linux-kernel - Re: [PATCH] x86: entry_64 - introduce FTRACE

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Date:	Tue, 16 Dec 2008 22:57:53 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <srostedt@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Alexander van Heukelum <heukelum@...tmail.fm>
Subject: Re: [PATCH] x86: entry_64 - introduce FTRACE_ frame macro v2


* Cyrill Gorcunov <gorcunov@...il.com> wrote:

> Impact: clean up
> 
> Itroduce FTRACE_SAVE/RESTORE_FRAME which allow us to
> save a number of lines on source level.
> 
> Also fix a comment in ftrace.h.
> ---
> 
> Didn't add Steve's Ack since it's a new version
> 
>  arch/x86/include/asm/ftrace.h |   29 ++++++++++++++++++++-
>  arch/x86/kernel/entry_64.S    |   57 +++++-------------------------------------
>  2 files changed, 35 insertions(+), 51 deletions(-)

applied to tip/tracing/ftrace, thanks Cyrill!

i renamed it from FTRACE_* to MCOUNT_* - since that's where these frame 
details come from - these are stubs around GCC generated mcount calls.

	Ingo
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