From: Andi Kleen <a...@linux.intel.com>
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 <a...@linux.intel.com>
Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
[Fix minor compile error]
---
tools/perf/pmu-events/jevents.c | 27 +++++++++++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index b701d77..c8d8e4a 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -237,6 +237,29 @@ static void print_events_table_suffix(FILE *outfp)
fprintf(outfp, "};\n");
}
+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,
@@ -325,8 +348,8 @@ int json_events(const char *fn,
if (msr != NULL)
addfield(map, &event, ",", msr->pname, msrval);
fixname(name);
-
- err = func(data, name, event, desc, long_desc, topic);
+ err = func(data, name, real_event(name, event), desc,
+ long_desc, topic);
free(event);
free(desc);
free(name);
--
2.5.3
