linux-kernel - Re: [PATCH] Allow NULL pointers in percpu

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Message-ID: <Pine.LNX.4.44L0.0611171307180.2627-100000@iolanthe.rowland.org>
Date:	Fri, 17 Nov 2006 13:07:59 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Daniel Walker <dwalker@...sta.com>
cc:	Andrew Morton <akpm@...l.org>,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>,
	Jens Axboe <axboe@...nel.dk>,
	Christoph Lameter <clameter@....com>,
	Pedro Roque <roque@...fc.ul.pt>,
	"David S. Miller" <davem@...emloft.net>,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Allow NULL pointers in percpu_free

On Fri, 17 Nov 2006, Daniel Walker wrote:

> On Fri, 2006-11-17 at 12:36 -0500, Alan Stern wrote:
> 
> >  void percpu_free(void *__pdata)
> >  {
> > +	if (!__pdata)
> > +		return;
> 
> Should be unlikely() right?

It certainly could be.  I tend not to put such annotations in my code, but 
it wouldn't hurt.

Alan Stern

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