From: Jacob Shin Date: Wed, 6 Feb 2013 17:26:28 +0000 (-0600) Subject: perf/x86: Allow for architecture specific RDPMC indexes X-Git-Tag: MMI-PSA29.97-13-9~15047^2~4 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0fbdad078a70ed72248c3d30fe32e45e83be00d1;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git perf/x86: Allow for architecture specific RDPMC indexes Similar to config_base and event_base, allow architecture specific RDPMC ECX values. Signed-off-by: Jacob Shin Acked-by: Stephane Eranian Cc: Paul Mackerras Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1360171589-6381-6-git-send-email-jacob.shin@amd.com Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index c0df5ed2e048..bf0f01aea994 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -829,7 +829,7 @@ static inline void x86_assign_hw_event(struct perf_event *event, } else { hwc->config_base = x86_pmu_config_addr(hwc->idx); hwc->event_base = x86_pmu_event_addr(hwc->idx); - hwc->event_base_rdpmc = hwc->idx; + hwc->event_base_rdpmc = x86_pmu_rdpmc_index(hwc->idx); } } diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index a7f06a90d2e7..7f5c75c2afdd 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -326,6 +326,7 @@ struct x86_pmu { unsigned eventsel; unsigned perfctr; int (*addr_offset)(int index, bool eventsel); + int (*rdpmc_index)(int index); u64 (*event_map)(int); int max_events; int num_counters; @@ -459,6 +460,11 @@ static inline unsigned int x86_pmu_event_addr(int index) x86_pmu.addr_offset(index, false) : index); } +static inline int x86_pmu_rdpmc_index(int index) +{ + return x86_pmu.rdpmc_index ? x86_pmu.rdpmc_index(index) : index; +} + int x86_setup_perfctr(struct perf_event *event); int x86_pmu_hw_config(struct perf_event *event); diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c index b60f31caeda0..05462f0432d5 100644 --- a/arch/x86/kernel/cpu/perf_event_amd.c +++ b/arch/x86/kernel/cpu/perf_event_amd.c @@ -173,6 +173,11 @@ static inline int amd_pmu_addr_offset(int index, bool eventsel) return offset; } +static inline int amd_pmu_rdpmc_index(int index) +{ + return index; +} + static int amd_pmu_hw_config(struct perf_event *event) { int ret; @@ -620,6 +625,7 @@ static __initconst const struct x86_pmu amd_pmu = { .eventsel = MSR_K7_EVNTSEL0, .perfctr = MSR_K7_PERFCTR0, .addr_offset = amd_pmu_addr_offset, + .rdpmc_index = amd_pmu_rdpmc_index, .event_map = amd_pmu_event_map, .max_events = ARRAY_SIZE(amd_perfmon_event_map), .num_counters = AMD64_NUM_COUNTERS,