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From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Dominik Vogt <vogt@linux.vnet.ibm.com>,
	Masami Hiramatsu <maasami.hiramatsu.pt@hitachi.com>,
	Vojtech Pavlik <vojtech@suse.cz>, Jiri Kosina <jkosina@suse.cz>,
	Jiri Slaby <jslaby@suse.cz>,
	Andreas Krebbel <krebbel@linux.vnet.ibm.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH/RFC 2/3] ftrace: introduce nohotpatch function attribute
Date: Wed, 28 Jan 2015 06:36:45 +0100	[thread overview]
Message-ID: <20150128053645.GA4633@osiris> (raw)
In-Reply-To: <20150127094228.50e642fc@gandalf.local.home>

On Tue, Jan 27, 2015 at 09:42:28AM -0500, Steven Rostedt wrote:
> On Tue, 27 Jan 2015 07:19:42 +0100
> Dominik Vogt <vogt@linux.vnet.ibm.com> wrote:
>  
> > While the kernel may use only profiling or hotpatch at the same
> > time, Gcc is able to generate both for the same function.
> 
> Understood, but would that be useful for the kernel?

Right now not. We may change that anyway in the future if needed.

Steven, how do we proceed with this small series?

Since there don't seem to be any objections, I'll repost with the
changed notrace define. However I think the whole stuff should go
upstream via the ftrace tree. Is that ok with you?

FWIW, the s390 gcc hotpatch feature was merged in the meantime:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=11762b8363737591bfb9c66093bc2edf289b917f


  reply	other threads:[~2015-01-28  5:36 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-26 12:54 [PATCH/RFC 0/3] ftrace: allow arch specific compile options Heiko Carstens
2015-01-26 12:54 ` [PATCH/RFC 1/3] ftrace: allow architectures to specify ftrace " Heiko Carstens
2015-01-26 12:54 ` [PATCH/RFC 2/3] ftrace: introduce nohotpatch function attribute Heiko Carstens
2015-01-26 14:37   ` Steven Rostedt
2015-01-26 15:03     ` Heiko Carstens
2015-01-26 15:22       ` Steven Rostedt
2015-01-26 15:26         ` Heiko Carstens
2015-01-27  6:19     ` Dominik Vogt
2015-01-27 14:42       ` Steven Rostedt
2015-01-28  5:36         ` Heiko Carstens [this message]
2015-01-28 11:57           ` Steven Rostedt
2015-01-28 12:18             ` Heiko Carstens
2015-01-28 12:38               ` Steven Rostedt
2015-01-26 12:54 ` [PATCH/RFC 3/3] s390/ftrace: hotpatch support for function tracing Heiko Carstens

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