kernel.git/drivers/acpi/processor_throttling.c, branch linux-2.6.31.y

acpi processor: remove superfluous warning message

2009-08-27T03:06:53Z

This failure is very common on many platforms. Handling it in the ACPI processor driver is enough, and we don't need a warning message unless CONFIG_ACPI_DEBUG is set. Based on a patch from Zhang Rui. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13389 Signed-off-by: Frans Pop Acked-by: Zhang Rui Cc: Len Brown Cc: "Rafael J. Wysocki" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ACPI processor: force throttling state when BIOS returns incorrect value

2009-08-27T03:06:53Z

If the BIOS reports an invalid throttling state (which seems to be fairly common after system boot), a reset is done to state T0. Because of a check in acpi_processor_get_throttling_ptc(), the reset never actually gets executed, which results in the error reoccurring on every access of for example /proc/acpi/processor/CPU0/throttling. Add a 'force' option to acpi_processor_set_throttling() to ensure the reset really takes effect. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13389 This patch, together with the next one, fixes a regression introduced in 2.6.30, listed on the regression list. They have been available for 2.5 months now in bugzilla, but have not been picked up, despite various reminders and without any reason given. Google shows that numerous people are hitting this issue. The issue is in itself relatively minor, but the bug in the code is clear. The patches have been in all my kernels and today testing has shown that throttling works correctly with the patches applied when the system overheats (http://bugzilla.kernel.org/show_bug.cgi?id=13918#c14). Signed-off-by: Frans Pop Acked-by: Zhang Rui Cc: Len Brown Cc: "Rafael J. Wysocki" Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ACPI processor: remove spurious newline from warning message

2009-05-30T01:26:26Z

Commit 4973b22a ("ACPI processor: reset the throttling state once it's invalid") introduced a new warning which prints a spurious newline. The ACPI_WARNING macro that is used already takes care of adding a newline, after adding ACPI_CA_VERSION to the message. Remove the newline to avoid the message getting split into two lines. Signed-off-by: Frans Pop Signed-off-by: Len Brown

ACPI processor: reset the throttling state once it's invalid

2009-05-16T03:21:54Z

If the BIOS hands us an invalid throttling state, write a valid state. http://bugzilla.kernel.org/show_bug.cgi?id=13259 Signed-off-by: Zhang Rui Tested-by: James Ettle Signed-off-by: Len Brown

ACPI processor: introduce module parameter processor.ignore_tpc

2009-05-16T03:21:43Z

Introduce module parameter processor.ignore_tpc. Some laptops are shipped with buggy _TPC, this module parameter is used to to disable the buggy support. http://bugzilla.kernel.org/show_bug.cgi?id=13259 Signed-off-by: Zhang Rui Tested-by: James Ettle Signed-off-by: Len Brown

Merge branch 'misc' into release

2009-04-05T05:52:07Z

ACPI: constify VFTs (1/2)

2009-04-04T03:14:40Z

Signed-off-by: Jan Engelhardt Signed-off-by: Len Brown

ACPI: get_throttling_state() cannot be larger than state_count

2009-04-03T16:05:14Z

Reported-by: Roel Kluin Acked-by: Zhao Yakui Signed-off-by: Len Brown

cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t

2009-01-03T18:15:40Z

Impact: Reduce memory usage, use new API. This is part of an effort to reduce structure sizes for machines configured with large NR_CPUS. cpumask_t gets replaced by cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or struct cpumask * (large NR_CPUS). (Changes to powernow-k* by .) Signed-off-by: Rusty Russell Signed-off-by: Mike Travis Signed-off-by: Ingo Molnar

ACPI: consolidate ACPI_*_COMPONENT definitions in acpi_drivers.h

2008-11-08T02:44:37Z

Move all the component definitions for drivers to a single shared place, include/acpi/acpi_drivers.h. Signed-off-by: Bjorn Helgaas Signed-off-by: Len Brown