.

This was seen on 2.6.34.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1992/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:52 +01:00
Dezhong Diao
e36863a550 MIPS: HIGHMEM DMA on noncoherent MIPS32 processors
[v4: Patch applies to linux-queue.git with kmap_atomic patches:
 https://patchwork.kernel.org/patch/189932/
 https://patchwork.kernel.org/patch/194552/
 https://patchwork.kernel.org/patch/189912/ ]

The MIPS DMA coherency functions do not work properly (i.e. kernel oops)
when HIGHMEM pages are passed in as arguments.  Use kmap_atomic() to
temporarily map high pages for cache maintenance operations.

Tested on a 2.6.36-rc7 1GB HIGHMEM SMP no-alias system.

Signed-off-by: Dezhong Diao <dediao@cisco.com>
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: Dezhong Diao <dediao@cisco.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: David VomLehn <dvomlehn@cisco.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1695/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:52 +01:00
Jian Peng
d0be89f6c2 MIPS: topdown mmap support
This patch introduced topdown mmap support in user process address
space allocation policy.

Recently, we ran some large applications that use mmap heavily and
lead to OOM due to inflexible mmap allocation policy on MIPS32.

Since most other major archs supported it for years, it is reasonable
to follow the trend and reduce the pain of porting applications.

Due to cache aliasing concern, arch_get_unmapped_area_topdown() and
other helper functions are implemented in arch/mips/kernel/syscall.c.

Signed-off-by: Jian Peng <jipeng2005@gmail.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2389/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:26:51 +01:00
Mathias Krause
3a7136602b MIPS: Remove redundant addr_limit assignment on exec.
The address limit is already set in flush_old_exec() via set_fs(USER_DS)
so this assignment is redundant.

[ralf@linux-mips.org: also see dac853ae89 for
further explanation.]

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2466/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:23:29 +01:00
Florian Fainelli
c4a5054161 MIPS: AR7: Replace __attribute__((__packed__)) with __packed
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2491/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org
2011-07-25 17:23:20 +01:00
Florian Fainelli
11454100f4 MIPS: AR7: Remove 'space before tabs' in platform.c
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2490/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-25 17:22:49 +01:00
Rob Herring
5fd1a2ed0e arm/dt: Add dtb make rule
Add a make rule to compile dt blobs for ARM.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Tested-by: Jason Liu <jason.hui@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-25 09:52:12 -06:00
Grant Likely
2b4180af3f arm/dt: Add skeleton dtsi file
Contains the bare minimum template required to boot with the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-25 09:52:11 -06:00
Grant Likely
85cad1b0b6 arm/dt: Add dt machine definition
This patch adds a DT_MACHINE_START macro to use instead of
MACHINE_START when creating a machine_desc that supports using the
device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-25 09:52:11 -06:00
Arnd Bergmann
604f4498d0 Merge branch 'tegra/fixes' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc into next/fixes 2011-07-25 17:16:00 +02:00
Michal Simek
c9d761b7c4 microblaze: PCI fix typo fault in of_node pointer moving into pci_bus
Bug introduces in:
powerpc/pci: Make both ppc32 and ppc64 use sysdata for pci_controller
(sha1: b5d937de03)

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:25:27 +02:00
Michal Simek
ca12adc8ca microblaze: Add support for early console on mdm
Support mdm early console:
 - extend time for retries
 - add mdm compatible property

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:25:26 +02:00
Michal Simek
2aa8e37596 microblaze: Simplify early console binding from DT
Recognize early Linux console from chosen - linux,stdout-path
instead of detecting the first console with appropriate
compatible strings.
This patch solved the problem on system with multiple
consoles.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:25:13 +02:00
Michal Simek
e721a45fbe microblaze: Get early printk console earlier
1. Register early console as standard console
2. Enable CON_BOOT console flag to ensure auto-unregistering by the kernel
3. remap_early_printk function remap physical console baseaddr to virtual space

Usage specific function for console remap is done after memory initialization
with IRQ turn off that's why there is not necessary to protect it.

The reason for remapping is that the kernel use TLB 63 for 1:1 address mapping
to be able to use console in very early boot-up phase. But allocating one TLB
just for console caused performance degression that's why ioremaps create new
mapping and TLB 63 is automatically released and ready to use.

Signed-off-by: Michal Simek <monstr@monstr.eu>
CC: Russell King <linux@arm.linux.org.uk>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Ingo Molnar <mingo@redhat.com>
CC: Alan Cox <alan@linux.intel.com>
CC: <linux-serial@vger.kernel.org>
CC: Arnd Bergmann <arnd@arndb.de>
2011-07-25 09:23:47 +02:00
Tomi Valkeinen
6d9f29dd62 OMAP: DSS2: Remove unused code from display.c
oh_core variable is no longer used, so it and its initialization can be
removed.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-07-25 10:22:06 +03:00
Tomi Valkeinen
aea4eb9590 OMAP: DSS2: Remove unused opt_clock_available
opt_clock_available() is no longer needed, so remove it.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-07-25 10:22:05 +03:00
John A. Williams
95ce618f85 microblaze: Standardise cpuinfo output for cache policy
The current cpuinfo output for the cache policy has no leading tag:, making
it difficult to parse.  Add a leaning "Dcache-policy:" tag to this field.

Signed-off-by: John A. Williams <john.williams@petalogix.com>
2011-07-25 09:13:43 +02:00
John A. Williams
8904976e8c microblaze: Unprivileged stream instruction awareness
Add cpuinfo support for the new MicroBlaze option permitting userspace
(unprivileged) access to the streaming instructions (FSL / AXI-stream).

Emit a noisy warning at bootup if this is enabled, because bad user code
can potentially lockup the CPU.

Signed-off-by: John A. Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:13:42 +02:00
Tomi Valkeinen
700dee78dc OMAP: DSS2: Use omap_pm_get_dev_context_loss_count to get ctx loss count
Initialize get_context_loss_count in the DSS board data to
omap_pm_get_dev_context_loss_count, so that omapdss driver can use it.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-07-25 10:08:15 +03:00
Tomi Valkeinen
aac927c93b OMAP: DSS2: rewrite use of context_loss_count
The function to get device's context loss count has changed from

omap_pm_get_last_off_on_transaction_id() to
omap_pm_get_dev_context_loss_count()

Change name of the function pointer in omapdss.h accordingly, and use
the term "context loss count" instead of "context id" in the code.

Restructure the context loss count functions to handle errors properly,
and ensure that context is always considered lost if an error happens.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-07-25 10:08:15 +03:00
Michal Simek
5db34eb92f microblaze: trivial: Fix typo fault
descrtiption -> description

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:07:45 +02:00
Mathias Krause
a0ec99bda8 microblaze: exec: Remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
2011-07-25 09:07:45 +02:00
Mathias Krause
504a84c480 microblaze: Remove duplicated prototype of start_thread()
The prototype for start_thread() is already present in the MMU/NOMMU
independent part of the file. Remove the duplicate.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:07:45 +02:00
Michal Simek
c11389406f microblaze: Fix unaligned value saving to the stack for system with MMU
Several registers weren't saved correctly to the stack.

Unaligned expection for system with MMU stores
value in ex_tmp_data_loc_X address which is load to registers r3.
The next step is to move this value from r3 to a destination
register which caused unaligned exception. For several registers
this value was directly moved to the register.

For example for r28:
by "or r28, r0, r3"

but register r28 was rewritten when kernel returns from exception
handler by value saved on stack.

This patch changed r3 saving to the correct address on the stack.
For example for r28:
by "swi r3, r1, 4 * 28"

When kernel returns from the exception handler, correct value is restored.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-07-25 09:07:45 +02:00
Steven Rostedt
a2f526994e microblaze/irqs: Do not trace arch_local_{*,irq_*} functions
Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
Although they are marked inline, gcc may still make a function out of
them and add it to the pool of functions that are traced by the function
tracer. This can cause undesirable results (kernel panic, triple faults,
etc).

Add the notrace notation to prevent them from ever being traced.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-07-25 09:07:45 +02:00
Linus Torvalds
8405b044e5 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] s5pv210: make needlessly global symbols static
  [CPUFREQ] exynos4210: make needlessly global symbols static
  [CPUFREQ] S3C6410: Add some lower frequencies for 800MHz base clock operation
  [CPUFREQ] S5PV210: Add reboot notifier to prevent system hang
  [CPUFREQ] S5PV210: Adjust udelay prior to voltage scaling down
  [CPUFREQ] S5PV210: Lock a mutex while changing the cpu frequency
  [CPUFREQ] S5PV210: Add pm_notifier to prevent system unstable
  [CPUFREQ] S5PV210: Add arm/int voltage control support
  [CPUFREQ] S5PV210: Add additional symantics for "relation" in cpufreq with pm
  [CPUFREQ] S3C64xx: Notify transition complete as soon as frequency changed
  [CPUFREQ] S3C6410: Support 800MHz operation in cpufreq
  [CPUFREQ] s5pv210-cpufreq.c: Add missing clk_put
  [CPUFREQ] Move compile for S3C64XX cpufreq to /drivers/cpufreq
  [CPUFREQ] Remove some vi noise that escaped into the Makefile.
  [CPUFREQ] Move ARM Samsung cpufreq drivers to drivers/cpufreq/
  [CPUFREQ/S3C64xx] Move S3C64xx CPUfreq driver into drivers/cpufreq
  [CPUFREQ] Handle CPUs with different capabilities in acpi-cpufreq
2011-07-24 20:56:18 -07:00
Geert Uytterhoeven
8c9f08f9de m68k: Revive reporting of spurious interrupts
commit 2502b667ea ("Change the m68knommu irq
handling to use the generic irq framework.") removed the reporting of spurious
interrupts on nommu (68328 and 68360).

Bring it back in a generic way, using "atomic_t irq_err_count", as that's what
most of the other architectures are using.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Geert Uytterhoeven
739735d5fe m68knommu: Move forward declaration of do_IRQ() from machdep.h to irq.h
It is not machine-specific, but common irq infrastructure.
Also add the missing asmlinkage, to match its definition.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Greg Ungerer
35de674982 m68k: fix some atomic operation asm address modes for ColdFire
The ColdFire processors have a much more limited set of addressing modes
that can be used for most instructions. A number of the atomic operations
have already been fixed to limit the addressing modes used with add and
sub instructions when building for ColdFire. But we missed a few.
Fix the remaining atomic operations to be clean for ColdFire processors.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Greg Ungerer
f3c23a28ac m68k: use CPU_HAS_NO_BITFIELDS for signal functions
When reworking bitops.h to be clean for all processor types we introduced
a CONFIG_CPU_HAS_NO_BITFIELDS define to signal whether this processor type
supported the bit field instructions. The ARCH_SIG_BITOPS functions for
m68k use these instruction types. We should base the use of these functions
(or the generic versions) on the CONFIG_CPU_HAS_NO_BITFIELDS define.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Greg Ungerer
7c946199cd m68k: merge and clean up delay.h files
The real difference between the mmu and non-mmu varients of the delay.h
files has nothing to do with having an mmu or not. It is processor family
differences that means slightly different code. Merge the delay_mm.h and
delay_no.h files back into a single file.

The primarly difference we need to deal with is whether the processor
supports a 32bit * 32bit -> 64bit multiply. Without it we need to do some
shift scaling as well as use a 32bit * 32bit -> 32bit multiply. If building
for a multi-CPU type kernel then we must use the simpler mult/shift scaling.

This version of delay code allows the CPU32 family to use a 64bit mul,
since it supports this instruction, the old code did not.

The changes use macros where appropriate to try and optimize constant sized
udelay times. And it removes the use of a fixed lib function for the non-mmu
case. Code size on typical kernel configurations is similar, or only larger
by a few tens of bytes.

Also removed the unused muldiv() code from delay_mm.h.

Build and run tested on ColdFire and ARAnyM. Build tested only on 68328
and 68360 (CPU32).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Greg Ungerer
622e9472dd m68knommu: correctly use trap_init
Currently trap_init() is an empty function for m68knommu. Instead
the vectors are being setup as part of the IRQ initialization.
This is inconsistent with m68k and other architectures.

Change the local init_vectors() to be trap_init(), and init the
vectors at the correct time during startup. This will help merge of
m68k and m68knommu trap code in the furture.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Greg Ungerer
f4a5437333 m68knommu: merge ColdFire 5206 and 5206e platform code
The ColdFire 5206 and 5206e CPU families are almost identical, we can
easily merge the platform support code for them. All the differences
are dealt with in the current include/asm/5206sim.h.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:41 +10:00
Greg Ungerer
171d809df1 m68k: merge mmu and non-mmu bitops.h
The following patch merges the mmu and non-mmu versions of the m68k
bitops.h files. Now there is a good deal of difference between the two
files, but none of it is actually an mmu specific difference. It is
all about the specific m68k/coldfire varient we are targeting. So it
makes an awful lot of sense to merge these into a single bitops.h.

There is a number of ways I can see to factor this code. The approach
I have taken here is to keep the various versions of each macro/function
type together. This means that there is some ifdefery with each to handle
each CPU type.

I have added some comments in a couple of appropriate places to try
and make it clear what the differences we are dealing with are.
Specifically the instruction and addressing mode differences we have
to deal with.

The merged form keeps the same underlying optimizations for each CPU
type for all the general bit clear/set/change and find bit operations.
It does switch to using the generic le operations though, instead of
any local varients.

Build tested on ColdFire, 68328, 68360 (which is cpu32) and 68020+.
Run tested on ColdFire and ARAnyM.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-07-25 11:20:40 +10:00
Greg Ungerer
f941f5caa0 m68k: merge MMU and non MMU versions of system.h
The non-MMU m68k targets can use the same asm/system.h as the MMU
targets. So switch the current system_mm.h to be system.h and remove
system_no.h.

The assembly support code for the non-MMU resume functions needs to
be modified to match the now common switch_to() macro. Specifically
this means correctly saving and restoring the status flags in the case
of the ColdFire resume, and some reordering of the code to not use
registers before they are saved or after they are restored.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:40 +10:00
Greg Ungerer
10f939ff3a m68k: merge MMU and non-MMU versions of asm/hardirq.h
The contents of asm/hardirq.h are pretty strait forward for both the
MMU (hardirq_mm.h) and non-MMU (hardirq_no.h) include files. Merge the
two back into a single file.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:40 +10:00
Greg Ungerer
a66af29876 m68k: merge the non-mmu and mmu versions of module.c
The non-mmu and mmu versions of the module loader module.c are
nearly identical. Merge them back to a single module.c. There is
a little bit of re-ordering of the struct and enum definitions in
module.h to keep the ifdefery to a minimum.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 11:20:40 +10:00
Geert Uytterhoeven
6617eaf33d m68knommu: Fix printk() format in free_initrd_mem()
arch/m68k/mm/init_no.c:123: warning: format "%d" expects type "int", but argument 2 has type "long unsigned int"

And use pr_notice() while we're at it.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 10:44:04 +10:00
Geert Uytterhoeven
45d1564cce m68knommu: Make empty_zero_page "void *", like on m68k
This allows to get rid of the casts.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-07-25 10:44:04 +10:00
Daniel Drake
07d5b38e14 x86, olpc-xo15-sci: Enable EC wakeup capability
Some recent changes to the way that ACPI handles wakeup flags
means that the XO15EC ACPI device is not wakeup-capable by
default so device_set_wakeup_enable() does nothing.

Use device_init_wakeup() to mark the device as wakeup capable,
and to enable wakeups.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Link: http://lkml.kernel.org/r/20110724173430.BE03C9D401C@zog.reactivated.net
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-24 20:16:05 +02:00
Daniel Drake
d8d01a6378 x86, olpc: Fix dependency on POWER_SUPPLY
As reported by Randy Dunlap, CONFIG_POWER_SUPPLY=m caused a
compile error:

  arch/x86/built-in.o: In function `battery_status_changed':
   olpc-xo15-sci.c:(.text+0x3acdd): undefined reference to `power_supply_get_by_name'
   olpc-xo15-sci.c:(.text+0x3ad04): undefined reference to `power_supply_changed'

The SCI drivers, as bool, require POWER_SUPPLY to be builtin.
Use select to make that a hard requirement and avoid this build
failure.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-24 20:14:44 +02:00
Linus Torvalds
b6844e8f64 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (237 commits)
  ARM: 7004/1: fix traps.h compile warnings
  ARM: 6998/2: kernel: use proper memory barriers for bitops
  ARM: 6997/1: ep93xx: increase NR_BANKS to 16 for support of 128MB RAM
  ARM: Fix build errors caused by adding generic macros
  ARM: CPU hotplug: ensure we migrate all IRQs off a downed CPU
  ARM: CPU hotplug: pass in proper affinity mask on IRQ migration
  ARM: GIC: avoid routing interrupts to offline CPUs
  ARM: CPU hotplug: fix abuse of irqdesc->node
  ARM: 6981/2: mmci: adjust calculation of f_min
  ARM: 7000/1: LPAE: Use long long printk format for displaying the pud
  ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state
  ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence
  ARM: ARM_DMA_ZONE_SIZE is no more
  ARM: mach-shark: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ARM: mach-sa1100: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ARM: mach-realview: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ARM: mach-pxa: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ARM: mach-ixp4xx: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ARM: mach-h720x: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ARM: mach-davinci: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
  ...
2011-07-24 10:20:54 -07:00
Linus Torvalds
21c7075fa5 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits)
  [S390] use siginfo for sigtrap signals
  [S390] dasd: add enhanced DASD statistics interface
  [S390] kvm: make sigp emerg smp capable
  [S390] disable cpu measurement alerts on a dying cpu
  [S390] initial cr0 bits
  [S390] iucv cr0 enablement bit
  [S390] race safe external interrupt registration
  [S390] remove tape block docu
  [S390] ap: toleration support for ap device type 10
  [S390] cleanup program check handler prototypes
  [S390] remove kvm mmu reload on s390
  [S390] Use gmap translation for accessing guest memory
  [S390] use gmap address spaces for kvm guest images
  [S390] kvm guest address space mapping
  [S390] fix s390 assembler code alignments
  [S390] move sie code to entry.S
  [S390] kvm: handle tprot intercepts
  [S390] qdio: clear shared DSCI before scheduling the queue handler
  [S390] reference bit testing for unmapped pages
  [S390] irqs: Do not trace arch_local_{*,irq_*} functions
  ...
2011-07-24 09:55:45 -07:00
Linus Torvalds
ff0c4ad2c3 Merge branch 'for-upstream' of git://openrisc.net/jonas/linux
* 'for-upstream' of git://openrisc.net/jonas/linux: (24 commits)
  OpenRISC: Add MAINTAINERS entry
  OpenRISC: Miscellaneous
  OpenRISC: Library routines
  OpenRISC: Headers
  OpenRISC: Traps
  OpenRISC: Module support
  OpenRISC: GPIO
  OpenRISC: Scheduling/Process management
  OpenRISC: Idle/Power management
  OpenRISC: System calls
  OpenRISC: IRQ
  OpenRISC: Timekeeping
  OpenRISC: DMA
  OpenRISC: PTrace
  OpenRISC: Build infrastructure
  OpenRISC: Signal handling
  OpenRISC: Memory management
  OpenRISC: Device tree
  OpenRISC: Boot code
  iomap: make IOPORT/PCI mapping functions conditional
  ...
2011-07-24 09:55:18 -07:00
Linus Torvalds
fcda12e7f6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  modpost: Fix modpost's license checking V3
  module: add /sys/module/<name>/uevent files
  module: change attr callbacks to take struct module_kobject
  modules: make arch's use default loader hooks
  modules: add default loader hook implementations
  param: fix return value handling in param_set_*
2011-07-24 09:54:54 -07:00
Linus Torvalds
5fabc487c9 Merge branch 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (143 commits)
  KVM: IOMMU: Disable device assignment without interrupt remapping
  KVM: MMU: trace mmio page fault
  KVM: MMU: mmio page fault support
  KVM: MMU: reorganize struct kvm_shadow_walk_iterator
  KVM: MMU: lockless walking shadow page table
  KVM: MMU: do not need atomicly to set/clear spte
  KVM: MMU: introduce the rules to modify shadow page table
  KVM: MMU: abstract some functions to handle fault pfn
  KVM: MMU: filter out the mmio pfn from the fault pfn
  KVM: MMU: remove bypass_guest_pf
  KVM: MMU: split kvm_mmu_free_page
  KVM: MMU: count used shadow pages on prepareing path
  KVM: MMU: rename 'pt_write' to 'emulate'
  KVM: MMU: cleanup for FNAME(fetch)
  KVM: MMU: optimize to handle dirty bit
  KVM: MMU: cache mmio info on page fault path
  KVM: x86: introduce vcpu_mmio_gva_to_gpa to cleanup the code
  KVM: MMU: do not update slot bitmap if spte is nonpresent
  KVM: MMU: fix walking shadow page table
  KVM guest: KVM Steal time registration
  ...
2011-07-24 09:07:03 -07:00
Linus Torvalds
c61264f98c Merge branch 'upstream/xen-tracing2' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'upstream/xen-tracing2' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen/trace: use class for multicall trace
  xen/trace: convert mmu events to use DECLARE_EVENT_CLASS()/DEFINE_EVENT()
  xen/multicall: move *idx fields to start of mc_buffer
  xen/multicall: special-case singleton hypercalls
  xen/multicalls: add unlikely around slowpath in __xen_mc_entry()
  xen/multicalls: disable MC_DEBUG
  xen/mmu: tune pgtable alloc/release
  xen/mmu: use extend_args for more mmuext updates
  xen/trace: add tlb flush tracepoints
  xen/trace: add segment desc tracing
  xen/trace: add xen_pgd_(un)pin tracepoints
  xen/trace: add ptpage alloc/release tracepoints
  xen/trace: add mmu tracepoints
  xen/trace: add multicall tracing
  xen/trace: set up tracepoint skeleton
  xen/multicalls: remove debugfs stats
  trace/xen: add skeleton for Xen trace events
2011-07-24 09:06:47 -07:00
Linus Torvalds
a23a334bd5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (34 commits)
  crypto: caam - ablkcipher support
  crypto: caam - faster aead implementation
  crypto: caam - structure renaming
  crypto: caam - shorter names
  crypto: talitos - don't bad_key in ablkcipher setkey
  crypto: talitos - remove unused giv from ablkcipher methods
  crypto: talitos - don't set done notification in hot path
  crypto: talitos - ensure request ordering within a single tfm
  crypto: gf128mul - fix call to memset()
  crypto: s390 - support hardware accelerated SHA-224
  crypto: algif_hash - Handle initial af_alg_make_sg error correctly
  crypto: sha1_generic - use SHA1_BLOCK_SIZE
  hwrng: ppc4xx - add support for ppc4xx TRNG
  crypto: crypto4xx - Perform read/modify/write on device control register
  crypto: caam - fix build warning when DEBUG_FS not configured
  crypto: arc4 - Fixed coding style issues
  crypto: crc32c - Fixed coding style issue
  crypto: omap-sham - do not schedule tasklet if there is no active requests
  crypto: omap-sham - clear device flags when finishing request
  crypto: omap-sham - irq handler must not clear error code
  ...
2011-07-24 09:05:32 -07:00
Al Viro
e55d92b92d get rid of create_proc_entry() abuses - proc_mkdir() is there for purpose
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-24 10:12:33 -04:00
Jonas Bonn
66574cc054 modules: make arch's use default loader hooks
This patch removes all the module loader hook implementations in the
architecture specific code where the functionality is the same as that
now provided by the recently added default hooks.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-07-24 22:06:04 +09:30
Xiao Guangrong
4f0226482d KVM: MMU: trace mmio page fault
Add tracepoints to trace mmio page fault

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:41 +03:00
Xiao Guangrong
ce88decffd KVM: MMU: mmio page fault support
The idea is from Avi:

| We could cache the result of a miss in an spte by using a reserved bit, and
| checking the page fault error code (or seeing if we get an ept violation or
| ept misconfiguration), so if we get repeated mmio on a page, we don't need to
| search the slot list/tree.
| (https://lkml.org/lkml/2011/2/22/221)

When the page fault is caused by mmio, we cache the info in the shadow page
table, and also set the reserved bits in the shadow page table, so if the mmio
is caused again, we can quickly identify it and emulate it directly

Searching mmio gfn in memslots is heavy since we need to walk all memeslots, it
can be reduced by this feature, and also avoid walking guest page table for
soft mmu.

[jan: fix operator precedence issue]

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:40 +03:00
Xiao Guangrong
dd3bfd59db KVM: MMU: reorganize struct kvm_shadow_walk_iterator
Reorganize it for good using the cache

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:39 +03:00
Xiao Guangrong
c2a2ac2b56 KVM: MMU: lockless walking shadow page table
Use rcu to protect shadow pages table to be freed, so we can safely walk it,
it should run fastly and is needed by mmio page fault

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:38 +03:00
Xiao Guangrong
603e0651cf KVM: MMU: do not need atomicly to set/clear spte
Now, the spte is just from nonprsent to present or present to nonprsent, so
we can use some trick to set/clear spte non-atomicly as linux kernel does

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:37 +03:00
Xiao Guangrong
1df9f2dc39 KVM: MMU: introduce the rules to modify shadow page table
Introduce some interfaces to modify spte as linux kernel does:
- mmu_spte_clear_track_bits, it set the spte from present to nonpresent, and
  track the stat bits(accessed/dirty) of spte
- mmu_spte_clear_no_track, the same as mmu_spte_clear_track_bits except
  tracking the stat bits
- mmu_spte_set, set spte from nonpresent to present
- mmu_spte_update, only update the stat bits

Now, it does not allowed to set spte from present to present, later, we can
drop the atomicly opration for X86_32 host, and it is the preparing work to
get spte on X86_32 host out of the mmu lock

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:36 +03:00
Xiao Guangrong
d7c55201e6 KVM: MMU: abstract some functions to handle fault pfn
Introduce handle_abnormal_pfn to handle fault pfn on page fault path,
introduce mmu_invalid_pfn to handle fault pfn on prefetch path

It is the preparing work for mmio page fault support

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:35 +03:00
Xiao Guangrong
fce92dce79 KVM: MMU: filter out the mmio pfn from the fault pfn
If the page fault is caused by mmio, the gfn can not be found in memslots, and
'bad_pfn' is returned on gfn_to_hva path, so we can use 'bad_pfn' to identify
the mmio page fault.
And, to clarify the meaning of mmio pfn, we return fault page instead of bad
page when the gfn is not allowd to prefetch

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:34 +03:00
Xiao Guangrong
c37079586f KVM: MMU: remove bypass_guest_pf
The idea is from Avi:
| Maybe it's time to kill off bypass_guest_pf=1.  It's not as effective as
| it used to be, since unsync pages always use shadow_trap_nonpresent_pte,
| and since we convert between the two nonpresent_ptes during sync and unsync.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:33 +03:00
Xiao Guangrong
bd4c86eaa6 KVM: MMU: split kvm_mmu_free_page
Split kvm_mmu_free_page to kvm_mmu_isolate_page and
kvm_mmu_free_page

One is used to remove the page from cache under mmu lock and the other is
used to free page table out of mmu lock

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:32 +03:00
Xiao Guangrong
aa6bd187af KVM: MMU: count used shadow pages on prepareing path
Move counting used shadow pages from commiting path to preparing path to
reduce tlb flush on some paths

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:31 +03:00
Xiao Guangrong
b90a0e6c81 KVM: MMU: rename 'pt_write' to 'emulate'
If 'pt_write' is true, we need to emulate the fault. And in later patch, we
need to emulate the fault even though it is not a pt_write event, so rename
it to better fit the meaning

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:30 +03:00
Xiao Guangrong
b36c7a7c10 KVM: MMU: cleanup for FNAME(fetch)
gw->pte_access is the final access permission, since it is unified with
gw->pt_access when we walked guest page table:

FNAME(walk_addr_generic):
	pte_access = pt_access & FNAME(gpte_access)(vcpu, pte, true);

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:29 +03:00
Xiao Guangrong
640d9b0dbe KVM: MMU: optimize to handle dirty bit
If dirty bit is not set, we can make the pte access read-only to avoid handing
dirty bit everywhere

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:27 +03:00
Xiao Guangrong
bebb106a5a KVM: MMU: cache mmio info on page fault path
If the page fault is caused by mmio, we can cache the mmio info, later, we do
not need to walk guest page table and quickly know it is a mmio fault while we
emulate the mmio instruction

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:26 +03:00
Xiao Guangrong
af7cc7d1ee KVM: x86: introduce vcpu_mmio_gva_to_gpa to cleanup the code
Introduce vcpu_mmio_gva_to_gpa to translate the gva to gpa, we can use it
to cleanup the code between read emulation and write emulation

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:25 +03:00
Xiao Guangrong
ffb61bb3bc KVM: MMU: do not update slot bitmap if spte is nonpresent
Set slot bitmap only if the spte is present

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:24 +03:00
Xiao Guangrong
052331bea3 KVM: MMU: fix walking shadow page table
Properly check the last mapping, and do not walk to the next level if last spte
is met

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-07-24 11:50:23 +03:00
Glauber Costa
d910f5c106 KVM guest: KVM Steal time registration
This patch implements the kvm bits of the steal time infrastructure.
The most important part of it, is the steal time clock. It is an
continuous clock that shows the accumulated amount of steal time
since vcpu creation. It is supposed to survive cpu offlining/onlining.

[marcelo: fix build with CONFIG_KVM_GUEST=n]

Signed-off-by: Glauber Costa <glommer@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Tested-by: Eric B Munson <emunson@mgebm.net>
CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
CC: Peter Zijlstra <peterz@infradead.org>
CC: Avi Kivity <avi@redhat.com>
CC: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-07-24 11:49:36 +03:00
Martin Schwidefsky
73b7d40ff1 [S390] use siginfo for sigtrap signals
Provide additional information on SIGTRAP by using a sig_info signal.
Use TRAP_BRKPT for breakpoints via illegal operation and TRAP_HWBKPT
for breakpoints via program event recording. Provide the address of
the instruction that caused the breakpoint via si_addr.
While we are at it get rid of tracehook_consider_fatal_signal.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:23 +02:00
Christian Ehrhardt
8bb3a2ebcf [S390] kvm: make sigp emerg smp capable
SIGP emerg needs to pass the source vpu adress into __LC_CPU_ADDRESS of the
target guest.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:22 +02:00
Jan Glauber
cadfce7277 [S390] disable cpu measurement alerts on a dying cpu
The cpu measurement alerts that are used for instance by oprofile
for hardware sampling are not turned off on a cpu that is going
offline. Add the appropriate control register bit that should be
disabled to the list.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:22 +02:00
Martin Schwidefsky
c76e70d378 [S390] initial cr0 bits
Remove outdated bits from the initial cr0 register.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:22 +02:00
Martin Schwidefsky
5beab99100 [S390] iucv cr0 enablement bit
Do not set the cr0 enablement bit for iucv by default in head[31|64].S,
move the enablement to iucv_init in the iucv base layer.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:22 +02:00
Jan Glauber
89c9b66b10 [S390] race safe external interrupt registration
The (un-)register_external_interrupt functions are not race safe if
more than one interrupt handler is added or deleted for an external
interrupt concurrently.

Make the registration / unregistration of external interrupts race safe
by using RCU and a spinlock. RCU is used to avoid a performance penalty
in the external interrupt handler, the register and unregister functions
are protected by the spinlock and are not performance critical.
call_rcu must be used since the SCLP driver uses the interface with
IRQs disabled. Also use the generic list implementation rather than
homebrewn list code.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:22 +02:00
Martin Schwidefsky
fdb204d1a7 [S390] cleanup program check handler prototypes
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Carsten Otte
f7850c9288 [S390] remove kvm mmu reload on s390
This patch removes the mmu reload logic for kvm on s390. Via Martin's
new gmap interface, we can safely add or remove memory slots while
guest CPUs are in-flight. Thus, the mmu reload logic is not needed
anymore.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Carsten Otte
092670cd90 [S390] Use gmap translation for accessing guest memory
This patch removes kvm-s390 internal assumption of a linear mapping
of guest address space to user space. Previously, guest memory was
translated to user addresses using a fixed offset (gmsor). The new
code uses gmap_fault to resolve guest addresses.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Carsten Otte
598841ca99 [S390] use gmap address spaces for kvm guest images
This patch switches kvm from using (Qemu's) user address space to
Martin's gmap address space. This way QEMU does not have to use a
linker script in order to fit large guests at low addresses in its
address space.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Martin Schwidefsky
e5992f2e6c [S390] kvm guest address space mapping
Add code that allows KVM to control the virtual memory layout that
is seen by a guest. The guest address space uses a second page table
that shares the last level pte-tables with the process page table.
If a page is unmapped from the process page table it is automatically
unmapped from the guest page table as well.

The guest address space mapping starts out empty, KVM can map any
individual 1MB segments from the process virtual memory to any 1MB
aligned location in the guest virtual memory. If a target segment in
the process virtual memory does not exist or is unmapped while a
guest mapping exists the desired target address is stored as an
invalid segment table entry in the guest page table.
The population of the guest page table is fault driven.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Jan Glauber
144d634a21 [S390] fix s390 assembler code alignments
The alignment is missing for various global symbols in s390 assembly code.
With a recent gcc and an instruction like stgrl this can lead to a
specification exception if the instruction uses such a mis-aligned address.

Specify the alignment explicitely and while add it define __ALIGN for s390
and use the ENTRY define to save some lines of code.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Martin Schwidefsky
603d1a50ac [S390] move sie code to entry.S
The entry to / exit from sie has subtle dependencies to the first level
interrupt handler. Move the sie assembler code to entry64.S and replace
the SIE_HOOK callback with a test and the new _TIF_SIE bit.
In addition this patch fixes several problems in regard to the check for
the_TIF_EXIT_SIE bits. The old code checked the TIF bits before executing
the interrupt handler and it only modified the instruction address if it
pointed directly to the sie instruction. In both cases it could miss
a TIF bit that normally would cause an exit from the guest and would
reenter the guest context.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:21 +02:00
Christian Borntraeger
bb25b9ba3e [S390] kvm: handle tprot intercepts
When running a kvm guest we can get intercepts for tprot, if the host
page table is read-only or not populated. This patch implements the
most common case (linux memory detection).
This also allows host copy on write for guest memory on newer systems.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:20 +02:00
Steven Rostedt
f433c4aec9 [S390] irqs: Do not trace arch_local_{*,irq_*} functions
Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
Although they are marked inline, gcc may still make a function out of
them and add it to the pool of functions that are traced by the function
tracer. This can cause undesirable results (kernel panic, triple faults,
etc).

Add the notrace notation to prevent them from ever being traced.

Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-07-24 10:48:00 +02:00
Linus Torvalds
6d6be43d4d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (43 commits)
  Blackfin: spi-docs: further clarify GPIO CS behavior with various modes
  Blackfin: boards: fix pcm device name
  Blackfin: SMP: punt unused atomic_test_mask helper
  Blackfin: irqs: do not trace arch_local_{*,irq_*} functions
  Blackfin: bf526: restrict reboot workaround to 0.0 silicon
  Blackfin: bf51x: fix alternative portmux options
  Blackfin: bf54x: fix GPIO resume code
  Blackfin: dpmc: optimize SDRAM programming slightly
  Blackfin: dpmc: don't save/restore scratch registers
  Blackfin: bf538: pull gpio/port logic out of core hibernate paths
  Blackfin: dpmc: optimize hibernate/resume path
  Blackfin: dpmc: do not save/restore EVT0/EVT1/EVT4 when hibernating
  Blackfin: dpmc: relocate hibernate helper macros
  Blackfin: dpmc: omit RETE/RETN when hibernating
  Blackfin: dpmc: optimize SIC_IWR programming a little
  Blackfin: gpio/ints: generalize pint logic
  Blackfin: dpmc: bind to MMR names and not CPUs
  Blackfin: debug-mmrs: generalize pint logic
  Blackfin: bf54x: switch to common pint MMR struct
  Blackfin: bf54x: tweak MMR pint names
  ...
2011-07-23 14:05:44 -07:00
Linus Torvalds
b4db920c7f Merge branches 'x86-detect-hyper-for-linus', 'x86-fpu-for-linus', 'x86-kexec-for-linus', 'x86-platform-for-linus', 'x86-quirks-for-linus', 'x86-tsc-for-linus' and 'x86-smpboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-detect-hyper-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, hyper: Change hypervisor detection order

* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-32, fpu: Fix DNA exception during check_fpu()

* 'x86-kexec-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kexec, x86: Fix incorrect jump back address if not preserving context

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, config: Introduce an INTEL_MID configuration

* 'x86-quirks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, quirks: Use pci_dev->revision

* 'x86-tsc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: tsc: Remove unneeded DMI-based blacklisting

* 'x86-smpboot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, boot: Wait for boot cpu to show up if nr_cpus limit is about to hit
2011-07-23 10:38:21 -07:00
Linus Torvalds
7080d30676 Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, build: Do not set the root_dev field in bzImage
2011-07-23 10:36:09 -07:00
Linus Torvalds
148a7b1725 Merge branch 'x86-atomic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-atomic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Add support for cmpxchg_double
2011-07-23 10:35:43 -07:00
Linus Torvalds
9d0715630e Merge branch 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clocksource: apb: Share APB timer code with other platforms
2011-07-23 10:34:47 -07:00
Linus Torvalds
c0c463d34a Merge branches 'x86-urgent-for-linus', 'core-debug-for-linus', 'irq-core-for-linus' and 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  um: Make rwsem.S depend on CONFIG_RWSEM_XCHGADD_ALGORITHM

* 'core-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  debug: Make CONFIG_EXPERT select CONFIG_DEBUG_KERNEL to unhide debug options

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Remove unused CHECK_IRQ_PER_CPU()

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools, x86: Fix 32-bit compile on 64-bit system
2011-07-23 10:33:08 -07:00
Ohad Ben-Cohen
e72542191c virtio: expose for non-virtualization users too
virtio has been so far used only in the context of virtualization,
and the virtio Kconfig was sourced directly by the relevant arch
Kconfigs when VIRTUALIZATION was selected.

Now that we start using virtio for inter-processor communications,
we need to source the virtio Kconfig outside of the virtualization
scope too.

Moreover, some architectures might use virtio for both virtualization
and inter-processor communications, so directly sourcing virtio
might yield unexpected results due to conflicting selections.

The simple solution offered by this patch is to always source virtio's
Kconfig in drivers/Kconfig, and remove it from the appropriate arch
Kconfigs. Additionally, a virtio menu entry has been added so virtio
drivers don't show up in the general drivers menu.

This way anyone can use virtio, though it's arguably less accessible
(and neat!) for virtualization users now.

Note: some architectures (mips and sh) seem to have a VIRTUALIZATION
menu merely for sourcing virtio's Kconfig, so that menu is removed too.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-07-23 16:20:30 +09:30
Scott Jiang
2b6678c552 Blackfin: boards: fix pcm device name
The pcm driver name has been changed, but the device name has not.

Signed-off-by: Scott Jiang <scott.jiang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:34 -04:00
Mike Frysinger
6ebc2bb92a Blackfin: SMP: punt unused atomic_test_mask helper
No one uses this func, so just punt it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:34 -04:00
Steven Rostedt
a2de3f79b1 Blackfin: irqs: do not trace arch_local_{*,irq_*} functions
Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
Although they are marked inline, gcc may still make a function out of
them and add it to the pool of functions that are traced by the function
tracer. This can cause undesirable results (kernel panic, triple faults,
etc).

Add the notrace notation to prevent them from ever being traced.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:33 -04:00
Mike Frysinger
b0d3dc1291 Blackfin: bf526: restrict reboot workaround to 0.0 silicon
The bug in the BF526 rom when doing a software reset exists only in older
silicon versions, so don't clear SWRST on newer parts.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:33 -04:00
Mike Frysinger
65cd3b5362 Blackfin: bf51x: fix alternative portmux options
The BF51x's alternative portmux Kconfig options were copy & pasted from
the BF52x, but never tweaked to reflect it.  So drop the old options as
they were never used (and were simply wrong), and add the BF51x specific
pieces to the Kconfig and header.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:32 -04:00
Mike Frysinger
fdfb0becea Blackfin: bf54x: fix GPIO resume code
Back in commit c03c2a8734, we fixed logic in the non-bf54x
GPIO resume code to set the data levels properly before the direction
to avoid spurious line glitches.  But we missed the bf54x code paths.
So add the same fix there.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:32 -04:00
Mike Frysinger
9e770f7780 Blackfin: dpmc: optimize SDRAM programming slightly
No need to reload these registers constantly since they're always
available (we're not making any function calls in between).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:31 -04:00
Mike Frysinger
da31d6fb46 Blackfin: dpmc: don't save/restore scratch registers
The Blackfin C ABI says we do not need to save/restore R0-R3 and P0-P2
as they are available as scratch registers.  So don't bother.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:31 -04:00
Mike Frysinger
9466a0510a Blackfin: bf538: pull gpio/port logic out of core hibernate paths
Re-architect how we save/restore the gpio/port logic that only pertains
to bf538/bf539 parts by pulling it out of the core code paths and pushing
it out to bf538-specific locations.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:30 -04:00
Mike Frysinger
eed7b83658 Blackfin: dpmc: optimize hibernate/resume path
The current save logic used in hibernation is to do a MMR load (base +
offset) into a register, and then push that onto the stack.  Then when
restoring, pop off the stack into a register followed by a MMR store
(base + offset).  These use plenty of 32bit insns rather than 16bit,
are pretty long winded, and full of pipeline bubbles.

So, by taking advantage of MMRs that are contiguous, the multi-register
push/pop insn, and register abuse, we can shrink this code considerably.

When saving, the new logic does a lot of loads into the data and pointer
registers before executing a single multi-register push insn.  Then when
restoring, we do a single multi-register pop insn followed by a lot of
stores.  Overall, this allows us to cut the insn count by ~30%, the code
size by ~45%, and drastically reduce the register hazards that trigger
bubbles in the pipeline.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:29 -04:00
Mike Frysinger
d7228e7eb9 Blackfin: dpmc: do not save/restore EVT0/EVT1/EVT4 when hibernating
EVT0 is for emulation, EVT1 is for reset, and EVT4 is the "global int
disable" region.  None of these are used by software (or even hardware),
so don't bother saving/restoring them when we hibernate since nothing
ever uses these in Linux (the only thing they would be useful for is
core-memory scratch, but that's just crazy talk).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:29 -04:00
Mike Frysinger
584ecbaa25 Blackfin: dpmc: relocate hibernate helper macros
This defines only get used in the hibernate code, so remove them from the
global dpmc header as no one else cares.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:28 -04:00
Mike Frysinger
429e257ea3 Blackfin: dpmc: omit RETE/RETN when hibernating
The RETE/RETN registers are only used in emulation(JTAG) and NMI nodes,
or as scratch registers, neither of which need to be saved/restored as
this code doesn't execute at those core event levels.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:28 -04:00
Mike Frysinger
4705a25c06 Blackfin: dpmc: optimize SIC_IWR programming a little
For parts with more than one SIC_IWR, we can optimize the writing
a little bit using better Blackfin insns.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:27 -04:00
Mike Frysinger
01f8e34c98 Blackfin: gpio/ints: generalize pint logic
Have the logic that uses peripheral interrupt blocks key off of pint
defines rather than CPU names so that things are generalized across
families.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:27 -04:00
Mike Frysinger
85c2737ae7 Blackfin: dpmc: bind to MMR names and not CPUs
Have the code work off of MMR names rather than CPU defines so there is
less code to tweak in the future with new parts.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:26 -04:00
Mike Frysinger
0a7e5413ca Blackfin: debug-mmrs: generalize pint logic
Don't bind the code to specific CPU defines.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:26 -04:00
Mike Frysinger
82ed5f73ed Blackfin: bf54x: switch to common pint MMR struct
We have a struct in the headers describing the register layout, so
drop the local duplicate one.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:25 -04:00
Mike Frysinger
b69c920cb1 Blackfin: bf54x: tweak MMR pint names
The hardware block uses the name "request" rather than "irq", so update
the struct accordingly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:25 -04:00
Mike Frysinger
b0759a4d23 Blackfin: bf54x: constify pint register array
The array of pointers to register blocks never changes, so constify it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:24 -04:00
Mike Frysinger
1a9e5bfbd4 Blackfin: gpio: punt unused GPIO_# defines
These defines don't accomplish much as GPIO_# is the same thing as #.
Each CPU already provides helpful symbolic defines like GPIO_<PIN>
which everyone uses, so just punt these # ones.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:24 -04:00
Mike Frysinger
969564508d Blackfin: convert unicode space gremlins
Not sure how these guys slipped in, but they're annoying me.
So bring these unicode space gremlins down to earth to normal
ascii spaces.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:23 -04:00
Mike Frysinger
006669ec21 Blackfin: pwm: implement linux/pwm.h API
For now, this only supports gptimers.  Support for dedicated PWM devices
as found on newer parts to come.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:23 -04:00
Mike Frysinger
e1b5596533 Blackfin: gptimers: add enable/disable by timer id
The API is geared around timer ids, except for the act of enabling
and disabling timers.  So add a small helper to fill out the gap.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:22 -04:00
Steven Miao
353470cc50 Blackfin: make sure percpu section is aligned in XIP builds
The alignment is normally handled by PERCPU(), but we need to do it
ourselves in the XIP build due to the custom layout.

Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:22 -04:00
Mike Frysinger
997f95e190 Blackfin: gptimers: use bfin read/write helpers
Use proper helper macros for reading/writing the MMRs rather than
volatile markings on the struct.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:21 -04:00
Mike Frysinger
24a6b91f69 Blackfin: gptimers: use register structs from common header
Now that asm/gptimers.h has the hardware register struct layout, there's
no need to duplicate things locally.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:21 -04:00
Mike Frysinger
af459864b3 Blackfin: debug-mmrs: use new gptimer_group layout to simplify code
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:20 -04:00
Mike Frysinger
94674b15df Blackfin: debug-mmrs: prevent macro arg from expanding
Passing a non-simple expression in as the addr arg could incorrectly
apply the pointer cast resulting in misbehavior.  Add proper paren.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:20 -04:00
Mike Frysinger
7595ac0711 Blackfin: gptimers: add group structure for hardware register layout
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:19 -04:00
Mathias Krause
a64b384818 Blackfin: exec: remove redundant set_fs(USER_DS)
The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:18 -04:00
Mike Frysinger
979365ba4e Blackfin: update anomaly lists to latest public info
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:18 -04:00
Mike Frysinger
4e12b08b72 Blackfin: bf561-ezkit: change parallel flash from M to Y in defconfig
These flashes are always on the board, so might as well enable them by
default rather than a module.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:17 -04:00
Mike Frysinger
e14062563c Blackfin: debug-mmrs: disable PERIPHERAL_MAP for IMDMA channels
The documentation for the IMDMA channels appears to be incorrect.
These DMA blocks don't actually have PERIPHERAL_MAP MMRs for us
to access.  Attempts to do so lead to system mmr hardware errors.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:18:17 -04:00
Mike Frysinger
ef0531b2e4 Blackfin: debug-mmrs: fix typo in single dmac setup
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:44 -04:00
Mike Frysinger
50f92aa334 Blackfin: convert to asm-generic/mutex-dec.h for all systems
The Blackfin mutex.h is merely a copy of an older asm-generic/mutex-dec.h,
so punt it and just use the common one directly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:43 -04:00
Mike Frysinger
fb1d9be596 Blackfin: optimize double fault boot checking
This moves the double fault data used at boot time into a single struct
which can then easily be addressed with indexed loads rather than having
to explicitly load multiple addresses.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:43 -04:00
Mike Frysinger
072a5cff2f Blackfin: time: replace magic numbers with defines
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:42 -04:00
Mike Frysinger
b648072d3e Blackfin: SMP: optimize start up code a bit
This just imports all of the optimization work done in the
common startup code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:42 -04:00
Mike Frysinger
2f7d63f909 Blackfin: boards: clean up redundant/dead spi resources
The default for the Blackfin SPI driver is 8 bits and dma disabled,
so many of the bfin5xx_spi_chip resources are redundant.  So punt
those parts.

Further, drivers should themselves be declaring 16 bit transfers,
so for those that do, and for the ones which no longer do 16 bit
transfers, drop the bfin5xx_spi_chip resources.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:41 -04:00
Mike Frysinger
9be8631b8a Blackfin: net2272: move pin setup to boards files
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 01:10:41 -04:00
Mike Frysinger
c6cb13f9fe Blackfin: convert to kbuild asm-generic support
No need for one line header stubs.  Just declare it in Kbuild.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23 00:41:23 -04:00
Linus Torvalds
bbd9d6f7fb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (107 commits)
  vfs: use ERR_CAST for err-ptr tossing in lookup_instantiate_filp
  isofs: Remove global fs lock
  jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directory
  fix IN_DELETE_SELF on overwriting rename() on ramfs et.al.
  mm/truncate.c: fix build for CONFIG_BLOCK not enabled
  fs:update the NOTE of the file_operations structure
  Remove dead code in dget_parent()
  AFS: Fix silly characters in a comment
  switch d_add_ci() to d_splice_alias() in "found negative" case as well
  simplify gfs2_lookup()
  jfs_lookup(): don't bother with . or ..
  get rid of useless dget_parent() in btrfs rename() and link()
  get rid of useless dget_parent() in fs/btrfs/ioctl.c
  fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers
  drivers: fix up various ->llseek() implementations
  fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek
  Ext4: handle SEEK_HOLE/SEEK_DATA generically
  Btrfs: implement our own ->llseek
  fs: add SEEK_HOLE and SEEK_DATA flags
  reiserfs: make reiserfs default to barrier=flush
  ...

Fix up trivial conflicts in fs/xfs/linux-2.6/xfs_super.c due to the new
shrinker callout for the inode cache, that clashed with the xfs code to
start the periodic workers later.
2011-07-22 19:02:39 -07:00
Linus Torvalds
8e204874db Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64, vdso: Do not allocate memory for the vDSO
  clocksource: Change __ARCH_HAS_CLOCKSOURCE_DATA to a CONFIG option
  x86, vdso: Drop now wrong comment
  Document the vDSO and add a reference parser
  ia64: Replace clocksource.fsys_mmio with generic arch data
  x86-64: Move vread_tsc and vread_hpet into the vDSO
  clocksource: Replace vread with generic arch data
  x86-64: Add --no-undefined to vDSO build
  x86-64: Allow alternative patching in the vDSO
  x86: Make alternative instruction pointers relative
  x86-64: Improve vsyscall emulation CS and RIP handling
  x86-64: Emulate legacy vsyscalls
  x86-64: Fill unused parts of the vsyscall page with 0xcc
  x86-64: Remove vsyscall number 3 (venosys)
  x86-64: Map the HPET NX
  x86-64: Remove kernel.vsyscall64 sysctl
  x86-64: Give vvars their own page
  x86-64: Document some of entry_64.S
  x86-64: Fix alignment of jiffies variable
2011-07-22 17:05:15 -07:00
Linus Torvalds
3e0b8df79d Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, UV: Correct UV2 BAU destination timeout
  x86, UV: Correct failed topology memory leak
  x86, UV: Remove cpumask_t from the stack
  x86, UV: Rename hubmask to pnmask
  x86, UV: Correct reset_with_ipi()
  x86, UV: Allow for non-consecutive sockets
  x86, UV: Inline header file functions
  x86, UV: Fix smp_processor_id() use in a preemptable region
  x66, UV: Enable 64-bit ACPI MFCG support for SGI UV2 platform
  x86, UV: Clean up uv_mmrs.h
2011-07-22 17:04:55 -07:00
Linus Torvalds
8051207959 Merge branch 'x86-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Kill handle_signal()->set_fs()
  x86, do_signal: Simplify the TS_RESTORE_SIGMASK logic
  x86, signals: Convert the X86_32 code to use set_current_blocked()
  x86, signals: Convert the IA32_EMULATION code to use set_current_blocked()
2011-07-22 17:04:32 -07:00
Linus Torvalds
9e39264ed4 Merge branch 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, numa: Implement pfn -> nid mapping granularity check
  x86, mm: s/PAGES_PER_ELEMENT/PAGES_PER_SECTION/
2011-07-22 17:04:18 -07:00
Linus Torvalds
dc43d9fa73 Merge branch 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mtrr: Use pci_dev->revision
  x86, mtrr: use stop_machine APIs for doing MTRR rendezvous
  stop_machine: implement stop_machine_from_inactive_cpu()
  stop_machine: reorganize stop_cpus() implementation
  x86, mtrr: lock stop machine during MTRR rendezvous sequence
2011-07-22 17:04:04 -07:00
Linus Torvalds
80775068db Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, microcode, AMD: Fix section header size check
  x86, microcode, AMD: Correct buf references
2011-07-22 17:03:52 -07:00
Linus Torvalds
7c6582b28a Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mce: Use mce_sysdev_ prefix to group functions
  x86, mce: Use mce_chrdev_ prefix to group functions
  x86, mce: Cleanup mce_read()
  x86, mce: Cleanup mce_create()/remove_device()
  x86, mce: Check the result of ancient_init()
  x86, mce: Introduce mce_gather_info()
  x86, mce: Replace MCM_ with MCI_MISC_
  x86, mce: Replace MCE_SELF_VECTOR by irq_work
  x86, mce, severity: Clean up trivial coding style problems
  x86, mce, severity: Cleanup severity table
  x86, mce, severity: Make formatting a bit more readable
  x86, mce, severity: Fix two severities table signatures
2011-07-22 17:03:40 -07:00
Linus Torvalds
227ad9bc07 Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, efi: Properly pre-initialize table pointers
  x86, efi: Add infrastructure for UEFI 2.0 runtime services
  x86, efi: Fix argument types for SetVariable()
2011-07-22 17:03:14 -07:00
Linus Torvalds
35b004cce1 Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, intel, power: Correct the MSR_IA32_ENERGY_PERF_BIAS message
  x86, msr: Fix typo in ENERGY_PERF_BIAS_POWERSAVE
  x86, intel, power: Initialize MSR_IA32_ENERGY_PERF_BIAS
2011-07-22 17:02:54 -07:00
Linus Torvalds
0a613b647b Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, smpboot: Mark the names[] array in __inquire_remote_apic() as const
  x86: Convert vmalloc()+memset() to vzalloc()
2011-07-22 17:02:38 -07:00
Linus Torvalds
eb47418dc5 Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix write lock scalability 64-bit issue
  x86: Unify rwsem assembly implementation
  x86: Unify rwlock assembly implementation
  x86, asm: Fix binutils 2.16 issue with __USER32_CS
  x86, asm: Cleanup thunk_64.S
  x86, asm: Flip RESTORE_ARGS arguments logic
  x86, asm: Flip SAVE_ARGS arguments logic
  x86, asm: Thin down SAVE/RESTORE_* asm macros
2011-07-22 17:02:24 -07:00
Linus Torvalds
2c9e88a108 Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, ioapic: Print IR_IO_APIC_route_entry when IR is enabled
  x86, ioapic: Print IRTE when IR is enabled
  x86, x2apic: Preserve high 32-bits of IA32_APIC_BASE MSR
  x86, ioapic: Also print Dest field
  x86, ioapic: Format clean up for IOAPIC output
  x86: print APIC data a little later during boot
2011-07-22 17:02:07 -07:00
Linus Torvalds
52de84f3f3 Merge branch 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Serialize EFI time accesses on rtc_lock
  x86: Serialize SMP bootup CMOS accesses on rtc_lock
  rtc: stmp3xxx: Remove UIE handlers
  rtc: stmp3xxx: Get rid of mach-specific accessors
  rtc: stmp3xxx: Initialize drvdata before registering device
  rtc: stmp3xxx: Port stmp-functions to mxs-equivalents
  rtc: stmp3xxx: Restore register definitions
  rtc: vt8500: Use define instead of hardcoded value for status bit
2011-07-22 16:52:39 -07:00
Linus Torvalds
a99a7d1436 Merge branch 'timers-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  mips: Fix i8253 clockevent fallout
  i8253: Cleanup outb/inb magic
  arm: Footbridge: Use common i8253 clockevent
  mips: Use common i8253 clockevent
  x86: Use common i8253 clockevent
  i8253: Create common clockevent implementation
  i8253: Export i8253_lock unconditionally
  pcpskr: MIPS: Make config dependencies finer grained
  pcspkr: Cleanup Kconfig dependencies
  i8253: Move remaining content and delete asm/i8253.h
  i8253: Consolidate definitions of PIT_LATCH
  x86: i8253: Consolidate definitions of global_clock_event
  i8253: Alpha, PowerPC: Remove unused asm/8253pit.h
  alpha: i8253: Cleanup remaining users of i8253pit.h
  i8253: Remove I8253_LOCK config
  i8253: Make pcsp sound driver use the shared i8253_lock
  i8253: Make pcspkr input driver use the shared i8253_lock
  i8253: Consolidate all kernel definitions of i8253_lock
  i8253: Unify all kernel declarations of i8253_lock
  i8253: Create linux/i8253.h and use it in all 8253 related files
2011-07-22 16:51:56 -07:00