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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-25 12:48:18 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-25 12:48:18 +0100 |
| commit | a3eeeefbf1cd1d142c52238cc19c75d14c3bc8d5 (patch) | |
| tree | 28eedba6d432e9d9d772962e6f92732aef1be065 /arch/x86/kernel/cpu/amd.c | |
| parent | 30cd324e9787ccc9a5ede59742d5409857550692 (diff) | |
| parent | 7e3cbc3f774f31ecd88a51edae3d9377f60a4c00 (diff) | |
Merge branch 'x86/tsc' into tracing/core
Merge it to resolve this incidental conflict between the BTS fixes/cleanups
and changes in x86/tsc:
Conflicts:
arch/x86/kernel/cpu/intel.c
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 8f1e31db2ad..7c878f6aa91 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -283,9 +283,14 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) { early_init_amd_mc(c); - /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */ - if (c->x86_power & (1<<8)) + /* + * c->x86_power is 8000_0007 edx. Bit 8 is TSC runs at constant rate + * with P/T states and does not stop in deep C-states + */ + if (c->x86_power & (1 << 8)) { set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); + set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC); + } #ifdef CONFIG_X86_64 set_cpu_cap(c, X86_FEATURE_SYSCALL32); |