linux-kernel - Re: [PATCH] tracing - enabling "_

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Message-ID: <20091012111917.GA6934@jolsa.lab.eng.brq.redhat.com>
Date:	Mon, 12 Oct 2009 13:19:17 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	mingo@...e.hu, rostedt@...dmis.org
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing - enabling "__cold" functions

any feedback on this one?

thanks,
jirka

On Fri, Oct 09, 2009 at 06:14:59PM +0200, jolsa@...hat.com wrote:
> Based on the commit:
> 
> a586df06 "x86: Support __attribute__((__cold__)) in gcc 4.3"
> 
> some of the functions goes to the ".text.unlikely" section.
> 
> Looks like there's not many of them (I found printk, panic,
> __ssb_dma_not_implemented, fat_fs_error), but still worth
> to include I think.
> 
> wbr,
> jirka
> 
> 
> Signed-off-by: Jiri Olsa <jolsa@...hat.com>
> ---
>  scripts/recordmcount.pl |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
> index 090d300..bfb8b2c 100755
> --- a/scripts/recordmcount.pl
> +++ b/scripts/recordmcount.pl
> @@ -119,6 +119,7 @@ my %text_sections = (
>       ".sched.text" => 1,
>       ".spinlock.text" => 1,
>       ".irqentry.text" => 1,
> +     ".text.unlikely" => 1,
>  );
>  
>  $objdump = "objdump" if ((length $objdump) == 0);
> --
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