perf evlist: Introduce set_filter_pids method

[uclinux-h8/linux.git] / tools / perf / util / evlist.c

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 39302a4..8d0b623 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1085,19 +1085,38 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter)
        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;
-       int ret;
+       int ret = -1;
+       size_t i;
 
-       if (asprintf(&filter, "common_pid != %d", pid) < 0)
-               return -1;
+       for (i = 0; i < npids; ++i) {
+               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);
+out_free:
        free(filter);
        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)
 {
        struct perf_evsel *pos;