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author | 2009-04-06 18:51:29 -0700 | |
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committer | 2009-04-07 18:17:51 -0400 | |
commit | db954b5898dd3ef3ef93f4144158ea8f97deb058 (patch) | |
tree | 781b62baa5aa262fca99198ba326e5e9cc44b26a /include/acpi | |
parent | Linux 2.6.30-rc1 (diff) | |
download | linux-db954b5898dd3ef3ef93f4144158ea8f97deb058.tar.gz linux-db954b5898dd3ef3ef93f4144158ea8f97deb058.tar.bz2 linux-db954b5898dd3ef3ef93f4144158ea8f97deb058.zip |
x86 ACPI: Add support for Always Running APIC timer
Add support for Always Running APIC timer, CPUID_0x6_EAX_Bit2.
This bit means the APIC timer continues to run even when CPU is
in deep C-states.
The advantage is that we can use LAPIC timer on these CPUs
always, and there is no need for "slow to read and program"
external timers (HPET/PIT) and the timer broadcast logic
and related code in C-state entry and exit.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
0 files changed, 0 insertions, 0 deletions