linux-kernel - Re: [PATCH] time: Add locking to xtime access in get

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Date:	Thu, 05 May 2011 08:50:31 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	john stultz <johnstul@...ibm.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Anton Blanchard <anton@...ba.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] time: Add locking to xtime access in get_seconds()

Le mercredi 04 mai 2011 à 23:21 -0700, john stultz a écrit :

> Would a comment to the effect of "ensure processors don't re-order calls
> to get_seconds" help, or is it still too opaque (or even still
> nonsense?).
> 

Where is corresponding smp_wmb() ? It's not obvious, so you must add a
comment to help reader of this code.



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