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perf pmu: Add support for MetricName JSON attribute 

Add support for a new JSON event attribute to name MetricExpr for better
output in perf stat.

If the event has no MetricName it uses the normal event name instead to
describe the metric.

Before

  % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only
           time unc_p_freq_max_os_cycles
     1.000149775     15.7
     2.000344807     19.3
     3.000502544     16.7
     4.000640656      6.6
     5.000779955      9.9

After

  % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only
           time freq_max_os_cycles %
     1.000149775     15.7
     2.000344807     19.3
     3.000502544     16.7
     4.000640656      6.6
     5.000779955      9.9

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-13-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen 2017-03-20 13:17:10 -07:00 committed by Arnaldo Carvalho de Melo
parent 7f372a636d
commit 9628481423
9 changed files with 34 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
tools/perf/pmu-events/jevents.c
View File

@ -292,7 +292,8 @@ 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 *metric_expr)
char *metric_expr,
char *metric_name)
{
struct perf_entry_data *pd = data;
FILE *outfp = pd->outfp;
@ -318,6 +319,8 @@ static int print_events_table_entry(void *data, char *name, char *event,
fprintf(outfp, "\t.perpkg = \"%s\",\n", perpkg);
if (metric_expr)
fprintf(outfp, "\t.metric_expr = \"%s\",\n", metric_expr);
if (metric_name)
fprintf(outfp, "\t.metric_name = \"%s\",\n", metric_name);
fprintf(outfp, "},\n");
return 0;
@ -366,7 +369,8 @@ 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 *metric_expr),
char *metric_expr,
char *metric_name),
void *data)
{
int err = -EIO;
@ -393,6 +397,7 @@ int json_events(const char *fn,
char *perpkg = NULL;
char *unit = NULL;
char *metric_expr = NULL;
char *metric_name = NULL;
unsigned long long eventcode = 0;
struct msrmap *msr = NULL;
jsmntok_t *msrval = NULL;
@ -469,6 +474,8 @@ 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, "MetricName")) {
addfield(map, &metric_name, "", "", val);
} else if (json_streq(map, field, "MetricExpr")) {
addfield(map, &metric_expr, "", "", val);
for (s = metric_expr; *s; s++)
@ -497,7 +504,7 @@ int json_events(const char *fn,
fixname(name);
err = func(data, name, real_event(name, event), desc, long_desc,
pmu, unit, perpkg, metric_expr);
pmu, unit, perpkg, metric_expr, metric_name);
free(event);
free(desc);
free(name);
@ -508,6 +515,7 @@ int json_events(const char *fn,
free(perpkg);
free(unit);
free(metric_expr);
free(metric_name);
if (err)
break;
tok += j;

3
tools/perf/pmu-events/jevents.h
View File

@ -5,7 +5,8 @@ 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 *metric_expr),
char *unit, char *perpkg, char *metric_expr,
char *metric_name),
void *data);
char *get_cpu_str(void);

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

@ -14,6 +14,7 @@ struct pmu_event {
const char *unit;
const char *perpkg;
const char *metric_expr;
const char *metric_name;
};
/*

1
tools/perf/util/evsel.c
View File

@ -237,6 +237,7 @@ void perf_evsel__init(struct perf_evsel *evsel,
perf_evsel__calc_id_pos(evsel);
evsel->cmdline_group_boundary = false;
evsel->metric_expr = NULL;
evsel->metric_name = NULL;
evsel->metric_events = NULL;
evsel->collect_stat = false;
}

1
tools/perf/util/evsel.h
View File

@ -133,6 +133,7 @@ struct perf_evsel {
int bpf_fd;
bool merged_stat;
const char * metric_expr;
const char * metric_name;
struct perf_evsel **metric_events;
bool collect_stat;
};

1
tools/perf/util/parse-events.c
View File

@ -1256,6 +1256,7 @@ int parse_events_add_pmu(struct parse_events_evlist *data,
evsel->per_pkg = info.per_pkg;
evsel->snapshot = info.snapshot;
evsel->metric_expr = info.metric_expr;
evsel->metric_name = info.metric_name;
}
return evsel ? 0 : -ENOMEM;

15
tools/perf/util/pmu.c
View File

@ -232,7 +232,8 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
char *desc, char *val,
char *long_desc, char *topic,
char *unit, char *perpkg,
char *metric_expr)
char *metric_expr,
char *metric_name)
{
struct perf_pmu_alias *alias;
int ret;
@ -267,6 +268,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
}
alias->metric_expr = metric_expr ? strdup(metric_expr) : NULL;
alias->metric_name = metric_name ? strdup(metric_name): NULL;
alias->desc = desc ? strdup(desc) : NULL;
alias->long_desc = long_desc ? strdup(long_desc) :
desc ? strdup(desc) : NULL;
@ -296,7 +298,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
buf[ret] = 0;
return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
NULL, NULL);
NULL, NULL, NULL);
}
static inline bool pmu_alias_info_file(char *name)
@ -567,7 +569,8 @@ static void pmu_add_cpu_aliases(struct list_head *head, const char *name)
(char *)pe->desc, (char *)pe->event,
(char *)pe->long_desc, (char *)pe->topic,
(char *)pe->unit, (char *)pe->perpkg,
(char *)pe->metric_expr);
(char *)pe->metric_expr,
(char *)pe->metric_name);
}
out:
@ -995,6 +998,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
info->scale = 0.0;
info->snapshot = false;
info->metric_expr = NULL;
info->metric_name = NULL;
list_for_each_entry_safe(term, h, head_terms, list) {
alias = pmu_find_alias(pmu, term);
@ -1011,6 +1015,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
if (alias->per_pkg)
info->per_pkg = true;
info->metric_expr = alias->metric_expr;
info->metric_name = alias->metric_name;
list_del(&term->list);
free(term);
@ -1106,6 +1111,7 @@ struct sevent {
char *str;
char *pmu;
char *metric_expr;
char *metric_name;
};
static int cmp_sevent(const void *a, const void *b)
@ -1205,6 +1211,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
aliases[j].str = alias->str;
aliases[j].pmu = pmu->name;
aliases[j].metric_expr = alias->metric_expr;
aliases[j].metric_name = alias->metric_name;
j++;
}
if (pmu->selectable &&
@ -1241,6 +1248,8 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
printf("]\n");
if (verbose > 0) {
printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
if (aliases[j].metric_name)
printf(" MetricName: %s", aliases[j].metric_name);
if (aliases[j].metric_expr)
printf(" MetricExpr: %s", aliases[j].metric_expr);
putchar('\n');

2
tools/perf/util/pmu.h
View File

@ -32,6 +32,7 @@ struct perf_pmu {
struct perf_pmu_info {
const char *unit;
const char *metric_expr;
const char *metric_name;
double scale;
bool per_pkg;
bool snapshot;
@ -52,6 +53,7 @@ struct perf_pmu_alias {
bool per_pkg;
bool snapshot;
char *metric_expr;
char *metric_name;
};
struct perf_pmu *perf_pmu__find(const char *name);

4
tools/perf/util/stat-shadow.c
View File

@ -803,7 +803,9 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
if (expr__parse(&ratio, &pctx, &p) == 0)
print_metric(ctxp, NULL, "%8.1f",
out->force_header ? evsel->name : "",
evsel->metric_name ?
evsel->metric_name :
out->force_header ? evsel->name : "",
ratio);
else
print_metric(ctxp, NULL, NULL, "", 0);