From 0de3103fa2cf9ed07cfde3e4fd578ead5de52047 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Sat, 8 May 2021 14:15:40 +0200 Subject: tests/cgroup: use cgroup.kill in cg_killall() If cgroup.kill file is supported make use of it. Link: https://lore.kernel.org/r/20210503143922.3093755-3-brauner@kernel.org Cc: Tejun Heo Cc: cgroups@vger.kernel.org Reviewed-by: Shakeel Butt Acked-by: Roman Gushchin Signed-off-by: Christian Brauner Signed-off-by: Tejun Heo --- tools/testing/selftests/cgroup/cgroup_util.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools/testing/selftests/cgroup') diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c index 027014662fb2..f60f7d764690 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -252,6 +252,10 @@ int cg_killall(const char *cgroup) char buf[PAGE_SIZE]; char *ptr = buf; + /* If cgroup.kill exists use it. */ + if (!cg_write(cgroup, "cgroup.kill", "1")) + return 0; + if (cg_read(cgroup, "cgroup.procs", buf, sizeof(buf))) return -1; -- cgit v1.2.3-59-g8ed1b