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| author | Chen Ridong <chenridong@huawei.com> | 2024-07-04 14:01:19 +0000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2024-07-05 08:32:08 -1000 |
| commit | b824766504e49f3fdcbb8c722e70996a78c3636e (patch) | |
| tree | 34fb08f86e4d03db6fcea66d0c46157557383301 /kernel/cgroup | |
| parent | 1028f391d5f9d4248e2f49193e6de2516ad630f8 (diff) | |
| download | lwn-b824766504e49f3fdcbb8c722e70996a78c3636e.tar.gz lwn-b824766504e49f3fdcbb8c722e70996a78c3636e.zip | |
cgroup/rstat: add force idle show helper
In the function cgroup_base_stat_cputime_show, there are five
instances of #ifdef, which makes the code not concise.
To address this, add the function cgroup_force_idle_show
to make the code more succinct.
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup')
| -rw-r--r-- | kernel/cgroup/rstat.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c index fb8b49437573..a06b45272411 100644 --- a/kernel/cgroup/rstat.c +++ b/kernel/cgroup/rstat.c @@ -594,49 +594,46 @@ static void root_cgroup_cputime(struct cgroup_base_stat *bstat) } } + +static void cgroup_force_idle_show(struct seq_file *seq, struct cgroup_base_stat *bstat) +{ +#ifdef CONFIG_SCHED_CORE + u64 forceidle_time = bstat->forceidle_sum; + + do_div(forceidle_time, NSEC_PER_USEC); + seq_printf(seq, "core_sched.force_idle_usec %llu\n", forceidle_time); +#endif +} + void cgroup_base_stat_cputime_show(struct seq_file *seq) { struct cgroup *cgrp = seq_css(seq)->cgroup; u64 usage, utime, stime; - struct cgroup_base_stat bstat; -#ifdef CONFIG_SCHED_CORE - u64 forceidle_time; -#endif if (cgroup_parent(cgrp)) { cgroup_rstat_flush_hold(cgrp); usage = cgrp->bstat.cputime.sum_exec_runtime; cputime_adjust(&cgrp->bstat.cputime, &cgrp->prev_cputime, &utime, &stime); -#ifdef CONFIG_SCHED_CORE - forceidle_time = cgrp->bstat.forceidle_sum; -#endif cgroup_rstat_flush_release(cgrp); } else { - root_cgroup_cputime(&bstat); - usage = bstat.cputime.sum_exec_runtime; - utime = bstat.cputime.utime; - stime = bstat.cputime.stime; -#ifdef CONFIG_SCHED_CORE - forceidle_time = bstat.forceidle_sum; -#endif + /* cgrp->bstat of root is not actually used, reuse it */ + root_cgroup_cputime(&cgrp->bstat); + usage = cgrp->bstat.cputime.sum_exec_runtime; + utime = cgrp->bstat.cputime.utime; + stime = cgrp->bstat.cputime.stime; } do_div(usage, NSEC_PER_USEC); do_div(utime, NSEC_PER_USEC); do_div(stime, NSEC_PER_USEC); -#ifdef CONFIG_SCHED_CORE - do_div(forceidle_time, NSEC_PER_USEC); -#endif seq_printf(seq, "usage_usec %llu\n" "user_usec %llu\n" "system_usec %llu\n", usage, utime, stime); -#ifdef CONFIG_SCHED_CORE - seq_printf(seq, "core_sched.force_idle_usec %llu\n", forceidle_time); -#endif + cgroup_force_idle_show(seq, &cgrp->bstat); } /* Add bpf kfuncs for cgroup_rstat_updated() and cgroup_rstat_flush() */ |