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authorAndi Kleen <ak@suse.de>2008-01-30 13:32:41 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:32:41 +0100
commitddb25f9ac1c4b4f9ba0bdacd7850a921a0c6886c (patch)
tree285a144b79d8d17a35c7cd22ab1adb2ef6bdd0e8 /drivers/usb
parent32c7553f824d0d76771404f0e11d6059f82e8de7 (diff)
x86: don't disable TSC in any C states on AMD Fam10h
The ACPI code currently disables TSC use in any C2 and C3 states. But the AMD Fam10h BKDG documents that the TSC will never stop in any C states when the CONSTANT_TSC bit is set. Make this disabling conditional on CONSTANT_TSC not set on AMD. I actually think this is true on Intel too for C2 states on CPUs with p-state invariant TSC, but this needs further discussions with Len to really confirm :-) So far it is only enabled on AMD. Cc: lenb@kernel.org Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/usb')
0 files changed, 0 insertions, 0 deletions