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Subject[PATCH v21 17/19] perf, tools, pmu-events: Fix fixed counters on Intel
Date
From: Andi Kleen <ak@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 <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>
---
Changelog[v21]:
Fix minor conflict in tools/perf/pmu-events/jevents.c
---
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 9cdfbaa..e8e2a87 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -305,6 +305,29 @@ 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,
@@ -391,7 +414,7 @@ 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);
--
1.8.3.1
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