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perf pmu: Support MetricExpr header in JSON event list

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Add support for parsing the MetricExpr header in the JSON event lists
and storing them in the alias structure.

Used in the next patch.

v2: Change DividedBy to MetricExpr
v3: Really catch all uses of DividedBy

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-10-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen
2017-03-20 13:17:07 -07:00
committed by Arnaldo Carvalho de Melo
parent b90b3e9c11
commit 00636c3b48
5 changed files with 23 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
tools/perf/pmu-events/jevents.c
View File

@@ -291,7 +291,8 @@ static void print_events_table_prefix(FILE *fp, const char *tblname)
static int print_events_table_entry(void *data, char *name, char *event,
char *desc, char *long_desc,
char *pmu, char *unit, char *perpkg)
char *pmu, char *unit, char *perpkg,
char *metric_expr)
{
struct perf_entry_data *pd = data;
FILE *outfp = pd->outfp;
@@ -315,6 +316,8 @@ static int print_events_table_entry(void *data, char *name, char *event,
fprintf(outfp, "\t.unit = \"%s\",\n", unit);
if (perpkg)
fprintf(outfp, "\t.perpkg = \"%s\",\n", perpkg);
if (metric_expr)
fprintf(outfp, "\t.metric_expr = \"%s\",\n", metric_expr);
fprintf(outfp, "},\n");
return 0;
@@ -362,7 +365,8 @@ static char *real_event(const char *name, char *event)
int json_events(const char *fn,
int (*func)(void *data, char *name, char *event, char *desc,
char *long_desc,
char *pmu, char *unit, char *perpkg),
char *pmu, char *unit, char *perpkg,
char *metric_expr),
void *data)
{
int err = -EIO;
@@ -388,6 +392,7 @@ int json_events(const char *fn,
char *filter = NULL;
char *perpkg = NULL;
char *unit = NULL;
char *metric_expr = NULL;
unsigned long long eventcode = 0;
struct msrmap *msr = NULL;
jsmntok_t *msrval = NULL;
@@ -398,6 +403,7 @@ int json_events(const char *fn,
for (j = 0; j < obj->size; j += 2) {
jsmntok_t *field, *val;
int nz;
char *s;
field = tok + j;
EXPECT(field->type == JSMN_STRING, tok + j,
@@ -444,7 +450,6 @@ int json_events(const char *fn,
NULL);
} else if (json_streq(map, field, "Unit")) {
const char *ppmu;
char *s;
ppmu = field_to_perf(unit_to_pmu, map, val);
if (ppmu) {
@@ -464,6 +469,10 @@ int json_events(const char *fn,
addfield(map, &unit, "", "", val);
} else if (json_streq(map, field, "PerPkg")) {
addfield(map, &perpkg, "", "", val);
} else if (json_streq(map, field, "MetricExpr")) {
addfield(map, &metric_expr, "", "", val);
for (s = metric_expr; *s; s++)
*s = tolower(*s);
}
/* ignore unknown fields */
}
@@ -488,7 +497,7 @@ int json_events(const char *fn,
fixname(name);
err = func(data, name, real_event(name, event), desc, long_desc,
pmu, unit, perpkg);
pmu, unit, perpkg, metric_expr);
free(event);
free(desc);
free(name);
@@ -498,6 +507,7 @@ int json_events(const char *fn,
free(filter);
free(perpkg);
free(unit);
free(metric_expr);
if (err)
break;
tok += j;

2
tools/perf/pmu-events/jevents.h
View File

@@ -5,7 +5,7 @@ int json_events(const char *fn,
int (*func)(void *data, char *name, char *event, char *desc,
char *long_desc,
char *pmu,
char *unit, char *perpkg),
char *unit, char *perpkg, char *metric_expr),
void *data);
char *get_cpu_str(void);

1
tools/perf/pmu-events/pmu-events.h
View File

@@ -13,6 +13,7 @@ struct pmu_event {
const char *pmu;
const char *unit;
const char *perpkg;
const char *metric_expr;
};
/*