linux-kernel - Re: [PATCH/RFC 2/3] ftrace: introduce nohotpatch function attribute

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Message-ID: <20150126152600.GA6977@osiris>
Date:	Mon, 26 Jan 2015 16:26:00 +0100
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Masami Hiramatsu <maasami.hiramatsu.pt@...achi.com>,
	Vojtech Pavlik <vojtech@...e.cz>,
	Jiri Kosina <jkosina@...e.cz>, Jiri Slaby <jslaby@...e.cz>,
	Andreas Krebbel <krebbel@...ux.vnet.ibm.com>,
	Dominik Vogt <vogt@...ux.vnet.ibm.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH/RFC 2/3] ftrace: introduce nohotpatch function attribute

On Mon, Jan 26, 2015 at 10:22:26AM -0500, Steven Rostedt wrote:
> On Mon, 26 Jan 2015 16:03:19 +0100
> Heiko Carstens <heiko.carstens@...ibm.com> wrote:
> 
> > Actually they should be mutually exclusive. I just merged them "just in case".
> > 
> > So something like this
> > 
> > #ifdef CC_USING_HOTPATCH
> > #define notrace __attribute__((hotpatch(0,0)))
> > #else
> > #define notrace __attribute__((no_instrument_function))
> > #endif
> > 
> > will work as well (just tested).
> 
> I think the above change looks cleaner.

Yes, I agree with you and will change the patch.

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