linux-toradex.git/kernel/power, branch v2.6.13-rc2

Merge Christoph's freeze cleanup patch

2005-06-26T00:16:53+00:00

[PATCH] Cleanup patch for process freezing

2005-06-26T00:10:13+00:00

1. Establish a simple API for process freezing defined in linux/include/sched.h:

   frozen(process)		Check for frozen process
   freezing(process)		Check if a process is being frozen
   freeze(process)		Tell a process to freeze (go to refrigerator)
   thaw_process(process)	Restart process
   frozen_process(process)	Process is frozen now

2. Remove all references to PF_FREEZE and PF_FROZEN from all
   kernel sources except sched.h

3. Fix numerous locations where try_to_freeze is manually done by a driver

4. Remove the argument that is no longer necessary from two function calls.

5. Some whitespace cleanup

6. Clear potential race in refrigerator (provides an open window of PF_FREEZE
   cleared before setting PF_FROZEN, recalc_sigpending does not check
   PF_FROZEN).

This patch does not address the problem of freeze_processes() violating the rule
that a task may only modify its own flags by setting PF_FREEZE. This is not clean
in an SMP environment. freeze(process) is therefore not SMP safe!

Signed-off-by: Christoph Lameter 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: only allow it when it makes sense

2005-06-25T23:24:34+00:00

Show swsuspend only on .config where it can compile.  I got this on PPC32 &&
SMP:

kernel/power/smp.c:24: error: storage size of `ctxt' isn't known

Also mark swsusp as no longer experimental.

Signed-off-by: Olaf Hering 
Signed-off-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: fix nr_copy_pages

2005-06-25T23:24:33+00:00

The following patch moves the recalculation of nr_copy_pages so that the right
number is used in the calculation of the size of memory and swap needed.

It prevents swsusp from attempting to suspend if there is not enough memory
and/or swap (which is unlikely anyway).

Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: cleanup whitespace

2005-06-25T23:24:33+00:00

The following patch cleans up whitespace in swsusp.c (a bit):

- removes any trailing whitespace

- adds spaces after if, for, for_each_pbe, for_each_zone etc., wherever
  necessary.

Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: kill unneccessary does_collide_order

2005-06-25T23:24:33+00:00

The following patch removes the unnecessary function does_collide_order().

This function is no longer necessary, as currently there are only 0-order
allocations in swsusp, and the use of it is confusing.

Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] suspend/resume SMP support

2005-06-25T23:24:32+00:00

Using CPU hotplug to support suspend/resume SMP.  Both S3 and S4 use
disable/enable_nonboot_cpus API.  The S4 part is based on Pavel's original S4
SMP patch.

Signed-off-by: Li Shaohua
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] make various thing static

2005-06-24T07:06:43+00:00

Another rollup of patches which give various symbols static scope

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] smp_processor_id() cleanup

2005-06-22T01:46:13+00:00

This patch implements a number of smp_processor_id() cleanup ideas that
Arjan van de Ven and I came up with.

The previous __smp_processor_id/_smp_processor_id/smp_processor_id API
spaghetti was hard to follow both on the implementational and on the
usage side.

Some of the complexity arose from picking wrong names, some of the
complexity comes from the fact that not all architectures defined
__smp_processor_id.

In the new code, there are two externally visible symbols:

 - smp_processor_id(): debug variant.

 - raw_smp_processor_id(): nondebug variant. Replaces all existing
   uses of _smp_processor_id() and __smp_processor_id(). Defined
   by every SMP architecture in include/asm-*/smp.h.

There is one new internal symbol, dependent on DEBUG_PREEMPT:

 - debug_smp_processor_id(): internal debug variant, mapped to
                             smp_processor_id().

Also, i moved debug_smp_processor_id() from lib/kernel_lock.c into a new
lib/smp_processor_id.c file.  All related comments got updated and/or
clarified.

I have build/boot tested the following 8 .config combinations on x86:

 {SMP,UP} x {PREEMPT,!PREEMPT} x {DEBUG_PREEMPT,!DEBUG_PREEMPT}

I have also build/boot tested x64 on UP/PREEMPT/DEBUG_PREEMPT.  (Other
architectures are untested, but should work just fine.)

Signed-off-by: Ingo Molnar 
Signed-off-by: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Driver Core: pm diagnostics update, check for errors

2005-05-17T21:54:54+00:00

This patch includes various tweaks in the messaging that appears during
system pm state transitions:

  * Warn about certain illegal calls in the device tree, like resuming
    child before parent or suspending parent before child.  This could
    happen easily enough through sysfs, or in some cases when drivers
    use device_pm_set_parent().

  * Be more consistent about dev_dbg() tracing ... do it for resume() and
    shutdown() too, and never if the driver doesn't have that method.

  * Say which type of system sleep state is being entered.

Except for the warnings, these only affect debug messaging.

Signed-off-by: David Brownell 
Acked-by: Pavel Machek 
Signed-off-by: Greg Kroah-Hartman