linux-kernel - Re: [PATCH 3/3] tracing: Remove leftover FTRACE_ENABLE/DISABLE

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Message-ID: <1284567686.5701.129.camel@gandalf.stny.rr.com>
Date:	Wed, 15 Sep 2010 12:21:26 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Valdis.Kletnieks@...edu
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 3/3] tracing: Remove leftover
 FTRACE_ENABLE/DISABLE_MCOUNT enums

On Wed, 2010-09-15 at 12:10 -0400, Valdis.Kletnieks@...edu wrote:
> On Tue, 14 Sep 2010 23:01:42 EDT, Steven Rostedt said:
> > From: Steven Rostedt <srostedt@...hat.com>
> > 
> > The enums for FTRACE_ENABLE_MCOUNT and FTRACE_DISABLE_MCOUNT were
> > used as commands to ftrace_run_update_code(). But these commands
> > were used by the old nasty ftrace daemon that has long been slain.
> 
> > -	FTRACE_START_FUNC_RET		= (1 << 5),
> > -	FTRACE_STOP_FUNC_RET		= (1 << 6),
> > +	FTRACE_START_FUNC_RET		= (1 << 3),
> > +	FTRACE_STOP_FUNC_RET		= (1 << 4),
> 
> This renumber isn't visible to user space, correct? (Asking because the enable/
> disable apparently *were* visible to the since-slain userspace daemon)

Nope, it's not visible to userspace, and the slain-daemon was a kernel
thread, not userspace.

-- Steve


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