linux-kernel - Re: [PATCH tip 2/2] tracing: Introduce trace_buffer_{lock_reserve,unlock

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Date:	Fri, 6 Feb 2009 01:02:52 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH tip 2/2] tracing: Introduce
	trace_buffer_{lock_reserve,unlock_commit}


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

> Impact: new API
> 
> These new functions do what previously was being open coded, reducing
> the number of details ftrace plugin writers have to worry about.
> 
> It also standardizes the handling of stacktrace, userstacktrace and
> other trace options we may introduce in the future.
> 
> With this patch, for instance, the blk tracer (and some others already
> in the tree) can use the "userstacktrace" /d/tracing/trace_options
> facility.
> 
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: Frédéric Weisbecker <fweisbec@...il.com>
> Cc: Jens Axboe <jens.axboe@...cle.com>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> ---
>  block/blktrace.c                 |   21 ++------
>  kernel/trace/kmemtrace.c         |   19 ++-----
>  kernel/trace/trace.c             |   94 +++++++++++++++++++++----------------
>  kernel/trace/trace.h             |   11 ++++
>  kernel/trace/trace_boot.c        |   20 ++------
>  kernel/trace/trace_branch.c      |    7 +--
>  kernel/trace/trace_hw_branches.c |    7 +--
>  kernel/trace/trace_mmiotrace.c   |   20 +++-----
>  kernel/trace/trace_power.c       |   20 ++------
>  9 files changed, 102 insertions(+), 117 deletions(-)

Applied to tip:tracing/ftrace, thanks!

	Ingo
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