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>,
Pavel Machek <pavel@ucw.cz>, Steven Rostedt <srostedt@redhat.com>
Subject: [PATCH 17/23 -v6] Add marker in try_to_wake_up
Date: Fri, 25 Jan 2008 23:22:09 -0500 [thread overview]
Message-ID: <20080126042803.840143806@goodmis.org> (raw)
In-Reply-To: 20080126042152.526086719@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 2008-01-25 21:47:21.000000000 -0500
+++ linux-mcount.git/kernel/sched.c 2008-01-25 21:47:30.000000000 -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)
--
next prev parent reply other threads:[~2008-01-26 4:30 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-26 4:21 [PATCH 00/23 -v6] mcount and latency tracing utility -v6 Steven Rostedt
2008-01-26 4:21 ` [PATCH 01/23 -v6] printk - dont wakeup klogd with interrupts disabled Steven Rostedt
2008-01-26 9:10 ` Pavel Machek
2008-01-26 9:52 ` Peter Zijlstra
2008-01-26 13:07 ` Steven Rostedt
2008-01-26 13:48 ` Steven Rostedt
2008-01-26 9:50 ` Peter Zijlstra
2008-01-26 13:03 ` Steven Rostedt
2008-01-26 4:21 ` [PATCH 02/23 -v6] Add basic support for gcc profiler instrumentation Steven Rostedt
2008-01-26 4:21 ` [PATCH 03/23 -v6] Annotate core code that should not be traced Steven Rostedt
2008-01-26 4:21 ` [PATCH 04/23 -v6] x86_64: notrace annotations Steven Rostedt
2008-01-26 4:21 ` [PATCH 05/23 -v6] add notrace annotations to vsyscall Steven Rostedt
2008-01-26 4:21 ` [PATCH 06/23 -v6] add notrace annotations for NMI routines Steven Rostedt
2008-01-26 4:21 ` [PATCH 07/23 -v6] handle accurate time keeping over long delays Steven Rostedt
2008-01-26 4:22 ` [PATCH 08/23 -v6] initialize the clock source to jiffies clock Steven Rostedt
2008-01-26 4:22 ` [PATCH 09/23 -v6] add get_monotonic_cycles Steven Rostedt
2008-01-26 4:22 ` [PATCH 10/23 -v6] add notrace annotations to timing events Steven Rostedt
2008-01-26 4:22 ` [PATCH 11/23 -v6] mcount based trace in the form of a header file library Steven Rostedt
2008-01-26 4:22 ` [PATCH 12/23 -v6] Add context switch marker to sched.c Steven Rostedt
2008-01-26 4:22 ` [PATCH 13/23 -v6] Make the task State char-string visible to all Steven Rostedt
2008-01-26 4:22 ` [PATCH 14/23 -v6] Add tracing of context switches Steven Rostedt
2008-01-26 4:22 ` [PATCH 15/23 -v6] Generic command line storage Steven Rostedt
2008-01-26 4:22 ` [PATCH 16/23 -v6] trace generic call to schedule switch Steven Rostedt
2008-01-26 4:22 ` Steven Rostedt [this message]
2008-01-26 4:22 ` [PATCH 18/23 -v6] mcount tracer for wakeup latency timings Steven Rostedt
2008-01-26 4:22 ` [PATCH 19/23 -v6] Trace irq disabled critical timings Steven Rostedt
2008-01-26 4:22 ` [PATCH 20/23 -v6] trace preempt off " Steven Rostedt
2008-01-26 4:22 ` [PATCH 21/23 -v6] Add markers to various events Steven Rostedt
2008-01-26 4:22 ` [PATCH 22/23 -v6] Add event tracer Steven Rostedt
2008-01-26 4:22 ` [PATCH 23/23 -v6] Critical latency timings histogram Steven Rostedt
2008-01-26 9:11 ` Pavel Machek
2008-01-26 13:00 ` Steven Rostedt
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