From: Christoph Lameter <cl@linux.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org
Subject: Re: percpu: Implement this_cpu_add,sub,dec,inc_return
Date: Fri, 19 Nov 2010 09:42:11 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.00.1011190941380.32655@router.home> (raw)
In-Reply-To: <1290018527.2687.108.camel@edumazet-laptop>
On Wed, 17 Nov 2010, Eric Dumazet wrote:
> diff --git a/include/linux/highmem.h b/include/linux/highmem.h
> index b676c58..bb5db26 100644
> --- a/include/linux/highmem.h
> +++ b/include/linux/highmem.h
> @@ -91,7 +91,7 @@ static inline int kmap_atomic_idx_push(void)
>
> static inline int kmap_atomic_idx(void)
> {
> - return __get_cpu_var(__kmap_atomic_idx) - 1;
> + return __this_cpu_read(__kmap_atomic_idx) - 1;
> }
>
> static inline int kmap_atomic_idx_pop(void)
This isnt a use case for this_cpu_dec right? Seems that your message was
cut off?
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next prev parent reply other threads:[~2010-11-19 15:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-09 17:27 vmstat: Optimize zone counter modifications through the use of this cpu operations Christoph Lameter
2010-11-10 15:40 ` percpu: Implement this_cpu_add,sub,dec,inc_return Christoph Lameter
2010-11-17 18:28 ` Eric Dumazet
2010-11-19 15:42 ` Christoph Lameter [this message]
2010-11-19 15:51 ` Eric Dumazet
2010-11-19 15:59 ` Christoph Lameter
2010-11-19 16:12 ` Eric Dumazet
2010-11-19 17:09 ` Christoph Lameter
2010-11-19 17:59 ` Christoph Lameter
2010-11-20 9:50 ` Eric Dumazet
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