linux-kernel - Re: [PATCH 01/14] sysctl: provide callback for write into ctl

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Message-ID: <1335729458.28106.247.camel@gandalf.stny.rr.com>
Date:	Sun, 29 Apr 2012 15:57:38 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Sasha Levin <levinsasha928@...il.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	viro@...iv.linux.org.uk, fweisbec@...il.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, paulus@...ba.org, acme@...stprotocols.net,
	james.l.morris@...cle.com, akpm@...ux-foundation.org,
	tglx@...utronix.de, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH 01/14] sysctl: provide callback for write into ctl_table
 entry

On Sun, 2012-04-29 at 16:14 +0200, Sasha Levin wrote:

> A fix for that could be having the sysctl modifying a different var,
> and having ftrace_enabled from that under a lock, but I'm not sure if
> it's worth the work for the cleanup.

That was my original plan, but it seemed too much of a hassle than it
was worth, as I needed to make sure the mirrored variable was in sync
with ftrace_enabled, otherwise it could be confusing when ftrace was not
working but sysctl showed ftrace set to 1.

-- Steve


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