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15 years agox86: memtest: add additional (regular) test patterns
Andreas Herrmann [Wed, 25 Feb 2009 10:31:49 +0000 (11:31 +0100)]
x86: memtest: add additional (regular) test patterns

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: update description for memtest boot parameter
Andreas Herrmann [Wed, 25 Feb 2009 10:30:45 +0000 (11:30 +0100)]
x86: update description for memtest boot parameter

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: memtest: wipe out test pattern from memory
Andreas Herrmann [Wed, 25 Feb 2009 10:30:04 +0000 (11:30 +0100)]
x86: memtest: wipe out test pattern from memory

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: memtest: adapt log messages
Andreas Herrmann [Wed, 25 Feb 2009 10:28:58 +0000 (11:28 +0100)]
x86: memtest: adapt log messages

- print test pattern instead of pattern number,
- show pattern as stored in memory,
- use proper priority flags,
- consistent use of u64 throughout the code

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: memtest: cleanup memtest function
Andreas Herrmann [Wed, 25 Feb 2009 10:28:07 +0000 (11:28 +0100)]
x86: memtest: cleanup memtest function

Impact: code cleanup

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: memtest: introduce array to select memtest patterns
Andreas Herrmann [Wed, 25 Feb 2009 10:27:27 +0000 (11:27 +0100)]
x86: memtest: introduce array to select memtest patterns

Impact: code cleanup

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: memtest: reuse test patterns when memtest parameter exceeds number of available...
Andreas Herrmann [Wed, 25 Feb 2009 10:26:18 +0000 (11:26 +0100)]
x86: memtest: reuse test patterns when memtest parameter exceeds number of available patterns

Impact: fix unexpected behaviour when pattern number is out of range

Current implementation provides 4 patterns for memtest. The code doesn't
check whether the memtest parameter value exceeds the maximum pattern number.

Instead the memtest code pretends to test with non-existing patterns, e.g.
when booting with memtest=10 I've observed the following

  ...
  early_memtest: pattern num 10
  0000001000 - 0000006000 pattern 0
  ...
  0000001000 - 0000006000 pattern 1
  ...
  0000001000 - 0000006000 pattern 2
  ...
  0000001000 - 0000006000 pattern 3
  ...
  0000001000 - 0000006000 pattern 4
  ...
  0000001000 - 0000006000 pattern 5
  ...
  0000001000 - 0000006000 pattern 6
  ...
  0000001000 - 0000006000 pattern 7
  ...
  0000001000 - 0000006000 pattern 8
  ...
  0000001000 - 0000006000 pattern 9
  ...

But in fact Linux didn't test anything for patterns > 4 as the default
case in memtest() is to leave the function.

I suggest to use the memtest parameter as the number of tests to be
performed and to re-iterate over all existing patterns.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branches 'x86/acpi', 'x86/apic', 'x86/asm', 'x86/cleanups', 'x86/mm', 'x86...
Ingo Molnar [Tue, 24 Feb 2009 20:50:43 +0000 (21:50 +0100)]
Merge branches 'x86/acpi', 'x86/apic', 'x86/asm', 'x86/cleanups', 'x86/mm', 'x86/signal' and 'x86/urgent'; commit 'v2.6.29-rc6' into x86/core

15 years agox86: efi_stub_32,64 - add missing ENDPROCs
Cyrill Gorcunov [Mon, 23 Feb 2009 19:57:02 +0000 (22:57 +0300)]
x86: efi_stub_32,64 - add missing ENDPROCs

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: heukelum@fastmail.fm
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: head_64.S - use GLOBAL macro
Cyrill Gorcunov [Mon, 23 Feb 2009 19:57:01 +0000 (22:57 +0300)]
x86: head_64.S - use GLOBAL macro

Impact: cleanup

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: heukelum@fastmail.fm
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: entry_64.S - add missing ENDPROC
Cyrill Gorcunov [Mon, 23 Feb 2009 19:57:00 +0000 (22:57 +0300)]
x86: entry_64.S - add missing ENDPROC

native_usergs_sysret64 is described as

extern void native_usergs_sysret64(void)

so lets add ENDPROC here

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: heukelum@fastmail.fm
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: invalid_vm86_irq -- use predefined macros
Cyrill Gorcunov [Mon, 23 Feb 2009 19:56:59 +0000 (22:56 +0300)]
x86: invalid_vm86_irq -- use predefined macros

Impact: cleanup

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: heukelum@fastmail.fm
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: head_64.S - use IDT_ENTRIES instead of hardcoded number
Cyrill Gorcunov [Mon, 23 Feb 2009 19:56:58 +0000 (22:56 +0300)]
x86: head_64.S - use IDT_ENTRIES instead of hardcoded number

Impact: cleanup

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: heukelum@fastmail.fm
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: head_64.S - remove useless balign
Cyrill Gorcunov [Mon, 23 Feb 2009 19:56:57 +0000 (22:56 +0300)]
x86: head_64.S - remove useless balign

Impact: cleanup

NEXT_PAGE already has 'balign' so no
need to keep this redundant one.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: heukelum@fastmail.fm
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: fix performance regression in write() syscall
Salman Qazi [Tue, 24 Feb 2009 02:03:04 +0000 (18:03 -0800)]
x86: fix performance regression in write() syscall

While the introduction of __copy_from_user_nocache (see commit:
0812a579c92fefa57506821fa08e90f47cb6dbdd) may have been an improvement
for sufficiently large writes, there is evidence to show that it is
deterimental for small writes.  Unixbench's fstime test gives the
following results for 256 byte writes with MAX_BLOCK of 2000:

    2.6.29-rc6 ( 5 samples, each in KB/sec ):
    283750, 295200, 294500, 293000, 293300

    2.6.29-rc6 + this patch (5 samples, each in KB/sec):
    313050, 3106750, 293350, 306300, 307900

    2.6.18
    395700, 342000, 399100, 366050, 359850

    See w_test() in src/fstime.c in unixbench version 4.1.0.  Basically, the above test
    consists of counting how much we can write in this manner:

    alarm(10);
    while (!sigalarm) {
            for (f_blocks = 0; f_blocks < 2000; ++f_blocks) {
                   write(f, buf, 256);
            }
            lseek(f, 0L, 0);
    }

Note, there are other components to the write syscall regression
that are not addressed here.

Signed-off-by: Salman Qazi <sqazi@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86, doc: fix references to Documentation/x86/i386/boot.txt
Kyle McMartin [Thu, 19 Feb 2009 21:48:14 +0000 (16:48 -0500)]
x86, doc: fix references to Documentation/x86/i386/boot.txt

Impact: Documentation fix

The amazing dancing boot.txt file has jumped places again.  It should
never have been in Documentation/x86/i386, since it never was
32-bit-specific, but it unfortunately ended up there for a while.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
15 years agox86: minor cleanup in the espfix code
Stas Sergeev [Mon, 23 Feb 2009 16:13:07 +0000 (19:13 +0300)]
x86: minor cleanup in the espfix code

Impact: Cleanup

Checkin be44d2aabce2d62f72d5751d1871b6212bf7a1c7 eliminates the use of
a 16-bit stack for espfix.  However, at least one instruction remained
that only operated on the low 16 bits of %esp.

This is not a bug per se because the kernel stack is always an aligned
4K or 8K block.  Therefore it cannot cross 64K boundaries; this code,
in fact, relies strictly on that fact.

However, it's a lot cleaner (and, for that matter, smaller) to operate
on the entire 32-bit register.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
CC: Zachary Amsden <zach@vmware.com>
CC: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
15 years agox86: check mptable physptr with max_low_pfn on 32bit
Yinghai Lu [Mon, 23 Feb 2009 06:14:56 +0000 (22:14 -0800)]
x86: check mptable physptr with max_low_pfn on 32bit

Impact: fix early crash on LinuxBIOS systems

Kevin O'Connor reported that Coreboot aka LinuxBIOS tries to put
mptable somewhere very high, well above max_low_pfn (below which
BIOSes generally put the mptable), causing a panic.

The BIOS will probably be changed to be compatible with older
Linus versions, but nevertheless the MP-spec does not forbid
an MP-table in arbitrary system RAM, so make sure it all
works even if the table is in an unexpected place.

Check physptr with max_low_pfn * PAGE_SIZE.

Reported-by: Kevin O'Connor <kevin@koconnor.net>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Stefan Reinauer <stepan@coresystems.de>
Cc: coreboot@coreboot.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoLinux 2.6.29-rc6
Linus Torvalds [Mon, 23 Feb 2009 04:19:40 +0000 (20:19 -0800)]
Linux 2.6.29-rc6

15 years agoacpi/doc: add missing param value
Randy Dunlap [Mon, 23 Feb 2009 01:05:22 +0000 (17:05 -0800)]
acpi/doc: add missing param value

Add missing parameter value to list of available values
for acpi=<value>.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Mon, 23 Feb 2009 00:26:09 +0000 (16:26 -0800)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Add missing mutex_lock(&dev->struct_mutex)
  drm/i915: fix WC mapping in non-GEM i915 code.
  drm/i915: Fix regression in 95ca9d
  drm/i915: Retire requests from i915_gem_busy_ioctl.
  drm/i915: suspend/resume GEM when KMS is active
  drm/i915: Don't let a device flush to prepare buffers clear new write_domains.
  drm/i915: Cut two args to set_to_gpu_domain that confused this tricky path.

15 years agodrm/i915: Add missing mutex_lock(&dev->struct_mutex)
Pierre Willenbrock [Mon, 23 Feb 2009 00:12:15 +0000 (10:12 +1000)]
drm/i915: Add missing mutex_lock(&dev->struct_mutex)

there might be a nicer way to fix this but this is the simplest for now.

Signed-off-by: Pierre Willenbrock <pierre@pirsoft.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agodrm/i915: fix WC mapping in non-GEM i915 code.
Jesse Barnes [Mon, 23 Feb 2009 00:08:21 +0000 (10:08 +1000)]
drm/i915: fix WC mapping in non-GEM i915 code.

[airlied - taken from mailing list posting]

Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agodrm/i915: Fix regression in 95ca9d
Chris Wilson [Fri, 20 Feb 2009 17:52:20 +0000 (17:52 +0000)]
drm/i915: Fix regression in 95ca9d

The object is dereferenced before the NULL check. Oops.

Fixes http://bugs.freedesktop.org/show_bug.cgi?id=20235

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agodrm/i915: Retire requests from i915_gem_busy_ioctl.
Eric Anholt [Wed, 18 Feb 2009 17:44:56 +0000 (09:44 -0800)]
drm/i915: Retire requests from i915_gem_busy_ioctl.

This ensures that the user gets the latest information from the hardware
on whether the buffer is busy, potentially reducing the working set of objects
that the user chooses.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agodrm/i915: suspend/resume GEM when KMS is active
Jesse Barnes [Tue, 17 Feb 2009 23:13:31 +0000 (15:13 -0800)]
drm/i915: suspend/resume GEM when KMS is active

In the KMS case, we need to suspend/resume GEM as well.  So on suspend, make
sure we idle GEM and stop any new rendering from coming in, and on resume,
re-init the framebuffer and clear the suspended flag.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agodrm/i915: Don't let a device flush to prepare buffers clear new write_domains.
Eric Anholt [Thu, 19 Feb 2009 22:54:51 +0000 (14:54 -0800)]
drm/i915: Don't let a device flush to prepare buffers clear new write_domains.

The problem was that object_set_to_gpu_domain would set the new write_domains
that are getting set by this batchbuffer, then the accumulated flushes required
for all the objects in preparation for this batchbuffer were posted, and the
brand new write domain would get cleared by the flush being posted.  Instead,
hang on to the new (or old if we're not changing it) value and set it after
the flush is queued.

Results from this noticably included conformance test failures from reads
shortly after writes (where the new write domain had been lost and thus not
flushed and waited on), but is a suspected cause of hangs in some apps when
a write domain is lost on a buffer that gets reused for instruction or
commmand state.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agodrm/i915: Cut two args to set_to_gpu_domain that confused this tricky path.
Eric Anholt [Thu, 19 Feb 2009 22:40:50 +0000 (14:40 -0800)]
drm/i915: Cut two args to set_to_gpu_domain that confused this tricky path.

While not strictly required, it helped while thinking about the following
change.  This change should be invariant.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
15 years agoacpi: add some missing section markers
Jeremy Fitzhardinge [Sun, 22 Feb 2009 22:58:56 +0000 (14:58 -0800)]
acpi: add some missing section markers

early_acpi_os_unmap_memory() is an __init function, and
acpi_os_unmap_memory() is allowed to access an __init function
until acpi_gbl_permanent_mmap is set up.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: refactor x86_quirks support
Ingo Molnar [Sun, 22 Feb 2009 23:34:39 +0000 (00:34 +0100)]
x86: refactor x86_quirks support

Impact: cleanup

Make x86_quirks support more transparent. The highlevel
methods are now named:

  extern void x86_quirk_pre_intr_init(void);
  extern void x86_quirk_intr_init(void);

  extern void x86_quirk_trap_init(void);

  extern void x86_quirk_pre_time_init(void);
  extern void x86_quirk_time_init(void);

This makes it clear that if some platform extension has to
do something here that it is considered ... weird, and is
discouraged.

Also remove arch_hooks.h and move it into setup.h (and other
header files where appropriate).

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: remove various unused subarch hooks
Ingo Molnar [Sun, 22 Feb 2009 23:29:45 +0000 (00:29 +0100)]
x86: remove various unused subarch hooks

Impact: remove dead code

Remove:

 - pre_setup_arch_hook()
 - mca_nmi_hook()

If needed they can be added back via an x86_quirk handler.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: remove the Voyager 32-bit subarch
Ingo Molnar [Sun, 22 Feb 2009 22:19:12 +0000 (23:19 +0100)]
x86: remove the Voyager 32-bit subarch

Impact: remove unused/broken code

The Voyager subarch last built successfully on the v2.6.26 kernel
and has been stale since then and does not build on the v2.6.27,
v2.6.28 and v2.6.29-rc5 kernels.

No actual users beyond the maintainer reported this breakage.
Patches were sent and most of the fixes were accepted but the
discussion around how to do a few remaining issues cleanly
fizzled out with no resolution and the code remained broken.

In the v2.6.30 x86 tree development cycle 32-bit subarch support
has been reworked and removed - and the Voyager code, beyond the
build problems already known, needs serious and significant
changes and probably a rewrite to support it.

CONFIG_X86_VOYAGER has been marked BROKEN then. The maintainer has
been notified but no patches have been sent so far to fix it.

While all other subarchs have been converted to the new scheme,
voyager is still broken. We'd prefer to receive patches which
clean up the current situation in a constructive way, but even in
case of removal there is no obstacle to add that support back
after the issues have been sorted out in a mutually acceptable
fashion.

So remove this inactive code for now.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoselinux: Fix the NetLabel glue code for setsockopt()
Paul Moore [Fri, 20 Feb 2009 21:33:02 +0000 (16:33 -0500)]
selinux: Fix the NetLabel glue code for setsockopt()

At some point we (okay, I) managed to break the ability for users to use the
setsockopt() syscall to set IPv4 options when NetLabel was not active on the
socket in question.  The problem was noticed by someone trying to use the
"-R" (record route) option of ping:

 # ping -R 10.0.0.1
 ping: record route: No message of desired type

The solution is relatively simple, we catch the unlabeled socket case and
clear the error code, allowing the operation to succeed.  Please note that we
still deny users the ability to override IPv4 options on socket's which have
NetLabel labeling active; this is done to ensure the labeling remains intact.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
15 years agocipso: Fix documentation comment
Paul Moore [Fri, 20 Feb 2009 21:32:55 +0000 (16:32 -0500)]
cipso: Fix documentation comment

The CIPSO protocol engine incorrectly stated that the FIPS-188 specification
could be found in the kernel's Documentation directory.  This patch corrects
that by removing the comment and directing users to the FIPS-188 documented
hosted online.  For the sake of completeness I've also included a link to the
CIPSO draft specification on the NetLabel website.

Thanks to Randy Dunlap for spotting the error and letting me know.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
15 years agoMerge branch 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux...
Linus Torvalds [Sun, 22 Feb 2009 21:26:30 +0000 (13:26 -0800)]
Merge branch 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'core/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  PM: Split up sysdev_[suspend|resume] from device_power_[down|up], fix

15 years agoPM: Split up sysdev_[suspend|resume] from device_power_[down|up], fix
Ingo Molnar [Sun, 22 Feb 2009 21:07:03 +0000 (22:07 +0100)]
PM: Split up sysdev_[suspend|resume] from device_power_[down|up], fix

Impact: module build fix

Fix:

 ERROR: "sysdev_resume" [arch/x86/kernel/apm.ko] undefined!
 ERROR: "sysdev_suspend" [arch/x86/kernel/apm.ko] undefined!

As these APIs are now used by the APM driver, which can be built
as a module.

Also fix a few extra (and inconsistent) newlines in comment blocks
preceding these functions.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agodocbook: split kernel-api for device-drivers
Randy Dunlap [Sun, 22 Feb 2009 20:15:45 +0000 (12:15 -0800)]
docbook: split kernel-api for device-drivers

The kernel-api docbook was much larger than any of the others,
so processing it took longer and needed some docbook extras in
some cases, so split it into kernel-api (infrastructure etc.)
and device drivers/device subsystems.  This allows these docbooks
to be generated in parallel.  (This reduced the docbook processing
time on my 4-proc system with make -j4 from about 5min:16sec to
about 2min:01sec.)

The chapters that were moved from kernel-api to device-drivers are:

Driver Basics
Device drivers infrastructure
Parallel Port Devices
Message-based devices
Sound Devices
16x50 UART Driver
Frame Buffer Library
Input Subsystem
Serial Peripheral Interface (SPI)
I2C and SMBus Subsystem

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agox86: improve the help text of X86_EXTENDED_PLATFORM
Ravikiran G Thirumalai [Sat, 21 Feb 2009 00:59:11 +0000 (16:59 -0800)]
x86: improve the help text of X86_EXTENDED_PLATFORM

Change the CONFIG_X86_EXTENDED_PLATFORM help text to display the
32bit/64bit extended platform list. This is as suggested by Ingo.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: shai@scalex86.org
Cc: "Benzi Galili (Benzi@ScaleMP.com)" <benzi@scalemp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'linus' into x86/apic
Ingo Molnar [Sun, 22 Feb 2009 19:05:19 +0000 (20:05 +0100)]
Merge branch 'linus' into x86/apic

Conflicts:
arch/x86/mach-default/setup.c

Semantic conflict resolution:
arch/x86/kernel/setup.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoPM: Split up sysdev_[suspend|resume] from device_power_[down|up]
Rafael J. Wysocki [Sun, 22 Feb 2009 17:38:50 +0000 (18:38 +0100)]
PM: Split up sysdev_[suspend|resume] from device_power_[down|up]

Move the sysdev_suspend/resume from the callee to the callers, with
no real change in semantics, so that we can rework the disabling of
interrupts during suspend/hibernation.

This is based on an earlier patch from Linus.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agox86: Add IRQF_TIMER to legacy x86 timer interrupt descriptors
Linus Torvalds [Sun, 22 Feb 2009 18:27:49 +0000 (10:27 -0800)]
x86: Add IRQF_TIMER to legacy x86 timer interrupt descriptors

Right now nobody cares, but the suspend/resume code will eventually want
to suspend device interrupts without suspending the timer, and will
depend on this flag to know.

The modern x86 timer infrastructure uses the local APIC timers and never
shows up as a device interrupt at all, so it isn't affected and doesn't
need any of this.

Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Sun, 22 Feb 2009 17:28:46 +0000 (09:28 -0800)]
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:
  ACPI: remove CONFIG_ACPI_SYSTEM
  fujitsu-laptop: Use RFKILL support bitmask from firmware
  x86_64: Fix S3 fail path
  x86_64: acpi/wakeup_64 cleanup
  battery: don't assume we are fully charged when not charging or discharging
  ACPI: EC: Add delay for slow MSI controller

15 years agoPATCH [2/2] Documentation/filesystems/sysfs.txt: fix descriptions of device attributes
Mike Murphy [Sun, 22 Feb 2009 06:19:23 +0000 (01:19 -0500)]
PATCH [2/2] Documentation/filesystems/sysfs.txt: fix descriptions of device attributes

Fix descriptions of device attributes to be consistent with the actual
implementations in include/linux/device.h

Signed-off-by: Mike Murphy <mamurph[at]cs.clemson.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoPATCH [1/2] Documentation/driver-model/device.txt: fix struct device_attribute
Mike Murphy [Sun, 22 Feb 2009 06:17:14 +0000 (01:17 -0500)]
PATCH [1/2] Documentation/driver-model/device.txt: fix struct device_attribute

Fix the presented definition of struct device_attribute to match the
actual definition in include/linux/device.h

Signed-off-by: Mike Murphy <mamurph[at]cs.clemson.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agom68k: atari - Rename "mfp" to "st_mfp"
Geert Uytterhoeven [Sun, 22 Feb 2009 08:38:47 +0000 (09:38 +0100)]
m68k: atari - Rename "mfp" to "st_mfp"

http://kisskb.ellerman.id.au/kisskb/buildresult/72115/:
| net/mac80211/ieee80211_i.h:327: error: syntax error before 'volatile'
| net/mac80211/ieee80211_i.h:350: error: syntax error before '}' token
| net/mac80211/ieee80211_i.h:455: error: field 'sta' has incomplete type
| distcc[19430] ERROR: compile net/mac80211/main.c on sprygo/32 failed

This is caused by

| # define mfp ((*(volatile struct MFP*)MFP_BAS))

in arch/m68k/include/asm/atarihw.h, which conflicts with the new "mfp" enum in
net/mac80211/ieee80211_i.h.

Rename "mfp" to "st_mfp", as it's a way too generic name for a global #define.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agox86: select x2apic ops in early apic probe only if x2apic mode is enabled
Suresh Siddha [Sat, 21 Feb 2009 22:23:21 +0000 (14:23 -0800)]
x86: select x2apic ops in early apic probe only if x2apic mode is enabled

If BIOS hands over the control to OS in legacy xapic mode, select
legacy xapic related ops in the early apic probe and shift to x2apic
ops later in the boot sequence, only after enabling x2apic mode.

If BIOS hands over the control in x2apic mode, select x2apic related
ops in the early apic probe.

This fixes the early boot panic, where we were selecting x2apic ops,
while the cpu is still in legacy xapic mode.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: ia32_signal: introduce {get|set}_user_seg()
Hiroshi Shimamoto [Sat, 21 Feb 2009 03:00:54 +0000 (19:00 -0800)]
x86: ia32_signal: introduce {get|set}_user_seg()

Impact: cleanup

Introduce {get|set}_user_seg() and loadsegment_xx() macros to make code clean.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: ia32_signal: introduce GET_SEG() macro
Hiroshi Shimamoto [Sat, 21 Feb 2009 03:00:13 +0000 (19:00 -0800)]
x86: ia32_signal: introduce GET_SEG() macro

Impact: cleanup

introduce GET_SEG() macro like arch/x86/kernel/signal.c.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: ia32_signal: remove unused debug code
Hiroshi Shimamoto [Sat, 21 Feb 2009 02:57:58 +0000 (18:57 -0800)]
x86: ia32_signal: remove unused debug code

Impact: cleanup

DEBUG_SIG will not be used.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86, mm: fault.c, simplify kmmio_fault(), cleanup
Ingo Molnar [Sun, 22 Feb 2009 09:24:18 +0000 (10:24 +0100)]
x86, mm: fault.c, simplify kmmio_fault(), cleanup

Clarify the kmmio_fault() comment.

Acked-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: numa_32.c: fix sparse warning: Using plain integer as NULL pointer
Hannes Eder [Sun, 22 Feb 2009 00:01:13 +0000 (01:01 +0100)]
x86: numa_32.c: fix sparse warning: Using plain integer as NULL pointer

Fix this sparse warning:

  arch/x86/mm/numa_32.c:197:24: warning: Using plain integer as NULL pointer

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Cc: trivial@kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: kexec/i386: fix sparse warnings: Using plain integer as NULL pointer
Hannes Eder [Sun, 22 Feb 2009 00:00:57 +0000 (01:00 +0100)]
x86: kexec/i386: fix sparse warnings: Using plain integer as NULL pointer

Fix these sparse warnings:

  arch/x86/kernel/machine_kexec_32.c:124:22: warning: Using plain integer as NULL pointer
  arch/x86/kernel/traps.c:950:24: warning: Using plain integer as NULL pointer

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Cc: trivial@kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branches 'release', 'bugzilla-12011', 'bugzilla-12632', 'misc' and 'suspend...
Len Brown [Sun, 22 Feb 2009 03:01:43 +0000 (22:01 -0500)]
Merge branches 'release', 'bugzilla-12011', 'bugzilla-12632', 'misc' and 'suspend' into release

15 years agoACPI: remove CONFIG_ACPI_SYSTEM
Bjorn Helgaas [Thu, 19 Feb 2009 19:56:16 +0000 (12:56 -0700)]
ACPI: remove CONFIG_ACPI_SYSTEM

Remove CONFIG_ACPI_SYSTEM.  It was always set the same as CONFIG_ACPI,
and it had no menu label, so there was no way to set it to anything
other than "y".

Some things under CONFIG_ACPI_SYSTEM (acpi_irq_handled, acpi_os_gpe_count(),
event_is_open, register_acpi_notifier(), etc.) are used unconditionally
by the CA, the OSPM, and drivers, so we depend on them always being
present.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
15 years agofujitsu-laptop: Use RFKILL support bitmask from firmware
Tony Vroon [Mon, 2 Feb 2009 11:11:10 +0000 (11:11 +0000)]
fujitsu-laptop: Use RFKILL support bitmask from firmware

Up until now, we polled the rfkill status for every incoming FUJ02E3 ACPI event.
It turns out that the firmware has a bitmask which indicates what rfkill-related
state it can report.
The rfkill_supported bitmask is now used to avoid polling for rfkill at all in
the notification handler if there is no support. Also, it is used in the platform
device callbacks. As before we register all callbacks and report "unknown" if the
firmware does not give us status updates for that particular bit.

This was fed through checkpatch.pl and tested on the S6420, S7020 and P8010
platforms.

Signed-off-by: Tony Vroon <tony@linx.net>
Tested-by: Stephen Gildea <stepheng+linux@gildea.com>
Acked-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
Signed-off-by: Len Brown <len.brown@intel.com>
15 years agox86_64: Fix S3 fail path
Jiri Slaby [Sun, 15 Feb 2009 21:46:45 +0000 (22:46 +0100)]
x86_64: Fix S3 fail path

As acpi_enter_sleep_state can fail, take this into account in
do_suspend_lowlevel and don't return to the do_suspend_lowlevel's
caller. This would break (currently) fpu status and preempt count.

Technically, this means use `call' instead of `jmp' and `jmp' to
the `resume_point' after the `call' (i.e. if
acpi_enter_sleep_state returns=fails). `resume_point' will handle
the restore of fpu and preempt count gracefully.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
15 years agox86_64: acpi/wakeup_64 cleanup
Jiri Slaby [Sun, 15 Feb 2009 21:45:49 +0000 (22:45 +0100)]
x86_64: acpi/wakeup_64 cleanup

- remove %ds re-set, it's already set in wakeup_long64
- remove double labels and alignment (ENTRY already adds both)
- use meaningful resume point labelname
- skip alignment while jumping from wakeup_long64 to the resume point
- remove .size, .type and unused labels
[v2]
- added ENDPROCs

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
15 years agoMerge branch 'hibernate'
Linus Torvalds [Sat, 21 Feb 2009 22:17:26 +0000 (14:17 -0800)]
Merge branch 'hibernate'

* hibernate:
  PM: Fix suspend_console and resume_console to use only one semaphore
  PM: Wait for console in resume
  PM: Fix pm_notifiers during user mode hibernation
  swsusp: clean up shrink_all_zones()
  swsusp: dont fiddle with swappiness
  PM: fix build for CONFIG_PM unset
  PM/hibernate: fix "swap breaks after hibernation failures"
  PM/resume: wait for device probing to finish
  Consolidate driver_probe_done() loops into one place

15 years agoPM: Fix suspend_console and resume_console to use only one semaphore
Arve Hjønnevåg [Sat, 14 Feb 2009 01:07:24 +0000 (02:07 +0100)]
PM: Fix suspend_console and resume_console to use only one semaphore

This fixes a race where a thread acquires the console while the
console is suspended, and the console is resumed before this
thread releases it. In this case, the secondary console
semaphore would be left locked, and the primary semaphore would
be released twice. This in turn would cause the console switch
on suspend or resume to hang forever.

Note that suspend_console does not actually lock the console
for clients that use acquire_console_sem, it only locks it for
clients that use try_acquire_console_sem. If we change
suspend_console to fully lock the console, then the kernel
may deadlock on suspend. One client of try_acquire_console_sem
is acquire_console_semaphore_for_printk, which uses it to
prevent printk from using the console while it is suspended.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoPM: Wait for console in resume
Arve Hjønnevåg [Sat, 14 Feb 2009 01:06:17 +0000 (02:06 +0100)]
PM: Wait for console in resume

Avoids later waking up to a blinking cursor if the device woke up and
returned to sleep before the console switch happened.

Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoPM: Fix pm_notifiers during user mode hibernation
Andrey Borzenkov [Sat, 14 Feb 2009 01:05:14 +0000 (02:05 +0100)]
PM: Fix pm_notifiers during user mode hibernation

Snapshot device is opened with O_RDONLY during suspend and O_WRONLY durig
resume.  Make sure we also call notifiers with correct parameter telling
them what we are really doing.

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoswsusp: clean up shrink_all_zones()
Johannes Weiner [Sat, 14 Feb 2009 01:04:10 +0000 (02:04 +0100)]
swsusp: clean up shrink_all_zones()

Move local variables to innermost possible scopes and use local
variables to cache calculations/reads done more than once.

No change in functionality (intended).

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoswsusp: dont fiddle with swappiness
Johannes Weiner [Sat, 14 Feb 2009 01:03:08 +0000 (02:03 +0100)]
swsusp: dont fiddle with swappiness

sc.swappiness is not used in the swsusp memory shrinking path, do not
set it.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoPM: fix build for CONFIG_PM unset
Rafael J. Wysocki [Sat, 14 Feb 2009 01:02:16 +0000 (02:02 +0100)]
PM: fix build for CONFIG_PM unset

Compilation of kprobes.c with CONFIG_PM unset is broken due to some broken
config dependncies.  Fix that.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Reported-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoPM/hibernate: fix "swap breaks after hibernation failures"
Alan Jenkins [Sat, 14 Feb 2009 01:01:14 +0000 (02:01 +0100)]
PM/hibernate: fix "swap breaks after hibernation failures"

http://bugzilla.kernel.org/show_bug.cgi?id=12239

The image writing code dropped a reference to the current swap device.
This doesn't show up if the hibernation succeeds - because it doesn't
affect the image which gets resumed.  But it means multiple _failed_
hibernations end up freeing the swap device while it is still use!

swsusp_write() finds the block device for the swap file using swap_type_of().
It then uses blkdev_get() / blkdev_put() to open and close the block device.

Unfortunately, blkdev_get() assumes ownership of the inode of the block_device
passed to it.  So blkdev_put() calls iput() on the inode.  This is by design
and other callers expect this behaviour.  The fix is for swap_type_of() to take
a reference on the inode using bdget().

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoPM/resume: wait for device probing to finish
Arjan van de Ven [Sat, 14 Feb 2009 01:00:19 +0000 (02:00 +0100)]
PM/resume: wait for device probing to finish

the resume code does not currently wait for device probing to finish.
Even without async function calls this is dicey and not correct,
but with async function calls during the boot sequence this is going
to get hit more...

This patch adds the synchronization using the newly introduced helper.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoConsolidate driver_probe_done() loops into one place
Arjan van de Ven [Sat, 14 Feb 2009 00:59:06 +0000 (01:59 +0100)]
Consolidate driver_probe_done() loops into one place

there's a few places that currently loop over driver_probe_done(), and
I'm about to add another one. This patch abstracts it into a helper
to reduce duplication.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agobattery: don't assume we are fully charged when not charging or discharging
Richard Hughes [Sun, 25 Jan 2009 15:05:50 +0000 (15:05 +0000)]
battery: don't assume we are fully charged when not charging or discharging

On hardware like the T61 it can take a couple of seconds for the battery
to start charging after the power is connected, and we incorrectly tell
userspace that we are fully charged, and then go back to charging.

Only mark a battery as fully charged when the preset charge matches either
the last full charge, or the design charge.

http://bugzilla.kernel.org/show_bug.cgi?id=12632

Signed-off-by: Richard Hughes <hughsient@gmail.com>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
15 years agoACPI: EC: Add delay for slow MSI controller
Alexey Starikovskiy [Sat, 21 Feb 2009 17:18:13 +0000 (12:18 -0500)]
ACPI: EC: Add delay for slow MSI controller

http://bugzilla.kernel.org/show_bug.cgi?id=12011

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
15 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 21 Feb 2009 17:15:39 +0000 (09:15 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mce: remove incorrect __cpuinit for mce_cpu_features()
  MAINTAINERS: paravirt-ops maintainers update

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Sat, 21 Feb 2009 17:11:28 +0000 (09:11 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Fix multiuser mounts so server does not invalidate earlier security contexts
  [CIFS] improve posix semantics of file create
  [CIFS] Fix oops in cifs_strfromUCS_le mounting to servers which do not specify their OS
  cifs: posix fill in inode needed by posix open
  cifs: properly handle case where CIFSGetSrvInodeNumber fails
  cifs: refactor new_inode() calls and inode initialization
  [CIFS] Prevent OOPs when mounting with remote prefixpath.
  [CIFS] ipv6_addr_equal for address comparison

15 years agox86, mce: remove incorrect __cpuinit for mce_cpu_features()
H. Peter Anvin [Sat, 21 Feb 2009 07:35:51 +0000 (23:35 -0800)]
x86, mce: remove incorrect __cpuinit for mce_cpu_features()

Impact: Bug fix on UP

Checkin 6ec68bff3c81e776a455f6aca95c8c5f1d630198:
    x86, mce: reinitialize per cpu features on resume

introduced a call to mce_cpu_features() in the resume path, in order
for the MCE machinery to get properly reinitialized after a resume.
However, this function (and its successors) was flagged __cpuinit,
which becomes __init on UP configurations (on SMP suspend/resume
requires CPU hotplug and so this would not be seen.)

Remove the offending __cpuinit annotations for mce_cpu_features() and
its successor functions.

Cc: Andi Kleen <ak@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
15 years ago[CIFS] Fix multiuser mounts so server does not invalidate earlier security contexts
Steve French [Fri, 20 Feb 2009 05:43:09 +0000 (05:43 +0000)]
[CIFS] Fix multiuser mounts so server does not invalidate earlier security contexts

When two different users mount the same Windows 2003 Server share using CIFS,
the first session mounted can be invalidated.  Some servers invalidate the first
smb session when a second similar user (e.g. two users who get mapped by server to "guest")
authenticates an smb session from the same client.

By making sure that we set the 2nd and subsequent vc numbers to nonzero values,
this ensures that we will not have this problem.

Fixes Samba bug 6004, problem description follows:
How to reproduce:

- configure an "open share" (full permissions to Guest user) on Windows 2003
Server (I couldn't reproduce the problem with Samba server or Windows older
than 2003)
- mount the share twice with different users who will be authenticated as guest.

 noacl,noperm,user=john,dir_mode=0700,domain=DOMAIN,rw
 noacl,noperm,user=jeff,dir_mode=0700,domain=DOMAIN,rw

Result:

- just the mount point mounted last is accessible:

Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years ago[CIFS] improve posix semantics of file create
Steve French [Fri, 20 Feb 2009 04:32:45 +0000 (04:32 +0000)]
[CIFS] improve posix semantics of file create

Samba server added support for a new posix open/create/mkdir operation
a year or so ago, and we added support to cifs for mkdir to use it,
but had not added the corresponding code to file create.

The following patch helps improve the performance of the cifs create
path (to Samba and servers which support the cifs posix protocol
extensions).  Using Connectathon basic test1, with 2000 files, the
performance improved about 15%, and also helped reduce network traffic
(17% fewer SMBs sent over the wire) due to saving a network round trip
for the SetPathInfo on every file create.

It should also help the semantics (and probably the performance) of
write (e.g. when posix byte range locks are on the file) on file
handles opened with posix create, and adds support for a few flags
which would have to be ignored otherwise.

Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years ago[CIFS] Fix oops in cifs_strfromUCS_le mounting to servers which do not specify their OS
Steve French [Tue, 17 Feb 2009 01:29:40 +0000 (01:29 +0000)]
[CIFS] Fix oops in cifs_strfromUCS_le mounting to servers which do not specify their OS

Fixes kernel bug #10451 http://bugzilla.kernel.org/show_bug.cgi?id=10451

Certain NAS appliances do not set the operating system or network operating system
fields in the session setup response on the wire.  cifs was oopsing on the unexpected
zero length response fields (when trying to null terminate a zero length field).

This fixes the oops.

Acked-by: Jeff Layton <jlayton@redhat.com>
CC: stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years agocifs: posix fill in inode needed by posix open
Jeff Layton [Wed, 11 Feb 2009 13:08:28 +0000 (08:08 -0500)]
cifs: posix fill in inode needed by posix open

function needed to prepare for posix open

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years agocifs: properly handle case where CIFSGetSrvInodeNumber fails
Jeff Layton [Wed, 11 Feb 2009 13:08:26 +0000 (08:08 -0500)]
cifs: properly handle case where CIFSGetSrvInodeNumber fails

...if it does then we pass a pointer to an unintialized variable for
the inode number to cifs_new_inode. Have it pass a NULL pointer instead.

Also tweak the function prototypes to reduce the amount of casting.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years agocifs: refactor new_inode() calls and inode initialization
Jeff Layton [Tue, 10 Feb 2009 12:33:57 +0000 (07:33 -0500)]
cifs: refactor new_inode() calls and inode initialization

Move new inode creation into a separate routine and refactor the
callers to take advantage of it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years ago[CIFS] Prevent OOPs when mounting with remote prefixpath.
Igor Mammedov [Tue, 10 Feb 2009 11:10:26 +0000 (14:10 +0300)]
[CIFS] Prevent OOPs when mounting with remote prefixpath.

Fixes OOPs with message 'kernel BUG at fs/cifs/cifs_dfs_ref.c:274!'.
Checks if the prefixpath in an accesible while we are still in cifs_mount
and fails with reporting a error if we can't access the prefixpath

Should fix Samba bugs 6086 and 5861 and kernel bug 12192

Signed-off-by: Igor Mammedov <niallain@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
15 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Sat, 21 Feb 2009 02:04:53 +0000 (18:04 -0800)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (26 commits)
  drm/radeon: update sarea copies of last_ variables on resume.
  drm/i915: Keep refs on the object over the lifetime of vmas for GTT mmap.
  drm/i915: take struct mutex around fb unref
  drm: Use spread spectrum when the bios tells us it's ok.
  drm: Collapse identical i8xx_clock() and i9xx_clock().
  drm: Bring PLL limits in sync with DDX values.
  drm: Add locking around cursor gem operations.
  drm: Propagate failure from setting crtc base.
  drm: Check for a NULL encoder when reverting on error path
  drm/i915: Cleanup the hws on ringbuffer constrution failure.
  drm/i915: Don't add panel_fixed_mode to the probed modes list at LVDS init.
  drm: Release user fbs in drm_release
  drm/i915: Unpin the fb on error during construction.
  drm/i915: Unpin the hws if we fail to kmap.
  drm/i915: Unpin the ringbuffer if we fail to ioremap it.
  drm/i915: unpin for an invalid memory domain.
  drm/i915: Release and unlock on mmap_gtt error path.
  drm/i915: Set framebuffer alignment based upon the fence constraints.
  drm: Do not leak a new reference for flink() on an existing name
  drm/i915: Fix potential AB-BA deadlock in i915_gem_execbuffer()
  ...

15 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 21 Feb 2009 02:03:07 +0000 (18:03 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: use the right protections for split-up pagetables
  x86, vmi: TSC going backwards check in vmi clocksource

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Sat, 21 Feb 2009 02:02:38 +0000 (18:02 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] qla2xxx: Update version number to 8.03.00-k3.
  [SCSI] qla2xxx: Mask out 'reserved' bits while processing FLT regions.
  [SCSI] qla2xxx: Correct slab-error overwrite during vport creation and deletion.
  [SCSI] qla2xxx: Properly acknowledge IDC notification messages.
  [SCSI] qla2xxx: Remove interrupt request bit check in the response processing path in multiq mode.
  [SCSI] lpfc: introduce missing kfree
  [SCSI] libiscsi: Fix scsi command timeout oops in iscsi_eh_timed_out
  [SCSI] qla2xxx: fix Kernel Panic with Qlogic 2472 Card.
  [SCSI] ibmvfc: Increase cancel timeout
  [SCSI] ibmvfc: Fix rport relogin
  [SCSI] ibmvfc: Fix command timeout errors
  [SCSI] sg: fix device number in blktrace data
  [SCSI] scsi_scan: add missing interim SDEV_DEL state if slave_alloc fails
  [SCSI] ibmvscsi: Correct DMA mapping leak

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Sat, 21 Feb 2009 01:59:14 +0000 (17:59 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: check file pointer in btrfs_sync_file

15 years ago8250: fix boot hang with serial console when using with Serial Over Lan port
Mauro Carvalho Chehab [Fri, 20 Feb 2009 23:38:52 +0000 (15:38 -0800)]
8250: fix boot hang with serial console when using with Serial Over Lan port

Intel 8257x Ethernet boards have a feature called Serial Over Lan.

This feature works by emulating a serial port, and it is detected by
kernel as a normal 8250 port.  However, this emulation is not perfect, as
also noticed on changeset 7500b1f602aad75901774a67a687ee985d85893f.

Before this patch, the kernel were trying to check if the serial TX is
capable of work using IRQ's.

This were done with a code similar this:

        serial_outp(up, UART_IER, UART_IER_THRI);
        lsr = serial_in(up, UART_LSR);
        iir = serial_in(up, UART_IIR);
        serial_outp(up, UART_IER, 0);

        if (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT)
up->bugs |= UART_BUG_TXEN;

This works fine for other 8250 ports, but, on 8250-emulated SoL port, the
chip is a little lazy to down UART_IIR_NO_INT at UART_IIR register.

Due to that, UART_BUG_TXEN is sometimes enabled.  However, as TX IRQ keeps
working, and the TX polling is now enabled, the driver miss-interprets the
IRQ received later, hanging up the machine until a key is pressed at the
serial console.

This is the 6 version of this patch.  Previous versions were trying to
introduce a large enough delay between serial_outp and serial_in(up,
UART_IIR), but not taking forever.  However, the needed delay couldn't be
safely determined.

At the experimental tests, a delay of 1us solves most of the cases, but
still hangs sometimes.  Increasing the delay to 5us was better, but still
doesn't solve.  A very high delay of 50 ms seemed to work every time.

However, poking around with delays and pray for it to be enough doesn't
seem to be a good approach, even for a quirk.

So, instead of playing with random large arbitrary delays, let's just
disable UART_BUG_TXEN for all SoL ports.

[akpm@linux-foundation.org: fix warnings]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoatyfb: remove unused local variable `pwr_command'
Yang Hongyang [Fri, 20 Feb 2009 23:38:51 +0000 (15:38 -0800)]
atyfb: remove unused local variable `pwr_command'

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi_bitbang: add more lowlevel function documentation
Michael Buesch [Fri, 20 Feb 2009 23:38:49 +0000 (15:38 -0800)]
spi_bitbang: add more lowlevel function documentation

This adds more documentation of the lowlevel API to avoid future bugs.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agovmalloc: call flush_cache_vunmap() from unmap_kernel_range()
Tejun Heo [Fri, 20 Feb 2009 23:38:48 +0000 (15:38 -0800)]
vmalloc: call flush_cache_vunmap() from unmap_kernel_range()

Impact: proper vcache flush on unmap_kernel_range()

flush_cache_vunmap() should be called before pages are unmapped.  Add
a call to it in unmap_kernel_range().

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: <stable@kernel.org> [2.6.28.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agocpuset: various documentation fixes and updates
Li Zefan [Fri, 20 Feb 2009 23:38:48 +0000 (15:38 -0800)]
cpuset: various documentation fixes and updates

I noticed the old commit 8f5aa26c75b7722e80c0c5c5bb833d41865d7019
("cpusets: update_cpumask documentation fix") is not a complete fix,
resulting in inconsistent paragraphs.  This patch fixes it and does other
fixes and updates:

- s/migrate_all_tasks()/migrate_live_tasks()/
- describe more cpuset control files
- s/cpumask_t/struct cpumask/
- document cpu hotplug and change of 'sched_relax_domain_level' may cause
  domain rebuild
- document various ways to query and modify cpusets
- the equivalent of "mount -t cpuset" is "mount -t cgroup -o cpuset,noprefix"

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodocsrc: use config instead of menuconfig
Randy Dunlap [Fri, 20 Feb 2009 23:38:47 +0000 (15:38 -0800)]
docsrc: use config instead of menuconfig

BUILD_DOCSRC should be controlled by "config" instead of "menuconfig".
I have no idea how I managed to use "menuconfig" here.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosx.c: avoid referencing freed memory if copy_from_user() fails
Dan Carpenter [Fri, 20 Feb 2009 23:38:46 +0000 (15:38 -0800)]
sx.c: avoid referencing freed memory if copy_from_user() fails

The "break" would just result in reusing a free'd pointer.  I don't have
the cards myself to test it though.  :/

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosx.c: fix dbl statement if - add missing braces
Ilpo Järvinen [Fri, 20 Feb 2009 23:38:45 +0000 (15:38 -0800)]
sx.c: fix dbl statement if - add missing braces

Caused by 736d54533aed (sx.c: fix missed unlock_kernel() on error path in
sx_fw_ioctl()).  You guys keep breaking things this way in every single
kernel release in at least couple of places...  :-(

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Acked-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoREADME: fix a wrong filename
Li Zefan [Fri, 20 Feb 2009 23:38:43 +0000 (15:38 -0800)]
README: fix a wrong filename

It should be Documentation/build/kconfig.txt.

Introduced by commit 2af238e455ef5fd31c2f7a06c2db3f13d843b9bf
("kbuild: make *config usage docs").

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoslab: introduce kzfree()
Johannes Weiner [Fri, 20 Feb 2009 23:38:41 +0000 (15:38 -0800)]
slab: introduce kzfree()

kzfree() is a wrapper for kfree() that additionally zeroes the underlying
memory before releasing it to the slab allocator.

Currently there is code which memset()s the memory region of an object
before releasing it back to the slab allocator to make sure
security-sensitive data are really zeroed out after use.

These callsites can then just use kzfree() which saves some code, makes
users greppable and allows for a stupid destructor that isn't necessarily
aware of the actual object size.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Matt Mackall <mpm@selenic.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agomn10300: fix typo && -> || in arch/mn10300/unit-asb2305/pci.c
Wei Yongjun [Fri, 20 Feb 2009 23:38:40 +0000 (15:38 -0800)]
mn10300: fix typo && -> || in arch/mn10300/unit-asb2305/pci.c

Fix the typo && -> ||.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agomn10300: fix oprofile
David Howells [Fri, 20 Feb 2009 23:38:38 +0000 (15:38 -0800)]
mn10300: fix oprofile

oprofile for MN10300 seems to have been broken by the advent of the new
tracing framework.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agouml: fix vde network backend in user mode linux
Luca Bigliardi [Fri, 20 Feb 2009 23:38:36 +0000 (15:38 -0800)]
uml: fix vde network backend in user mode linux

* Replace kmalloc() with uml_kmalloc() (fix build failure)

* Remove unnecessary UM_KERN_INFO in printk() (don't display '<6>' while
  printing info)

Signed-off-by: Luca Bigliardi <shammash@artha.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: WANG Cong <wangcong@zeuux.org>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agox86, mm: fault.c, update copyrights
Ingo Molnar [Fri, 20 Feb 2009 22:13:36 +0000 (23:13 +0100)]
x86, mm: fault.c, update copyrights

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86, mm: fault.c, give another attempt at prefetch handing before SIGBUS
Ingo Molnar [Fri, 20 Feb 2009 22:39:02 +0000 (23:39 +0100)]
x86, mm: fault.c, give another attempt at prefetch handing before SIGBUS

Impact: extend prefetch handling on 64-bit

Currently there's an extra is_prefetch() check done in do_sigbus(),
which we only do on 32 bits.

This is a last-ditch check before we terminate a task, so it's worth
giving prefetch instructions another chance - should none of our
existing quirks have caught a prefetch instruction related spurious
fault.

The only risk is if a prefetch causes a real sigbus, in that case
we'll not OOM but try another fault. But this code has been on
32-bit for a long time, so it should be fine in practice.

So do this on 64-bit too - and thus remove one more #ifdef.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86, mm: fault.c, remove #ifdef from fault_in_kernel_space()
Ingo Molnar [Fri, 20 Feb 2009 22:27:29 +0000 (23:27 +0100)]
x86, mm: fault.c, remove #ifdef from fault_in_kernel_space()

Impact: cleanup

Removal of an #ifdef in fault_in_kernel_space(), by making
use of the new TASK_SIZE_MAX symbol which is now available
on 32-bit too.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86, mm: rename TASK_SIZE64 => TASK_SIZE_MAX
Ingo Molnar [Fri, 20 Feb 2009 22:32:28 +0000 (23:32 +0100)]
x86, mm: rename TASK_SIZE64 => TASK_SIZE_MAX

Impact: cleanup

Rename TASK_SIZE64 to TASK_SIZE_MAX, and provide the
define on 32-bit too. (mapped to TASK_SIZE)

This allows 32-bit code to make use of the (former-) TASK_SIZE64
symbol as well, in a clean way.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>