linux-stable.git/include/linux/cpufreq.h, branch linux-2.6.24.y

[CPUFREQ] implement !CONFIG_CPU_FREQ stub for cpufreq_unregister_notifier()

2007-10-04T22:40:57+00:00

Callsites such as arch/powerpc/oprofile/op_model_cell.c are having to
open-code #ifdef CONFIG_CPU_FREQ only to be able to get at the full definition
of cpufreq_unregister_notifier(), because no empty stub is available for the
!CONFIG_CPU_FREQ case.  Let's provide one, to be able to remove such #ifdef's
from the rest of the kernel tree -- those will come in a subsequent patch.

Signed-off-by: Satyam Sharma 
Signed-off-by: Andrew Morton 
Signed-off-by: Dave Jones

[CPUFREQ] Only check for transition latency on problematic governors (kconfig fix)

2007-10-04T22:40:57+00:00

Cc: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Dave Jones

[CPUFREQ] allow ondemand and conservative cpufreq governors to be used as default

2007-10-04T22:40:57+00:00

Depending on the transition latency of the HW for cpufreq switches, the
ondemand or conservative governor cannot be used with certain cpufreq
drivers.  Still the ondemand should be the default governor on a wide range
of systems.  This patch allows this and lets the governor fallback to the
performance governor at cpufreq driver load time, if the driver does not
support fast enough frequency switching.

Main benefit is that on e.g.  installation or other systems without
userspace support a working dynamic cpufreq support can be achieved on most
systems by simply loading the cpufreq driver.  This is especially essential
for recent x86(_64) laptop hardware which may rely on working dynamic
cpufreq OS support.

Signed-off-by: Thomas Renninger 
Signed-off-by: Venkatesh Pallipadi 
Cc: Russell King 
Cc: Bryan Wu 
Cc: Andi Kleen 
Cc: "Luck, Tony" 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mundt 
Cc: "David S. Miller" 
Signed-off-by: Andrew Morton 
Signed-off-by: Dave Jones

Revert "[PATCH] x86-64: fix x86_64-mm-sched-clock-share"

2007-09-26T22:52:17+00:00

This reverts commit 184c44d2049c4db7ef6ec65794546954da2c6a0e.

As noted by Dave Jones:
   "Linus, please revert the above cset.  It doesn't seem to be
    necessary (it was added to fix a miscompile in 'make allnoconfig'
    which doesn't seem to be repeatable with it reverted) and actively
   breaks the ARM SA1100 framebuffer driver."

Requested-by: Dave Jones 
Cc: Russell King 
Cc: Andrew Morton 
Cc: Andi Kleen 
Signed-off-by: Linus Torvalds

Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6

2007-05-05T21:55:20+00:00

* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
  [PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
  [PATCH] i386: type may be unused
  [PATCH] i386: Some additional chipset register values validation.
  [PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
  [PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
  [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
  [PATCH] i386: white space fixes in i387.h
  [PATCH] i386: Drop noisy e820 debugging printks
  [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
  [PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
  [PATCH] x86-64: Share identical video.S between i386 and x86-64
  [PATCH] x86-64: Remove CONFIG_REORDER
  [PATCH] x86-64: Print type and size correctly for unknown compat ioctls
  [PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
  [PATCH] i386: Little cleanups in smpboot.c
  [PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
  [PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
  [PATCH] i386: Add X86_FEATURE_RDTSCP
  [PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
  [PATCH] i386: Implement alternative_io for i386
  ...

Fix up trivial conflict in include/linux/highmem.h manually.

Signed-off-by: Linus Torvalds

[PATCH] x86-64: fix x86_64-mm-sched-clock-share

2007-05-02T17:27:08+00:00

Fix for the following patch. Provide dummy cpufreq functions when
CPUFREQ is not compiled in.

Cc: Andi Kleen 
Cc: Dave Jones 
Signed-off-by: Andrew Morton 
Signed-off-by: Andi Kleen

[CPUFREQ] Remove deprecated /proc/acpi/processor/performance write support

2007-04-26T18:32:02+00:00

Remove deprecated /proc/acpi/processor/performance write support

Writing to /proc/acpi/processor/xy/performance interferes with sysfs
cpufreq interface. Also removes buggy cpufreq_set_policy exported symbol.

Signed-off-by: Thomas Renninger 
Signed-off-by: Dave Jones

Revert "[CPUFREQ] constify cpufreq_driver where possible."

2007-02-26T22:55:48+00:00

This reverts commit aeeddc1435c37fa3fc844f31d39c185b08de4158, which was
half-baked and broken.  It just resulted in compile errors, since
cpufreq_register_driver() still changes the 'driver_data' by setting
bits in the flags field.  So claiming it is 'const' _really_ doesn't
work.

Signed-off-by: Linus Torvalds

[CPUFREQ] constify cpufreq_driver where possible.

2007-02-23T00:08:27+00:00

Not all cases are possible due to ->flags being set at runtime
on some drivers.

Signed-off-by: Dave Jones

[CPUFREQ] Rewrite lock in cpufreq to eliminate cpufreq/hotplug related issues

2007-02-11T01:01:47+00:00

Yet another attempt to resolve cpufreq and hotplug locking issues.

Patchset has 3 patches:
* Rewrite the lock infrastructure of cpufreq using a per cpu rwsem.
* Minor restructuring of work callback in ondemand driver.
* Use the new cpufreq rwsem infrastructure in ondemand work.

This patch:

Convert policy->lock to rwsem and move it to per_cpu area.
This rwsem will protect against both changing/accessing policy
related parameters and CPU hot plug/unplug.

[malattia@linux.it: fix oops in kref_put()]
Cc: Gautham R Shenoy 
Signed-off-by: Venkatesh Pallipadi 
Cc: Gautham R Shenoy 
Signed-off-by: Mattia Dongili 
Signed-off-by: Andrew Morton 
Signed-off-by: Dave Jones