perf evsel: Introduce is_group_member method
To clarify what is being tested, instead of assuming that evsel->leader
== NULL means either an 'isolated' evsel or a 'group leader'.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
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/n/tip-lvdbvimaxw9nc5een5vmem0c@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index e9d2d5d..7052934 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -222,7 +222,7 @@
for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
- if (pos->leader)
+ if (perf_evsel__is_group_member(pos))
continue;
for (thread = 0; thread < evlist->threads->nr; thread++)
ioctl(FD(pos, cpu, thread),
@@ -238,7 +238,7 @@
for (cpu = 0; cpu < cpu_map__nr(evlist->cpus); cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
- if (pos->leader)
+ if (perf_evsel__is_group_member(pos))
continue;
for (thread = 0; thread < evlist->threads->nr; thread++)
ioctl(FD(pos, cpu, thread),
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index fc4faaa..1fb636c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -519,14 +519,14 @@
* Disabling only independent events or group leaders,
* keeping group members enabled.
*/
- if (!evsel->leader)
+ if (!perf_evsel__is_group_member(evsel))
attr->disabled = 1;
/*
* Setting enable_on_exec for independent events and
* group leaders for traced executed by perf.
*/
- if (perf_target__none(&opts->target) && (!evsel->leader))
+ if (perf_target__none(&opts->target) && !perf_evsel__is_group_member(evsel))
attr->enable_on_exec = 1;
}
@@ -707,7 +707,7 @@
struct perf_evsel *leader = evsel->leader;
int fd;
- if (!leader)
+ if (!perf_evsel__is_group_member(evsel))
return -1;
/*
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 32d7ec7..a4c1dd4 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -3,6 +3,7 @@
#include <linux/list.h>
#include <stdbool.h>
+#include <stddef.h>
#include "../../../include/uapi/linux/perf_event.h"
#include "types.h"
#include "xyarray.h"
@@ -224,4 +225,9 @@
{
return list_entry(evsel->node.next, struct perf_evsel, node);
}
+
+static inline bool perf_evsel__is_group_member(const struct perf_evsel *evsel)
+{
+ return evsel->leader != NULL;
+}
#endif /* __PERF_EVSEL_H */