diff options
| author | Jacob Shin <jacob.shin@amd.com> | 2013-02-06 21:26:29 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-02-16 12:37:27 +0400 |
| commit | e259514eef764a5286873618e34c560ecb6cff13 (patch) | |
| tree | 2ab5514cd2390f2392d8b55988c62ebe0163317d /arch/x86/include | |
| parent | 6a71e69f78fbcb453f4444a8288ea8b7cdc7cea4 (diff) | |
| download | linux-e259514eef764a5286873618e34c560ecb6cff13.tar.xz | |
perf/x86/amd: Enable northbridge performance counters on AMD family 15h
On AMD family 15h processors, there are 4 new performance
counters (in addition to 6 core performance counters) that can
be used for counting northbridge events (i.e. DRAM accesses).
Their bit fields are almost identical to the core performance
counters. However, unlike the core performance counters, these
MSRs are shared between multiple cores (that share the same
northbridge).
We will reuse the same code path as existing family 10h
northbridge event constraints handler logic to enforce
this sharing.
Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jacob Shin <jacob.shin@amd.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1360171589-6381-7-git-send-email-jacob.shin@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/perf_event.h | 9 | ||||
| -rw-r--r-- | arch/x86/include/uapi/asm/msr-index.h | 2 |
3 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 2d9075e863a0..93fe929d1cee 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -167,6 +167,7 @@ #define X86_FEATURE_TBM (6*32+21) /* trailing bit manipulations */ #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 */ /* * Auxiliary flags: Linux defined - For features scattered in various @@ -309,6 +310,7 @@ extern const char * const x86_power_flags[32]; #define cpu_has_hypervisor boot_cpu_has(X86_FEATURE_HYPERVISOR) #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_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) diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h index 2234eaaecb52..57cb63402213 100644 --- a/arch/x86/include/asm/perf_event.h +++ b/arch/x86/include/asm/perf_event.h @@ -29,9 +29,14 @@ #define ARCH_PERFMON_EVENTSEL_INV (1ULL << 23) #define ARCH_PERFMON_EVENTSEL_CMASK 0xFF000000ULL +#define AMD64_EVENTSEL_INT_CORE_ENABLE (1ULL << 36) #define AMD64_EVENTSEL_GUESTONLY (1ULL << 40) #define AMD64_EVENTSEL_HOSTONLY (1ULL << 41) +#define AMD64_EVENTSEL_INT_CORE_SEL_SHIFT 37 +#define AMD64_EVENTSEL_INT_CORE_SEL_MASK \ + (0xFULL << AMD64_EVENTSEL_INT_CORE_SEL_SHIFT) + #define AMD64_EVENTSEL_EVENT \ (ARCH_PERFMON_EVENTSEL_EVENT | (0x0FULL << 32)) #define INTEL_ARCH_EVENT_MASK \ @@ -46,8 +51,12 @@ #define AMD64_RAW_EVENT_MASK \ (X86_RAW_EVENT_MASK | \ AMD64_EVENTSEL_EVENT) +#define AMD64_RAW_EVENT_MASK_NB \ + (AMD64_EVENTSEL_EVENT | \ + ARCH_PERFMON_EVENTSEL_UMASK) #define AMD64_NUM_COUNTERS 4 #define AMD64_NUM_COUNTERS_CORE 6 +#define AMD64_NUM_COUNTERS_NB 4 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL 0x3c #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK (0x00 << 8) diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h index 433a59fb1a74..075a40255591 100644 --- a/arch/x86/include/uapi/asm/msr-index.h +++ b/arch/x86/include/uapi/asm/msr-index.h @@ -194,6 +194,8 @@ /* Fam 15h MSRs */ #define MSR_F15H_PERF_CTL 0xc0010200 #define MSR_F15H_PERF_CTR 0xc0010201 +#define MSR_F15H_NB_PERF_CTL 0xc0010240 +#define MSR_F15H_NB_PERF_CTR 0xc0010241 /* Fam 10h MSRs */ #define MSR_FAM10H_MMIO_CONF_BASE 0xc0010058 |