lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-Id: <1514378221-11020-1-git-send-email-laoar.shao@gmail.com> Date: Wed, 27 Dec 2017 20:37:01 +0800 From: Yafang Shao <laoar.shao@...il.com> To: mingo@...hat.com, peterz@...radead.org Cc: linux-kernel@...r.kernel.org, Yafang Shao <laoar.shao@...il.com> Subject: [PATCH] sched: cgroup: export nr_running for each cpu cgroup Export the nr_running for each cpu cgroup could help us monitor the container conveniently. The total threads of cpu cgroup could be got from the tasks file, and it could also be got from pids subsystem. But we still donot know how many processes are running in a container, only if we traversal the status of all processes, that's a little expensive. Hence export the nr_running. Signed-off-by: Yafang Shao <laoar.shao@...il.com> --- kernel/sched/core.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 644fa2e..926575a 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6648,10 +6648,17 @@ static int cpu_cfs_stat_show(struct seq_file *sf, void *v) { struct task_group *tg = css_tg(seq_css(sf)); struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth; + unsigned int nr_running = 0; + int cpu; + + for_each_online_cpu(cpu) + if (tg->cfs_rq[cpu]) + nr_running += tg->cfs_rq[cpu]->h_nr_running; seq_printf(sf, "nr_periods %d\n", cfs_b->nr_periods); seq_printf(sf, "nr_throttled %d\n", cfs_b->nr_throttled); seq_printf(sf, "throttled_time %llu\n", cfs_b->throttled_time); + seq_printf(sf, "nr_running %u\n", nr_running); return 0; } -- 1.8.3.1
Powered by blists - more mailing lists