[PATCH 03/46] perf cgroup: Make evlist__find_cgroup() more compact

From: Arnaldo Carvalho de Melo
Date: Tue Jun 05 2018 - 14:06:30 EST


From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

By taking advantage that __get() routines return the pointer to the
object for which a reference count is being get.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-xnvd07rdxliy04oi062samik@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/cgroup.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/cgroup.c b/tools/perf/util/cgroup.c
index decb91f9da82..ccd02634a616 100644
--- a/tools/perf/util/cgroup.c
+++ b/tools/perf/util/cgroup.c
@@ -93,20 +93,17 @@ static int open_cgroup(const char *name)
static struct cgroup *evlist__find_cgroup(struct perf_evlist *evlist, const char *str)
{
struct perf_evsel *counter;
- struct cgroup *cgrp = NULL;
/*
* check if cgrp is already defined, if so we reuse it
*/
evlist__for_each_entry(evlist, counter) {
if (!counter->cgrp)
continue;
- if (!strcmp(counter->cgrp->name, str)) {
- cgrp = cgroup__get(counter->cgrp);
- break;
- }
+ if (!strcmp(counter->cgrp->name, str))
+ return cgroup__get(counter->cgrp);
}

- return cgrp;
+ return NULL;
}

static struct cgroup *cgroup__new(const char *name)
--
2.14.3