linux-kernel - Re: [PATCHv3] tracing - support multiple pids in set_pid

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Date:	Wed, 16 Sep 2009 11:51:32 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	jolsa@...hat.com
Cc:	mingo@...e.hu, lizf@...fujitsu.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv3] tracing - support multiple pids in set_pid_ftrace
 file

On Wed, 2009-09-16 at 10:15 +0200, jolsa@...hat.com wrote:
> Adding the possibility to set more than 1 pid in the set_pid_ftrace file,
> thus allowing to trace more than 1 independent processes.
> 
> Usage:
> 
> sh-4.0# echo 284 > ./set_ftrace_pid 
> sh-4.0# cat ./set_ftrace_pid 
> 284
> sh-4.0# echo 1 >> ./set_ftrace_pid 
> sh-4.0# echo 0 >> ./set_ftrace_pid 
> sh-4.0# cat ./set_ftrace_pid 
> swapper tasks
> 1
> 284
> sh-4.0# echo 4 > ./set_ftrace_pid 
> sh-4.0# cat ./set_ftrace_pid 
> 4
> sh-4.0# echo > ./set_ftrace_pid 
> sh-4.0# cat ./set_ftrace_pid 
> no pid
> sh-4.0# 
> 
> 
> wbr,
> jirka
> 
> Signed-off-by: Jiri Olsa <jolsa@...hat.com>

Thanks! I'll queue this up for 2.6.33. (too late for this merge window).

Nitpick. For future patches, have the subject be:

 tracing: ...

not

 tracing - ...

-- Steve


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