From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Randy Dunlap <rdunlap@xenotime.net>,
Geunsik Lim <geunsik.lim@samsung.com>
Subject: [PATCH 6/9] ftrace: sched_switch plugin is deprecated
Date: Mon, 13 Feb 2012 22:39:15 -0500 [thread overview]
Message-ID: <20120214034007.862836421@goodmis.org> (raw)
In-Reply-To: <20120214033909.904564921@goodmis.org>
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From: Geunsik Lim <geunsik.lim@samsung.com>
Actually, sched_switch function tracer is merged into wakeup/wakeup_rt
Update 'mini-HOWTO' for ftrace(Kernel function tracer).
If we want to trace "sched:sched_switch" to trace sched_switch func,
We may utilize event option.(e.g: trace-cmd list -e | grep sched)
This patch is based on Linux-3.3.rc2-SMP-PREEMPT
Link: http://lkml.kernel.org/r/1328695537-15081-1-git-send-email-geunsik.lim@gmail.com
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Geunsik Lim <geunsik.lim@samsung.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/trace.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a3f1bc5..10d5503 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2764,12 +2764,12 @@ static const char readme_msg[] =
"tracing mini-HOWTO:\n\n"
"# mount -t debugfs nodev /sys/kernel/debug\n\n"
"# cat /sys/kernel/debug/tracing/available_tracers\n"
- "wakeup preemptirqsoff preemptoff irqsoff function sched_switch nop\n\n"
+ "wakeup wakeup_rt preemptirqsoff preemptoff irqsoff function nop\n\n"
"# cat /sys/kernel/debug/tracing/current_tracer\n"
"nop\n"
- "# echo sched_switch > /sys/kernel/debug/tracing/current_tracer\n"
+ "# echo wakeup > /sys/kernel/debug/tracing/current_tracer\n"
"# cat /sys/kernel/debug/tracing/current_tracer\n"
- "sched_switch\n"
+ "wakeup\n"
"# cat /sys/kernel/debug/tracing/trace_options\n"
"noprint-parent nosym-offset nosym-addr noverbose\n"
"# echo print-parent > /sys/kernel/debug/tracing/trace_options\n"
--
1.7.8.3
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next prev parent reply other threads:[~2012-02-14 3:41 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-14 3:39 [PATCH 0/9] [GIT PULL] tracing: cleanups, updates, and fixes Steven Rostedt
2012-02-14 3:39 ` [PATCH 1/9] ftrace: Change filter/notrace set functions to return exit code Steven Rostedt
2012-02-14 3:39 ` [PATCH 2/9] tracing/softirq: Move __raise_softirq_irqoff() out of header Steven Rostedt
2012-02-14 3:39 ` [PATCH 3/9] tracing/rcu: Add trace_##name##__rcuidle() static tracepoint for inside rcu_idle_exit() sections Steven Rostedt
2012-02-14 3:39 ` [PATCH 4/9] x86/tracing: Denote the power and cpuidle tracepoints as _rcuidle() Steven Rostedt
2012-02-14 3:39 ` [PATCH 5/9] cpuidle/tracing: Denote the tracepoints as being in rcu_idle_exit() section Steven Rostedt
2012-02-14 3:39 ` Steven Rostedt [this message]
2012-02-14 3:39 ` [PATCH 7/9] ftrace: Append wakeup_rt description of ftrace doc Steven Rostedt
2012-02-14 3:39 ` [PATCH 8/9] printk/tracing: Add console output tracing Steven Rostedt
2012-02-14 3:39 ` [PATCH 9/9] tracing/trivial: Use kcalloc instead of kzalloc to allocate array Steven Rostedt
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