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>
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 @@
},
};
+
+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 @@
.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,