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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 <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: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1360171589-6381-6-git-send-email-jacob.shin@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Jacob Shin 2013-02-06 11:26:28 -06:00 committed by Ingo Molnar
parent 4c1fd17a1c
commit 0fbdad078a
3 changed files with 13 additions and 1 deletions
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2
arch/x86/kernel/cpu/perf_event.c
View File

@ -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);
}
}

6
arch/x86/kernel/cpu/perf_event.h
View File

@ -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);

6
arch/x86/kernel/cpu/perf_event_amd.c
View File

@ -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,