platform/kernel/kernel-mfld-blackbay.git
15 years agosched: Rename init_cfs_rq => init_tg_cfs_rq
Anirban Sinha [Sat, 29 Aug 2009 05:40:43 +0000 (22:40 -0700)]
sched: Rename init_cfs_rq => init_tg_cfs_rq

... so that it does not share a common name with a function
within the same scope.

Signed-off-by: Anirban Sinha <asinha@zeugmasystems.com>
LKML-Reference: <DDFD17CC94A9BD49A82147DDF7D545C501EA98A6@exchange.ZeugmaSystems.local>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fix division by zero - really
Peter Zijlstra [Thu, 27 Aug 2009 11:08:56 +0000 (13:08 +0200)]
sched: Fix division by zero - really

When re-computing the shares for each task group's cpu
representation we need the ratio of weight on each cpu vs the
total weight of the sched domain.

Since load-balancing is loosely (read not) synchronized, the
weight of individual cpus can change between doing the sum and
calculating the ratio.

The previous patch dealt with only one of the race scenarios,
this patch side steps them all by saving a snapshot of all the
individual cpu weights, thereby always working on a consistent
set.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: torvalds@linux-foundation.org
Cc: jes@sgi.com
Cc: jens.axboe@oracle.com
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1251371336.18584.77.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Avoid division by zero
Peter Zijlstra [Fri, 21 Aug 2009 11:58:54 +0000 (13:58 +0200)]
sched: Avoid division by zero

Patch a5004278f0525dcb9aa43703ef77bf371ea837cd (sched: Fix
cgroup smp fairness) introduced the possibility of a
divide-by-zero because load-balancing is not synchronized
between sched_domains.

This can cause the state of cpus to change between the first
and second loop over the sched domain in tg_shares_up().

Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1250855934.7538.30.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Use for_each_class macro in move_one_task()
Hiroshi Shimamoto [Tue, 18 Aug 2009 04:01:01 +0000 (13:01 +0900)]
sched: Use for_each_class macro in move_one_task()

Replace for loop with the macro for_each_class to cleanup.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
LKML-Reference: <4A8A277D.4090304@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched, task_struct: stack_canary is not needed without CC_STACKPROTECTOR
Hiroshi Shimamoto [Tue, 18 Aug 2009 06:06:02 +0000 (15:06 +0900)]
sched, task_struct: stack_canary is not needed without CC_STACKPROTECTOR

The field stack_canary is only used with CC_STACKPROTECTOR.
This patch reduces task_struct size without CC_STACKPROTECTOR.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
LKML-Reference: <4A8A44CA.2020701@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Add default defines for PREEMPT_ACTIVE
Arnd Bergmann [Thu, 6 Aug 2009 23:02:50 +0000 (16:02 -0700)]
sched: Add default defines for PREEMPT_ACTIVE

The PREEMPT_ACTIVE setting doesn't actually need to be
arch-specific, so set up a sane default for all arches to
(hopefully) migrate to.

> if we look at linux/hardirq.h, it makes this claim:
>  * - bit 28 is the PREEMPT_ACTIVE flag
> if that's true, then why are we letting any arch set this define ?  a
> quick survey shows that half the arches (11) are using 0x10000000 (bit
> 28) while the other half (10) are using 0x4000000 (bit 26).  and then
> there is the ia64 oddity which uses bit 30.  the exact value here
> shouldnt really matter across arches though should it ?

actually alpha, arm and avr32 also use bit 30 (0x40000000),
there are only five (or eight, depending on how you count)
architectures (blackfin, h8300, m68k, s390 and sparc) using bit
26.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fix cpupri build on !CONFIG_SMP
Ingo Molnar [Sat, 19 Apr 2008 10:11:10 +0000 (12:11 +0200)]
sched: Fix cpupri build on !CONFIG_SMP

This build bug:

 In file included from kernel/sched.c:1765:
 kernel/sched_rt.c: In function ‘has_pushable_tasks’:
 kernel/sched_rt.c:1069: error: ‘struct rt_rq’ has no member named ‘pushable_tasks’
 kernel/sched_rt.c: In function ‘pick_next_task_rt’:
 kernel/sched_rt.c:1084: error: ‘struct rq’ has no member named ‘post_schedule’

Triggers because both pushable_tasks and post_schedule are
SMP-only fields.

Move pushable_tasks() to the SMP section and #ifdef the post_schedule use.

Cc: Gregory Haskins <ghaskins@novell.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090729150422.17691.55590.stgit@dev.haskins.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Ensure the migration task doesn't go away during use
Peter Zijlstra [Tue, 21 Jul 2009 11:56:38 +0000 (13:56 +0200)]
sched: Ensure the migration task doesn't go away during use

Like sched_migrate_task(), set_cpus_allowed_ptr() should hold
onto the migration thread too.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Add debug check to task_of()
Peter Zijlstra [Fri, 24 Jul 2009 10:25:30 +0000 (12:25 +0200)]
sched: Add debug check to task_of()

A frequent mistake appears to be to call task_of() on a
scheduler entity that is not actually a task, which can result
in a wild pointer.

Add a check to catch these mistakes.

Suggested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fully integrate cpus_active_map and root-domain code
Gregory Haskins [Thu, 30 Jul 2009 14:57:23 +0000 (10:57 -0400)]
sched: Fully integrate cpus_active_map and root-domain code

Reflect "active" cpus in the rq->rd->online field, instead of
the online_map.

The motivation is that things that use the root-domain code
(such as cpupri) only care about cpus classified as "active"
anyway. By synchronizing the root-domain state with the active
map, we allow several optimizations.

For instance, we can remove an extra cpumask_and from the
scheduler hotpath by utilizing rq->rd->online (since it is now
a cached version of cpu_active_map & rq->rd->span).

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Max Krasnyansky <maxk@qualcomm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090730145723.25226.24493.stgit@dev.haskins.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Enhance the pre/post scheduling logic
Gregory Haskins [Wed, 29 Jul 2009 15:08:47 +0000 (11:08 -0400)]
sched: Enhance the pre/post scheduling logic

We currently have an explicit "needs_post" vtable method which
returns a stack variable for whether we should later run
post-schedule.  This leads to an awkward exchange of the
variable as it bubbles back up out of the context switch. Peter
Zijlstra observed that this information could be stored in the
run-queue itself instead of handled on the stack.

Therefore, we revert to the method of having context_switch
return void, and update an internal rq->post_schedule variable
when we require further processing.

In addition, we fix a race condition where we try to access
current->sched_class without holding the rq->lock.  This is
technically racy, as the sched-class could change out from
under us.  Instead, we reference the per-rq post_schedule
variable with the runqueue unlocked, but with preemption
disabled to see if we need to reacquire the rq->lock.

Finally, we clean the code up slightly by removing the #ifdef
CONFIG_SMP conditionals from the schedule() call, and implement
some inline helper functions instead.

This patch passes checkpatch, and rt-migrate.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090729150422.17691.55590.stgit@dev.haskins.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Add new prio to cpupri before removing old prio
Steven Rostedt [Wed, 29 Jul 2009 04:21:23 +0000 (00:21 -0400)]
sched: Add new prio to cpupri before removing old prio

We need to add the new prio to the cpupri accounting before
removing the old prio. This is because removing the old prio
first will open a race window where the cpu will be removed
from pri_active. In this case the cpu will not be visible for
RT push and pulls. This could cause a RT task to not migrate
appropriately, and create a very large latency.

This bug was found with the use of ftrace sched events and
trace_printk.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090729042526.438281019@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Check for pushing rt tasks after all scheduling
Steven Rostedt [Wed, 29 Jul 2009 04:21:22 +0000 (00:21 -0400)]
sched: Check for pushing rt tasks after all scheduling

The current method for pushing RT tasks after scheduling only
happens after a context switch. But we found cases where a task
is set up on a run queue to be pushed but the push never
happens because the schedule chooses the same task.

This bug was found with the help of Gregory Haskins and the use
of ftrace (trace_printk). It tooks several days for both of us
analyzing the code and the trace output to find this.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090729042526.205923666@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Optimize unused cgroup configuration
Peter Zijlstra [Wed, 3 Jun 2009 13:41:20 +0000 (15:41 +0200)]
sched: Optimize unused cgroup configuration

When cgroup group scheduling is built in, skip some code paths
if we don't have any (but the root) cgroups configured.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fix cgroup smp fairness
Peter Zijlstra [Mon, 27 Jul 2009 12:04:49 +0000 (14:04 +0200)]
sched: Fix cgroup smp fairness

Commit ec4e0e2fe018992d980910db901637c814575914 ("fix
inconsistency when redistribute per-cpu tg->cfs_rq shares")
broke cgroup smp fairness.

In order to avoid starvation of newly placed tasks, we never
quite set the share of an empty cpu group-task to 0, but
instead we set it as if there's a single NICE-0 task present.

If however we actually set this in cfs_rq[cpu]->shares, that
means the total shares for that group will be slightly inflated
every time we balance, causing the observed unfairness.

Fix this by setting cfs_rq[cpu]->shares to 0 but actually
setting the effective weight of the related se to the inflated
number.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1248696557.6987.1615.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'sched/urgent' into sched/core
Ingo Molnar [Sun, 2 Aug 2009 12:11:26 +0000 (14:11 +0200)]
Merge branch 'sched/urgent' into sched/core

Merge reason: avoid upcoming patch conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fix race in cpupri introduced by cpumask_var changes
Gregory Haskins [Thu, 30 Jul 2009 14:57:28 +0000 (10:57 -0400)]
sched: Fix race in cpupri introduced by cpumask_var changes

Background:

Several race conditions in the scheduler have cropped up
recently, which Steven and I have tracked down using ftrace.
The most recent one turns out to be a race in how the scheduler
determines a suitable migration target for RT tasks, introduced
recently with commit:

    commit 68e74568fbe5854952355e942acca51f138096d9
    Date:   Tue Nov 25 02:35:13 2008 +1030

        sched: convert struct cpupri_vec cpumask_var_t.

The original design of cpupri allowed lockless readers to
quickly determine a best-estimate target.  Races between the
pri_active bitmap and the vec->mask were handled in the
original code because we would detect and return "0" when this
occured.  The design was predicated on the *effective*
atomicity (*) of caching the result of cpus_and() between the
cpus_allowed and the vec->mask.

Commit 68e74568 changed the behavior such that vec->mask is
accessed multiple times.  This introduces a subtle race, the
result of which means we can have a result that returns "1",
but with an empty bitmap.

*) yes, we know cpus_and() is not a locked operator across the
   entire composite array, but it is implicitly atomic on a
   per-word basis which is all the design required to work.

Implementation:

Rather than forgoing the lockless design, or reverting to a
stack-based cpumask_t, we simply check for when the race has
been encountered and continue processing in the event that the
race is hit.  This renders the removal race as if the priority
bit had been atomically cleared as well, and allows the
algorithm to execute correctly.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090730145728.25226.92769.stgit@dev.haskins.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fix latencytop and sleep profiling vs group scheduling
Peter Zijlstra [Thu, 23 Jul 2009 18:13:26 +0000 (20:13 +0200)]
sched: Fix latencytop and sleep profiling vs group scheduling

The latencytop and sleep accounting code assumes that any
scheduler entity represents a task, this is not so.

Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: Fix cond_resched_lock() in !CONFIG_PREEMPT
Frederic Weisbecker [Fri, 24 Jul 2009 18:05:23 +0000 (20:05 +0200)]
sched: Fix cond_resched_lock() in !CONFIG_PREEMPT

The might_sleep() test inside cond_resched_lock() assumes the
spinlock is held and then preemption is disabled. This is true
with CONFIG_PREEMPT but the preempt_count() doesn't change
otherwise.

Check by starting from the appropriate preempt offset depending
on the config.

Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1248458723-12146-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoLinux 2.6.31-rc5
Linus Torvalds [Sat, 1 Aug 2009 00:40:45 +0000 (17:40 -0700)]
Linux 2.6.31-rc5

15 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Fri, 31 Jul 2009 19:17:37 +0000 (12:17 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: bump up nr_to_write in xfs_vm_writepage
  xfs: reduce bmv_count in xfs_vn_fiemap

15 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Fri, 31 Jul 2009 19:10:26 +0000 (12:10 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  io context: fix ref counting
  block: make the end_io functions be non-GPL exports
  block: fix improper kobject release in blk_integrity_unregister
  block: always assign default lock to queues
  mg_disk: Add missing ready status check on mg_write()
  mg_disk: fix issue with data integrity on error in mg_write()
  mg_disk: fix reading invalid status when use polling driver
  mg_disk: remove prohibited sleep operation

15 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 31 Jul 2009 19:09:57 +0000 (12:09 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clocksource: Save mult_orig in clocksource_disable()

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
Linus Torvalds [Fri, 31 Jul 2009 19:09:22 +0000 (12:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: orphan subsystem
  imxmmc: Remove unnecessary semicolons
  cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG
  sdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG
  lib/scatterlist: add a flags to signalize mapping direction

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Fri, 31 Jul 2009 19:09:02 +0000 (12:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: sound/aoa: Add kmalloc NULL tests
  ALSA: hda - Increase PCM stream name buf in patch_realtek.c
  sound: mpu401.c: Buffer overflow
  sound: aedsp16: Buffer overflow
  ALSA: hda: fix out-of-bound hdmi_eld.sad[] write
  ALSA: hda - Add quirk for Dell Studio 1555

15 years agoclocksource: Save mult_orig in clocksource_disable()
Magnus Damm [Tue, 28 Jul 2009 21:09:55 +0000 (14:09 -0700)]
clocksource: Save mult_orig in clocksource_disable()

To fix the common case where ->enable() does not set up
mult, make sure mult_orig is saved in mult on disable.

Also add comments to explain why we do this.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: johnstul@us.ibm.com
Cc: lethal@linux-sh.org
Cc: akpm@linux-foundation.org
LKML-Reference: <20090618152432.10136.9932.sendpatchset@rx1.opensource.se>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
15 years agommc: orphan subsystem
Pierre Ossman [Fri, 31 Jul 2009 10:27:28 +0000 (12:27 +0200)]
mmc: orphan subsystem

I do not have the time to take care of this, so remove myself as
maintainer.

Signed-off-by: Pierre Ossman <pierre@ossman.eu>
15 years agoimxmmc: Remove unnecessary semicolons
Joe Perches [Sun, 28 Jun 2009 16:26:31 +0000 (09:26 -0700)]
imxmmc: Remove unnecessary semicolons

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
15 years agocb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG
Sebastian Andrzej Siewior [Mon, 22 Jun 2009 07:18:05 +0000 (09:18 +0200)]
cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG

the code allready uses flush_kernel_dcache_page(). This patch updates the
driver to the recent sg API changes which require that either SG_MITER_TO_SG
or SG_MITER_FROM_SG is set. SG_MITER_TO_SG calls flush_kernel_dcache_page()
in sg_mitter_stop()

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
15 years agosdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG
Sebastian Andrzej Siewior [Thu, 18 Jun 2009 07:33:32 +0000 (09:33 +0200)]
sdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG

so the page will be flushed on unmap on ARCH which need it.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
15 years agolib/scatterlist: add a flags to signalize mapping direction
Sebastian Andrzej Siewior [Thu, 18 Jun 2009 08:19:12 +0000 (10:19 +0200)]
lib/scatterlist: add a flags to signalize mapping direction

sg_miter_start() is currently unaware of the direction of the copy
process (to or from the scatter list). It is important to know the
direction because the page has to be flushed in case the data written
is seen on a different mapping in user land on cache incoherent
architectures.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
15 years agoMerge branch 'fix/oss' into for-linus
Takashi Iwai [Fri, 31 Jul 2009 08:17:45 +0000 (10:17 +0200)]
Merge branch 'fix/oss' into for-linus

* fix/oss:
  sound: mpu401.c: Buffer overflow
  sound: aedsp16: Buffer overflow

15 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Fri, 31 Jul 2009 08:17:44 +0000 (10:17 +0200)]
Merge branch 'fix/misc' into for-linus

* fix/misc:
  ALSA: sound/aoa: Add kmalloc NULL tests

15 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Fri, 31 Jul 2009 08:17:42 +0000 (10:17 +0200)]
Merge branch 'fix/hda' into for-linus

* fix/hda:
  ALSA: hda - Increase PCM stream name buf in patch_realtek.c
  ALSA: hda: fix out-of-bound hdmi_eld.sad[] write
  ALSA: hda - Add quirk for Dell Studio 1555

15 years agoALSA: sound/aoa: Add kmalloc NULL tests
Julia Lawall [Fri, 31 Jul 2009 06:32:03 +0000 (08:32 +0200)]
ALSA: sound/aoa: Add kmalloc NULL tests

Check that the result of kzalloc is not NULL before a dereference.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
    when != x != NULL
    when != (x || ...)
(
kfree(x)
|
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Increase PCM stream name buf in patch_realtek.c
Takashi Iwai [Fri, 31 Jul 2009 08:05:11 +0000 (10:05 +0200)]
ALSA: hda - Increase PCM stream name buf in patch_realtek.c

The name buf with size 16 is too short for some codec names, e.g.
truncated like "ALC861-VD Analo".  Now the size is doubled.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoio context: fix ref counting
Li Zefan [Fri, 31 Jul 2009 06:55:48 +0000 (08:55 +0200)]
io context: fix ref counting

Commit d9c7d394a8ebacb60097b192939ae9f15235225e
("block: prevent possible io_context->refcount overflow") mistakenly
changed atomic_inc(&ioc->nr_tasks) to atomic_long_inc(&ioc->refcount).

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoxfs: bump up nr_to_write in xfs_vm_writepage
Eric Sandeen [Fri, 31 Jul 2009 05:02:17 +0000 (00:02 -0500)]
xfs: bump up nr_to_write in xfs_vm_writepage

VM calculation for nr_to_write seems off.  Bump it way
up, this gets simple streaming writes zippy again.
To be reviewed again after Jens' writeback changes.

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Cc: Chris Mason <chris.mason@oracle.com>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
15 years agoxfs: reduce bmv_count in xfs_vn_fiemap
Eric Sandeen [Mon, 27 Jul 2009 02:52:01 +0000 (21:52 -0500)]
xfs: reduce bmv_count in xfs_vn_fiemap

commit 6321e3ed2acf3ee9643cdd403e1c88605d7944ba caused
the full bmv_count's worth of getbmapx structures to get
allocated; telling it to do MAXEXTNUM was a bit insane,
resulting in ENOMEM every time.

Chop it down to something reasonable, the number of slots
in the caller's input buffer.  If this is too large the
caller may get ENOMEM but the reason should not be a
mystery, and they can try again with something smaller.

We add 1 to the value because in the normal getbmap
world, bmv_count includes the header and xfs_getbmap does:

        nex = bmv->bmv_count - 1;
        if (nex <= 0)
                return XFS_ERROR(EINVAL);

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Olaf Weber <olaf@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
15 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 30 Jul 2009 23:46:58 +0000 (16:46 -0700)]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing/stat: Fix seqfile memory leak
  function-graph: Fix seqfile memory leak
  trace_stack: Fix seqfile memory leak
  profile: Suppress warning about large allocations when profile=1 is specified

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Thu, 30 Jul 2009 23:46:48 +0000 (16:46 -0700)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: be more polite in the async caching threads
  Btrfs: preserve commit_root for async caching

15 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
Linus Torvalds [Thu, 30 Jul 2009 23:46:31 +0000 (16:46 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/djbw/async_tx

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  dmaengine: at_hdmac: add DMA slave transfers
  dmaengine: at_hdmac: new driver for the Atmel AHB DMA Controller
  dmaengine: dmatest: correct thread_count while using multiple thread per channel
  dmaengine: dmatest: add a maximum number of test iterations
  drivers/dma: Remove unnecessary semicolons
  drivers/dma/fsldma.c: Remove unnecessary semicolons
  dmaengine: move HIGHMEM64G restriction to ASYNC_TX_DMA
  fsldma: do not clear bandwidth control bits on the 83xx controller
  fsldma: enable external start for the 83xx controller
  fsldma: use PCI Read Multiple command

15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Thu, 30 Jul 2009 23:46:17 +0000 (16:46 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-udf-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
  udf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks

15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Thu, 30 Jul 2009 23:46:06 +0000 (16:46 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-quota-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6:
  quota: Silence lockdep on quota_on

15 years agoMerge git://git.infradead.org/users/cbou/battery-2.6.31
Linus Torvalds [Thu, 30 Jul 2009 23:45:53 +0000 (16:45 -0700)]
Merge git://git.infradead.org/users/cbou/battery-2.6.31

* git://git.infradead.org/users/cbou/battery-2.6.31:
  Add ds2782 battery gas gauge driver
  olpc_battery: Ensure that the TRICKLE bit is checked
  olpc_battery: Fix up eeprom read function

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Thu, 30 Jul 2009 23:45:37 +0000 (16:45 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: remove dcache entries for remote deleted inodes
  GFS2: Fix incorrent statfs consistency check
  GFS2: Don't put unlikely reclaim candidates on the reclaim list.
  GFS2: Don't try and dealloc own inode
  GFS2: Fix panic in glock memory shrinker
  GFS2: keep statfs info in sync on grows
  GFS2: Shrink the shrinker

15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Thu, 30 Jul 2009 23:45:20 +0000 (16:45 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
  powerpc/86xx: Update GE Fanuc sbc310 default configuration
  powerpc/86xx: Update defconfig for GE Fanuc's PPC9A
  cpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c
  powerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards
  powerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards
  powerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards
  powerpc/mm: Fix SMP issue with MMU context handling code

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
Linus Torvalds [Thu, 30 Jul 2009 23:45:03 +0000 (16:45 -0700)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  lguest and virtio: cleanup struct definitions to Linux style.
  lguest: update commentry
  lguest: fix comment style
  virtio: refactor find_vqs
  virtio: delete vq from list
  virtio: fix memory leak on device removal
  lguest: fix descriptor corruption in example launcher
  lguest: dereferencing freed mem in add_eventfd()

15 years agokprobes: Use kernel_text_address() for checking probe address
Masami Hiramatsu [Tue, 28 Jul 2009 23:47:23 +0000 (19:47 -0400)]
kprobes: Use kernel_text_address() for checking probe address

Use kernel_text_address() for checking probe address instead of
__kernel_text_address(), because __kernel_text_address() returns true
for init functions even after relaseing those functions.

That will hit a BUG() in text_poke().

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoAlan doesn't want to maintain tty code any more
Linus Torvalds [Thu, 30 Jul 2009 23:40:37 +0000 (16:40 -0700)]
Alan doesn't want to maintain tty code any more

Not that anybody can blame him.  It's a morass.  But hey, it's way
better than it _used_ to be, though, so thanks for all the fish.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoquota: Silence lockdep on quota_on
Jan Kara [Wed, 22 Jul 2009 16:12:17 +0000 (18:12 +0200)]
quota: Silence lockdep on quota_on

Commit d01730d74d2b0155da50d44555001706294014f7 didn't completely fix
the problem since we still take dqio_mutex and i_mutex in the wrong
order. Move taking of i_mutex further down (luckily it's needed only
for updating inode flags) below where dqio_mutex is taken.

Tested-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
15 years agoudf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks
Jan Kara [Tue, 14 Jul 2009 17:30:23 +0000 (19:30 +0200)]
udf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks

VAT inode is located in the last block recorded block of the medium. When the
drive errorneously reports number of recorded blocks, we failed to load the VAT
inode and thus mount the medium. This patch makes kernel try to read VAT inode
from the last block of the device if it is different from the last recorded
block.

Signed-off-by: Jan Kara <jack@suse.cz>
15 years agoBtrfs: be more polite in the async caching threads
Chris Mason [Thu, 30 Jul 2009 14:04:48 +0000 (10:04 -0400)]
Btrfs: be more polite in the async caching threads

The semaphore used by the async caching threads can prevent a
transaction commit, which can make the FS appear to stall.  This
releases the semaphore more often when a transaction commit is
in progress.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
15 years agoBtrfs: preserve commit_root for async caching
Yan Zheng [Thu, 30 Jul 2009 13:40:40 +0000 (09:40 -0400)]
Btrfs: preserve commit_root for async caching

The async block group caching code uses the commit_root pointer
to get a stable version of the extent allocation tree for scanning.
This copy of the tree root isn't going to change and it significantly
reduces the complexity of the scanning code.

During a commit, we have a loop where we update the extent allocation
tree root.  We need to loop because updating the root pointer in
the tree of tree roots may allocate blocks which may change the
extent allocation tree.

Right now the commit_root pointer is changed inside this loop.  It
is more correct to change the commit_root pointer only after all the
looping is done.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
15 years agoGFS2: remove dcache entries for remote deleted inodes
Benjamin Marzinski [Thu, 23 Jul 2009 23:52:34 +0000 (18:52 -0500)]
GFS2: remove dcache entries for remote deleted inodes

When a file is deleted from a gfs2 filesystem on one node, a dcache
entry for it may still exist on other nodes in the cluster. If this
happens, gfs2 will be unable to free this file on disk. Because of this,
it's possible to have a gfs2 filesystem with no files on it and no free
space. With this patch, when a node receives a callback notifying it
that the file is being deleted on another node, it schedules a new
workqueue thread to remove the file's dcache entry.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix incorrent statfs consistency check
Benjamin Marzinski [Fri, 10 Jul 2009 23:13:26 +0000 (18:13 -0500)]
GFS2: Fix incorrent statfs consistency check

Since both linked and unlinked inodes are counted by rgd->rd_dinodes, It
makes no sense to count them with the used data blocks (first check that
I changed), it makes sense to count them with the linked inodes (second
check), and it makes no sense to care if there are more unlinked inodes
than linked ones. This fixes these errors.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Don't put unlikely reclaim candidates on the reclaim list.
Benjamin Marzinski [Fri, 10 Jul 2009 23:04:24 +0000 (18:04 -0500)]
GFS2: Don't put unlikely reclaim candidates on the reclaim list.

GFS2 was placing far too many glocks on the reclaim list that were not good
candidates for freeing up from cache.  These locks would sit there and
repeatedly get scanned to see if they could be reclaimed, wasting a lot
of time when there was memory pressure. This fix does more checks on the
locks to see if they are actually likely to be removable from cache.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Don't try and dealloc own inode
Steven Whitehouse [Fri, 10 Jul 2009 20:13:38 +0000 (21:13 +0100)]
GFS2: Don't try and dealloc own inode

When searching for unlinked, but still allocated inodes during block
allocation, avoid the block relating to the inode that is doing the
allocation. This fixes a hang caused when an unlinked, but still
open, inode tries to allocate some more blocks and lands up
finding itself during the search for deallocatable inodes.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix panic in glock memory shrinker
Benjamin Marzinski [Tue, 30 Jun 2009 18:51:11 +0000 (13:51 -0500)]
GFS2: Fix panic in glock memory shrinker

It is possible for gfs2_shrink_glock_memory() to check a glock for
demotion
that's in the process of being freed by gfs2_glock_put().  In this case,
gfs2_shrink_glock_memory() will acquire a new reference to this glock,
and
then try to free the glock itself when it drops the refernce.  To solve
this, gfs2_shrink_glock_memory() just needs to check if the glock is in
the process of being freed, and if so skip it without ever unlocking the
lru_lock.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Acked-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: keep statfs info in sync on grows
Benjamin Marzinski [Thu, 25 Jun 2009 20:09:51 +0000 (15:09 -0500)]
GFS2: keep statfs info in sync on grows

GFS2 wasn't syncing its statfs info on grows.  This causes a problem
when you grow the filesystem on multiple nodes.  GFS2 would calculate
the new space based on the resource groups (which are always current),
and then assume that the filesystem had grown the from the existing
statfs size.  If you grew the filesystem on two different nodes in a
short time, the second node wouldn't see the statfs size change from the
first node, and would assume that it was grown by a larger amount than
it was.  When all these changes were synced out, the total fileystem
size would be incorrect (the first grow would be counted twice).

This patch syncs makes GFS2 read in the statfs changes from disk before
a grow, and write them out after the grow, while the master statfs inode
is locked.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Shrink the shrinker
Steven Whitehouse [Thu, 25 Jun 2009 15:30:26 +0000 (16:30 +0100)]
GFS2: Shrink the shrinker

This patch removes some of the special cases that the shrinker
was trying to deal with. As a result we leave fewer items on
the list and none at all which cannot be demoted. This makes
the list scanning more efficient and solves some issues seen
with large numbers of inodes.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agolguest and virtio: cleanup struct definitions to Linux style.
Rusty Russell [Thu, 30 Jul 2009 22:03:46 +0000 (16:03 -0600)]
lguest and virtio: cleanup struct definitions to Linux style.

I've been doing this for years, and akpm picked me up on it about 12
months ago.  lguest partly serves as example code, so let's do it Right.

Also, remove two unused fields in struct vblk_info in the example launcher.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
15 years agolguest: update commentry
Rusty Russell [Thu, 30 Jul 2009 22:03:45 +0000 (16:03 -0600)]
lguest: update commentry

Every so often, after code shuffles, I need to go through and unbitrot
the Lguest Journey (see drivers/lguest/README).  Since we now use RCU in
a simple form in one place I took the opportunity to expand that explanation.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
15 years agolguest: fix comment style
Rusty Russell [Thu, 30 Jul 2009 22:03:45 +0000 (16:03 -0600)]
lguest: fix comment style

I don't really notice it (except to begrudge the extra vertical
space), but Ingo does.  And he pointed out that one excuse of lguest
is as a teaching tool, it should set a good example.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
15 years agovirtio: refactor find_vqs
Michael S. Tsirkin [Sun, 26 Jul 2009 12:48:08 +0000 (15:48 +0300)]
virtio: refactor find_vqs

This refactors find_vqs, making it more readable and robust, and fixing
two regressions from 2.6.30:
- double free_irq causing BUG_ON on device removal
- probe failure when vq can't be assigned to msi-x vector
  (reported on old host kernels)

Tested-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agovirtio: delete vq from list
Michael S. Tsirkin [Sun, 26 Jul 2009 12:48:01 +0000 (15:48 +0300)]
virtio: delete vq from list

This makes delete vq the reverse of find vq.
This is required to make it possible to retry find_vqs
after a failure, otherwise the list gets corrupted.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agovirtio: fix memory leak on device removal
Michael S. Tsirkin [Thu, 23 Jul 2009 11:57:37 +0000 (14:57 +0300)]
virtio: fix memory leak on device removal

Make vp_free_vectors do the reverse of vq_request_vectors.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agolguest: fix descriptor corruption in example launcher
Rusty Russell [Thu, 30 Jul 2009 22:03:43 +0000 (16:03 -0600)]
lguest: fix descriptor corruption in example launcher

1d589bb16b825b3a7b4edd34d997f1f1f953033d "Add serial number support
for virtio_blk, V4a" extended 'struct virtio_blk_config' to 536 bytes.
Lguest and S/390 both use an 8 bit value for the feature length, and
this change broke them (if the code is naive).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: John Cooper <john.cooper@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
15 years agolguest: dereferencing freed mem in add_eventfd()
Dan Carpenter [Sun, 19 Jul 2009 11:46:09 +0000 (14:46 +0300)]
lguest: dereferencing freed mem in add_eventfd()

"new" was freed and then dereferenced.  Also the return value wasn't being
used so I modified the caller as well.

Compile tested only.  Found by smatch (http://repo.or.cz/w/smatch.git).

regards,
dan carpenter

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agopowerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
Kumar Gala [Thu, 30 Jul 2009 04:34:01 +0000 (23:34 -0500)]
powerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agopowerpc/86xx: Update GE Fanuc sbc310 default configuration
Martyn Welch [Thu, 2 Jul 2009 14:18:44 +0000 (15:18 +0100)]
powerpc/86xx: Update GE Fanuc sbc310 default configuration

General update of defconfig including the following notable changes:
 - Enable Highmem support.
 - Support for PCMCIA based daughter card.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agopowerpc/86xx: Update defconfig for GE Fanuc's PPC9A
Martyn Welch [Thu, 2 Jul 2009 14:18:35 +0000 (15:18 +0100)]
powerpc/86xx: Update defconfig for GE Fanuc's PPC9A

General update of defconfig including the following notable changes:
 - Enable GPIO access via sysfs on GE Fanuc's PPC9A.
 - Enable Highmem support.
 - Support for PCMCIA based daughter card.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agocpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c
Mark Ware [Mon, 20 Jul 2009 11:51:03 +0000 (21:51 +1000)]
cpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c

This is another alloc_bootmem() -> kzalloc() change, this time to
fix the non-fatal badness caused when booting with a cpm2_uart console.

Signed-off-by: Mark Ware <mware@elphinstone.net>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agopowerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards
Anton Vorontsov [Mon, 20 Jul 2009 21:36:43 +0000 (01:36 +0400)]
powerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards

U-Boot maps PCI IO at 0xe0300000, while current dts files specify
0xe2000000. This leads to the following oops with CONFIG_8139TOO_PIO=y.

8139too Fast Ethernet driver 0.9.28
Machine check in kernel mode.
Caused by (from SRR1=41000): Transfer error ack signal
Oops: Machine check, sig: 7 [#1]
MPC837x RDB
[...]
NIP [00000900] 0x900
LR [c0439df8] rtl8139_init_board+0x238/0x524
Call Trace:
[cf831d90] [c0439dcc] rtl8139_init_board+0x20c/0x524 (unreliable)
[cf831de0] [c043a15c] rtl8139_init_one+0x78/0x65c
[cf831e40] [c0235250] pci_call_probe+0x20/0x30
[...]

This patch fixes the issue by specifying the correct PCI IO base
address.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agopowerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards
Anton Vorontsov [Wed, 1 Jul 2009 17:39:25 +0000 (21:39 +0400)]
powerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards

Sometimes (e.g. when there are no UEMs attached to a board)
fsl_pq_mdio_find_free() fails to find a spare address for a TBI PHY,
this is because get_phy_id() returns bogus 0x0000ffff values
(0xffffffff is expected), and therefore mdio bus probing fails with
the following message:

  fsl-pq_mdio: probe of e0082120.mdio failed with error -16

And obviously ethernet doesn't work after this.

This patch solves the problem by adding tbi-phy node into mdio node,
so that we won't scan for spare addresses, we'll just use a fixed one.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agopowerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards
Anton Vorontsov [Wed, 24 Jun 2009 16:30:28 +0000 (20:30 +0400)]
powerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards

Linux isn't able to detect link changes on ethernet ports that were
used by U-Boot. This is because U-Boot wrongly clears interrupt
polarity bit (INTPOL, 0x400) in the extended status register (EXT_SR,
0x1b) of Marvell PHYs.

There is no easy way for PHY drivers to know IRQ line polarity (we
could extract it from the device tree and pass it to phydevs, but
that'll be quite a lot of work), so for now just reset the PHYs to
their default states.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agopowerpc/mm: Fix SMP issue with MMU context handling code
Kumar Gala [Thu, 30 Jul 2009 04:04:25 +0000 (23:04 -0500)]
powerpc/mm: Fix SMP issue with MMU context handling code

In switch_mmu_context() if we call steal_context_smp() to get a context
to use we shouldn't fall through and than call steal_context_up().  Doing
so can be problematic in that the 'mm' that steal_context_up() ends up
using will not get marked dirty in the stale_map[] for other CPUs that
might have used that mm.  Thus we could end up with stale TLB entries in
the other CPUs that can cause all kinda of havoc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
15 years agoMerge branch 'i2c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux
Linus Torvalds [Thu, 30 Jul 2009 02:39:22 +0000 (19:39 -0700)]
Merge branch 'i2c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux

* 'i2c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux:
  i2c-omap: OMAP3430 Silicon Errata 1.153
  i2c-omap: In case of a NACK|ARDY|AL return from the ISR
  i2c-omap: Bug in reading the RXSTAT/TXSTAT values from the I2C_BUFFSTAT register
  i2c-sh_mobile: change module_init() to subsys_initcall()
  i2c: strncpy does not null terminate string
  i2c-s3c2410: s3c24xx_i2c_init: don't clobber IICLC value

15 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Thu, 30 Jul 2009 02:15:18 +0000 (19:15 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Hibernate: Replace bdget call with simple atomic_inc of i_count
  PM / ACPI: HP G7000 Notebook needs a SCI_EN resume quirk

15 years agoMAINTAINERS: update HP Jornada 700-series and Epson s1d13xxxfb support
Kristoffer Ericson [Wed, 29 Jul 2009 22:04:32 +0000 (15:04 -0700)]
MAINTAINERS: update HP Jornada 700-series and Epson s1d13xxxfb support

Add the relevant git repositories and affected files to the maintainership
of HP Jornada 700-series and Epson s1d13xxxfb support.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: finish off the email address coalescing
Joe Perches [Wed, 29 Jul 2009 22:04:32 +0000 (15:04 -0700)]
MAINTAINERS: finish off the email address coalescing

Add some touchups to the sample record.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: coalesce name and email address lines
Joe Perches [Wed, 29 Jul 2009 22:04:30 +0000 (15:04 -0700)]
MAINTAINERS: coalesce name and email address lines

Switch the MAINTAINERS email address format from

P: Linus Torvalds
M: torvalds@linux-foundation.org

to

M: Linus Torvalds <torvalds@linux-foundation.org>

Mainly to ease the copy-n-pasting of maitnainer addresses into email clients.

The script to perform this operation:

#! /bin/sh
#
# Change MAINTAINERS from
# P: name
# M: address
# to:
# M: name <address>
#
# Integrate P: and M: lines
#
perl -i -e 'local $/; while(<>) { s@P: ([^\n]+)\nM: ([^\n]+)\n@M: \1 <\2>\n@g; print; }' MAINTAINERS
#
# Quote names with periods, commas and parentheses
#
sed -r -i -e "s/^M: (.+)([\.,'\(])(.*) </M: \"\1\2\3\" </g" MAINTAINERS

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-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 agoget_maintainerpl-add-git-min-percent-option-fix
Joe Perches [Wed, 29 Jul 2009 22:04:29 +0000 (15:04 -0700)]
get_maintainerpl-add-git-min-percent-option-fix

Allow an option to control the minimum percentage of sign-offs required
before being considered a maintainer.

git-min-percent has a default value of 5

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoget_maintainer.pl: Add git-min-percent option
Joe Perches [Wed, 29 Jul 2009 22:04:28 +0000 (15:04 -0700)]
get_maintainer.pl: Add git-min-percent option

Allow an option to control the minimum percentage of sign-offs required
before being considered a maintainer.

git-min-percent has a default value of 5

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoscripts/get_maintainer.pl: Add -f directory use
Joe Perches [Wed, 29 Jul 2009 22:04:28 +0000 (15:04 -0700)]
scripts/get_maintainer.pl: Add -f directory use

Don't require a specific file in a directory to be tested.

Also Arnd Bergmann pointed out that the MAINTAINERS pattern requirement
that directory patterns have a trailing slash was unnecessary and was
likely to be error prone.  Removed that requirement.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Scott Murray is no longer with SomaNetworks
Joe Perches [Wed, 29 Jul 2009 22:04:27 +0000 (15:04 -0700)]
MAINTAINERS: Scott Murray is no longer with SomaNetworks

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: QLOGIC QLA3XXX - Add Ron Mercer email address
Joe Perches [Wed, 29 Jul 2009 22:04:27 +0000 (15:04 -0700)]
MAINTAINERS: QLOGIC QLA3XXX - Add Ron Mercer email address

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: QLOGIC QLA2XXX - add Andrew Vasquez email address
Joe Perches [Wed, 29 Jul 2009 22:04:26 +0000 (15:04 -0700)]
MAINTAINERS: QLOGIC QLA2XXX - add Andrew Vasquez email address

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Remove CS461x sound card section
Joe Perches [Wed, 29 Jul 2009 22:04:26 +0000 (15:04 -0700)]
MAINTAINERS: Remove CS461x sound card section

Thomas Woller's email address bounces
Nils Faerber isn't active

Added Thomas Woller to CREDITS, Nils already has an entry

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: INPUT: Add Dmitry's name to his email address
Joe Perches [Wed, 29 Jul 2009 22:04:25 +0000 (15:04 -0700)]
MAINTAINERS: INPUT: Add Dmitry's name to his email address

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: USB Serial Digi Acceleport: use separate P: for Al Borchers
Joe Perches [Wed, 29 Jul 2009 22:04:25 +0000 (15:04 -0700)]
MAINTAINERS: USB Serial Digi Acceleport: use separate P: for Al Borchers

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Add PPS patterns
Joe Perches [Wed, 29 Jul 2009 22:04:24 +0000 (15:04 -0700)]
MAINTAINERS: Add PPS patterns

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Update KERNEL JANITORS
Joe Perches [Wed, 29 Jul 2009 22:04:24 +0000 (15:04 -0700)]
MAINTAINERS: Update KERNEL JANITORS

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Move ARPD to CREDITS
Joe Perches [Wed, 29 Jul 2009 22:04:23 +0000 (15:04 -0700)]
MAINTAINERS: Move ARPD to CREDITS

Jonathan Layes is hard to find.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Remove L: linux-kernel@vger.kernel.org
Joe Perches [Wed, 29 Jul 2009 22:04:23 +0000 (15:04 -0700)]
MAINTAINERS: Remove L: linux-kernel@vger.

from sections that should not have them.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Use tabs in ACER ASPIRE ONE
Joe Perches [Wed, 29 Jul 2009 22:04:22 +0000 (15:04 -0700)]
MAINTAINERS: Use tabs in ACER ASPIRE ONE

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: QLGE 10Gb ETHERNET - pair P:/M: entries properly
Joe Perches [Wed, 29 Jul 2009 22:04:21 +0000 (15:04 -0700)]
MAINTAINERS: QLGE 10Gb ETHERNET - pair P:/M: entries properly

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: Remove ivtv-user lists, add CX18 url
Joe Perches [Wed, 29 Jul 2009 22:04:21 +0000 (15:04 -0700)]
MAINTAINERS: Remove ivtv-user lists, add CX18 url

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: IA64 - pair P:/M: entries properly
Joe Perches [Wed, 29 Jul 2009 22:04:20 +0000 (15:04 -0700)]
MAINTAINERS: IA64 - pair P:/M: entries properly

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agouio: mark uio.h functions __KERNEL__ only
Jiri Slaby [Wed, 29 Jul 2009 22:04:19 +0000 (15:04 -0700)]
uio: mark uio.h functions __KERNEL__ only

To avoid userspace build failures such as:

.../linux/uio.h:37: error: expected `=', `,', `;', `asm' or `__attribute__' before `iov_length'
.../linux/uio.h:47: error: expected declaration specifiers or `...' before `size_t'

move uio functions inside a __KERNEL__ block.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>