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authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2013-01-23 06:24:54 (GMT)
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-01-31 16:07:50 (GMT)
commit1c53a270724df91276d28d66f8e5a302fc6a5d74 (patch)
tree73351ee19f0c8fe04815e4f3603329cecbe0b2c8 /arch/powerpc/perf
parent2663960c159f23cbfb8e196c96e9fc9f3b5f1a8d (diff)
perf/POWER7: Make generic event translations available in sysfs
Make the generic perf events in POWER7 available via sysfs. $ ls /sys/bus/event_source/devices/cpu/events branch-instructions branch-misses cache-misses cache-references cpu-cycles instructions stalled-cycles-backend stalled-cycles-frontend $ cat /sys/bus/event_source/devices/cpu/events/cache-misses event=0x400f0 This patch is based on commits that implement this functionality on x86. Eg: commit a47473939db20e3961b200eb00acf5fcf084d755 Author: Jiri Olsa <jolsa@redhat.com> Date: Wed Oct 10 14:53:11 2012 +0200 perf/x86: Make hardware event translations available in sysfs Changelog:[v2] [Jiri Osla] Drop EVENT_ID() macro since it is only used once. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Anton Blanchard <anton@au1.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130123062454.GD13720@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r--arch/powerpc/perf/core-book3s.c12
-rw-r--r--arch/powerpc/perf/power7-pmu.c34
2 files changed, 46 insertions, 0 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index aa2465e..fa476d5 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -1305,6 +1305,16 @@ static int power_pmu_event_idx(struct perf_event *event)
return event->hw.idx;
}
+ssize_t power_events_sysfs_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct perf_pmu_events_attr *pmu_attr;
+
+ pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr);
+
+ return sprintf(page, "event=0x%02llx\n", pmu_attr->id);
+}
+
struct pmu power_pmu = {
.pmu_enable = power_pmu_enable,
.pmu_disable = power_pmu_disable,
@@ -1537,6 +1547,8 @@ int __cpuinit register_power_pmu(struct power_pmu *pmu)
pr_info("%s performance monitor hardware support registered\n",
pmu->name);
+ power_pmu.attr_groups = ppmu->attr_groups;
+
#ifdef MSR_HV
/*
* Use FCHV to ignore kernel events if MSR.HV is set.
diff --git a/arch/powerpc/perf/power7-pmu.c b/arch/powerpc/perf/power7-pmu.c
index eebb36d..269bf24 100644
--- a/arch/powerpc/perf/power7-pmu.c
+++ b/arch/powerpc/perf/power7-pmu.c
@@ -374,6 +374,39 @@ static int power7_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
},
};
+
+GENERIC_EVENT_ATTR(cpu-cycles, CYC);
+GENERIC_EVENT_ATTR(stalled-cycles-frontend, GCT_NOSLOT_CYC);
+GENERIC_EVENT_ATTR(stalled-cycles-backend, CMPLU_STALL);
+GENERIC_EVENT_ATTR(instructions, INST_CMPL);
+GENERIC_EVENT_ATTR(cache-references, LD_REF_L1);
+GENERIC_EVENT_ATTR(cache-misses, LD_MISS_L1);
+GENERIC_EVENT_ATTR(branch-instructions, BRU_FIN);
+GENERIC_EVENT_ATTR(branch-misses, BRU_MPRED);
+
+static struct attribute *power7_events_attr[] = {
+ GENERIC_EVENT_PTR(CYC),
+ GENERIC_EVENT_PTR(GCT_NOSLOT_CYC),
+ GENERIC_EVENT_PTR(CMPLU_STALL),
+ GENERIC_EVENT_PTR(INST_CMPL),
+ GENERIC_EVENT_PTR(LD_REF_L1),
+ GENERIC_EVENT_PTR(LD_MISS_L1),
+ GENERIC_EVENT_PTR(BRU_FIN),
+ GENERIC_EVENT_PTR(BRU_MPRED),
+ NULL
+};
+
+
+static struct attribute_group power7_pmu_events_group = {
+ .name = "events",
+ .attrs = power7_events_attr,
+};
+
+static const struct attribute_group *power7_pmu_attr_groups[] = {
+ &power7_pmu_events_group,
+ NULL,
+};
+
static struct power_pmu power7_pmu = {
.name = "POWER7",
.n_counter = 6,
@@ -385,6 +418,7 @@ static struct power_pmu power7_pmu = {
.get_alternatives = power7_get_alternatives,
.disable_pmc = power7_disable_pmc,
.flags = PPMU_ALT_SIPR,
+ .attr_groups = power7_pmu_attr_groups,
.n_generic = ARRAY_SIZE(power7_generic_events),
.generic_events = power7_generic_events,
.cache_events = &power7_cache_events,

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