From: Christian Brauner <christian.brauner@xxxxxxxxxx> If cgroup.kill file is supported make use of it. Link: https://lore.kernel.org/r/20210503143922.3093755-3-brauner@xxxxxxxxxx Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: cgroups@xxxxxxxxxxxxxxx Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx> Acked-by: Roman Gushchin <guro@xxxxxx> Signed-off-by: Christian Brauner <christian.brauner@xxxxxxxxxx> --- /* v2 */ - Roman Gushchin <guro@xxxxxx>: - Fix whitespace. /* v3 */ unchanged --- tools/testing/selftests/cgroup/cgroup_util.c | 4 ++++ 1 file changed, 4 insertions(+) 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; -- 2.27.0
