From: Christoph Lameter <cl@linux.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] percpu_counter: change inaccurate comment
Date: Thu, 7 Oct 2010 15:13:48 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1010071509180.28032@router.home> (raw)
In-Reply-To: <1286481860.3745.30.camel@edumazet-laptop>
On Thu, 7 Oct 2010, Eric Dumazet wrote:
> If enclosed by preempt_disable()/preempt_enable(), maybe we could use
> __this_cpu_ptr() ?
The only difference between __this_cpu_ptr and this_cpu_ptr is that
this_cpu_ptr checks that preempt was disabled. __this_cpu_ptr allows use
even without preempt. Preempt must be disabled here so the use of
this_cpu_ptr is appropriate.
next prev parent reply other threads:[~2010-10-07 20:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-07 16:37 Eric Dumazet
2010-10-07 19:42 ` Christoph Lameter
2010-10-07 20:04 ` Eric Dumazet
2010-10-07 20:13 ` Christoph Lameter [this message]
2010-10-07 20:42 ` Eric Dumazet
2010-10-07 21:06 ` Christoph Lameter
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