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Subject[PATCH -tip 2/2] sched: Display autogroup names in /proc/sched_debug.
sched: Display autogroup names in /proc/sched_debug.

Add autogroup name to cfs_rq and tasks information in /proc/sched_debug.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
---
kernel/sched_autogroup.c | 5 +++++
kernel/sched_debug.c | 3 +++
2 files changed, 8 insertions(+)

--- a/kernel/sched_autogroup.c
+++ b/kernel/sched_autogroup.c
@@ -231,6 +231,11 @@ void proc_sched_autogroup_show_task(stru
#ifdef CONFIG_SCHED_DEBUG
static inline int autogroup_path(struct task_group *tg, char *buf, int buflen)
{
+ int enabled = ACCESS_ONCE(sysctl_sched_autogroup_enabled);
+
+ if (!enabled || !tg->autogroup)
+ return 0;
+
return snprintf(buf, buflen, "%s-%ld", "/autogroup", tg->autogroup->id);
}
#endif /* CONFIG_SCHED_DEBUG */
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -93,6 +93,9 @@ static char group_path[PATH_MAX];

static char * task_group_path(struct task_group *tg)
{
+ if (autogroup_path(tg, group_path, PATH_MAX))
+ return group_path;
+
/*
* May be NULL if the underlying cgroup isn't fully-created yet
*/

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