diff options
Diffstat (limited to 'arch/i386/kernel/cpu/intel.c')
| -rw-r--r-- | arch/i386/kernel/cpu/intel.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/intel.c b/arch/i386/kernel/cpu/intel.c index 5386b29bb5a..10afc645c54 100644 --- a/arch/i386/kernel/cpu/intel.c +++ b/arch/i386/kernel/cpu/intel.c @@ -122,6 +122,12 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) select_idle_routine(c); l2 = init_intel_cacheinfo(c); + if (c->cpuid_level > 9 ) { + unsigned eax = cpuid_eax(10); + /* Check for version and the number of counters */ + if ((eax & 0xff) && (((eax>>8) & 0xff) > 1)) + set_bit(X86_FEATURE_ARCH_PERFMON, c->x86_capability); + } /* SEP CPUID bug: Pentium Pro reports SEP but doesn't have it until model 3 mask 3 */ if ((c->x86<<8 | c->x86_model<<4 | c->x86_mask) < 0x633) |