diff options
| author | Srivatsa Vaddagiri <vatsa@codeaurora.org> | 2015-01-16 13:57:02 +0530 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:01:35 -0700 |
| commit | a6c5eb13da7663ce7e9fcfeb9f1e33019ac8e73c (patch) | |
| tree | 61588c7e281523b5ff62e17a2161be3d802dd91c /kernel/sched/debug.c | |
| parent | 0a33ec2ea97b52f7cccbc5da42a243d6c9038c6f (diff) | |
sched: Support CFS_BANDWIDTH feature in HMP scheduler
CFS_BANDWIDTH feature is not currently well-supported by HMP
scheduler. Issues encountered include a kernel panic when
rq->nr_big_tasks count becomes negative. This patch fixes HMP
scheduler code to better handle CFS_BANDWIDTH feature. The most
prominent change introduced is maintenance of HMP stats (nr_big_tasks,
nr_small_tasks, cumulative_runnable_avg) per 'struct cfs_rq' in
addition to being maintained in each 'struct rq'. This allows HMP
stats to be updated easily when a group is throttled on a cpu.
Change-Id: Iad9f378b79ab5d9d76f86d1775913cc1941e266a
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
[rameezmustafa@codeaurora.org: Port to msm-3.18]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: fixed minor conflict in dequeue_task_fair().]
Diffstat (limited to 'kernel/sched/debug.c')
| -rw-r--r-- | kernel/sched/debug.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index f0d1e0b40195..1154330bda65 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -227,6 +227,16 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) cfs_rq->throttled); SEQ_printf(m, " .%-30s: %d\n", "throttle_count", cfs_rq->throttle_count); + SEQ_printf(m, " .%-30s: %d\n", "runtime_enabled", + cfs_rq->runtime_enabled); +#ifdef CONFIG_SCHED_HMP + SEQ_printf(m, " .%-30s: %d\n", "nr_big_tasks", + cfs_rq->hmp_stats.nr_big_tasks); + SEQ_printf(m, " .%-30s: %d\n", "nr_small_tasks", + cfs_rq->hmp_stats.nr_small_tasks); + SEQ_printf(m, " .%-30s: %llu\n", "cumulative_runnable_avg", + cfs_rq->hmp_stats.cumulative_runnable_avg); +#endif #endif #ifdef CONFIG_FAIR_GROUP_SCHED @@ -322,6 +332,8 @@ do { \ #ifdef CONFIG_SCHED_HMP P(hmp_stats.nr_big_tasks); P(hmp_stats.nr_small_tasks); + SEQ_printf(m, " .%-30s: %llu\n", "hmp_stats.cumulative_runnable_avg", + rq->hmp_stats.cumulative_runnable_avg); #endif #undef P #undef PN |