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From: Steven Rostedt <rostedt@goodmis.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Christoph Hellwig <hch@infradead.org>,
	Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
	Gregory Haskins <ghaskins@novell.com>,
	Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Tim Bird <tim.bird@am.sony.com>, Sam Ravnborg <sam@ravnborg.org>,
	"Frank Ch. Eigler" <fche@redhat.com>,
	Jan Kiszka <jan.kiszka@siemens.com>,
	John Stultz <johnstul@us.ibm.com>,
	Arjan van de Ven <arjan@infradead.org>,
	Steven Rostedt <srostedt@redhat.com>
Subject: [PATCH 17/23 -v8] Add marker in try_to_wake_up
Date: Wed, 30 Jan 2008 16:04:14 -0500	[thread overview]
Message-ID: <20080130210527.497782210@goodmis.org> (raw)
In-Reply-To: 20080130210357.927754294@goodmis.org

[-- Attachment #1: add-markers-to-wakeup.patch --]
[-- Type: text/plain, Size: 1040 bytes --]

Add markers into the wakeup code, to allow the tracer to
record wakeup timings.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 kernel/sched.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux-mcount.git/kernel/sched.c
===================================================================
--- linux-mcount.git.orig/kernel/sched.c	2008-01-30 15:26:37.000000000 -0500
+++ linux-mcount.git/kernel/sched.c	2008-01-30 15:35:02.000000000 -0500
@@ -1885,6 +1885,10 @@ static int try_to_wake_up(struct task_st
 
 out_activate:
 #endif /* CONFIG_SMP */
+	trace_mark(kernel_sched_wakeup,
+		   "p %p rq->curr %p",
+		   p, rq->curr);
+
 	schedstat_inc(p, se.nr_wakeups);
 	if (sync)
 		schedstat_inc(p, se.nr_wakeups_sync);
@@ -2026,6 +2030,10 @@ void fastcall wake_up_new_task(struct ta
 		p->sched_class->task_new(rq, p);
 		inc_nr_running(p, rq);
 	}
+	trace_mark(kernel_sched_wakeup_new,
+		   "p %p rq->curr %p",
+		   p, rq->curr);
+
 	check_preempt_curr(rq, p);
 #ifdef CONFIG_SMP
 	if (p->sched_class->task_wake_up)

-- 

  parent reply	other threads:[~2008-01-30 21:12 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-30 21:03 [PATCH 00/23 -v8] mcount and latency tracing utility -v8 Steven Rostedt
2008-01-30 21:03 ` [PATCH 01/23 -v8] printk - dont wakeup klogd with interrupts disabled Steven Rostedt
2008-01-30 21:03 ` [PATCH 02/23 -v8] Add basic support for gcc profiler instrumentation Steven Rostedt
2008-01-30 21:04 ` [PATCH 03/23 -v8] Annotate core code that should not be traced Steven Rostedt
2008-01-30 21:04 ` [PATCH 04/23 -v8] x86_64: notrace annotations Steven Rostedt
2008-01-30 21:04 ` [PATCH 05/23 -v8] add notrace annotations to vsyscall Steven Rostedt
2008-01-30 21:04 ` [PATCH 06/23 -v8] handle accurate time keeping over long delays Steven Rostedt
2008-01-31 12:10   ` Mathieu Desnoyers
2008-01-31 17:24     ` John Stultz
2008-02-01 17:02       ` Mathieu Desnoyers
2008-02-02  7:11         ` Steven Rostedt
2008-02-02 16:30           ` Mathieu Desnoyers
2008-01-30 21:04 ` [PATCH 07/23 -v8] initialize the clock source to jiffies clock Steven Rostedt
2008-01-30 21:04 ` [PATCH 08/23 -v8] add get_monotonic_cycles Steven Rostedt
2008-01-30 21:04 ` [PATCH 09/23 -v8] add notrace annotations to timing events Steven Rostedt
2008-01-30 21:04 ` [PATCH 10/23 -v8] mcount tracer add preempt_enable/disable notrace macros Steven Rostedt
2008-01-30 21:04 ` [PATCH 11/23 -v8] mcount based trace in the form of a header file library Steven Rostedt
2008-01-30 21:04 ` [PATCH 12/23 -v8] Add context switch marker to sched.c Steven Rostedt
2008-01-30 21:04 ` [PATCH 13/23 -v8] Make the task State char-string visible to all Steven Rostedt
2008-01-30 21:04 ` [PATCH 14/23 -v8] Add tracing of context switches Steven Rostedt
2008-02-05 17:04   ` Tim Bird
2008-01-30 21:04 ` [PATCH 15/23 -v8] Generic command line storage Steven Rostedt
2008-01-30 21:04 ` [PATCH 16/23 -v8] trace generic call to schedule switch Steven Rostedt
2008-01-30 21:04 ` Steven Rostedt [this message]
2008-01-30 21:04 ` [PATCH 18/23 -v8] mcount tracer for wakeup latency timings Steven Rostedt
2008-01-30 21:04 ` [PATCH 19/23 -v8] Trace irq disabled critical timings Steven Rostedt
2008-01-30 21:04 ` [PATCH 20/23 -v8] trace preempt off " Steven Rostedt
2008-01-30 21:04 ` [PATCH 21/23 -v8] Add markers to various events Steven Rostedt
2008-01-31 12:06   ` Mathieu Desnoyers
2008-02-02  7:00     ` Steven Rostedt
2008-02-02 14:14       ` Mathieu Desnoyers
2008-01-30 21:04 ` [PATCH 22/23 -v8] Add event tracer Steven Rostedt
2008-01-30 21:04 ` [PATCH 23/23 -v8] Critical latency timings histogram Steven Rostedt
2008-02-05 17:11 ` [PATCH 00/23 -v8] mcount and latency tracing utility -v8 Tim Bird

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