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[PATCH 12/23 -v8] Add context switch marker to sched.c

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From: Steven Rostedt <rostedt@...>
To: LKML <linux-kernel@...>
Cc: Ingo Molnar <mingo@...>, Linus Torvalds <torvalds@...>, Andrew Morton <akpm@...>, Peter Zijlstra <a.p.zijlstra@...>, Christoph Hellwig <hch@...>, Mathieu Desnoyers <mathieu.desnoyers@...>, Gregory Haskins <ghaskins@...>, Arnaldo Carvalho de Melo <acme@...>, Thomas Gleixner <tglx@...>, Tim Bird <tim.bird@...>, Sam Ravnborg <sam@...>, Frank Ch. Eigler <fche@...>, Jan Kiszka <jan.kiszka@...>, John Stultz <johnstul@...>, Arjan van de Ven <arjan@...>, Steven Rostedt <srostedt@...>
Subject: [PATCH 12/23 -v8] Add context switch marker to sched.c
Date: Wednesday, January 30, 2008 - 5:04 pm

Add marker into context_switch to record the prev and next tasks.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 kernel/sched.c |    2 ++
 1 file changed, 2 insertions(+)

Index: linux-mcount.git/kernel/sched.c
===================================================================
--- linux-mcount.git.orig/kernel/sched.c	2008-01-30 14:36:00.000000000 -0500
+++ linux-mcount.git/kernel/sched.c	2008-01-30 15:25:31.000000000 -0500
@@ -2198,6 +2198,8 @@ context_switch(struct rq *rq, struct tas
 	struct mm_struct *mm, *oldmm;
 
 	prepare_task_switch(rq, prev, next);
+	trace_mark(kernel_sched_schedule,
+		   "prev %p next %p", prev, next);
 	mm = next->mm;
 	oldmm = prev->active_mm;
 	/*

-- 
--
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[PATCH 12/23 -v8] Add context switch marker to sched.c, Steven Rostedt, (Wed Jan 30, 5:04 pm)