Len Brown 718be4aaf3 ACPI: skip checking BM_STS if the BIOS doesn't ask for it ... It turns out that there is a bit in the _CST for Intel FFH C3 that tells the OS if we should be checking BM_STS or not. Linux has been unconditionally checking BM_STS. If the chip-set is configured to enable BM_STS, it can retard or completely prevent entry into deep C-states -- as illustrated by turbostat: http://userweb.kernel.org/~lenb/acpi/utils/pmtools/turbostat/ ref: Intel Processor Vendor-Specific ACPI Interface Specification table 4 "_CST FFH GAS Field Encoding" Bit 1: Set to 1 if OSPM should use Bus Master avoidance for this C-state https://bugzilla.kernel.org/show_bug.cgi?id=15886 Signed-off-by: Len Brown <len.brown@intel.com>		2010-07-22 16:54:27 -04:00
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platform
acexcep.h
acnames.h
acoutput.h
acpi_bus.h
acpi_drivers.h
acpi_numa.h
acpi.h
acpiosxf.h
acpixf.h
acrestyp.h
actbl1.h
actbl2.h
actbl.h
actypes.h
apei.h
atomicio.h
button.h
container.h
hed.h
pdc_intel.h
processor.h	ACPI: skip checking BM_STS if the BIOS doesn't ask for it	2010-07-22 16:54:27 -04:00
reboot.h
video.h