perf evlist: Introduce set_filter_pids method

We need to filter multiple pids in trace, i.e. trace itself,
gnome-terminal, X.org, etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-frtpkg7qapqwf7asa35wf8am@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 241b057c
...@@ -1085,19 +1085,38 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) ...@@ -1085,19 +1085,38 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter)
return err; return err;
} }
int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid) int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids)
{ {
char *filter; char *filter;
int ret; int ret = -1;
size_t i;
if (asprintf(&filter, "common_pid != %d", pid) < 0) for (i = 0; i < npids; ++i) {
return -1; if (i == 0) {
if (asprintf(&filter, "common_pid != %d", pids[i]) < 0)
return -1;
} else {
char *tmp;
if (asprintf(&tmp, "%s && common_pid != %d", filter, pids[i]) < 0)
goto out_free;
free(filter);
filter = tmp;
}
}
ret = perf_evlist__set_filter(evlist, filter); ret = perf_evlist__set_filter(evlist, filter);
out_free:
free(filter); free(filter);
return ret; return ret;
} }
int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid)
{
return perf_evlist__set_filter_pids(evlist, 1, &pid);
}
bool perf_evlist__valid_sample_type(struct perf_evlist *evlist) bool perf_evlist__valid_sample_type(struct perf_evlist *evlist)
{ {
struct perf_evsel *pos; struct perf_evsel *pos;
......
...@@ -78,6 +78,7 @@ int perf_evlist__add_newtp(struct perf_evlist *evlist, ...@@ -78,6 +78,7 @@ int perf_evlist__add_newtp(struct perf_evlist *evlist,
int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid); int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid);
int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids);
struct perf_evsel * struct perf_evsel *
perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
......
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