Commit-ID: 0b1db474314c883d0bfc6720278667a6155e995a
Gitweb: http://git.kernel.org/tip/0b1db474314c883d0bfc6720278667a6155e995a
Author: Andi Kleen <ak@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 15 Sep 2016 15:24:54 -0700
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 3 Oct 2016 21:52:00 -0300
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@xxxxxxxxxxxxxxx>
Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx>
[Fix minor compile error]
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Madhavan Srinivasan <maddy@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1473978296-20712-18-git-send-email-sukadev@xxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/pmu-events/jevents.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 13f4284..04e106e 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);
--
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