Commit graph

980 commits

Author SHA1 Message Date
Alexey Dobriyan
4e950f6f01 Remove fs.h from mm.h
Remove fs.h from mm.h. For this,
 1) Uninline vma_wants_writenotify(). It's pretty huge anyway.
 2) Add back fs.h or less bloated headers (err.h) to files that need it.

As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files
rebuilt down to 3444 (-12.3%).

Cross-compile tested without regressions on my two usual configs and (sigh):

alpha              arm-mx1ads        mips-bigsur          powerpc-ebony
alpha-allnoconfig  arm-neponset      mips-capcella        powerpc-g5
alpha-defconfig    arm-netwinder     mips-cobalt          powerpc-holly
alpha-up           arm-netx          mips-db1000          powerpc-iseries
arm                arm-ns9xxx        mips-db1100          powerpc-linkstation
arm-assabet        arm-omap_h2_1610  mips-db1200          powerpc-lite5200
arm-at91rm9200dk   arm-onearm        mips-db1500          powerpc-maple
arm-at91rm9200ek   arm-picotux200    mips-db1550          powerpc-mpc7448_hpc2
arm-at91sam9260ek  arm-pleb          mips-ddb5477         powerpc-mpc8272_ads
arm-at91sam9261ek  arm-pnx4008       mips-decstation      powerpc-mpc8313_rdb
arm-at91sam9263ek  arm-pxa255-idp    mips-e55             powerpc-mpc832x_mds
arm-at91sam9rlek   arm-realview      mips-emma2rh         powerpc-mpc832x_rdb
arm-ateb9200       arm-realview-smp  mips-excite          powerpc-mpc834x_itx
arm-badge4         arm-rpc           mips-fulong          powerpc-mpc834x_itxgp
arm-carmeva        arm-s3c2410       mips-ip22            powerpc-mpc834x_mds
arm-cerfcube       arm-shannon       mips-ip27            powerpc-mpc836x_mds
arm-clps7500       arm-shark         mips-ip32            powerpc-mpc8540_ads
arm-collie         arm-simpad        mips-jazz            powerpc-mpc8544_ds
arm-corgi          arm-spitz         mips-jmr3927         powerpc-mpc8560_ads
arm-csb337         arm-trizeps4      mips-malta           powerpc-mpc8568mds
arm-csb637         arm-versatile     mips-mipssim         powerpc-mpc85xx_cds
arm-ebsa110        i386              mips-mpc30x          powerpc-mpc8641_hpcn
arm-edb7211        i386-allnoconfig  mips-msp71xx         powerpc-mpc866_ads
arm-em_x270        i386-defconfig    mips-ocelot          powerpc-mpc885_ads
arm-ep93xx         i386-up           mips-pb1100          powerpc-pasemi
arm-footbridge     ia64              mips-pb1500          powerpc-pmac32
arm-fortunet       ia64-allnoconfig  mips-pb1550          powerpc-ppc64
arm-h3600          ia64-bigsur       mips-pnx8550-jbs     powerpc-prpmc2800
arm-h7201          ia64-defconfig    mips-pnx8550-stb810  powerpc-ps3
arm-h7202          ia64-gensparse    mips-qemu            powerpc-pseries
arm-hackkit        ia64-sim          mips-rbhma4200       powerpc-up
arm-integrator     ia64-sn2          mips-rbhma4500       s390
arm-iop13xx        ia64-tiger        mips-rm200           s390-allnoconfig
arm-iop32x         ia64-up           mips-sb1250-swarm    s390-defconfig
arm-iop33x         ia64-zx1          mips-sead            s390-up
arm-ixp2000        m68k              mips-tb0219          sparc
arm-ixp23xx        m68k-amiga        mips-tb0226          sparc-allnoconfig
arm-ixp4xx         m68k-apollo       mips-tb0287          sparc-defconfig
arm-jornada720     m68k-atari        mips-workpad         sparc-up
arm-kafa           m68k-bvme6000     mips-wrppmc          sparc64
arm-kb9202         m68k-hp300        mips-yosemite        sparc64-allnoconfig
arm-ks8695         m68k-mac          parisc               sparc64-defconfig
arm-lart           m68k-mvme147      parisc-allnoconfig   sparc64-up
arm-lpd270         m68k-mvme16x      parisc-defconfig     um-x86_64
arm-lpd7a400       m68k-q40          parisc-up            x86_64
arm-lpd7a404       m68k-sun3         powerpc              x86_64-allnoconfig
arm-lubbock        m68k-sun3x        powerpc-cell         x86_64-defconfig
arm-lusl7200       mips              powerpc-celleb       x86_64-up
arm-mainstone      mips-atlas        powerpc-chrp32

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-29 17:09:29 -07:00
Rafael J. Wysocki
b0cb1a19d0 Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION
Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid
confusion (among other things, with CONFIG_SUSPEND introduced in the
next patch).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-29 16:45:38 -07:00
Al Viro
55fe977187 viohs: extern on function definition
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:56 -07:00
David S. Miller
1966287dfa [SPARC64]: Mark most of initial bootup asm as .text.init.ref_ok
We can't mark the whole thing init because there are dependencies
in bootloaders that assume that _start, or whatever the image
entry value, is 2 instructions before the "HdrS" signature.

In fact, TILO assumes this entry is always at 0x4000, yikes!

Also, right after the bootloader info area there are OBP strings and
values that get used later in the boot process, and those are not all
provably .init yet.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-24 15:17:33 -07:00
David S. Miller
1b64e7abe7 [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-24 13:24:35 -07:00
David S. Miller
0c0d345e25 [SPARC]: Add missing NOTES section.
This fixes boot failures when the build-id LD option is
actually used, because without it we end up with multiple
PT_LOAD sections which the SILO boot loader cannot handle.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-24 13:24:34 -07:00
Linus Torvalds
6df8cd3d4f Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: ERROR: "sys_ioctl" [arch/sparc64/solaris/solaris.ko] undefined!
  [SPARC32]: Make PAGE_SHARED a read-mostly variable.
  [SPARC32]: Take enable_irq/disable_irq out of line.
  [SPARC32]: clean include/asm-sparc/irq.h
  [SPARC32]: Fix rounding errors in ndelay/udelay implementation.
2007-07-21 20:38:51 -07:00
Christoph Hellwig
3167d93fc0 [SPARC64]: ERROR: "sys_ioctl" [arch/sparc64/solaris/solaris.ko] undefined!
From: Christoph Hellwig <hch@infradead.org>

On Fri, Jul 20, 2007 at 09:24:42AM -0400, Horst H. von Brand wrote:
> When building v2.6.22-3478-g275afca on sparc64 (.config attached) I get:
> 
>   MODPOST vmlinux
>   Building modules, stage 2.
>   MODPOST 463 modules
> ERROR: "sys_ioctl" [arch/sparc64/solaris/solaris.ko] undefined!

Sorry, my fault.

It looked to me like sparc64 exports sys_ioctl on it's own, but it
only exports compat_sys_ioctl on it's own.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-21 19:22:42 -07:00
Thomas Gleixner
82644459c5 NTP: move the cmos update code into ntp.c
i386 and sparc64 have the identical code to update the cmos clock.  Move it
into kernel/time/ntp.c as there are other architectures coming along with the
same requirements.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: David Miller <davem@davemloft.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21 17:49:15 -07:00
Thomas Gleixner
18de5bc4c1 clockevents: fix resume logic
We need to make sure, that the clockevent devices are resumed, before
the tick is resumed. The current resume logic does not guarantee this.

Add CLOCK_EVT_MODE_RESUME and call the set mode functions of the clock
event devices before resuming the tick / oneshot functionality.

Fixup the existing users.

Thanks to Nigel Cunningham for tracking down a long standing thinko,
which affected the jinxed VAIO.

[akpm@linux-foundation.org: xen build fix]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21 17:49:15 -07:00
Sam Ravnborg
1256efd551 [SPARC64]: fix section mismatch warning in mdesc.c
Fix following warning:
WARNING: vmlinux.o(.text+0x35264): Section mismatch: reference to .init.text:__alloc_bootmem (between 'mdesc_bootmem_alloc' and 'mdesc_bootmem_free')

Rename mdesc_mem_ops to *_ops so modpost ignores __init references
and declare mdesc_bootmem_alloc __init since it is only used
during __init context.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:20:56 -07:00
Sam Ravnborg
f0429bf7a0 [SPARC64]: fix section mismatch warning in pci_sunv4
Fix following warning:
WARNING: vmlinux.o(.text+0x3cf50): Section mismatch: reference to .init.text:page_in_phys_avail (between 'pci_sun4v_pbm_init' and 'sun4v_pci_init')

pci_sun4v_pbm_init and sun4v_pci_init was only used under __init
context so declare them _init.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:19:56 -07:00
David S. Miller
cdee99d746 [SPARC64]: Stop using drivers/char/rtc.c
The existing sparc64 mini_rtc driver can handle CMOS based
rtcs trivially with just a few lines of code and the simplifies
things tremendously.

Tested on SB1500.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:15:48 -07:00
David S. Miller
93b3238ef8 [SPARC64]: Fix virq decomposition.
The dev_handle and dev_ino fields don't match up exactly to
the traditional IMAP_IGN and IMAP_INO masks.

So store them away in a table and look them up directly.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:14:55 -07:00
David S. Miller
e83fb17f9b [SPARC64]: Use KERN_ERR in IRQ manipulation error printks.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:14:46 -07:00
David S. Miller
afd69ed142 [SPARC64]: Do not flood log with failed DS messages.
When booting up a control node it's quite common to
not be able to register several service types.

And likewise on guests at least one or two are going
to not be there.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:14:38 -07:00
David S. Miller
5fc986100c [SPARC64]: Handle multiple domain-services-port nodes properly.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:14:23 -07:00
David S. Miller
58fb666643 [SPARC64]: Improve VIO device naming further.
The best scheme to get uniqueness seems to be:

FOO			-- If node lacks "id" property
FOO-$(ID)		-- If node has "id" but parent lacks "cfg-handle"
FOO-$(ID)-$(CFG_HANDLE) -- If node has both

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:14:13 -07:00
David S. Miller
3d6e470236 [SPARC]: Make sure dev_archdata is filled in for all devices.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 17:13:42 -07:00
David S. Miller
c73fcc846c [SPARC]: Fix serial console device detection.
The current scheme works on static interpretation of text names, which
is wrong.

The output-device setting, for example, must be resolved via an alias
or similar to a full path name to the console device.

Paths also contain an optional set of 'options', which starts with a
colon at the end of the path.  The option area is used to specify
which of two serial ports ('a' or 'b') the path refers to when a
device node drives multiple ports.  'a' is assumed if the option
specification is missing.

This was caught by the UltraSPARC-T1 simulator.  The 'output-device'
property was set to 'ttya' and we didn't pick upon the fact that this
is an OBP alias set to '/virtual-devices/console'.  Instead we saw it
as the first serial console device, instead of the hypervisor console.

The infrastructure is now there to take advantage of this to resolve
the console correctly even in multi-head situations in fbcon too.

Thanks to Greg Onufer for the bug report.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 16:59:26 -07:00
Linus Torvalds
2cb7e71422 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/ofcons
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/ofcons:
  Create drivers/of/platform.c
  Create linux/of_platorm.h
  [SPARC/64] Rename some functions like PowerPC
  Begin consolidation of of_device.h
  Begin to consolidate of_device.c
  Consolidate of_find_node_by routines
  Consolidate of_get_next_child
  Consolidate of_get_parent
  Consolidate of_find_property
  Consolidate of_device_is_compatible
  Start split out of common open firmware code
  Split out common parts of prom.h
2007-07-20 09:18:08 -07:00
David S. Miller
78d0012539 [SPARC64]: Fix two year old bug in early bootup asm.
We try to fetch the CIF entry pointer from %o4, but that
can get clobbered by the early OBP calls.  It is saved
in %l7 already, so actually this "mov %o4, %l7" can just
be completely removed with no other changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:50:09 -07:00
David S. Miller
cbc5a06937 [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:30:56 -07:00
Fabio Massimo Di Nitto
74121b699c [SPARC64]: Fix log message type in vio_create_one().
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:28:53 -07:00
David S. Miller
5f7426c0e1 [SPARC64]: Tweak assertions in sun4v_build_virq().
They are too strict.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:28:43 -07:00
David S. Miller
2a26302164 [SPARC64]: Tweak kernel log messages in power_probe().
Use KERN_INFO, add missing newline, etc.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:27:39 -07:00
David S. Miller
91ba3c2128 [SPARC64]: Fix handling of multiple vdc-port nodes.
The "id" property in vdc-port nodes are not unique, they
are all zero.  Therefore assign ID's using the parent's
"cfg-handle" property which will be unique.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:27:18 -07:00
Fabio Massimo Di Nitto
48db7b7c50 [SPARC64]: Fix device type matching in VIO's devspec_show().
with the recent renames, we forgot to update the matches for
devspec. This is required to keep udev working and autoload modules.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:27:10 -07:00
David S. Miller
bc5a2e64a1 [SPARC]: Add sys_fallocate() entries.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:26:47 -07:00
David S. Miller
a376178011 [SPARC64]: Use orderly_poweroff().
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-19 21:26:42 -07:00
Stephen Rothwell
3f23de10f2 Create drivers/of/platform.c
and populate it with the common parts from PowerPC and Sparc[64].

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 14:25:51 +10:00
Stephen Rothwell
37b7754aab [SPARC/64] Rename some functions like PowerPC
This is to make the of merge easier.  Also rename of_bus_type.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 14:24:53 +10:00
Stephen Rothwell
f85ff3056c Begin to consolidate of_device.c
This moves all the common parts for the Sparc, Sparc64 and PowerPC
of_device.c files into drivers/of/device.c.

Apart from the simple move, Sparc gains of_match_node() and a call to
of_node_put in of_release_dev().  PowerPC gains better recovery if
device_create_file() fails in of_device_register().

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:39:59 +10:00
Stephen Rothwell
1ef4d4242d Consolidate of_find_node_by routines
This consolidates the routines of_find_node_by_path, of_find_node_by_name,
of_find_node_by_type and of_find_compatible_device.  Again, the comparison
of strings are done differently by Sparc and PowerPC and also these add
read_locks around the iterations.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:39:06 +10:00
Stephen Rothwell
d1cd355a5e Consolidate of_get_next_child
This adds a read_lock around the child/next accesses on Sparc.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:34:26 +10:00
Stephen Rothwell
e679c5f445 Consolidate of_get_parent
This requires creating dummy of_node_{get,put} routines for sparc and
sparc64.  It also adds a read_lock around the parent accesses.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:32:58 +10:00
Stephen Rothwell
581b605a83 Consolidate of_find_property
The only change here is that a readlock is taken while the property list
is being traversed on Sparc where it was not taken previously.

Also, Sparc uses strcasecmp to compare property names while PowerPC
uses strcmp.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:32:24 +10:00
Stephen Rothwell
0081cbc373 Consolidate of_device_is_compatible
The only difference here is that Sparc uses strncmp to match compatibility
names while PowerPC uses strncasecmp.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:29:51 +10:00
Stephen Rothwell
97e873e5c8 Start split out of common open firmware code
This creates drivers/of/base.c (depending on CONFIG_OF) and puts
the first trivially common bits from the prom.c files into it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:28:41 +10:00
Paul Mundt
20c2df83d2 mm: Remove slab destructors from kmem_cache_create().
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20 10:11:58 +09:00
Fenghua Yu
5fb7dc37dc define new percpu interface for shared data
per cpu data section contains two types of data.  One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus.  In the current kernel, these two sets are
not clearely separated out.  This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.

One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end.  Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.

This patch:

Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
Akinobu Mita
68fc4fabca unregister_chrdev(): ignore the return value
unregister_chrdev() always returns 0.  There is no need to check the return
value.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:43 -07:00
Nick Piggin
83c54070ee mm: fault feedback #2
This patch completes Linus's wish that the fault return codes be made into
bit flags, which I agree makes everything nicer.  This requires requires
all handle_mm_fault callers to be modified (possibly the modifications
should go further and do things like fault accounting in handle_mm_fault --
however that would be for another patch).

[akpm@linux-foundation.org: fix alpha build]
[akpm@linux-foundation.org: fix s390 build]
[akpm@linux-foundation.org: fix sparc build]
[akpm@linux-foundation.org: fix sparc64 build]
[akpm@linux-foundation.org: fix ia64 build]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Richard Curnow <rc@rc0.org.uk>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Still apparently needs some ARM and PPC loving - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:41 -07:00
David S. Miller
a5f8967e17 [SPARC64]: Set vio->desc_buf to NULL after freeing.
Otherwise we trigger assertions on the next link-up.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:26 -07:00
Stephen Rothwell
0785b9dcdc [SPARC]: Mark sparc and sparc64 as not having virt_to_bus
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:22 -07:00
David S. Miller
a4cd184503 [SPARC64]: Handle reset events in vio_link_state_change().
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:13 -07:00
David S. Miller
8a2950cce6 [SPARC64]: Handle LDC resets properly in domain-services driver.
Reset the handshake and per-capability state so that when the
link comes back up we'll renegotiate the DS version and then
reregister all of the services.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:09 -07:00
David S. Miller
6160f63518 [SPARC64]: Massively simplify VIO device layer and support hot add/remove.
Create and destroy VIO devices in response to MD update events.  These
run synchronously inside of the MD update mutex so the VIO layer
doesn't need to do internal locking of any sort.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:04 -07:00
David S. Miller
920c3ed741 [SPARC64]: Add basic infrastructure for MD add/remove notification.
And add dummy handlers for the VIO device layer.  These will be filled
in with real code after the vdc, vnet, and ds drivers are reworked to
have simpler dependencies on the VIO device tree.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:19:51 -07:00
Oleg Nesterov
62715ec832 [SPARC64]: Kill bogus set_fs(KERNEL_DS) in do_rt_sigreturn().
From: Oleg Nesterov <oleg@tv-sign.ru>

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-17 14:37:54 -07:00
David S. Miller
c1e49e3a1b [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-17 12:18:16 -07:00
David S. Miller
41120551fa [SPARC64]: Kill explicit %gl register reference.
Older binutils can't handle it.  Use SET_GL() instead,
which is explicitly for this purpose.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-17 12:18:15 -07:00
Pavel Emelianov
bcdcd8e725 Report that kernel is tainted if there was an OOPS
If the kernel OOPSed or BUGed then it probably should be considered as
tainted.  Thus, all subsequent OOPSes and SysRq dumps will report the
tainted kernel.  This saves a lot of time explaining oddities in the
calltraces.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Added parisc patch from Matthew Wilson  -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:02 -07:00
David S. Miller
778feeb475 [SPARC64]: Fix race between MD update and dr-cpu add.
We need to make sure the MD update occurs before we try to
process dr-cpu configure requests.  MD update and dr-cpu
were being processed by seperate threads so that did not
happen occaisionally.

Fix this by executing all domain services data packets from
a single thread, in order.

This will help simplify some other things as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 17:11:59 -07:00
Fabio Massimo Di Nitto
3ac66e33ea [SPARC64]: SMP build fix.
The UP build fix had some unintended consequences.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 17:11:58 -07:00
David S. Miller
d54bc2793e [SPARC64]: Fix UP build.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:41:51 -07:00
David S. Miller
e0204409df [SPARC64]: dr-cpu unconfigure support.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:32 -07:00
David S. Miller
9918cc2e32 [SPARC64]: Give more accurate errors in dr_cpu_configure().
When cpu_up() fails, we can discern the most likely cause.

If cpu_present() is false, this means the cpu did not appear
in the MD.  If -ENODEV is the error return value, then
the processor did not boot properly into the kernel.

Pass this information back in the dr-cpu response packet.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:24 -07:00
David S. Miller
39dd992aee [SPARC64]: Clear cpu_{core,sibling}_map[] in smp_fill_in_sib_core_maps()
When we hot-plug in new cpus, the core_id and proc_id of existing
cpus can change.  So in order to set the cpu groups correctly we
need to clear the maps out completely first.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:19 -07:00
David S. Miller
b37d40d175 [SPARC64]: Fix leak when DR added cpu does not bootup.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:15 -07:00
David S. Miller
b53bcb6799 [SPARC64]: Add ->set_affinity IRQ handlers.
dr-cpu unconfigure requests will walk throught he enabled
IRQs and trigger ->set_affinity so that the going-down
cpu no longer has INOs targetted to it.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:11 -07:00
David S. Miller
bd0e11ff22 [SPARC64]: Process dr-cpu events in a kthread instead of workqueue.
This will be necessary to handle unconfigure requests
properly.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:07 -07:00
David S. Miller
8b99cfb8cc [SPARC64]: More sensible udelay implementation.
Take a page from the powerpc folks and just calculate the
delay factor directly.

Since frequency scaling chips use a system-tick register,
the value is going to be the same system-wide.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:02 -07:00
David S. Miller
27a2ef382c [SPARC64]: SMP build fixes.
With the move of ldom_startcpu_cpuid() into smp.c some other
things need to follow along:

1) smp.c is not a driver so we can't use "PFX" macro in the
   printk calls.

2) smp.c now needs asm/io.h and asm/hvtramp.h, ds.c no longer
   does

3) kimage_addr_to_ra() also needs to move into smp.c

While we're here, update copyright info and my email address
in smp.c

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:58 -07:00
David S. Miller
8f3fff2050 [SPARC64]: mdesc.c needs linux/mm.h
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:53 -07:00
David S. Miller
b14f5c100c [SPARC64]: Fix build regressions added by dr-cpu changes.
Do not select HOTPLUG_CPU from SUN_LDOMS, that causes
HOTPLUG_CPU to be selected even on non-SMP which is
illegal.

Only build hvtramp.o when SMP, just like trampoline.o

Protect dr-cpu code in ds.c with HOTPLUG_CPU.

Likewise move ldom_startcpu_cpuid() to smp.c and protect
it and the call site with SUN_LDOMS && HOTPLUG_CPU.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:49 -07:00
David S. Miller
f8be339c02 [SPARC64]: Unconditionally register vio_bus_type.
The VIO drivers register themselves unconditionally just
like those of any other bus type, so to avoid crashes
on non-VIO systems we need to always register vio_bus_type.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:45 -07:00
David S. Miller
4f0234f4f9 [SPARC64]: Initial LDOM cpu hotplug support.
Only adding cpus is supports at the moment, removal
will come next.

When new cpus are configured, the machine description is
updated.  When we get the configure request we pass in a
cpu mask of to-be-added cpus to the mdesc CPU node parser
so it only fetches information for those cpus.  That code
also proceeds to update the SMT/multi-core scheduling bitmaps.

cpu_up() does all the work and we return the status back
over the DS channel.

CPUs via dr-cpu need to be booted straight out of the
hypervisor, and this requires:

1) A new trampoline mechanism.  CPUs are booted straight
   out of the hypervisor with MMU disabled and running in
   physical addresses with no mappings installed in the TLB.

   The new hvtramp.S code sets up the critical cpu state,
   installs the locked TLB mappings for the kernel, and
   turns the MMU on.  It then proceeds to follow the logic
   of the existing trampoline.S SMP cpu bringup code.

2) All calls into OBP have to be disallowed when domaining
   is enabled.  Since cpus boot straight into the kernel from
   the hypervisor, OBP has no state about that cpu and therefore
   cannot handle being invoked on that cpu.

   Luckily it's only a handful of interfaces which can be called
   after the OBP device tree is obtained.  For example, rebooting,
   halting, powering-off, and setting options node variables.

CPU removal support will require some infrastructure changes
here.  Namely we'll have to process the requests via a true
kernel thread instead of in a workqueue.  workqueues run on
a per-cpu thread, but when unconfiguring we might need to
force the thread to execute on another cpu if the current cpu
is the one being removed.  Removal of a cpu also causes the kernel
to destroy that cpu's workqueue running thread.

Another issue on removal is that we may have interrupts still
pointing to the cpu-to-be-removed.  So new code will be needed
to walk the active INO list and retarget those cpus as-needed.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:40 -07:00
David S. Miller
b3e13fbeb9 [SPARC64]: Fix setting of variables in LDOM guest.
There is a special domain services capability for setting
variables in the OBP options node.  Guests don't have permanent
store for the OBP variables like a normal system, so they are
instead maintained in the LDOM control node or in the SC.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:36 -07:00
David S. Miller
83292e0a9c [SPARC64]: Fix MD property lifetime bugs.
Property values cannot be referenced outside of
mdesc_grab()/mdesc_release() pairs.  The only major
offender was the VIO bus layer, easily fixed.

Add some commentary to mdesc.h describing these rules.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:33 -07:00
David S. Miller
43fdf27470 [SPARC64]: Abstract out mdesc accesses for better MD update handling.
Since we have to be able to handle MD updates, having an in-tree
set of data structures representing the MD objects actually makes
things more painful.

The MD itself is easy to parse, and we can implement the existing
interfaces using direct parsing of the MD binary image.

The MD is now reference counted, so accesses have to now take the
form:

	handle = mdesc_grab();

	... operations on MD ...

	mdesc_release(handle);

The only remaining issue are cases where code holds on to references
to MD property values.  mdesc_get_property() returns a direct pointer
to the property value, most cases just pull in the information they
need and discard the pointer, but there are few that use the pointer
directly over a long lifetime.  Those will be fixed up in a subsequent
changeset.

A preliminary handler for MD update events from domain services is
there, it is rudimentry but it works and handles all of the reference
counting.  It does not check the generation number of the MDs,
and it does not generate a "add/delete" list for notification to
interesting parties about MD changes but that will be forthcoming.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:28 -07:00
David S. Miller
133f09a169 [SPARC64]: Use more mearningful names for IRQ registry.
All of the interrupts say "LDX RX" and "LDX TX" currently
which is next to useless.  Put a device specific prefix
before "RX" and "TX" instead which makes it much more
useful.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:24 -07:00
David S. Miller
e450992d13 [SPARC64]: Initial domain-services driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:20 -07:00
David S. Miller
13077d8028 [SPARC64]: Export powerd facilities for external entities.
Besides the existing usage for power-button interrupts, we'll
want to make use of this code for domain-services where the
LDOM manager can send reboot requests to the guest node.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:16 -07:00
David S. Miller
2c4f4ecb7a [SPARC64]: Add domain-services nodes to VIO device tree.
They sit under the root of the MD tree unlike the rest of
the LDC channel based virtual devices.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:13 -07:00
David S. Miller
cb48123584 [SPARC64]: Assorted LDC bug cures.
1) LDC_MODE_RELIABLE is deprecated an unused by anything, plus
   it and LDC_MODE_STREAM were mis-numbered.

2) read_stream() should try to read as much as possible into
   the per-LDC stream buffer area, so do not trim the read_nonraw()
   length by the caller's size parameter.

3) Send data ACKs when necessary in read_nonraw().

4) In read_nonraw() when we get a pure ACK, advance the RX head
   unconditionally past it.

5) Provide the ACKID field in the ldcdgb() packet dump in read_nonraw().
   This helps debugging stream mode LDC channel problems.

6) Decrease verbosity of rx_data_wait() so that it is more useful.
   A debugging message each loop iteration is too much.

7) In process_data_ack() stop the loop checking when we hit lp->tx_tail
   not lp->tx_head.

8) Set the seqid field properly in send_data_nack().

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:09 -07:00
David S. Miller
5a606b72a4 [SPARC64]: Do not ACK an INO if it is disabled or inprogress.
This is also a partial workaround for a bug in the LDOM firmware which
double-transmits RX inos during high load.  Without this, such an
event causes the kernel to loop forever in the interrupt call chain
ACK'ing but never actually running the IRQ handler (and thus clearing
the interrupt condition in the device).

There is still a bad potential effect when double INOs occur,
not covered by this changeset.  Namely, if the INO is already on
the per-cpu INO vector list, we still blindly re-insert it and
thus we can end up losing interrupts already linked in after
it.

We could deal with that by traversing the list before insertion,
but that's too expensive for this edge case.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:05 -07:00
David S. Miller
e53e97ce3c [SPARC64]: Add LDOM virtual channel driver and VIO device layer.
Virtual devices on Sun Logical Domains are built on top
of a virtual channel framework.  This, with help of hypervisor
interfaces, provides a link layer protocol with basic
handshaking over which virtual device clients and servers
communicate.

Built on top of this is a VIO device protocol which has it's
own handshaking and message types.  At this layer attributes
are exchanged (disk size, network device addresses, etc.)
descriptor rings are registered, and data transfers are
triggers and replied to.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:03:18 -07:00
Matthew Wilcox
36e235901f PCI: Only build PCI syscalls on architectures that want them
The PCI syscalls are built on every architecture except X86, but only
a few have ever hooked them up.  Use a new Kconfig symbol to save a
couple of kB on the architectures that have never used the syscalls.
Tested on x86 and ia64 only.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:13 -07:00
Auke Kok
b8a3a5214d PCI: read revision ID by default
Currently there are 97 occurrences where drivers need the pci
revision ID. We can do this once for all devices. Even the pci
subsystem needs the revision several times for quirks. The extra
u8 member pads out nicely in the pci_dev struct.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:09 -07:00
Ingo Molnar
0437e109e1 sched: zap the migration init / cache-hot balancing code
the SMP load-balancer uses the boot-time migration-cost estimation
code to attempt to improve the quality of balancing. The reason for
this code is that the discrete priority queues do not preserve
the order of scheduling accurately, so the load-balancer skips
tasks that were running on a CPU 'recently'.

this code is fundamental fragile: the boot-time migration cost detector
doesnt really work on systems that had large L3 caches, it caused boot
delays on large systems and the whole cache-hot concept made the
balancing code pretty undeterministic as well.

(and hey, i wrote most of it, so i can say it out loud that it sucks ;-)

under CFS the same purpose of cache affinity can be achieved without
any special cache-hot special-case: tasks are sorted in the 'timeline'
tree and the SMP balancer picks tasks from the left side of the
tree, thus the most cache-cold task is balanced automatically.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09 18:51:57 +02:00
David S. Miller
a357b8f42e [SPARC64]: Need to set state to IDLE during sun4v IRQ enable.
This fixes hypervisor console interrupts on LDOM guests.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-26 00:13:31 -07:00
David S. Miller
1245088400 [SPARC64]: Fix VIRQ enabling.
We were doing the wrong call to turn them on, and also
when enabling we need to forcefully set the state to IDLE.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-26 00:13:09 -07:00
David S. Miller
fc395f8d58 [SPARC64]: Fix args to sun4v_ldc_revoke().
First argument is LDC channel ID, then mapping cookie,
then the MTE revoke cookie.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-13 00:01:27 -07:00
David S. Miller
56f5c0bd50 [SPARC64]: Fix IO/MEM space sizing for PCI.
In pci_determine_mem_io_space(), do not hard code the region sizes.
Instead, use the values given to us in the ranges property.

Thanks goes to Mikael Petterson for the original Xorg failure
bug repoert, and strace dumps from Mikael and Dmitry Artamonow.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-13 00:01:19 -07:00
David S. Miller
4a907dec98 [SPARC64]: Wire up cookie based sun4v interrupt registry.
This will be used for logical domain channel interrupts.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-13 00:01:04 -07:00
David S. Miller
8c2786cfa6 [SPARC64]: Handle PCI bridges without 'ranges' property.
This fixes the IDE controller not showing up on Netra-T1
systems.

Just like Simba bridges, some PCI bridges can lack the
'ranges' OBP property.  So we handle this similarly to
the existing Simba code:

1) In of_device register address resolving, we push the
   translation to the parent.

2) In PCI device scanning, we interrogate the PCI config
   space registers of the PCI bus device in order to resolve
   the resources, just like the generic Linux PCI probing
   code does.

With much help and testing from Fabio, who also reported
the initial problem.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Fabio Massimo Di Nitto <fabbione@ubuntu.com>
2007-06-07 21:59:44 -07:00
Robert P. J. Day
ea1ff19ce0 [SPARC64]: Include <linux/rwsem.h> instead of <asm/rwsem.h>.
To be consistent with other architectures, include the generic version
of rwsem.h.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-07 20:24:50 -07:00
David S. Miller
ec4d18f219 [SPARC64]: Fix SBUS IRQ regression caused by PCI-E driver.
We used to access the 64-bit IRQ IMAP and ICLR registers of bus
controllers 4-bytes in and as a 32-bit register word, since only the
low 32-bits were relevant.  This seemed like a good idea at the time.

But the PCI-E controller requires full 8-byte 64-bit access to
these registers, so we switched over to accessing them fully.

SBUS was not adjusted properly, which broke interrupts completely.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-07 16:59:51 -07:00
David S. Miller
321566c250 [SPARC64]: Fix 2 bugs in PCI Sabre bus scanning.
If we are on hummingbird, bus runs at 66MHZ.

pbm->pci_bus should be setup with the result of pci_scan_one_pbm()
or else we deref NULL pointers in the error interrupt handlers.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-07 16:59:46 -07:00
David S. Miller
a2f9f6bbb3 [SPARC64]: Fix {mc,smt}_capable().
It's not just sun4v hypervisor platforms that should return true
for this, sun4u with UltraSPARC-IV should return true too.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:50:05 -07:00
David S. Miller
5cd342df96 [SPARC64]: Make core and sibling groups equal on UltraSPARC-IV.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:50:02 -07:00
David S. Miller
f78eae2e6f [SPARC64]: Proper multi-core scheduling support.
The scheduling domain hierarchy is:

   all cpus -->
      cpus that share an instruction cache -->
          cpus that share an integer execution unit

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:50:00 -07:00
David Miller
d887ab3a9b [SPARC64]: Provide mmu statistics via sysfs.
If the system supports hypervisor based statistics, allow them to
be fetched, enabled, and disabled via sysfs.

Enable and disable via the boolean:

/sys/devices/systems/cpu/cpuN/mmustat_enable

Statistic values are provided under:

/sys/devices/systems/cpu/cpuN/mmu_status/

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:49:57 -07:00
David Miller
48b6735640 [SPARC64]: Fix service channel hypervisor function names.
sed 's/scv/svc/'

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:49:54 -07:00
David S. Miller
d1f253e60a [SPARC64]: Export basic cpu properties via sysfs.
Cache sizes, udelay_val, and clock_tick.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:49:51 -07:00
David S. Miller
eff3414b72 [SPARC64]: Move topology init code into new file, sysfs.c
Also, use per-cpu data for struct cpu.  Calling kmalloc for
each cpu in topology_init() is just plain clumsy.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:49:50 -07:00
Linus Torvalds
54ca412336 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix:
  sparc64: fix alignment bug in linker definition script
2007-05-31 12:33:16 -07:00
David S. Miller
dbbe3cb8cf [SPARC64]: Add missing NCS and SVC hypervisor interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-31 01:52:48 -07:00
Sam Ravnborg
4096b46f01 sparc64: fix alignment bug in linker definition script
The RO_DATA section were hardcoded to a specific
alignment in include/asm-generic/vmlinux.h.
But for sparc64 this did not match the PAGE_SIZE.

Introduce a new section definition named:
RO_DATA that takes actual alignment as parameter.
RODATA are provided for backward compatibility.

On top of this avoid hardcoding alignment for
sparc64 in reset of the script
Fix is build-tested on sparc64 + x86_64.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-29 21:29:00 +02:00
David S. Miller
7db35f31cb [SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry.
Several interfaces were missing and others misnumbered or
improperly documented.

Also, make sure to check the return value when registering
the kernel TSBs with the hypervisor.  This helped to find
the 4MB kernel TSB alignment bug fixed in a previous changeset.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:52:15 -07:00
David S. Miller
2d9e2763c2 [SPARC64]: Fix two bugs wrt. kernel 4MB TSB.
1) The TSB lookup was not using the correct hash mask.

2) It was not aligned on a boundary equal to it's size,
   which is required by the sun4v Hypervisor.

wasn't having it's return value checked, and that bug will be fixed up
as well in a subsequent changeset.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:51:38 -07:00
David S. Miller
679292993c [SPARC64]: Fix _PAGE_EXEC_4U check in sun4u I-TLB miss handler.
It was using an immediate _PAGE_EXEC_4U value in an 'and'
instruction to perform the test.  This doesn't work because
the immediate field is signed 13-bit, this the mask being
tested against the PTE was 0x1000 sign-extended to 32-bits
instead of just plain 0x1000.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:50:15 -07:00
Horst H. von Brand
7189859f28 [SPARC64]: arch/sparc64/time.c doesn't compile on Ultra 1 (no PCI)
This is bug 8540 on bugzilla.kernel.org

arch/sparc64/time.c contains references to assorted bq4802 stuff if
CONFIG_PCI is not set, and compile fails. I #ifdef'ed out everything
that looks PCI-ish in that file.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:50:02 -07:00
David S. Miller
22adb358e8 [SPARC64]: Eliminate NR_CPUS limitations.
Cheetah systems can have cpuids as large as 1023, although physical
systems don't have that many cpus.

Only three limitations existed in the kernel preventing arbitrary
NR_CPUS values:

1) dcache dirty cpu state stored in page->flags on
   D-cache aliasing platforms.  With some build time
   calculations and some build-time BUG checks on
   page->flags layout, this one was easily solved.

2) The cheetah XCALL delivery code could only handle
   a cpumask with up to 32 cpus set.  Some simple looping
   logic clears that up too.

3) thread_info->cpu was a u8, easily changed to a u16.

There are a few spots in the kernel that still put NR_CPUS
sized arrays on the kernel stack, but that's not a sparc64
specific problem.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:49 -07:00
David S. Miller
5cbc307373 [SPARC64]: Use machine description and OBP properly for cpu probing.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:41 -07:00
David S. Miller
e01c0d6d8c [SPARC64]: Negotiate hypervisor API for PCI services.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:34 -07:00
David S. Miller
22d6a1cba3 [SPARC64]: Report proper system soft state to the hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:29 -07:00
David S. Miller
36b48973b8 [SPARC64]: Fix typo in sun4v_hvapi_register error handling.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:21 -07:00
David S. Miller
5840fc66bb [SPARC64]: PCI device scan is way too verbose by default.
These messages were very useful when bringing up the
OBP based PCI device scan code, but it's just a lot
of noise every bootup now especially on big machines.

The messages can be re-enabled via 'ofpci_debug=1' on
the kernel command line.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:18 -07:00
David S. Miller
59db8102bd [SPARC64]: Don't be picky about virtual-dma values on sun4v.
Handle arbitrary base and length values as long as they
are multiples of IO_PAGE_SIZE.

Bug found by Arun Kumar Rao.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:15 -07:00
Sam Ravnborg
ca967258b6 all-archs: consolidate .data section definition in asm-generic
With this consolidation we can now modify the .data
section definition in one spot for all archs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19 09:11:57 +02:00
Sam Ravnborg
7664709b44 all-archs: consolidate .text section definition in asm-generic
Move definition of .text section to asm-generic.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-19 09:11:57 +02:00
David S. Miller
03983ab858 [SPARC64]: Fix sched_clock() et al.
SPARC64_NSEC_PER_CYC_SHIFT was set too high.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-17 22:55:26 -07:00
David S. Miller
c7754d465b [SPARC64]: Add hypervisor API negotiation and fix console bugs.
Hypervisor interfaces need to be negotiated in order to use
some API calls reliably.  So add a small set of interfaces
to request API versions and query current settings.

This allows us to fix some bugs in the hypervisor console:

1) If we can negotiate API group CORE of at least major 1
   minor 1 we can use con_read and con_write which can improve
   console performance quite a bit.

2) When we do a console write request, we should hold the
   spinlock around the whole request, not a byte at a time.
   What would happen is that it's easy for output from
   different cpus to get mixed with each other.

3) Use consistent udelay() based polling, udelay(1) each
   loop with a limit of 1000 polls to handle stuck hypervisor
   console.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-15 20:23:02 -07:00
David S. Miller
be35cf01a9 [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-14 04:19:01 -07:00
David S. Miller
17f34f0ec9 [SPARC64]: Add missing cpus_empty() check in hypervisor xcall handling.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-14 02:01:52 -07:00
David S. Miller
49d23cfcec [SPARC64]: Be more resiliant with PCI I/O space regs.
If we miss on the ranges, just toss the translation up to the parent
instead of failing.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-13 22:01:18 -07:00
David S. Miller
8354c5b726 [SPARC]: Wire up signalfd/timerfd/eventfd syscalls.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 22:06:51 -07:00
David S. Miller
d037e0532e [SPARC64]: Add support for bq4802 TOD chip, as found on ultra45.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:27 -07:00
David S. Miller
95d71e663e [SPARC64]: Correct FIRE_IOMMU_FLUSHINV register offset.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:26 -07:00
David S. Miller
d77311f942 [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:24 -07:00
David S. Miller
f16537bac7 [SPARC64]: pci_resource_adjust() cannot be __init.
Noticed by Meelis Roos.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:22 -07:00
Simon Arlott
e5dd42e4fb [SPARC64]: Spelling fixes.
Spelling fixes in arch/sparc64/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:21 -07:00
David S. Miller
e9429eacd7 [SPARC64]: Kill LARGE_ALLOCS and update defconfig.
Let's use SLUB, since it works now, in order to get it
tested a bit.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:19 -07:00
Amy Griffis
e54dc2431d [PATCH] audit signal recipients
When auditing syscalls that send signals, log the pid and security
context for each target process. Optimize the data collection by
adding a counter for signal-related rules, and avoiding allocating an
aux struct unless we have more than one target process. For process
groups, collect pid/context data in blocks of 16. Move the
audit_signal_info() hook up in check_kill_permission() so we audit
attempts where permission is denied.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2007-05-11 05:38:25 -04:00
Amy Griffis
7f13da40e3 [PATCH] add SIGNAL syscall class (v3)
Add a syscall class for sending signals.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2007-05-11 05:38:25 -04:00
Linus Torvalds
0ab598099c Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Use alloc_pci_dev() in PCI bus probes.
  [SPARC64]: Bump PROMINTR_MAX to 32.
  [SPARC64]: Fix recursion in PROM tree building.
  [SERIAL] sunzilog: Interrupt enable before ISR handler installed
  [SPARC64] PCI: Consolidate PCI access code into pci_common.c
2007-05-10 13:32:05 -07:00
David S. Miller
26e6385f14 [SPARC64]: Use alloc_pci_dev() in PCI bus probes.
Otherwise MSI explodes because pci_msi_init_pci_dev() does not
get invoked.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-10 02:16:27 -07:00
David S. Miller
aa5242e78f [SPARC64]: Fix recursion in PROM tree building.
Use iteration for scanning of PROM node siblings.

Based upon a patch by Greg Onufer, who found this bug.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-10 00:53:29 -07:00
Fernando Luis Vazquez Cao
2f4dfe206a Remove hardcoding of hard_smp_processor_id on UP systems
With the advent of kdump, the assumption that the boot CPU when booting an UP
kernel is always the CPU with a particular hardware ID (often 0) (usually
referred to as BSP on some architectures) is not valid anymore.  The reason
being that the dump capture kernel boots on the crashed CPU (the CPU that
invoked crash_kexec), which may be or may not be that particular CPU.

Move definition of hard_smp_processor_id for the UP case to
architecture-specific code ("asm/smp.h") where it belongs, so that each
architecture can provide its own implementation.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Andi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:48 -07:00
David S. Miller
ca3dd88e41 [SPARC64] PCI: Consolidate PCI access code into pci_common.c
All the sun4u controllers do the same thing to compute the physical
I/O address to poke, and we can move the sun4v code into this common
location too.

This one needs a bit of testing, in particular the Sabre code had some
funny stuff that would break up u16 and/or u32 accesses into pieces
and I didn't think that was needed any more.  If it is we need to find
out why and add back code to do it again.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-09 02:35:27 -07:00
David S. Miller
127cda1e8c [SPARC64]: Optimize fault kprobe handling just like powerpc.
And eliminate DIE_GPF while we're at it.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 18:25:14 -07:00
David S. Miller
6c1142602c [SPARC]: Wire up utimensat syscall.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 17:50:14 -07:00
David S. Miller
af80318eb7 [SPARC64]: Fix request_irq() ignored result warnings in PCI controller code.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 17:23:31 -07:00
David S. Miller
c57c2ffb15 [SPARC64]: Kill asm-sparc64/pbm.h
Everything it contains can be hidden in pci_impl.h

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:43:08 -07:00
David S. Miller
28113a9941 [SPARC64]: Removal of trivial pci_controller_info uses.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:44 -07:00
David S. Miller
6c108f1299 [SPARC64]: Move index info pci_pbm_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:40 -07:00
David S. Miller
e9870c4c0a [SPARC64]: Move {setup,teardown}_msi_irq into pci_pbm_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:36 -07:00
David S. Miller
f1cd8de2c9 [SPARC64]: Move pci_ops into pci_pbm_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:32 -07:00
David S. Miller
96a496fd49 [SPARC64] SBUS: Error interrupt registry cleanups.
Do not use IRQF_SHARED, these interrupt numbers should all
be unique.

Also use name strings without spaces in them just like
PCI controller drivers do, for consistency.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:28 -07:00
David S. Miller
34768bc832 [SPARC64] PCI: Use root list of pbm's instead of pci_controller_info's
The idea is to move more and more things into the pbm,
with the eventual goal of eliminating the pci_controller_info
entirely as there really isn't any need for it.

This stage of the transformations requires some reworking of
the PCI error interrupt handling.

It might be tricky to get rid of the pci_controller_info parenting for
a few reasons:

1) When we get an uncorrectable or correctable error we want
   to interrogate the IOMMU and streaming cache of both
   PBMs for error status.  These errors come from the UPA
   front-end which is shared between the two PBM PCI bus
   segments.

   Historically speaking this is why I choose the datastructure
   hierarchy of pci_controller_info-->pci_pbm_info

2) The probing does a portid/devhandle match to look for the
   'other' pbm, but this is entirely an artifact and can be
   eliminated trivially.

What we could do to solve #1 is to have a "buddy" pointer from one pbm
to another.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:24 -07:00
David S. Miller
cfa0652c4e [SPARC64] PCI: Use common routine to fetch PBM properties.
Namely bus-range and ino-bitmap.

This allows us also to eliminate pci_controller_info's
pci_{first,last}_busno fields as only the pbm ones are
used now.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:12 -07:00
Ulrich Drepper
1c710c896e utimensat implementation
Implement utimensat(2) which is an extension to futimesat(2) in that it

a) supports nano-second resolution for the timestamps
b) allows to selectively ignore the atime/mtime value
c) allows to selectively use the current time for either atime or mtime
d) supports changing the atime/mtime of a symlink itself along the lines
   of the BSD lutimes(3) functions

For this change the internally used do_utimes() functions was changed to
accept a timespec time value and an additional flags parameter.

Additionally the sys_utime function was changed to match compat_sys_utime
which already use do_utimes instead of duplicating the work.

Also, the completely missing futimensat() functionality is added.  We have
such a function in glibc but we have to resort to using /proc/self/fd/* which
not everybody likes (chroot etc).

Test application (the syscall number will need per-arch editing):

#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <sys/time.h>
#include <stddef.h>
#include <syscall.h>

#define __NR_utimensat 280

#define UTIME_NOW       ((1l << 30) - 1l)
#define UTIME_OMIT      ((1l << 30) - 2l)

int
main(void)
{
  int status = 0;

  int fd = open("ttt", O_RDWR|O_CREAT|O_EXCL, 0666);
  if (fd == -1)
    error (1, errno, "failed to create test file \"ttt\"");

  struct stat64 st1;
  if (fstat64 (fd, &st1) != 0)
    error (1, errno, "fstat failed");

  struct timespec t[2];
  t[0].tv_sec = 0;
  t[0].tv_nsec = 0;
  t[1].tv_sec = 0;
  t[1].tv_nsec = 0;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  struct stat64 st2;
  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
    {
      puts ("atim not reset to zero");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("mtim not reset to zero");
      status = 1;
    }
  if (status != 0)
    goto out;

  t[0] = st1.st_atim;
  t[1].tv_sec = 0;
  t[1].tv_nsec = UTIME_OMIT;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
      || st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
    {
      puts ("atim not set");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("mtim changed from zero");
      status = 1;
    }
  if (status != 0)
    goto out;

  t[0].tv_sec = 0;
  t[0].tv_nsec = UTIME_OMIT;
  t[1] = st1.st_mtim;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
      || st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
    {
      puts ("mtim changed from original time");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != st1.st_mtim.tv_sec
      || st2.st_mtim.tv_nsec != st1.st_mtim.tv_nsec)
    {
      puts ("mtim not set");
      status = 1;
    }
  if (status != 0)
    goto out;

  sleep (2);

  t[0].tv_sec = 0;
  t[0].tv_nsec = UTIME_NOW;
  t[1].tv_sec = 0;
  t[1].tv_nsec = UTIME_NOW;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  struct timeval tv;
  gettimeofday(&tv,NULL);

  if (st2.st_atim.tv_sec <= st1.st_atim.tv_sec
      || st2.st_atim.tv_sec > tv.tv_sec)
    {
      puts ("atim not set to NOW");
      status = 1;
    }
  if (st2.st_mtim.tv_sec <= st1.st_mtim.tv_sec
      || st2.st_mtim.tv_sec > tv.tv_sec)
    {
      puts ("mtim not set to NOW");
      status = 1;
    }

  if (symlink ("ttt", "tttsym") != 0)
    error (1, errno, "cannot create symlink");

  t[0].tv_sec = 0;
  t[0].tv_nsec = 0;
  t[1].tv_sec = 0;
  t[1].tv_nsec = 0;
  if (syscall(__NR_utimensat, AT_FDCWD, "tttsym", t, AT_SYMLINK_NOFOLLOW) != 0)
    error (1, errno, "utimensat failed");

  if (lstat64 ("tttsym", &st2) != 0)
    error (1, errno, "lstat failed");

  if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
    {
      puts ("symlink atim not reset to zero");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("symlink mtim not reset to zero");
      status = 1;
    }
  if (status != 0)
    goto out;

  t[0].tv_sec = 1;
  t[0].tv_nsec = 0;
  t[1].tv_sec = 1;
  t[1].tv_nsec = 0;
  if (syscall(__NR_utimensat, fd, NULL, t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != 1 || st2.st_atim.tv_nsec != 0)
    {
      puts ("atim not reset to one");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 1 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("mtim not reset to one");
      status = 1;
    }

  if (status == 0)
     puts ("all OK");

 out:
  close (fd);
  unlink ("ttt");
  unlink ("tttsym");

  return status;
}

[akpm@linux-foundation.org: add missing i386 syscall table entry]
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Cc: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:18 -07:00
Randy Dunlap
e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Christoph Hellwig
1eeb66a1bb move die notifier handling to common code
This patch moves the die notifier handling to common code.  Previous
various architectures had exactly the same code for it.  Note that the new
code is compiled unconditionally, this should be understood as an appel to
the other architecture maintainer to implement support for it aswell (aka
sprinkling a notify_die or two in the proper place)

arm had a notifiy_die that did something totally different, I renamed it to
arm_notify_die as part of the patch and made it static to the file it's
declared and used at.  avr32 used to pass slightly less information through
this interface and I brought it into line with the other architectures.

[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix vmalloc_sync_all bustage]
[bryan.wu@analog.com: fix vmalloc_sync_all in nommu]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:04 -07:00
Christoph Hellwig
ab1b6f03a1 simplify the stacktrace code
Simplify the stacktrace code:

 - remove the unused task argument to save_stack_trace, it's always
   current
 - remove the all_contexts flag, it's alwasy 0

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andi Kleen <ak@suse.de>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:14:58 -07:00
Linus Torvalds
ef93127e4c Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SERIAL] sunsu: Fix section mismatch warnings.
  [SPARC64]: pgtable_cache_init() should be __init.
  [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/prom.c
  [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/pci.c
  [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/console.c
  [MM]: sparse_init() should be __init.
  [SPARC64]: Update defconfig.
  [VIDEO]: Add Sun XVR-2500 framebuffer driver.
  [VIDEO]: Add Sun XVR-500 framebuffer driver.
  [SPARC64]: SUN4U PCI-E controller support.
  [SPARC]: Fix comment typo in smp4m_blackbox_current().
  [SCSI] SUNESP: sun_esp.c needs linux/delay.h

Fix up conflict in arch/sparc64/mm/init.c manually due to removal of
pgtable_cache_init() through the -mm patches (even though that patch was
also by David ;)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:22:48 -07:00
Benjamin Herrenschmidt
ac35ee484d get_unmapped_area handles MAP_FIXED on sparc64
Handle MAP_FIXED in hugetlb_get_unmapped_area on sparc64 by just using
prepare_hugepage_range()

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: William Irwin <bill.irwin@oracle.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:56 -07:00
Christoph Lameter
f0f3980b21 slab allocators: remove multiple alignment specifications
It is not necessary to tell the slab allocators to align to a cacheline
if an explicit alignment was already specified. It is rather confusing
to specify multiple alignments.

Make sure that the call sites only use one form of alignment.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:55 -07:00