From c43ca5091a374c1f6778bd7e4a39a5a10735a917 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Fri, 19 Apr 2013 16:34:28 -0500 Subject: perf/x86/amd: Add support for AMD NB and L2I "uncore" counters Add support for AMD Family 15h [and above] northbridge performance counters. MSRs 0xc0010240 ~ 0xc0010247 are shared across all cores that share a common northbridge. Add support for AMD Family 16h L2 performance counters. MSRs 0xc0010230 ~ 0xc0010237 are shared across all cores that share a common L2 cache. We do not enable counter overflow interrupts. Sampling mode and per-thread events are not supported. Signed-off-by: Jacob Shin Cc: Arnaldo Carvalho de Melo Cc: Stephane Eranian Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20130419213428.GA8229@jshin-Toonie Signed-off-by: Ingo Molnar --- arch/x86/include/asm/cpufeature.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/include/asm/cpufeature.h') diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 93fe929d1cee..ac10df72925b 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -168,6 +168,7 @@ #define X86_FEATURE_TOPOEXT (6*32+22) /* topology extensions CPUID leafs */ #define X86_FEATURE_PERFCTR_CORE (6*32+23) /* core performance counter extensions */ #define X86_FEATURE_PERFCTR_NB (6*32+24) /* NB performance counter extensions */ +#define X86_FEATURE_PERFCTR_L2 (6*32+28) /* L2 performance counter extensions */ /* * Auxiliary flags: Linux defined - For features scattered in various @@ -311,6 +312,7 @@ extern const char * const x86_power_flags[32]; #define cpu_has_pclmulqdq boot_cpu_has(X86_FEATURE_PCLMULQDQ) #define cpu_has_perfctr_core boot_cpu_has(X86_FEATURE_PERFCTR_CORE) #define cpu_has_perfctr_nb boot_cpu_has(X86_FEATURE_PERFCTR_NB) +#define cpu_has_perfctr_l2 boot_cpu_has(X86_FEATURE_PERFCTR_L2) #define cpu_has_cx8 boot_cpu_has(X86_FEATURE_CX8) #define cpu_has_cx16 boot_cpu_has(X86_FEATURE_CX16) #define cpu_has_eager_fpu boot_cpu_has(X86_FEATURE_EAGER_FPU) -- cgit v1.2.2