hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8JVN0 -------------------------------- Export cgroup.kill feature from cgroupv2 to cgroupv1. Therefore, user can kill all process in one cgroup and its subcgroups instead of kill them one by one. Signed-off-by: Lu Jialin <lujialin4@huawei.com> --- kernel/cgroup/cgroup-internal.h | 3 +++ kernel/cgroup/cgroup-v1.c | 5 +++++ kernel/cgroup/cgroup.c | 4 ++-- 3 files changed, 10 insertions(+), 2 deletions(-) diff --git a/kernel/cgroup/cgroup-internal.h b/kernel/cgroup/cgroup-internal.h index c56071f150f2..d5a197d4b0ec 100644 --- a/kernel/cgroup/cgroup-internal.h +++ b/kernel/cgroup/cgroup-internal.h @@ -264,6 +264,9 @@ int cgroup_show_path(struct seq_file *sf, struct kernfs_node *kf_node, int __cgroup_task_count(const struct cgroup *cgrp); int cgroup_task_count(const struct cgroup *cgrp); +ssize_t cgroup_kill_write(struct kernfs_open_file *of, char *buf, size_t nbytes, + loff_t off); + /* * rstat.c */ diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index 76db6c67e39a..c50d5da68f18 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -660,6 +660,11 @@ struct cftype cgroup1_base_files[] = { .write = cgroup_release_agent_write, .max_write_len = PATH_MAX - 1, }, + { + .name = "cgroup.kill", + .flags = CFTYPE_NOT_ON_ROOT, + .write = cgroup_kill_write, + }, { } /* terminate */ }; diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 1fb7f562289d..6030f015cb29 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -3973,8 +3973,8 @@ static void cgroup_kill(struct cgroup *cgrp) __cgroup_kill(dsct); } -static ssize_t cgroup_kill_write(struct kernfs_open_file *of, char *buf, - size_t nbytes, loff_t off) +ssize_t cgroup_kill_write(struct kernfs_open_file *of, char *buf, size_t nbytes, + loff_t off) { ssize_t ret = 0; int kill; -- 2.34.1