From: Frederic Weisbecker <fweisbec@gmail.com>
To: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>,
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
linux-kernel@vger.kernel.org, zhaolei@cn.fujitsu.com,
Li Zefan <lizf@cn.fujitsu.com>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Baron <jbaron@redhat.com>
Subject: Re: [PATCH] softirq,tracing: enable to trace softirq raise latency
Date: Mon, 9 Nov 2009 02:58:16 +0100 [thread overview]
Message-ID: <20091109015812.GA13153@nowhere> (raw)
In-Reply-To: <4AF284CF.3010407@cn.fujitsu.com>
On Thu, Nov 05, 2009 at 03:54:55PM +0800, Lai Jiangshan wrote:
>
> Add a tracepoint for tracing when softirq action is raised.
>
> It and the existed tracepoints complete softirq's tracepoints:
> softirq_raise, softirq_entry and softirq_exit.
>
> And when this tracepoint is used in combination with
> the softirq_entry tracepoint we can determine
> the softirq raise latency.
>
> Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Looks good!
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
next prev parent reply other threads:[~2009-11-09 1:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-05 7:54 [PATCH] softirq,tracing: enable to trace softirq raise latency Lai Jiangshan
2009-11-05 14:43 ` Mathieu Desnoyers
2009-11-06 1:15 ` Lai Jiangshan
2009-11-06 1:29 ` Mathieu Desnoyers
2009-11-09 1:58 ` Frederic Weisbecker [this message]
2009-12-08 8:32 Lai Jiangshan
2009-12-10 8:06 ` Ingo Molnar
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