kernel/linux.git/drivers/acpi/processor_core.c, branch linux-2.6.22.y

ACPI: disable lower idle C-states across suspend/resume

2007-11-02T15:44:08+00:00

changeset b04e7bdb984e3b7f62fb7f44146a529f88cc7639 from mainline. device_suspend() calls ACPI suspend functions, which seems to have undesired side effects on lower idle C-states. It took me some time to realize that especially the VAIO BIOSes (both Andrews jinxed UP and my elfstruck SMP one) show this effect. I'm quite sure that other bug reports against suspend/resume about turning the system into a brick have the same root cause. After fishing in the dark for quite some time, I realized that removing the ACPI processor module before suspend (this removes the lower C-state functionality) made the problem disappear. Interestingly enough the propability of having a bricked box is influenced by various factors (interrupts, size of the ram image, ...). Even adding a bunch of printks in the wrong places made the problem go away. The previous periodic tick implementation simply pampered over the problem, which explains why the dyntick / clockevents changes made this more prominent. We avoid complex functionality during the boot process and we have to do the same during suspend/resume. It is a similar scenario and equaly fragile. Add suspend / resume functions to the ACPI processor code and disable the lower idle C-states across suspend/resume. Fall back to the default idle implementation (halt) instead. Signed-off-by: Thomas Gleixner Tested-by: Andrew Morton Cc: Len Brown Cc: Venkatesh Pallipadi Cc: Rafael J. Wysocki Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

ACPI: Remove duplicate definitions for _STA bits

2007-04-25T18:17:39+00:00

No need to duplicate the existing definitions in include/acpi/actypes.h. syntax only -- no functional change. Signed-off-by: Bjorn Helgaas Signed-off-by: Andrew Morton Signed-off-by: Len Brown

Pull fluff into release branch

2007-02-17T03:10:32+00:00

Conflicts: arch/x86_64/pci/mmconfig.c drivers/acpi/bay.c Signed-off-by: Len Brown

ACPI: Fix sparse warnings

2007-02-16T03:19:07+00:00

Use NULL for pointers drivers/acpi/osl.c:208:10: warning: Using plain integer as NULL pointer drivers/acpi/tables/tbxface.c:411:49: warning: Using plain integer as NULL pointer drivers/acpi/processor_core.c:1008:10: warning: Using plain integer as NULL pointer Signed-off-by: Randy Dunlap Signed-off-by: Len Brown

ACPI: delete extra #defines in /drivers/acpi/ drivers

2007-02-13T04:50:52+00:00

Cosmetic only. Except in a single case, #define ACPI_*_DRIVER_NAME were invoked 0 or 1 times. Signed-off-by: Len Brown

ACPI: fix acpi_driver.name usage

2007-02-13T04:33:40+00:00

It was erroneously used as a description rather than a name. ie. turn this: lenb@se7525gp2:/sys> ls bus/acpi/drivers ACPI AC Adapter Driver ACPI Embedded Controller Driver ACPI Power Resource Driver ACPI Battery Driver ACPI Fan Driver ACPI Processor Driver ACPI Button Driver ACPI PCI Interrupt Link Driver ACPI Thermal Zone Driver ACPI container driver ACPI PCI Root Bridge Driver hpet into this: lenb@se7525gp2:~> ls /sys/bus/acpi/drivers ac battery button container ec fan hpet pci_link pci_root power processor thermal Signed-off-by: Len Brown

ACPI: clean up ACPI_MODULE_NAME() use

2007-02-13T03:42:12+00:00

cosmetic only Make "module name" actually match the file name. Invoke with ';' as leaving it off confuses Lindent and gcc doesn't care. Fix indentation where Lindent did get confused. Signed-off-by: Len Brown

ACPI: IA64: fix calculation of apic_id

2007-02-12T15:51:23+00:00

fix regression from recent table re-write Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown

Pull sysfs into test branch

2007-02-03T06:14:35+00:00

Conflicts: Documentation/feature-removal-schedule.txt include/acpi/acpi_drivers.h Signed-off-by: Len Brown

ACPICA: Allow processor to be declared with the Device() instead of Processor()

2007-02-03T02:14:31+00:00

Allow processor to be declered with the Device(), such as: Device(CPU1234) { Name(_HID, "ACPI007") Name(_UID, 1234) } Signed-off-by: Len Brown