linux-kernel - Re: [RFC] introduce prepare_to_wait

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Message-ID: <20131001174422.GP15690@laptop.programming.kicks-ass.net>
Date:	Tue, 1 Oct 2013 19:44:22 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] introduce prepare_to_wait_event()

On Tue, Oct 01, 2013 at 07:33:37PM +0200, Oleg Nesterov wrote:
> > > 			if (___wait_is_interruptible(state) && intr) {		\
> > > 				__ret = intr;					\
> 
> Since typeof(__ret) == typeof(intr) gcc can (likely) simply do "mov r1, r2",
> so "long intr" make the code better.

ok, fair enough; keep it long.
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