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tests/cgroup: use cgroup.kill in cg_killall()

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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 <tj@kernel.org>
Cc: cgroups@vger.kernel.org
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Christian Brauner 2021-05-08 14:15:40 +02:00 committed by Tejun Heo
parent 340272b040
commit 0de3103fa2
1 changed files with 4 additions and 0 deletions
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4
tools/testing/selftests/cgroup/cgroup_util.c
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@ -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;