linux-kernel - Re: [PATCH 2/2] tracing/function-return-tracer: Call prepare_ftrace

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Date:	Wed, 12 Nov 2008 23:22:37 +0100
From:	"Frédéric Weisbecker" <fweisbec@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Steven Rostedt" <rostedt@...dmis.org>,
	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] tracing/function-return-tracer: Call prepare_ftrace_return by registers

2008/11/12 Ingo Molnar <mingo@...e.hu>:
>
> * Frederic Weisbecker <fweisbec@...il.com> wrote:
>
>> Impact: Optimize a bit the function return tracer
>>
>> This patch changes the calling convention of prepare_ftrace_return
>> to pass its arguments by register. This will optimize it a bit and
>> prepare it to support dynamic tracing.
>>
>> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
>> Cc: Steven Rostedt <rostedt@...dmis.org>
>> ---
>>  arch/x86/kernel/entry_32.S |    5 +----
>>  arch/x86/kernel/ftrace.c   |    1 -
>>  2 files changed, 1 insertions(+), 5 deletions(-)
>
> applied to tip/tracing/function-return-tracer, thanks Frederic!
>
> btw., should we now rename it all to the function-cost tracer?
>
>        Ingo
>


Yes. I'm preparing a patch to do these renames....
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