linux-kernel - Re: [for-next][PATCH 0/4] ftrace: Add dynamic trampoline support

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Message-ID: <alpine.LNX.2.00.1410291053180.20256@pobox.suse.cz>
Date:	Wed, 29 Oct 2014 17:27:30 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Steven Rostedt <rostedt@...dmis.org>
cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Vojtech Pavlik <vojtech@...e.cz>,
	Seth Jennings <sjenning@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [for-next][PATCH 0/4] ftrace: Add dynamic trampoline support

On Mon, 27 Oct 2014, Steven Rostedt wrote:

> This adds the allocation of dynamic trampolines. It still does not
> allow for dynamic ftrace_ops to use them on CONFIG_PREEMPT systems.
> That will come in 3.20, as I want to test out call_rcu_tasks() for
> a bit first on my own boxes.
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
> for-next
> 
> Head SHA1: 9fd7caf67913fbf35d834beaa8f9764d733a9236
> 
> 
> Steven Rostedt (Red Hat) (4):
>       ftrace/x86: Add dynamic allocated trampoline for ftrace_ops
>       ftrace/x86: Show trampoline call function in enabled_functions
>       ftrace/x86: Allow !CONFIG_PREEMPT dynamic ops to use allocated trampolines
>       ftrace: Add more information to ftrace_bug() output

FWIW I just did a very quick test, and kGraft seems to run flawlessly on 
top of this.

Thanks,

-- 
Jiri Kosina
SUSE Labs
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