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392 commits

Author SHA1 Message Date
Venkatesh Pallipadi
83d0515bbb [CPUFREQ][4/8] acpi-cpufreq: Mark speedstep-centrino ACPI as deprecated
Mark ACPI hooks in speedstep-centrino as deprecated. Change the order in which
speedstep-centrino and acpi-cpufreq (when both are in kernel) will be
added. First driver to be tried is now acpi-cpufreq, followed by
speedstep-centrino.

Add a note in feature-removal-schedule to mark this deprecation.

Signed-off-by: Denis Sadykov <denis.m.sadykov@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-15 19:57:10 -04:00
Venkatesh Pallipadi
dde9f7ba60 [CPUFREQ][3/8] acpi-cpufreq: Pull in MSR based transition support
Add in the support for Intel Enhanced Speedstep - MSR based transitions.
With this change, the ACPI based support in speedstep-centrino can be
deprecated and duplicate code in that driver can be marked for removal.
Much easier to maintain and support this way. This also reduces the
user misconfigurations and questions on which driver is to be used
under which CPUs to support Enhanced Speedstep.

Signed-off-by: Denis Sadykov <denis.m.sadykov@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-15 19:57:10 -04:00
Venkatesh Pallipadi
fe27cb3588 [CPUFREQ][2/8] acpi: reorganize code to make MSR support addition easier
Some clean up and redsign of the driver. Mainly making it easier to add
support for multiple sub-mechanisms of changing frequency. Currently this
driver supports only ACPI SYSTEM_IO address space. With the changes
below it is easier to add support for other address spaces like Intel
Enhanced Speedstep which uses MSR (ACPI FIXED_FEATURE_HARDWARE) to do the
transitions.

Signed-off-by: Denis Sadykov <denis.m.sadykov@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-15 19:57:10 -04:00
Venkatesh Pallipadi
519ce3ec76 [CPUFREQ][1/8] acpi-cpufreq: software coordination and handle all CPUs in the group
This patchset has refresh/rebase of a bunch of patches/bugfixes related to
acpi-cpufreq that were sent earlier on this list.

patch 1/8
 Patch that fixes a bug in swcoordination code in acpi-cpufreq

patch 2/8 through patch 7/8
 Grand unification of ACPI based speedstep-centrino and acpi-cpufreq drivers.

 ACPI allows P-state transitions in multiple ways. Like using IO ports or using
 processor native method (MSR). Without this patch, IO port based P-state
 transitions are handled in acpi-cpufreq driver and MSR based transitions on
 Intel CPUs are handled in speedstep-centrino driver. Even though most of the
 code in these two drivers should be similar, except for final changing/checking
 of frequency (one driver does it using IO port and other does it through
 MSR), we have duplicated code in these two drivers. There are also issues
 around BIOSes supporting both MSR and IO port and which driver should be
 loaded first in standard installations.

 The patchset combines functionality of these two driver into acpi-cpufreq
 driver. ACPI based functionality in speedstep-centrino is marked deprecated
 and will be removed in future. speedstep-centrino will continue to work
 on systems that depend on older non-ACPI table based P-state chanes.

 * 2/8 - Patch that reorganizes the code in acpi-cpufreq, cleaning it up
 a little and making it easier to add MSR support later.
 * 3/8 - Pull in the MSR based transition support into acpi-cpufreq.
 * 4/8 - Mark speedstep-centrino deprecated. Change the order in Makefile to
 load acpi-cpufreq first and speedstep-centrino later, in cases where both
 are configured in.
 * 5/8 - lindent acpi-cpufreq.c
 * 6/8 - Minor change to eliminate the check of current frequency on
 notifications. We can use last set frequency instead.
 * 7/8 - Make cpufreq->get of acpi_cpufreq work correctly again.

 There will be a patch in future that removes ACPI based support in
 speedstep-centrino in coming months.

patch 8/8
Add support for IA32_APERF and IA32_MPERF MSR and get the actual frequency
from these MSRs and use it to determine the next frequency target in ondemand
governor

This patch:
There is a bug in software coordination patch in acpi-cpufreq, due to which
frequency will only be set on first CPU of any coordinated group.
Bug identified by Denis, was not recognised earlier as there are no platforms
yet that use software coordination with acpi-cpufreq driver.

Signed-off-by: Denis Sadykov <denis.m.sadykov@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-15 19:57:10 -04:00
Stephen Hemminger
6569345abb [PATCH] thermal throttle: sysfs error checking
Get rid of warning in the thermal throttling code about not checking
sysfs return values.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-13 08:35:39 -07:00
Eric Sesterhenn
8d8f3cbe77 BUG_ON cleanups in arch/i386
This changes a couple of if() BUG(); constructs to
BUG_ON(); so it can be safely optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03 23:34:58 +02:00
Linus Torvalds
8ccb3dcd1f x86: Fix booting with "no387 nofxsr"
Jesper Juhl reported that testing the software math-emulation by forcing
"no387" doesn't work on modern CPU's.

The reason was two-fold:
 - you also need to pass in "nofxsr" to make sure that we not only don't
   touch the old i387 legacy hardware, it also needs to disable the
   modern XMM/FXSR sequences
 - "nofxsr" didn't actually clear the capability bits immediately,
   leaving the early boot sequence still using FXSR until we got to
   the identify_cpu() stage.

This fixes the "nofxsr" flag to take effect immediately on the boot CPU.

Debugging by Randy Dunlap

Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03 09:47:14 -07:00
Dave Jones
bfeeb0f579 [CPUFREQ] Make acpi-cpufreq unsticky again.
This caused suspend/resume regressions.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-30 23:19:38 -04:00
Rafa³ Bilski
eed7d41257 [CPUFREQ] longhaul: remove duplicated code.
removing duplicated code.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-27 17:03:36 -04:00
rafalbilski@interia.pl
7f1be89247 [CPUFREQ] Longhaul - Disable arbiter CLE266
Please ignore previous message.

This patch is adding support for CPU connected to CLE266
chipset. For older CPU this is only way. For "Powersaver"
processor this way will be used if ACPI C3 isn't supported.

I have tested it. It seems to work exacly like ACPI.
But it is less safe. On CLE266 chipset port 0x22 is
blocking processor access to PCI bus too.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-26 23:12:02 -04:00
Venkatesh Pallipadi
0497c8ca28 [CPUFREQ] Fix section mismatch warning
Make the sections proper and get rid of section mismatch warnings.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-26 23:02:45 -04:00
Linus Torvalds
b278240839 Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (225 commits)
  [PATCH] Don't set calgary iommu as default y
  [PATCH] i386/x86-64: New Intel feature flags
  [PATCH] x86: Add a cumulative thermal throttle event counter.
  [PATCH] i386: Make the jiffies compares use the 64bit safe macros.
  [PATCH] x86: Refactor thermal throttle processing
  [PATCH] Add 64bit jiffies compares (for use with get_jiffies_64)
  [PATCH] Fix unwinder warning in traps.c
  [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1
  [PATCH] x86: Move direct PCI scanning functions out of line
  [PATCH] i386/x86-64: Make all early PCI scans dependent on CONFIG_PCI
  [PATCH] Don't leak NT bit into next task
  [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder
  [PATCH] Fix some broken white space in ia32_signal.c
  [PATCH] Initialize argument registers for 32bit signal handlers.
  [PATCH] Remove all traces of signal number conversion
  [PATCH] Don't synchronize time reading on single core AMD systems
  [PATCH] Remove outdated comment in x86-64 mmconfig code
  [PATCH] Use string instructions for Core2 copy/clear
  [PATCH] x86: - restore i8259A eoi status on resume
  [PATCH] i386: Split multi-line printk in oops output.
  ...
2006-09-26 13:07:55 -07:00
Josh Triplett
182daa5567 [PATCH] mtrr: Add lock annotations for prepare_set and post_set
The functions prepare_set and post_set in kernel/cpu/mtrr/generic.c wrap
the spinlock set_atomicity_lock: prepare_set returns with the lock held,
and post_set releases the lock without acquiring it.  Add lock annotations
to these two functions so that sparse can check callers for lock pairing,
and so that sparse will not complain about these functions since they
intentionally use locks in this manner.

Signed-off-by: Josh Triplett <josh@freedesktop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:57 -07:00
Dave Jones
dcf10307c3 [PATCH] i386/x86-64: New Intel feature flags
Add supplemental SSE3 instructions flag, and Direct Cache Access flag.
As described in "Intel Processor idenfication and the CPUID instruction
AP485 Sept 2006"

AK: also added for x86-64

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:42 +02:00
Dmitriy Zavin
3222b36f46 [PATCH] x86: Add a cumulative thermal throttle event counter.
The counter is exported to /sys that keeps track of the
number of thermal events, such that the user knows how bad the
thermal problem might be (since the logging to syslog and mcelog
is rate limited).

AK: Fixed cpu hotplug locking

Signed-off-by: Dmitriy Zavin <dmitriyz@google.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:42 +02:00
Dmitriy Zavin
66aea9913c [PATCH] i386: Make the jiffies compares use the 64bit safe macros.
Signed-off-by: Dmitriy Zavin <dmitriyz@google.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:42 +02:00
Dmitriy Zavin
15d5f83983 [PATCH] x86: Refactor thermal throttle processing
Refactor the event processing (syslog messaging and rate limiting)
into separate file therm_throt.c. This allows consistent reporting
of CPU thermal throttle events.

After ACK'ing the interrupt, if the event is current, the user
(p4.c/mce_intel.c) calls therm_throt_process to log (and rate limit)
the event. If that function returns 1, the user has the option to log
things further (such as to mce_log in x86_64).

AK: minor cleanup

Signed-off-by: Dmitriy Zavin <dmitriyz@google.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:42 +02:00
Magnus Damm
e9dff0ee66 [PATCH] i386: mark cpu cache functions as __cpuinit
Mark i386-specific cpu cache functions as __cpuinit. They are all
only called from arch/i386/common.c:display_cache_info() that already is
marked as __cpuinit.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:36 +02:00
Magnus Damm
5f0f1c1666 [PATCH] i386: mark cpu identify functions as __cpuinit
Mark i386-specific cpu identification functions as __cpuinit. They are all
only called from arch/i386/common.c:identify_cpu() that already is marked as
__cpuinit.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:36 +02:00
Magnus Damm
b4af3f7cf1 [PATCH] i386: mark cpu init functions as __cpuinit, data as __cpuinitdata
Mark i386-specific cpu init functions as __cpuinit. They are all
only called from arch/i386/common.c:identify_cpu() that already is marked as
__cpuinit. This patch also removes the empty function init_umc().

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:36 +02:00
Magnus Damm
9541493054 [PATCH] i386: mark cpu_dev structures as __cpuinitdata
The different cpu_dev structures are all used from __cpuinit callers what
I can tell. So mark them as __cpuinitdata instead of __initdata. I am a
little bit unsure about arch/i386/common.c:default_cpu, especially when it
comes to the purpose of this_cpu.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:36 +02:00
Magnus Damm
68bbc172cd [PATCH] i386: remove redundant generic_identify() calls when identifying cpus
cpu_dev->c_identify is only called from arch/i386/common.c:identify_cpu(), and
this after generic_identify() already has been called. There is no need to call
this function twice and hook it in c_identify - but I may be wrong, please
double check before applying.

This patch also removes generic_identify() from cpu.h to avoid unnecessary
future nesting.

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:36 +02:00
Jeremy Fitzhardinge
5758d5dfef [PATCH] i386: fix dubious segment register clear in cpu_init()
Fix a very dubious piece of code in
arch/i386/kernel/cpu/common.c:cpu_init().  This clears out %fs and
%gs, but clobbers %eax in the process without telling gcc.  It turns
out that gcc happens to be not using %eax at that point anyway so it
doesn't matter much, but it looks like a bomb waiting to go off.

This does end up saving an instruction, because gcc wants %eax==0 for
the set_debugreg()s below.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:34 +02:00
Jeremy Fitzhardinge
24669f7d00 [CPUFREQ] sw_any_bug_dmi_table can be used on resume, so it isn't initdata
sw_any_bug_dmi_table can be used on resume, so it isn't initdata.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-22 19:18:19 -04:00
Venkatesh Pallipadi
8adcc0c674 [CPUFREQ] Workaround for BIOS bug in software coordination of frequency
Some buggy BIOSes do a "software any" kind of coordination without telling
about it to OS. So, when OS sets frequency on one CPU on these platforms,
it will also impact all the other logical CPUs that are in the same power
domain. Attached patch is a workaround for those buggy BIOSes.
Patch should be a noop on the normal non-buggy platforms.

Applies over previously sent acpi-cpufreq and software coordination
bug fix patch

Signed-off-by: Denis Sadykov <denis.m.sadykov@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-05 17:28:42 -04:00
Rafa³ Bilski
db44aaf3a2 [CPUFREQ] Longhaul - Add voltage scaling to driver
Rename option "dont_scale_voltage" to "scale_voltage" because
don't will be default.
Use "pos" for calculating voltage. In this way driver don't need
to know mV value or low level value. Simply min U is one pos and
max U is second pos. All pos between these two are used.
Assume that min U is for min f and max U for max f. For frequency
between min and max calculate pos based on difference between
current frequency and min f.
Values in mobile VRM table changed to values from
C3-M datasheet.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-05 17:28:42 -04:00
Dave Jones
23e735bc7b Merge ../linus 2006-09-05 17:16:33 -04:00
Dave Jones
a0cc621f52 [PATCH] cpufreq: acpi-cpufreq: Ignore failure from acpi_cpufreq_early_init_acpi
Ignore the return value of early_init_acpi(), as it can give false error
messages.  If there is something really wrong, then register_driver will
fail cleanly with EINVAL later.

[ background: modprobe acpi-cpufreq on systems not capable of speed-scaling
  started failing with 'invalid argument', where previously it would only
  ever -ENODEV

  I'm not 100% happy with the solution. It'd be better to handle
  failure properly, but this is a low-impact change for 2.6.18
  We can always revisit doing this better in .19   --davej.]

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-27 11:01:29 -07:00
Rafa³ Bilski
6595413fc9 [CPUFREQ] Longhaul - Add ignore_latency option
Some laptops with VIA C3 processor, CLE266 chipset and
AMI BIOS have incorrect latency values in FADT table. These
laptops seems to be C3 capable, but latency values are to
big: 101 for C2 and 1017 for C3. This option will allow
user to skip C3 latency test but not C3 address test. AMI
BIOS is setting C3 address to correct value in DSDT table.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-08-14 01:18:53 -04:00
Rafa³ Bilski
179da8e6e8 [CPUFREQ] Longhaul - Disable arbiter
ACPI C3 works for "Powersaver" processors, so use it only for them.

Older CPU will change frequency on "halt" only. But we can protect transition
in two ways:
- by ACPI PM2 register, there is "bus master arbiter disable" bit.
  This isn't tested because VIA mainboards don't have PM2 register,
- by PLE133 PCI/AGP arbiter disable register.
  There are two bits in this register. First is "PCI arbiter disable",
  second "AGP arbiter disable". This is working on VIA Epia 800 mainboards.

Test on bm_control is more proper because this is true
when PM2 register exist.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-08-11 17:59:57 -04:00
bert hubert
12e704db80 [CPUFREQ] Propagate acpi_processor_preregister_performance return value.
Note how any error from acpi_processor_preregister_performance is ignored.

From: bert hubert <bert.hubert@netherlabs.nl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:06 -04:00
Rafa³ Bilski
32deb2d5c4 [CPUFREQ] Longhaul - Rename & fix multipliers table
This table is only used by Ezra-T CPUs currently, and has values
for some other CPU. Fix them to match the values used by that CPU,
and for now make it clearer by renaming the variable.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:06 -04:00
Rafa³ Bilski
9fb31c3a1d [CPUFREQ] Longhaul - Fix power state test to do something more useful
This is changing "always true" test to something usefull.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:06 -04:00
Rafa³ Bilski
eb23c751d8 [CPUFREQ] Longhaul - Readd accidentally dropped line
I lost very important line in do_powersaver

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:05 -04:00
Adrian Bunk
c4a96c1eba [CPUFREQ] Make longhaul_walk_callback() static
This patch makes the needlessly global longhaul_walk_callback() static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:05 -04:00
Adrian Bunk
95a53249db [CPUFREQ] X86_GX_SUSPMOD must depend on PCI
It seems commit 32ee8c3e47 accidentially
reverted cdc9cc1d74, IOW, it reintroduced
the following compile error with CONFIG_PCI=n:

<--  snip  -->

...
  CC      arch/i386/kernel/cpu/cpufreq/gx-suspmod.o
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c: In function ‘gx_detect_chipset’:
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c:193: error: implicit declaration of function ‘pci_match_id’
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c:193: warning: comparison between pointer and integer
make[3]: *** [arch/i386/kernel/cpu/cpufreq/gx-suspmod.o] Error 1

<--  snip  -->

This patch therefore re-adds the dependency of X86_GX_SUSPMOD on PCI.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:05 -04:00
Rafa³ Bilski
0d6daba5fa [CPUFREQ] Longhaul - Initialise later.
Without this longhaul will always fail when compiled into kernel,
as it needs to initialise after the ACPI processor module.

I lost this when I was splitting patches. Sorry.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:05 -04:00
Rafa³ Bilski
48b7bde0f6 [CPUFREQ] Longhaul - Workaround issues with APIC.
There is no need to worry about local APIC.
There is need to worry about I/O APIC, because I/O APIC
is replacing good old 8259. According to Nehemiah datasheet VIA is
using 3-wire bus to connect local APIC to I/O APIC.

"[...] When IA32_APIC_BASE[11] is set to 0, processor APICs based on the 3-wire APIC
 bus cannot be generally re-enabled until a system hardware reset. The 3-wire bus
 looses track of arbitration that would be necessary for complete re-enabling. Certain
 (local) APIC functionality can be enabled. [...]"

So we must set disable bit for each interrupt in I/O APIC registers.
Same situation as for PIC - we must poke registers direcly.
How to do this? I don't know. So at the moment it is better to fail.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:05 -04:00
Rafa³ Bilski
dadb49d874 [CPUFREQ] Longhaul - Hook into ACPI C states.
Minimal change necessary for hardware support.

Changes in longhaul.c:
- most important - now C3 state is causing transition,
- code responsible for clearing "bus master" bit removed,
- protect bcr2 transition in the same way as longhaul.

Signed-off-by: Rafa³ Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-07-31 18:37:05 -04:00
Chandra Seetharaman
be6b5a3505 [PATCH] cpu hotplug: use hotplug version of registration in late inits
Use hotplug version of register_cpu_notifier in late init functions.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-31 13:28:39 -07:00
Andrew Morton
a5ca63cb60 [PATCH] mce section fix
mce_disabled cannot be __initdata - we access it during APM resume.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-31 13:28:37 -07:00
Linus Torvalds
22a3e233ca Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:
  Remove obsolete #include <linux/config.h>
  remove obsolete swsusp_encrypt
  arch/arm26/Kconfig typos
  Documentation/IPMI typos
  Kconfig: Typos in net/sched/Kconfig
  v9fs: do not include linux/version.h
  Documentation/DocBook/mtdnand.tmpl: typo fixes
  typo fixes: specfic -> specific
  typo fixes in Documentation/networking/pktgen.txt
  typo fixes: occuring -> occurring
  typo fixes: infomation -> information
  typo fixes: disadvantadge -> disadvantage
  typo fixes: aquire -> acquire
  typo fixes: mecanism -> mechanism
  typo fixes: bandwith -> bandwidth
  fix a typo in the RTC_CLASS help text
  smb is no longer maintained

Manually merged trivial conflict in arch/um/kernel/vmlinux.lds.S
2006-06-30 15:39:30 -07:00
Jörn Engel
6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Len Brown
d120cfb544 merge linus into release branch
Conflicts:

	drivers/acpi/acpi_memhotplug.c
2006-06-29 19:57:46 -04:00
Chandra Seetharaman
74b85f3790 [PATCH] cpu hotplug: make cpu_notifier related notifier blocks __cpuinit only
Make notifier_blocks associated with cpu_notifier as __cpuinitdata.

__cpuinitdata makes sure that the data is init time only unless
CONFIG_HOTPLUG_CPU is defined.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:41 -07:00
Chandra Seetharaman
9c7b216d23 [PATCH] cpu hotplug: revert init patch submitted for 2.6.17
In 2.6.17, there was a problem with cpu_notifiers and XFS.  I provided a
band-aid solution to solve that problem.  In the process, i undid all the
changes you both were making to ensure that these notifiers were available
only at init time (unless CONFIG_HOTPLUG_CPU is defined).

We deferred the real fix to 2.6.18.  Here is a set of patches that fixes the
XFS problem cleanly and makes the cpu notifiers available only at init time
(unless CONFIG_HOTPLUG_CPU is defined).

If CONFIG_HOTPLUG_CPU is defined then cpu notifiers are available at run
time.

This patch reverts the notifier_call changes made in 2.6.17

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:40 -07:00
James Bottomley
96c5274903 [PATCH] fix subarchitecture breakage with CONFIG_SCHED_SMT
Commit 1e9f28fa1e ("[PATCH] sched: new
sched domain for representing multi-core") incorrectly made SCHED_SMT
and some of the structures it uses dependent on SMP.

However, this is wrong, the structures are only defined if X86_HT, so
SCHED_SMT has to depend on that as well.

The patch broke voyager, since it doesn't provide any of the multi-core
or hyperthreading structures.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:38 -07:00
Rohit Seth
4b89aff930 [PATCH] i386: move phys_proc_id and cpu_core_id to cpuinfo_x86
Move the phys_core_id and cpu_core_id to cpuinfo_x86 structure.  Similar
patch for x86_64 is already accepted by Andi earlier this week.

[akpm@osdl.org: fix warning]
Signed-off-by: Rohit Seth <rohitseth@google.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:37 -07:00
Andreas Mohr
7f35bf929f [PATCH] x86: constify some parts of arch/i386/kernel/cpu/
Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:37 -07:00
Shaohua Li
bd9e0b74f5 [PATCH] x86: cpu_init(): avoid GFP_KERNEL allocation while atomic
The patch fixes two issues:

1.  cpu_init is called with interrupt disabled.  Allocating gdt table
   there isn't good at runtime.

2. gdt table page cause memory leak in CPU hotplug case.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:37 -07:00
Thomas Renninger
d7fa2589bb Pull bugzilla-5737 into release branch 2006-06-27 00:06:37 -04:00
Linus Torvalds
da206c9e68 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:
  typo fixes
  Clean up 'inline is not at beginning' warnings for usb storage
  Storage class should be first
  i386: Trivial typo fixes
  ixj: make ixj_set_tone_off() static
  spelling fixes
  fix paniced->panicked typos
  Spelling fixes for Documentation/atomic_ops.txt
  move acknowledgment for Mark Adler to CREDITS
  remove the bouncing email address of David Campbell
2006-06-26 13:33:14 -07:00
Venkatesh Pallipadi
0080e66755 [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs
Intel now has support for Architectural Performance Monitoring Counters
( Refer to IA-32 Intel Architecture Software Developer's Manual
http://www.intel.com/design/pentium4/manuals/253669.htm ). This
feature is present starting from Intel Core Duo and Intel Core Solo processors.

What this means is, the performance monitoring counters and some performance
monitoring events are now defined in an architectural way (using cpuid).
And there will be no need to check for family/model etc for these architectural
events.

Below is the patch to use this performance counters in nmi watchdog driver.
Patch handles both i386 and x86-64 kernels.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 10:48:22 -07:00
Andi Kleen
240cd6a806 [PATCH] i386/x86-64: Emulate CPUID4 on AMD
Intel systems report the cache level data from CPUID 4 in sysfs.
Add a CPUID 4 emulation for AMD CPUs to report the same
information for them. This allows programs to read this
information in a uniform way.

The AMD way to report this is less flexible so some assumptions
are hardcoded (e.g. no L3)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 10:48:14 -07:00
Andi Kleen
faee9a5dc9 [PATCH] i386/x86-64: Use new official CPUID to get APICID/core split on AMD platforms
Previously the apicid<->coreid split was computed based on the max
number of cores. Now use a new CPUID AMD defined for that. On most
systems right now it should be 0 and the old method will be used.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 10:48:14 -07:00
Andreas Mohr
d6e05edc59 spelling fixes
acquired (aquired)
contiguous (contigious)
successful (succesful, succesfull)
surprise (suprise)
whether (weather)
some other misspellings

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-26 18:35:02 +02:00
Venkatesh Pallipadi
46f18e3a28 ACPI: HW P-state coordination support
Treat HW coordination as independent CPUs.
This enables per-cpu monintoring of P-states

http://bugzilla.kernel.org/show_bug.cgi?id=5737

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-26 00:34:43 -04:00
Andrew Morton
fb1bb34d45 [PATCH] remove for_each_cpu()
Convert a few stragglers over to for_each_possible_cpu(), remove
for_each_cpu().

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 10:00:54 -07:00
Linus Torvalds
37224470c8 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (65 commits)
  ACPI: suppress power button event on S3 resume
  ACPI: resolve merge conflict between sem2mutex and processor_perflib.c
  ACPI: use for_each_possible_cpu() instead of for_each_cpu()
  ACPI: delete newly added debugging macros in processor_perflib.c
  ACPI: UP build fix for bugzilla-5737
  Enable P-state software coordination via _PDC
  P-state software coordination for speedstep-centrino
  P-state software coordination for acpi-cpufreq
  P-state software coordination for ACPI core
  ACPI: create acpi_thermal_resume()
  ACPI: create acpi_fan_suspend()/acpi_fan_resume()
  ACPI: pass pm_message_t from acpi_device_suspend() to root_suspend()
  ACPI: create acpi_device_suspend()/acpi_device_resume()
  ACPI: replace spin_lock_irq with mutex for ec poll mode
  ACPI: Allow a WAN module enable/disable on a Thinkpad X60.
  sem2mutex: acpi, acpi_link_lock
  ACPI: delete unused acpi_bus_drivers_lock
  sem2mutex: drivers/acpi/processor_perflib.c
  ACPI add ia64 exports to build acpi_memhotplug as a module
  ACPI: asus_acpi_init(): propagate correct return value
  ...

Manual resolve of conflicts in:

	arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
	arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
	include/acpi/processor.h
2006-06-23 07:52:36 -07:00
Michal Ludvig
224f611c16 [PATCH] x86: VIA C7 CPU flags
New CPU flags for next generation of crypto engine as found in VIA C7
processors.

Signed-off-by: Michal Ludvig <michal@logix.cz>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 07:42:59 -07:00
Andreas Mohr
cefc01130b [PATCH] x86: cyrix code CONFIG_PCI fix / add __initdata
PCI code was outside of CONFIG_PCI, add __initdata at cyrix_55x0 (since
accessed within __init function only).

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 07:42:57 -07:00
Alexey Dobriyan
a03a3e287b [PATCH] Don't trigger full rebuild via CONFIG_X86_MCE
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 07:42:56 -07:00
Alexey Dobriyan
27b07da733 [PATCH] Don't trigger full rebuild via CONFIG_MTRR
Only drm, framebuffer, mtrr parts + misc files here and there.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 07:42:56 -07:00
Randy Dunlap
9ed059e155 [CPUFREQ] Fix powernow-k8 SMP kernel on UP hardware bug.
Fix powernow-k8 doesn't load bug.
Reference: https://launchpad.net/distros/ubuntu/+source/linux-source-2.6.15/+bug/35145

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-21 17:34:25 -04:00
Jeremy Fitzhardinge
491b07c98f [PATCH] redirect speedstep-centrino maintainer mail to cpufreq list
I haven't really maintained this driver for a while, and I'm not
keeping up with the latest in Intel power management.  I get a steady
stream of mail which I don't really do anything useful with; the
cpufreq list seems like a better destination, unless someone wants to
get the mail directly.

Also clean up a couple of ancient comments which don't really apply
anymore (as far as I know, nobody has ever damaged a CPU with this
driver).

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-21 17:34:25 -04:00
Langsdorf, Mark
6cad647da2 [CPUFREQ] correct powernow-k8 fid/vid masks for extended parts
The fid/vid masks for parts using the extended parts are slightly incorrect and can result in
incorrect fid/vid codes being applied.  No instances of this problem have been reported in
the field but it could be a problem with future parts.

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-20 01:46:04 -04:00
Langsdorf, Mark
e7bdd7a531 [CPUFREQ] Clarify powernow-k8 cpu_family statements
This patch clarifies the meaning of the cpu_family if
statements in the hw pstate driver patch for powernow-k8

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-20 01:46:04 -04:00
Len Brown
d42510a0f5 Pull bugzilla-5737 into release branch
Conflicts:

	arch/x86_64/kernel/acpi/processor.c
2006-06-15 21:39:25 -04:00
Dave Jones
6ccf58ab22 [CPUFREQ] sets nforce2 minimum PLL divider to 2.
Sets minimum PLL divider to 2.
No negative impact when tested with two nForce2 based boards.

Alexander Choporov reported (06/01/06) that xdiv = 1 does not work on his
Abit NF7S2. Although there shouldn't be much cases that lead to xdiv = 1.

(Updates also the (C) year)

Signed-off-by: Sebastian Witt <se.witt@gmx.net>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-05 15:25:20 -04:00
Dave Jones
436fe7b8b4 [CPUFREQ] Make powernow-k7 work on SMP kernels.
Even though powernow-k7 doesn't work in SMP environments,
it can work on an SMP configured kernel if there's only
one CPU present, however recalibrate_cpu_khz was returning
-EINVAL on such kernels, so we failed to init the cpufreq driver.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-05 14:03:50 -04:00
Jan Beulich
8c362a5d62 [CPUFREQ] dprintk adjustments to cpufreq-speedstep-centrino
Remove KERN_* suffixes from some Centrino cpufreq driver's dprintk-s.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-04 19:47:38 -04:00
Jan Beulich
0fc25dd17e [CPUFREQ] dprintk adjustments to cpufreq-nforce2
Remove KERN_* suffixes from some NForce2 cpufreq driver's dprintk-s.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-04 19:47:38 -04:00
Dave Jones
1f729e0660 [CPUFREQ] Prepare powernow-k8 for future CPUs.
Forthcoming AMD products will use a different algorithm for transitioning
pstates than the current generation Opteron products do.  The attached
patch allows the powernow-k8 driver to work with those products.

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-04 19:37:58 -04:00
Dave Jones
911cb74bb9 [CPUFREQ] Make acpi-cpufreq 'sticky'.
This prevents annoying messages being printed when it gets
loaded on a machine that doesn't have support scaling via ACPI.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-06-01 11:38:28 -04:00
Dave Jones
75de7d55f8 [CPUFREQ] Remove strange No-op from longrun.c
ORing something with zero is meaningless.

ACKed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-31 16:13:14 -04:00
Dave Jones
851777b7b6 [CPUFREQ] Remove duplicate assignment from cpufreq-nforce2
Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:55:01 -04:00
Dave Jones
b6571da9f3 [CPUFREQ] Remove pointless reinitialisations in acpi-cpufreq
Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:50:22 -04:00
Dave Jones
83844510ec [CPUFREQ] Remove pointless reinitialisation from powernow-k8
This var is already set at entry to the function.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:43:54 -04:00
Dave Jones
8eebf1a4c3 [CPUFREQ] Remove redundant initialisation from longhaul.
Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:40:16 -04:00
Dave Jones
e2aa8732ac [CPUFREQ] Clean up longhaul's speed pretty-printer
Getting ready to move to core cpufreq.
- Use snprintf
- Remove unnecessary nesting improving readability.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:37:15 -04:00
Dave Jones
8cbe016905 [CPUFREQ] Disambiguate loop indexes in powernow-k7
This shouldn't have actually caused any problems
(as we return if we 'corrupt' 'i', but it's still not
very pretty.  For the sake of adding another local variable,
this got cleaner.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:26:08 -04:00
Dave Jones
2e3f8faaa7 [CPUFREQ] Typo in powernow-k8
(Also fix some horked indentation)

Signed-off-by: Dave Jones <davej@redhat.com>
2006-05-30 17:25:14 -04:00
Chandra Seetharaman
83d722f7e1 [PATCH] Remove __devinit and __cpuinit from notifier_call definitions
Few of the notifier_chain_register() callers use __init in the definition
of notifier_call.  It is incorrect as the function definition should be
available after the initializations (they do not unregister them during
initializations).

This patch fixes all such usages to _not_ have the notifier_call __init
section.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-26 08:30:03 -07:00
Andi Kleen
18bd057b14 [PATCH] i386/x86-64: Fix x87 information leak between processes
AMD K7/K8 CPUs only save/restore the FOP/FIP/FDP x87 registers in FXSAVE
when an exception is pending.  This means the value leak through
context switches and allow processes to observe some x87 instruction
state of other processes.

This was actually documented by AMD, but nobody recognized it as
being different from Intel before.

The fix first adds an optimization: instead of unconditionally
calling FNCLEX after each FXSAVE test if ES is pending and skip
it when not needed. Then do a x87 load from a kernel variable to
clear FOP/FIP/FDP.

This means other processes always will only see a constant value
defined by the kernel in their FP state.

I took some pain to make sure to chose a variable that's already
in L1 during context switch to make the overhead of this low.

Also alternative() is used to patch away the new code on CPUs
who don't need it.

Patch for both i386/x86-64.

The problem was discovered originally by Jan Beulich. Richard
Brunner provided the basic code for the workarounds, with contribution
from Jan.

This is CVE-2006-1056

Cc: richard.brunner@amd.com
Cc: jbeulich@novell.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-20 07:58:11 -07:00
Adrian Bunk
9180053cac [CPUFREQ] powernow-k8.c: fix a check-after-use
This patch fixes a check-after-use introduced by commit
4211a30349 and spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-04-18 17:24:52 -05:00
Tobias Klauser
3aee086bd3 [CPUFREQ] Remove duplicate check in powernow-k8
Remove a duplicate NULL pointer check introduced by commit
4211a30349

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-04-18 17:24:52 -05:00
Andi Kleen
3d8a4d795c [PATCH] i386: Remove bogus special case code from AMD core parsing
It's not actually needed and would break non power of two number
of cores.

Follows similar earlier x86-64 patch.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-11 06:38:57 -07:00
Jacob Shin
4211a30349 [PATCH] x86_64: Proper null pointer check in powernow_k8_get
This prevents crashes on dual core system when enough ticks are lost.

Replaces earlier patch by me.

Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-09 11:53:51 -07:00
Andi Kleen
d7fa706ce2 [PATCH] x86_64: Revert earlier powernow-k8 change
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-09 11:53:51 -07:00
Andrew Morton
7e1f19e503 ACPI: UP build fix for bugzilla-5737
cpu_online_map doesn't exist if !CONFIG_SMP.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-01 21:13:15 -05:00
OGAWA Hirofumi
9b41046cd0 [PATCH] Don't pass boot parameters to argv_init[]
The boot cmdline is parsed in parse_early_param() and
parse_args(,unknown_bootoption).

And __setup() is used in obsolete_checksetup().

	start_kernel()
		-> parse_args()
			-> unknown_bootoption()
				-> obsolete_checksetup()

If __setup()'s callback (->setup_func()) returns 1 in
obsolete_checksetup(), obsolete_checksetup() thinks a parameter was
handled.

If ->setup_func() returns 0, obsolete_checksetup() tries other
->setup_func().  If all ->setup_func() that matched a parameter returns 0,
a parameter is seted to argv_init[].

Then, when runing /sbin/init or init=app, argv_init[] is passed to the app.
If the app doesn't ignore those arguments, it will warning and exit.

This patch fixes a wrong usage of it, however fixes obvious one only.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-31 12:18:53 -08:00
Andrew Morton
64840e2722 [CPUFREQ] powernow: remove private for_each_cpu_mask()
It is unneeded and wrong.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-27 15:06:08 -05:00
shin, jacob
eef5167e50 [CPUFREQ] hotplug cpu fix for powernow-k8
Andi's previous fix to initialise powernow_data on all siblings
will not work properly with CPU Hotplug.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-27 15:01:28 -05:00
Shaohua Li
b06be912a3 [PATCH] x86: don't use cpuid.2 to determine cache info if cpuid.4 is supported
Don't use cpuid.2 to determine cache info if cpuid.4 is supported.  The
exception is P4 trace cache.  We always use cpuid.2 to get trace cache
under P4.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:44 -08:00
Siddha, Suresh B
1e9f28fa1e [PATCH] sched: new sched domain for representing multi-core
Add a new sched domain for representing multi-core with shared caches
between cores.  Consider a dual package system, each package containing two
cores and with last level cache shared between cores with in a package.  If
there are two runnable processes, with this appended patch those two
processes will be scheduled on different packages.

On such systems, with this patch we have observed 8% perf improvement with
specJBB(2 warehouse) benchmark and 35% improvement with CFP2000 rate(with 2
users).

This new domain will come into play only on multi-core systems with shared
caches.  On other systems, this sched domain will be removed by domain
degeneration code.  This new domain can be also used for implementing power
savings policy (see OLS 2005 CMP kernel scheduler paper for more details..
I will post another patch for power savings policy soon)

Most of the arch/* file changes are for cpu_coregroup_map() implementation.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:43 -08:00
Ingo Molnar
14cc3e2b63 [PATCH] sem2mutex: misc static one-file mutexes
Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jens Axboe <axboe@suse.de>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Cc: Greg KH <greg@kroah.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 08:56:55 -08:00
Andi Kleen
ad90573f93 [PATCH] x86_64: Initialize powernow_data[] for all siblings
I got an oops on a dual core system because the lost tick handler
called cpufreq_get() on core 1 and powernow tried to follow
a NULL powernow_data[] pointer there.

Initialize powernow_data for all cores of a CPU.

Cc: Jacob Shin <jacob.shin@amd.com>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:14:39 -08:00
Andi Kleen
9d95dd849c [PATCH] i386/x86-64: List Intel LaGrange AKA SMX in /proc/cpuinfo
Spec just got published so we know the CPUID bit.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 09:10:57 -08:00
Linus Torvalds
be9bf30c73 Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] kzalloc conversion for gx-suspmod
  [CPUFREQ] Whitespace cleanup
  [CPUFREQ] Mark longhaul driver as broken.
  [PATCH] cpufreq: fix section mismatch warnings
  [CPUFREQ] Fix the p4-clockmod N60 errata workaround.
  [CPUFREQ] Fix handling for CPU hotplug
  [CPUFREQ] powernow-k8: Let cpufreq driver handle affected CPUs
  [CPUFREQ] Lots of whitespace & CodingStyle cleanup.
  [CPUFREQ] Remove duplicate cpuinfo struct
  [CPUFREQ] Silence powernow-k8 warning on k7's.
2006-03-25 08:52:23 -08:00
Andrew Morton
f081a529f8 [PATCH] cpufreq: speedstep-smi asm fix
Fix bug identified by Linus Torvalds <torvalds@osdl.org>: the `out'
instruction depends upon the state of memory_data[], so we need to tell gcc
that before executing it. (The opcode, not gcc).

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=5553

Thanks to Antonio Ospite <ospite@studenti.unina.it> for testing.

Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 08:42:45 -08:00
Andrew Morton
a720115678 [PATCH] more-for_each_cpu-conversions fix
I screwed up this conversion - we should be iterating across online CPUs, not
possible ones.

Spotted by Joe Perches <joe@perches.com>

Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:15 -08:00
Andrew Morton
394e3902c5 [PATCH] more for_each_cpu() conversions
When we stop allocating percpu memory for not-possible CPUs we must not touch
the percpu data for not-possible CPUs at all.  The correct way of doing this
is to test cpu_possible() or to use for_each_cpu().

This patch is a kernel-wide sweep of all instances of NR_CPUS.  I found very
few instances of this bug, if any.  But the patch converts lots of open-coded
test to use the preferred helper macros.

Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Christian Zankel <chris@zankel.net>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: Nathan Scott <nathans@sgi.com>
Cc: Jens Axboe <axboe@suse.de>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:17 -08:00
Shaohua Li
f2d0d263b5 [PATCH] x86: cpuid.4 doesn't need cpu level 5
Detecting cache line using cpuid.4, cpuid level 4 is enough.

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:06 -08:00
Jesper Juhl
52f4a91afd [PATCH] Fix the imlicit declaration of mtrr_centaur_report_mcr in arch/i386/kernel/cpu/centaur.c
arch/i386/kernel/cpu/centaur.c: In function `centaur_mcr_insert':
arch/i386/kernel/cpu/centaur.c:33: warning: implicit declaration of function `mtrr_centaur_report_mcr'

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:06 -08:00
Chuck Ebbert
54a20f8c5d [PATCH] i386: fall back to sensible CPU model name
When vendor-specific i386 initialization code is unavailable the kernel
falls back to a default CPU model name.  Make that model name reflect the
CPU family instead of an internal vendor index.

Tested on Pentium II (family 6 model 5).

/proc/cpuinfo before:
        model name     : ff/05

after:
        model name     : 06/05

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Acked-by: "Seth, Rohit" <rohit.seth@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:04 -08:00
Chuck Ebbert
4f88651125 [PATCH] i386: allow disabling X86_FEATURE_SEP at boot
Allow the x86 "sep" feature to be disabled at bootup.  This forces use of the
int80 vsyscall.  Mainly for testing or benchmarking the int80 vsyscall code.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:04 -08:00
Chuck Ebbert
3bc9b76bed [PATCH] i386: __devinit should be __cpuinit
Several places in arch/i386/kernel/cpu and kernel/cpu were using __devinit
when they should have been __cpuinit.  Fixing that saves ~4K when
CONFIG_HOTPLUG && !CONFIG_HOTPLUG_CPU.

Noticed by Andrew Morton.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:04 -08:00
Gerd Hoffmann
9a0b5817ad [PATCH] x86: SMP alternatives
Implement SMP alternatives, i.e.  switching at runtime between different
code versions for UP and SMP.  The code can patch both SMP->UP and UP->SMP.
The UP->SMP case is useful for CPU hotplug.

With CONFIG_CPU_HOTPLUG enabled the code switches to UP at boot time and
when the number of CPUs goes down to 1, and switches to SMP when the number
of CPUs goes up to 2.

Without CONFIG_CPU_HOTPLUG or on non-SMP-capable systems the code is
patched once at boot time (if needed) and the tables are released
afterwards.

The changes in detail:

  * The current alternatives bits are moved to a separate file,
    the SMP alternatives code is added there.

  * The patch adds some new elf sections to the kernel:
    .smp_altinstructions
	like .altinstructions, also contains a list
	of alt_instr structs.
    .smp_altinstr_replacement
	like .altinstr_replacement, but also has some space to
	save original instruction before replaving it.
    .smp_locks
	list of pointers to lock prefixes which can be nop'ed
	out on UP.
    The first two are used to replace more complex instruction
    sequences such as spinlocks and semaphores.  It would be possible
    to deal with the lock prefixes with that as well, but by handling
    them as special case the table sizes become much smaller.

 * The sections are page-aligned and padded up to page size, so they
   can be free if they are not needed.

 * Splitted the code to release init pages to a separate function and
   use it to release the elf sections if they are unused.

Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:04 -08:00
Dave Jones
84f0b1ef8c [CPUFREQ] kzalloc conversion for gx-suspmod
Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-11 16:13:56 -05:00
Dave Jones
388d6c5180 [CPUFREQ] Whitespace cleanup
Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-11 16:04:53 -05:00
Dave Jones
5e8fb97163 [CPUFREQ] Mark longhaul driver as broken.
This seems to work for a short period of time, but when
used in conjunction with a userspace governor that changes
the frequency regularly, it's only a matter of time before
everything just locks up.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-11 16:03:16 -05:00
Pallipadi, Venkatesh
6d373ea012 [CPUFREQ] Fix the p4-clockmod N60 errata workaround.
Fix the code to disable freqs less than 2GHz in N60 errata.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-10 00:45:35 -05:00
Shaohua Li
ed2da193fe [PATCH] x86: cpu model calculation for family 6 cpu
The x86_model calculation also applies for family 6. early_cpu_detect
does the right thing, but generic_identify misses.

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-08 14:14:01 -08:00
Dave Jones
2a1c1c877e [CPUFREQ] powernow-k8: Let cpufreq driver handle affected CPUs
powernow-k8: Let cpufreq driver handle affected CPUs

Let the cpufreq driver manage AMD Dual-Core CPUs being tied together.

Since cpufreq driver's affected CPUs data, cpufreq_policy->cpus, already
knows about which cores are tied together, powernow driver does not have
keep its internal data for every core.  (even a pointer.. it will never
be called on)  Telling cpufreq driver about cpu_core_map at init time is
sufficient.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-03-05 03:35:00 -05:00
Dave Jones
32ee8c3e47 [CPUFREQ] Lots of whitespace & CodingStyle cleanup.
Signed-off-by: Dave Jones <davej@redhat.com>
2006-02-28 00:43:23 -05:00
Dave Jones
8ad5496d23 [CPUFREQ] Remove duplicate cpuinfo struct
We already have one of these declared, so use it, instead
of declaring a second one for no good reason.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-02-28 00:37:44 -05:00
Dave Jones
2c906ae67b [CPUFREQ] Silence powernow-k8 warning on k7's.
Signed-off-by: Dave Jones <davej@redhat.com>
2006-02-28 00:36:32 -05:00
James Bottomley
2b932f6cf0 [PATCH] x86: fix broken SMP boot sequence
Recent GDT changes broke the SMP boot sequence if the booting CPU is
numbered anything other than zero.  There's also a subtle source of error
in that the boot time CPU now uses cpu_gdt_table (which is actually the GDT
for booting CPUs in head.S).  This patch fixes both problems by making GDT
descriptors themselves allocated from a per_cpu area and switching to them
in cpu_init(), which now means that cpu_gdt_table is exclusively used for
booting CPUs again.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Matt Tolentino <metolent@snoqualmie.dp.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-24 14:31:38 -08:00
Andi Kleen
a62eaf151d [PATCH] x86_64: Add boot option to disable randomized mappings and cleanup
AMD SimNow!'s JIT doesn't like them at all in the guest. For distribution
installation it's easiest if it's a boot time option.

Also I moved the variable to a more appropiate place and make
it independent from sysctl

And marked __read_mostly which it is.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-17 08:00:40 -08:00
Venkatesh Pallipadi
c52851b60c P-state software coordination for speedstep-centrino
http://bugzilla.kernel.org/show_bug.cgi?id=5737

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-02-09 03:21:49 -05:00
Venkatesh Pallipadi
09b4d1ee88 P-state software coordination for acpi-cpufreq
http://bugzilla.kernel.org/show_bug.cgi?id=5737

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-02-09 03:21:49 -05:00
Chuck Ebbert
fe38d8553c [PATCH] i386 cpu hotplug: don't access freed memory
i386 CPU init code accesses freed init memory when booting a newly-started
processor after CPU hotplug.  The cpu_devs array is searched to find the
vendor and it contains pointers to freed data.

Fix that by:

        1. Zeroing entries for freed vendor data after bootup.
        2. Changing Transmeta, NSC and UMC to all __init[data].
        3. Printing a warning (once only) and setting this_cpu
           to a safe default when the vendor is not found.

This does not change behavior for AMD systems.  They were broken already
but no error was reported.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05 11:06:53 -08:00
Linus Torvalds
59ed2f59e4 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2006-02-01 22:06:15 -08:00
Linus Torvalds
b8c475be7b Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/x86 2006-01-31 16:21:44 -08:00
Dave Jones
6fe8f479d0 [X86] Add new Intel cache descriptors.
From http://www.intel.com/design/xeon/applnots/24161830.pdf

16MB of 16-way assoc 64 byte per cacheline L3 cache anyone? Yum.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-01-26 22:40:40 -08:00
Ben Collins
c70ca00f77 [CPUFREQ] p4-clockmod: Workaround for CPU's with N60 errata
Ignore clock frequencies below 2Ghz for CPU's detected with N60 errata bug.

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-01-26 10:44:11 -08:00
Len Brown
9fdb62af92 [ACPI] merge 3549 4320 4485 4588 4980 5483 5651 acpica asus fops pnpacpi branches into release
Signed-off-by: Len Brown <len.brown@intel.com>
2006-01-24 17:52:48 -05:00
Adrian Bunk
cdc9cc1d74 [CPUFREQ] X86_GX_SUSPMOD must depend on PCI
This patch fixes the following compile error:

...
  CC      arch/i386/kernel/cpu/cpufreq/gx-suspmod.o
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c: In function 'gx_detect_chipset':
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c:193: error: implicit declaration of function 'pci_match_id'
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c:193: warning: comparison between pointer and integer
make[3]: *** [arch/i386/kernel/cpu/cpufreq/gx-suspmod.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-01-19 16:44:27 -08:00
Andi Kleen
aa41eb9915 [PATCH] x86_64: Mark powernow k8 init functions as __cpuinit
cpufreq init can be called when a CPU is set online.
Need to make powernow-k8's initialisation functions __cpuinit to
prevents oopses when a CPU is off/onlined on a AMD system

Cc: trenn@suse.de
Cc: mark.langsdorf@amd.com
Cc: davej@redhat.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 11:27:58 -08:00
Andi Kleen
2e664aa2ba [PATCH] i386: Move phys_proc_id/early intel workaround to correct function.
early_cpu_detect only runs on the BP, but this code needs to run
on all CPUs.

Looks like a mismerge somewhere.  Also add a warning comment.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 19:05:02 -08:00
Andi Kleen
3f98bc4991 [PATCH] i386/x86-64: Update AMD CPUID flags
Print bits for RDTSCP, SVM, CR8-LEGACY.

Also now print power flags on i386 like x86-64 always did.
This will add a new line in the 386 cpuinfo, but that shouldn't
be an issue - did that in the past too and I haven't heard
of any breakage.

I shrunk some of the fields in the i386 cpuinfo_x86 to chars
to make up for the new int "x86_power" field. Overall it's
smaller than before.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 19:01:12 -08:00
Andi Kleen
152bf8c55d [PATCH] x86_64: Use X86_FEATURE_CONSTANT_TSC now to clean up Intel speedstep drivers
They previously tried to figure this out on their own.

Suggested by Venkatesh.

Cc: venkatesh.pallipadi@intel.com
Cc: davej@redhat.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 19:01:12 -08:00
Andi Kleen
39b3a79105 [PATCH] i386/x86-64: Generalize X86_FEATURE_CONSTANT_TSC flag
Define it for i386 too.

This is a synthetic flag that signifies that the CPU's TSC runs
at a constant P state invariant frequency.

Fix up the logic on x86-64/i386 to set it on all known CPUs.
Use the AMD defined bit to set it on future AMD CPUs.

Cc: venkatesh.pallipadi@intel.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 19:01:12 -08:00
Randy Dunlap
a941564458 [PATCH] capable/capability.h (arch/)
arch: Use <linux/capability.h> where capable() is used.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 18:42:14 -08:00
Adrian Bunk
c28ab5d23a remove the outdated arch/i386/kernel/cpu/{,mtrr/}changelog
This patch removes two outdated changelog files.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-01-10 00:15:25 +01:00
Matt Mackall
22c4e3084e [PATCH] tiny: Make x86 doublefault handling optional
This adds configurable support for doublefault reporting on x86

add/remove: 0/3 grow/shrink: 0/1 up/down: 0/-13048 (-13048)
function                                     old     new   delta
cpu_init                                     846     786     -60
doublefault_fn                               188       -    -188
doublefault_stack                           4096       -   -4096
doublefault_tss                             8704       -   -8704

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:14:11 -08:00
Benoit Boissinot
35f652b5ef [ACPI] fix acpi_cpufreq.c build warrning
Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-01-07 04:52:41 -05:00
Jordan Crouse
f90b811603 [PATCH] Base support for AMD Geode GX/LX processors
Provide basic support for the AMD Geode GX and LX processors.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:38 -08:00
Zachary Amsden
2891dcdc45 [PATCH] x86: Stop deleting nt
Stop deleting NT bit from EFLAGS.  See arch/i386/kernel/head.S line 223, which
does something even better.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:35 -08:00
Zachary Amsden
7c4cb60e5b [PATCH] x86: GDT alignment fix
Make GDT page aligned and page padded to support running inside of a
hypervisor.  This prevents false sharing of the GDT page with other hot
data, which is not allowed in Xen, and causes performance problems in
VMware.

Rather than go back to the old method of statically allocating the GDT
(which wastes unneded space for non-present CPUs), the GDT for APs is
allocated dynamically.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:33 -08:00
Dave Jones
2f27f81758 [X86] Remove pointless versioning of mtrr driver.
It's not like this has changed significantly, and probably never will.
Reduce some bootup dmesg noise.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-01-05 19:31:51 -08:00
Dave Jones
c32017a43d [X86] Rename MTRR mutex to something more sensible.
I spotted 'main_lock' whilst grovelling through a vmlinux with objdump.
Even if it is static, it's a horrible name.

Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-20 14:46:07 -08:00
Dave Jones
f8a363b83f [X86] Remove Winchip 4 ID.
This CPU never made it into production.  It went on to
become the basis for the VIA Samuel.

Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-20 12:13:30 -08:00
Venkatesh Pallipadi
95235ca2c2 [CPUFREQ] CPU frequency display in /proc/cpuinfo
What is the value shown in "cpu MHz" of /proc/cpuinfo when CPUs are capable of
changing frequency?

Today the answer is: It depends.
On i386:
SMP kernel - It is always the boot frequency
UP kernel - Scales with the frequency change and shows that was last set.

On x86_64:
There is one single variable cpu_khz that gets written by all the CPUs. So,
the frequency set by last CPU will be seen on /proc/cpuinfo of all the
CPUs in the system. What you see also depends on whether you have constant_tsc
capable CPU or not.

On ia64:
It is always boot time frequency of a particular CPU that gets displayed.

The patch below changes this to:
Show the last known frequency of the particular CPU, when cpufreq is present. If
cpu doesnot support changing of frequency through cpufreq, then boot frequency
will be shown. The patch affects i386, x86_64 and ia64 architectures.

Signed-off-by: Venkatesh Pallipadi<venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-06 19:35:11 -08:00
Mattia Dongili
9a7d82a89a [CPUFREQ] Move PMBASE reading away and do it only once at initialization time
This patch moves away PMBASE reading and only performs it at
cpufreq_register_driver time by exiting with -ENODEV if unable to read
the value.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-06 19:27:15 -08:00
Mattia Dongili
1a10760c91 [CPUFREQ] Measure transition latency at driver initialization
The attached patch introduces runtime latency measurement for ICH[234]
based chipsets instead of using CPUFREQ_ETERNAL. It includes
some sanity checks in case the measured value is out of range and
assigns a safe value of 500uSec that should still be enough on
problematics chipsets (current testing report values ~200uSec). The
measurement is currently done in speedstep_get_freqs in order to avoid
further unnecessary transitions and in the hope it'll come handy for SMI
also.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>

 speedstep-ich.c |    4 ++--
 speedstep-lib.c |   32 +++++++++++++++++++++++++++++++-
 speedstep-lib.h |    1 +
 speedstep-smi.c |    1 +
 4 files changed, 35 insertions(+), 3 deletions(-)
2005-12-06 19:27:15 -08:00
Dave Jones
cc6e8de8f0 [CPUFREQ] Change loglevels on powernow-k8 bios error printk's.
If a user has booted with 'quiet', some important messages don't
get displayed which really should. We've seen at least one case
where powernow-k8 stopped working, and the user needed a BIOS update
that they didn't know about.

Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-06 15:03:55 -08:00
Gabriel A. Devenyi
d4921914de [PATCH] cpufreq-nforce2.c fix u32<0 test
Thanks to LinuxICC (http://linuxicc.sf.net), a comparison of a u32 less
than 0 was found, this patch changes the variable to a signed int so that
comparison is meaningful.

Signed-off-by: Gabriel A. Devenyi <ace@staticwave.ca>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-01 01:23:24 -08:00
Venkatesh Pallipadi
05131ecc99 [ACPI] Avoid BIOS inflicted crashes by evaluating _PDC only once
Linux invokes the AML _PDC method (Processor Driver Capabilities)
to tell the BIOS what features it can handle.  While the ACPI
spec says nothing about the OS invoking _PDC multiple times,
doing so with changing bits seems to hopelessly confuse the BIOS
on multiple platforms up to and including crashing the system.

Factor out the _PDC invocation so Linux invokes it only once.

http://bugzilla.kernel.org/show_bug.cgi?id=5483

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-12-01 01:30:35 -05:00
Dave Jones
6df8900676 [CPUFREQ] Fix indentation in powernow-k8
Signed-off-by: Dave Jones <davej@redhat.com>
2005-11-30 13:33:30 -08:00
Langsdorf, Mark
019a61b993 [PATCH] Support 100 MHz frequency transitions
Future versions of the Opteron processor may support
frequency transitions of 100 MHz, instead of the=20
current 200 MHz.  This patch enables the powernow-k8
driver to transition to an odd FID code, indicating
a multiple of 100 MHz frequency.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-11-29 12:46:07 -08:00
Jacob Shin
8aae8284fe [CPUFREQ] Improve Error reporting in powernow-k8
This patch cleans up some error messages in the
powernow-k8 driver and makes them more understandable.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-11-21 07:23:08 -08:00
Linus Torvalds
4060994c3e Merge x86-64 update from Andi 2005-11-14 19:56:02 -08:00
Siddha, Suresh B
2b0918758d [PATCH] x86_64: x86_64/i386 fix Intel cache detection code assumption about threads sharing
Fix the Intel cache detection code assumption that number of threads
sharing the cache will either be equal to number of HT or core siblings.

This also cleans up the code in general a bit.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14 19:55:16 -08:00
Siddha, Suresh B
94605eff57 [PATCH] x86-64/i386: Intel HT, Multi core detection fixes
Fields obtained through cpuid vector 0x1(ebx[16:23]) and
vector 0x4(eax[14:25], eax[26:31]) indicate the maximum values and might not
always be the same as what is available and what OS sees.  So make sure
"siblings" and "cpu cores" values in /proc/cpuinfo reflect the values as seen
by OS instead of what cpuid instruction says. This will also fix the buggy BIOS
cases (for example where cpuid on a single core cpu says there are "2" siblings,
even when HT is disabled in the BIOS.
http://bugzilla.kernel.org/show_bug.cgi?id=4359)

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14 19:55:16 -08:00
Shaohua Li
af9c142de9 [PATCH] x86_64: Force correct address space size for MTRR on some 64bit Intel Xeons
They report 40bit, but only have 36bits of physical address space.
This caused problems with setting up the correct masks for MTRR.

CPUID workaround for steppings 0F33h(supporting x86) and 0F34h(supporting x86
and EM64T). Detail info can be found at:
http://download.intel.com/design/Xeon/specupdt/30240216.pdf
http://download.intel.com/design/Pentium4/specupdt/30235221.pdf

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14 19:55:16 -08:00
Suresh Siddha
f5f786d045 [PATCH] x86-64/i386: Fix CPU model for family 6
According to cpuid instruction in IA32 SDM-Vol2, when computing cpu model,
we need to consider extended model ID for family 0x6 also.

AK: Also added fixes/simplifcation from Petr Vandrovec

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14 19:55:14 -08:00
Nick Piggin
53e86b91b7 [PATCH] i386: generic cmpxchg
- Make cmpxchg generally available on the i386 platform.

- Provide emulation of cmpxchg suitable for uniprocessor if built and run on
  386.

From: Christoph Lameter <clameter@sgi.com>

- Cut down patch and small style changes.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-13 18:14:15 -08:00
Linus Torvalds
dad2ad82c5 Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2005-11-07 13:28:20 -08:00
Shaohua Li
31ab269a03 [PATCH] x86: add MCE resume
It's widely seen a MCE non-fatal error reported after resume.  It seems MCE
resume is lacked under ia32.  This patch tries to fix the gap.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:30 -08:00
Tobias Klauser
38e548ee1a [PATCH] arch/i386: Use ARRAY_SIZE macro
Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0])

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:28 -08:00
Tim Schmielau
4e57b68178 [PATCH] fix missing includes
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
Ashok Raj
1aa1a9f98f [PATCH] create and destroy cache sysfs entries based on cpu notifiers
cpu cache entries should be populated only when cpu is online and removed
when they are logically offlined.

Without which entries are not removed when cpu is offlined, or dont appear
when we boot with maxcpus=1 and then kick the rest of the cpus via echo 1
to the sysfs online file.

- Changed __devinit to __cpuinit for consistency.
- Changed sysfs_driver_register to register_cpu_notifier.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Zwane Mwaikambo <zwane@holomorphy.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:14 -08:00
Brian Gerst
c531178157 [PATCH] Clean up mtrr compat ioctl code
Handle 32-bit mtrr ioctls in the mtrr driver instead of the ia32
compatability layer.

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:13 -08:00
Kamble, Nitin A
daedb82d6b [PATCH] x86: vmx cpu feature detection
If VMX feature is available in the CPU, this patch will make it visible in
the /proc/cpuinfo with the cpuid detection.

Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:13 -08:00
Venkatesh Pallipadi
30037f66ce [PATCH] x86: when L3 is present show its size in /proc/cpuinfo
The code that prints the cache size assumes that L3 always lives in chipset
and is shared across CPUs.  Which is not really true.

I think all the cachesizes reported by cpuid are in the processor itself.
The attached patch changes the code to reflect that.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:12 -08:00
Venkatesh Pallipadi
434440a280 [PATCH] x86: bug fix in P6 Machine check initialization
Make P6 MCA initialization code complaint with guidelines in IA-32 SDM
Vol3.  Bank 0 control register should not be set by OS and clear status
registers on all banks on reset.

This will prevent false MCE alarms on the systems that has some non-MCE
information left-over in MC0_STATUS on reboot.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:12 -08:00
Zachary Amsden
251e6912df [PATCH] x86: add an accessor function for getting the per-CPU gdt
Add an accessor function for getting the per-CPU gdt.  Callee must already
have the CPU.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:12 -08:00
Zachary Amsden
72e12b76fe [PATCH] x86: bogus tls from gdt
The per-CPU initialization code is copying in bogus data into
thread->tls_array.  Note that it copies &per_cpu(cpu_gdt_table, cpu), not
&per_cpu(cpu_gdt_table, cpu)[GDT_ENTRY_TLS_MIN).  That is totally broken
and unnecessary.  Make the initialization explicitly NULL.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:12 -08:00
Siddha, Suresh B
d16aafff25 [PATCH] intel_cacheinfo: remove MAX_CACHE_LEAVES limit
Initial internal version of Venki's cpuid(4) deterministic cache parameter
identification patch used static arrays of size MAX_CACHE_LEAVES.  Final patch
which made to the base used dynamic array allocation, with this
MAX_CACHE_LEAVES limit hunk still in place.

cpuid(4) already has a mechanism to find out the number of cache levels
implemented and there is no need for this hardcoded MAX_CACHE_LEAVES limit.

So remove the MAX_CACHE_LEAVES limit from the routine which calculates the
number of cache levels using cpuid(4)

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:11 -08:00
Chris Wright
63172cb3d5 [PATCH] typo fix in last cpufreq powernow patch
Not sure how it slipped by, but here's a trivial typo fix for powernow.

Signed-off-by: Chris Wright <chrisw@osdl.org>
[ It's "nurter" backwards.. Maybe we have a hillbilly The Shining fan? ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-21 17:08:30 -07:00
Dave Jones
0213df7431 [PATCH] cpufreq: fix pending powernow timer stuck condition
AMD recently discovered that on some hardware, there is a race condition
possible when a C-state change request goes onto the bus at the same
time as a P-state change request.

Both requests happen, but the southbridge hardware only acknowledges the
C-state change.  The PowerNow! driver is then stuck in a loop, waiting
for the P-state change acknowledgement.  The driver eventually times
out, but can no longer perform P-state changes.

It turns out the solution is to resend the P-state change, which the
southbridge will acknowledge normally.

Thanks to Johannes Winkelmann for reporting this and testing the fix.

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-21 14:28:58 -07:00
Dave Jones
bfdc708dc7 [CPUFREQ] kzalloc conversions for i386 drivers.
Signed-off-by: Dave Jones <davej@redhat.com>
2005-10-20 15:16:15 -07:00
Andi Kleen
3c92c2ba33 [PATCH] i386: Don't discard upper 32bits of HWCR on K8
Need to use long long, not long when RMWing a MSR. I think
it's harmless right now, but still should be better fixed
if AMD adds any bits in the upper 32bit of HWCR.

Bug was introduced with the TLB flush filter fix for i386

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-10 16:34:09 -07:00
Andi Kleen
7d318d7747 [PATCH] Fix up TLB flush filter disabling
I checked with AMD and they requested to only disable it for family 15.
Also disable it for i386 too. And some style fixes.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-29 15:41:42 -07:00
Al Viro
ce3a161e69 [PATCH] useless includes of linux/irq.h in arch/i386
Most of these guys are simply not needed (pulled by other stuff
via asm-i386/hardirq.h).  One that is not entirely useless is hilarious -
arch/i386/oprofile/nmi_timer_int.c includes linux/irq.h... as a way to
get linux/errno.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-26 18:29:50 -07:00
Dave Jones
b9111b7b7f [CPUFREQ] Remove preempt_disable from powernow-k8
Via reading the code, my understanding is that powernow-k8 uses
preempt_disable to ensure that driver->target doesn't migrate across cpus
whilst it's accessing per processor registers, however set_cpus_allowed
will provide this for us.  Additionally, remove schedule() calls from
set_cpus_allowed as set_cpus_allowed ensures that you're executing on the
target processor on return.

Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-09-23 11:10:42 -07:00
Adrian Bunk
672289e9fa [PATCH] i386/x86_64: make get_cpu_vendor() static
get_cpu_vendor() no longer has any users in other files.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-10 10:06:35 -07:00
Linus Torvalds
529980c8b0 Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2005-09-08 17:24:34 -07:00
Len Brown
64e47488c9 Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
Pavel Machek
829ca9a30a [PATCH] swsusp: fix remaining u32 vs. pm_message_t confusion
Fix remaining bits of u32 vs.  pm_message confusion.  Should not break
anything.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:15 -07:00
Zachary Amsden
f2ab446124 [PATCH] x86: more asm cleanups
Some more assembler cleanups I noticed along the way.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:12 -07:00
Zachary Amsden
4d37e7e3fd [PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management
i386 inline assembler cleanup.

This change encapsulates descriptor and task register management.  Also,
it is possible to improve assembler generation in two cases; savesegment
may store the value in a register instead of a memory location, which
allows GCC to optimize stack variables into registers, and MOV MEM, SEG
is always a 16-bit write to memory, making the casting in math-emu
unnecessary.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:11 -07:00
Zachary Amsden
4bb0d3ec3e [PATCH] i386: inline asm cleanup
i386 Inline asm cleanup.  Use cr/dr accessor functions.

Also, a potential bugfix.  Also, some CR accessors really should be volatile.
Reads from CR0 (numeric state may change in an exception handler), writes to
CR4 (flipping CR4.TSD) and reads from CR2 (page fault) prevent instruction
re-ordering.  I did not add memory clobber to CR3 / CR4 / CR0 updates, as it
was not there to begin with, and in no case should kernel memory be clobbered,
except when doing a TLB flush, which already has memory clobber.

I noticed that page invalidation does not have a memory clobber.  I can't find
a bug as a result, but there is definitely a potential for a bug here:

#define __flush_tlb_single(addr) \
	__asm__ __volatile__("invlpg %0": :"m" (*(char *) addr))

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:11 -07:00
Venkatesh Pallipadi
252943efcf [PATCH] x86: Add the check for all the cores in a package in cache information
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:10 -07:00
Dave Jones
52c18fd2dc [CPUFREQ] Remove trailing whitespace before \n's in printks.
From: Denis Vlasenko <vda@ilport.com.ua>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-09-01 11:01:02 -07:00
Mika Kukkonen
ce38b51edf [CPUFREQ] Remove extra arg from dprintk in cpufreq/speedstep-smi.c
Minor fallout from my upcoming __attribute__((format(printf,x,y)))
patches. The variable 'result' is untouched, so this patch just removes
it.

Signed-off-by: Mika Kukkonen <mikukkon@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-08-31 22:21:29 -07:00
Mika Kukkonen
123411f2d0 [CPUFREQ] dprintf format fixes in cpufreq/speedstep-centrino.c
Ho-hum, did not notice there was more printf fixes for cpufreq (you
should see the amount I have for isdn and reiser ...). Sorry for noise.

Signed-off-by: Mika Kukkonen <mikukkon@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-08-31 22:21:29 -07:00
Venkatesh Pallipadi
f914be79ab [CPUFREQ] speedstep-centrino: skip extract_clock logic for acpi based centrino
speedstep_centrino.c:extract_clock() assumes the bus speed of 100MHz, which is
not true with latest laptops. Due to this assumption and due to the encoded
frequency check during initialization, speedstep-centrino driver fails even
on systems that has proper ACPI information to do the P-state transition.

The change below moves the centrino-speedstep detection to be used only
when table based P-state transition is done. For ACPI based P-state
transition, we skip the centrino_cpu identification, and as a result we
don't use the bus speed assumption in extract_clock. This change makes
speedstep-centrino work on Pentium-M based systems, which have more than 100MHz
bus speed.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-08-31 22:21:29 -07:00
Venkatesh Pallipadi
d395bf12d1 [ACPI] Reduce acpi-cpufreq switching latency by 50%
The acpi-cpufreq driver does a P-state get after a P-state set
to verify whether set went through successfully. This test
is kind of redundant as set goes throught most of the times,
and the test is also expensive as a get of P-states can
take a lot of time (same as a set operation) as it goes
through SMM mode. Effectively, we are doubling the P-state
latency due to this get opertion.

momdule parameter "acpi_pstate_strict" restores orginal paranoia.

http://bugzilla.kernel.org/show_bug.cgi?id=5129

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-08-26 22:22:33 -04:00
Andrew Morton
39bbb07d7c [PATCH] transmeta: CONFIG_PROC_FS=n build fix
Fix bug found by Grant Coady <lkml@dodo.com.au>'s autobuild setup.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-01 21:38:00 -07:00
Eric Lammerts
cdf32eaa4e [PATCH] disable addres space randomization default on transmeta CPUs
We know that the randomisation slows down some workloads on Transmeta CPUs
by quite large amounts.  We think it's because the CPU needs to recode the
same x86 instructions when they pop up at a different virtual address after
a fork+exec.

So disable randomization by default on those CPUs.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-01 19:13:59 -07:00
Len Brown
adbedd3424 merge 2.6.13-rc4 with ACPI's to-linus tree 2005-07-30 01:55:32 -04:00
Len Brown
d6ac1a7910 /home/lenb/src/to-linus branch 'acpi-2.6.12' 2005-07-29 23:31:17 -04:00
Dominik Brodowski
4b31e77455 [ACPI] Always set P-state on initialization
Otherwise a platform that supports ACPI based cpufreq
and boots up at lowest possible speed could stay there
forever.  This because the governor may request max speed,
but the code doesn't update if there is no change in
speed, and it assumed the initial state of max speed.

http://bugzilla.kernel.org/show_bug.cgi?id=4634

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-29 18:29:47 -04:00
Linus Torvalds
590f47a1d9 Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2005-07-29 14:40:08 -07:00
Dave Jones
094ce7fde4 arch/i386/kernel/cpu/cpufreq/powernow-k8.c: In function `powernow_k8_cpu_init_acpi':
arch/i386/kernel/cpu/cpufreq/powernow-k8.c:740: warning: unused variable `vid'
arch/i386/kernel/cpu/cpufreq/powernow-k8.c:739: warning: unused variable `fid'
arch/i386/kernel/cpu/cpufreq/powernow-k8.c:743: warning: unused variable `vid'
arch/i386/kernel/cpu/cpufreq/powernow-k8.c:742: warning: unused variable `fid'
arch/i386/kernel/cpu/cpufreq/powernow-k8.c:746: `fid' undeclared (first use in this function)
arch/i386/kernel/cpu/cpufreq/powernow-k8.c:746: `vid' undeclared (first use in this function)

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-07-29 12:55:40 -07:00
Dave Jones
2bcad935a3 Fix up powernow-k8 compile. (Missing definitions).
From: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-07-29 09:56:41 -07:00
Linus Torvalds
33ac02aa4c Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2005-07-29 10:16:25 -07:00
Andi Kleen
e2cac78935 [PATCH] x86_64: When running cpuid4 need to run on the correct CPU
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-28 21:46:01 -07:00