From b8efb56172bc55082b8490778b07ef73eea0b551 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 15 Oct 2007 17:00:10 +0200
Subject: sched debug: BKL usage statistics

add per task and per rq BKL usage statistics.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/sched.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'include/linux/sched.h')

diff --git a/include/linux/sched.h b/include/linux/sched.h
index d0cc583..920eb73 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -621,6 +621,10 @@ struct sched_info {
 	/* timestamps */
 	unsigned long long last_arrival,/* when we last ran on a cpu */
 			   last_queued;	/* when we were last queued to run */
+#ifdef CONFIG_SCHEDSTATS
+	/* BKL stats */
+	unsigned long bkl_cnt;
+#endif
 };
 #endif /* defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) */
 
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