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authorAndi Kleen <ak@linux.intel.com>2016-09-15 15:24:54 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-10-03 21:52:00 -0300
commit0b1db474314c883d0bfc6720278667a6155e995a (patch)
tree4fd4b0157b80eaa7cf72ef2a16ea037c89ebf587 /tools
parente312bcf13053970c0f07ec2c02d7d9be1a036ce0 (diff)
downloadlinux-0b1db474314c883d0bfc6720278667a6155e995a.tar.bz2
perf pmu-events: Fix fixed counters on Intel
The JSON event lists use a different encoding for fixed counters than perf for instructions and cycles (ref-cycles is ok) This lead to some common events like inst_retired.any or cpu_clk_unhalted.thread not counting, when specified with their JSON name. Special case these events in the jevents conversion process. I prefer to not touch the JSON files for this, as it's intended that standard JSON files can be just dropped into the perf build without changes. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> [Fix minor compile error] Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1473978296-20712-18-git-send-email-sukadev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/pmu-events/jevents.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 13f4284721d5..04e106e799ac 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -306,6 +306,29 @@ static void print_events_table_suffix(FILE *outfp)
close_table = 0;
}
+static struct fixed {
+ const char *name;
+ const char *event;
+} fixed[] = {
+ { "inst_retired.any", "event=0xc0" },
+ { "cpu_clk_unhalted.thread", "event=0x3c" },
+ { "cpu_clk_unhalted.thread_any", "event=0x3c,any=1" },
+ { NULL, NULL},
+};
+
+/*
+ * Handle different fixed counter encodings between JSON and perf.
+ */
+static char *real_event(const char *name, char *event)
+{
+ int i;
+
+ for (i = 0; fixed[i].name; i++)
+ if (!strcasecmp(name, fixed[i].name))
+ return (char *)fixed[i].event;
+ return event;
+}
+
/* Call func with each event in the json file */
int json_events(const char *fn,
int (*func)(void *data, char *name, char *event, char *desc,
@@ -392,7 +415,7 @@ int json_events(const char *fn,
addfield(map, &event, ",", msr->pname, msrval);
fixname(name);
- err = func(data, name, event, desc, long_desc);
+ err = func(data, name, real_event(name, event), desc, long_desc);
free(event);
free(desc);
free(name);