[tip:sched/core] sched/debug: Add sum_sleep_runtime to /proc/<pid >/sched

[tip-bot for Srikar Dronamraju]

Commit-ID:  82a0d2762699b95d6ce4114d00dc1865df9b0df3
Gitweb:     http://git.kernel.org/tip/82a0d2762699b95d6ce4114d00dc1865df9b0df3
Author:     Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 8 Jun 2015 13:40:41 +0530
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Fri, 19 Jun 2015 10:03:11 +0200

sched/debug: Add sum_sleep_runtime to /proc/<pid>/sched

When CONFIG_SCHEDSTATS is enabled, /proc/<pid>/sched prints almost all
sched statistics except sum_sleep_runtime. Since sum_sleep_runtime is
a good info to collect, add this it to /proc/<pid>/sched.

Signed-off-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1433751041-11724-4-git-send-email-srikar@xxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 kernel/sched/debug.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 7dc547e..704683c 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -584,6 +584,7 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 	nr_switches = p->nvcsw + p->nivcsw;
 
 #ifdef CONFIG_SCHEDSTATS
+	PN(se.statistics.sum_sleep_runtime);
 	PN(se.statistics.wait_start);
 	PN(se.statistics.sleep_start);
 	PN(se.statistics.block_start);
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