[PATCH v2 11/19] perf, tools: Support metric_group and no event name in json parser

Andi Kleen
2017-08-11T23:28:45Z

From: Andi Kleen <ak@linux.intel.com>

Some enhancements to the JSON parser to prepare for metrics support

- Parse the new MetricGroup field
- Support JSON events with no event name, that have only MetricName.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/pmu-events/jevents.c | 24 ++++++++++++++++++------
tools/perf/pmu-events/jevents.h | 2 +-
tools/perf/pmu-events/pmu-events.h | 1 +
3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 2350f6099a46..8e7ced6a0517 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -290,7 +290,7 @@ static int print_events_table_entry(void *data, char *name, char *event,
char *desc, char *long_desc,
char *pmu, char *unit, char *perpkg,
char *metric_expr,
- char *metric_name)
+ char *metric_name, char *metric_group)
{
struct perf_entry_data *pd = data;
FILE *outfp = pd->outfp;
@@ -302,8 +302,10 @@ static int print_events_table_entry(void *data, char *name, char *event,
*/
fprintf(outfp, "{\n");

- fprintf(outfp, "\t.name = \"%s\",\n", name);
- fprintf(outfp, "\t.event = \"%s\",\n", event);
+ if (name)
+ fprintf(outfp, "\t.name = \"%s\",\n", name);
+ if (event)
+ fprintf(outfp, "\t.event = \"%s\",\n", event);
fprintf(outfp, "\t.desc = \"%s\",\n", desc);
fprintf(outfp, "\t.topic = \"%s\",\n", topic);
if (long_desc && long_desc[0])
@@ -318,6 +320,8 @@ static int print_events_table_entry(void *data, char *name, char *event,
fprintf(outfp, "\t.metric_expr = \"%s\",\n", metric_expr);
if (metric_name)
fprintf(outfp, "\t.metric_name = \"%s\",\n", metric_name);
+ if (metric_group)
+ fprintf(outfp, "\t.metric_group = \"%s\",\n", metric_group);
fprintf(outfp, "},\n");

return 0;
@@ -355,6 +359,9 @@ static char *real_event(const char *name, char *event)
{
int i;

+ if (!name)
+ return NULL;
+
for (i = 0; fixed[i].name; i++)
if (!strcasecmp(name, fixed[i].name))
return (char *)fixed[i].event;
@@ -367,7 +374,7 @@ int json_events(const char *fn,
char *long_desc,
char *pmu, char *unit, char *perpkg,
char *metric_expr,
- char *metric_name),
+ char *metric_name, char *metric_group),
void *data)
{
int err = -EIO;
@@ -395,6 +402,7 @@ int json_events(const char *fn,
char *unit = NULL;
char *metric_expr = NULL;
char *metric_name = NULL;
+ char *metric_group = NULL;
unsigned long long eventcode = 0;
struct msrmap *msr = NULL;
jsmntok_t *msrval = NULL;
@@ -474,6 +482,8 @@ int json_events(const char *fn,
addfield(map, &perpkg, "", "", val);
} else if (json_streq(map, field, "MetricName")) {
addfield(map, &metric_name, "", "", val);
+ } else if (json_streq(map, field, "MetricGroup")) {
+ addfield(map, &metric_group, "", "", val);
} else if (json_streq(map, field, "MetricExpr")) {
addfield(map, &metric_expr, "", "", val);
for (s = metric_expr; *s; s++)
@@ -499,10 +509,11 @@ int json_events(const char *fn,
addfield(map, &event, ",", filter, NULL);
if (msr != NULL)
addfield(map, &event, ",", msr->pname, msrval);
- fixname(name);
+ if (name)
+ fixname(name);

err = func(data, name, real_event(name, event), desc, long_desc,
- pmu, unit, perpkg, metric_expr, metric_name);
+ pmu, unit, perpkg, metric_expr, metric_name, metric_group);
free(event);
free(desc);
free(name);
@@ -514,6 +525,7 @@ int json_events(const char *fn,
free(unit);
free(metric_expr);
free(metric_name);
+ free(metric_group);
if (err)
break;
tok += j;
diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
index 611fac01913d..557994754410 100644
--- a/tools/perf/pmu-events/jevents.h
+++ b/tools/perf/pmu-events/jevents.h
@@ -6,7 +6,7 @@ int json_events(const char *fn,
char *long_desc,
char *pmu,
char *unit, char *perpkg, char *metric_expr,
- char *metric_name),
+ char *metric_name, char *metric_group),
void *data);
char *get_cpu_str(void);

diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 569eab3688dd..94fa1720f6fd 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -15,6 +15,7 @@ struct pmu_event {
const char *perpkg;
const char *metric_expr;
const char *metric_name;
+ const char *metric_group;
};

/*
--
2.9.4