Commit-ID: 0fbdad078a70ed72248c3d30fe32e45e83be00d1
Gitweb: http://git.kernel.org/tip/0fbdad078a70ed72248c3d30fe32e45e83be00d1
Author: Jacob Shin <jacob.shin@xxxxxxx>
AuthorDate: Wed, 6 Feb 2013 11:26:28 -0600
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 6 Feb 2013 19:45:24 +0100
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@xxxxxxx>
Acked-by: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1360171589-6381-6-git-send-email-jacob.shin@xxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/cpu/perf_event.c | 2 +-
arch/x86/kernel/cpu/perf_event.h | 6 ++++++
arch/x86/kernel/cpu/perf_event_amd.c | 6 ++++++
3 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index c0df5ed2..bf0f01a 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 a7f06a9..7f5c75c 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 b60f31c..05462f0 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,
--
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