linux-kernel - Re: [PATCH tip 1/1] tracing: handle unregistering the current tracer

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Message-ID: <20090209095816.GB20467@elte.hu>
Date:	Mon, 9 Feb 2009 10:58:16 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH tip 1/1] tracing: handle unregistering the current
	tracer


* Arnaldo Carvalho de Melo <acme@...hat.com> wrote:

> Impact: simplification
> 
> Instead of requiring that plugins have the sequence:
> 
>   my_tracer_stop(my_trace_array);
>   unregister_tracer(my_tracer);
> 
> it should be possible just do a:
> 
>   unregister_tracer(my_tracer);
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> ---
>  kernel/trace/trace.c |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)

Applied to tip/tracing/ftrace, thanks Arnaldo!

Nice one - we should try to shoot for the smallest physically
possible linecount for any new (possibly trivial) tracer plugin.

	Ingo
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