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perf pmu: Let pmu's with no events show up on perf list

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perf list only lists PMUs with events.  Add a flag to cause a PMU to be
also listed separately.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1414061124-26830-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2014-10-23 13:45:10 +03:00 committed by Arnaldo Carvalho de Melo
parent ed3077585f
commit 42634bc7a0
2 changed files with 12 additions and 2 deletions
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13
tools/perf/util/pmu.c
View file

@ -747,15 +747,18 @@ void print_pmu_events(const char *event_glob, bool name_only)
pmu = NULL;
len = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL)
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
list_for_each_entry(alias, &pmu->aliases, list)
len++;
if (pmu->selectable)
len++;
}
aliases = malloc(sizeof(char *) * len);
if (!aliases)
return;
pmu = NULL;
j = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL)
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
list_for_each_entry(alias, &pmu->aliases, list) {
char *name = format_alias(buf, sizeof(buf), pmu, alias);
bool is_cpu = !strcmp(pmu->name, "cpu");
@ -772,6 +775,12 @@ void print_pmu_events(const char *event_glob, bool name_only)
aliases[j] = strdup(aliases[j]);
j++;
}
if (pmu->selectable) {
scnprintf(buf, sizeof(buf), "%s//", pmu->name);
aliases[j] = strdup(buf);
j++;
}
}
len = j;
qsort(aliases, len, sizeof(char *), cmp_string);
for (j = 0; j < len; j++) {

1
tools/perf/util/pmu.h
View file

@ -18,6 +18,7 @@ struct perf_event_attr;
struct perf_pmu {
char *name;
__u32 type;
bool selectable;
struct perf_event_attr *default_config;
struct cpu_map *cpus;
struct list_head format; /* HEAD struct perf_pmu_format -> list */