diff options
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 397317248ddd..35c91859f8a6 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -262,6 +262,9 @@ struct cfs_bandwidth { struct hrtimer period_timer; struct list_head throttled_cfs_rq; + /* statistics */ + int nr_periods, nr_throttled; + u64 throttled_time; #endif }; @@ -402,6 +405,7 @@ struct cfs_rq { u64 runtime_expires; s64 runtime_remaining; + u64 throttled_timestamp; int throttled, throttle_count; struct list_head throttled_list; #endif @@ -9397,6 +9401,19 @@ static int __cfs_schedulable(struct task_group *tg, u64 period, u64 quota) return ret; } + +static int cpu_stats_show(struct cgroup *cgrp, struct cftype *cft, + struct cgroup_map_cb *cb) +{ + struct task_group *tg = cgroup_tg(cgrp); + struct cfs_bandwidth *cfs_b = tg_cfs_bandwidth(tg); + + cb->fill(cb, "nr_periods", cfs_b->nr_periods); + cb->fill(cb, "nr_throttled", cfs_b->nr_throttled); + cb->fill(cb, "throttled_time", cfs_b->throttled_time); + + return 0; +} #endif /* CONFIG_CFS_BANDWIDTH */ #endif /* CONFIG_FAIR_GROUP_SCHED */ @@ -9443,6 +9460,10 @@ static struct cftype cpu_files[] = { .read_u64 = cpu_cfs_period_read_u64, .write_u64 = cpu_cfs_period_write_u64, }, + { + .name = "stat", + .read_map = cpu_stats_show, + }, #endif #ifdef CONFIG_RT_GROUP_SCHED { |