From: Tejun Heo <tj@kernel.org>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, rusty@rustcorp.com.au,
mingo@redhat.com, tglx@linutronix.de, akpm@linux-foundation.org,
rostedt@goodmis.org, hpa@zytor.com, cebbert@redhat.com
Subject: Re: [PATCH 14/16] percpu: make access macros universal
Date: Thu, 15 Oct 2009 18:27:36 +0900 [thread overview]
Message-ID: <4AD6EB08.9070303@kernel.org> (raw)
In-Reply-To: <alpine.DEB.1.10.0910141037210.26476@gentwo.org>
Christoph Lameter wrote:
> On Wed, 14 Oct 2009, Tejun Heo wrote:
>
>> @@ -182,17 +185,19 @@ static inline void *pcpu_lpage_remapped(void *kaddr)
>> #ifndef percpu_read
>> # define percpu_read(var) \
>> ({ \
>> - typeof(var) __tmp_var__; \
>> - __tmp_var__ = get_cpu_var(var); \
>> - put_cpu_var(var); \
>> - __tmp_var__; \
>> + typeof(var) *pr_ptr__ = &(var); \
>> + typeof(var) pr_ret__; \
>> + pr_ret__ = get_cpu_var(*pr_ptr__); \
>> + put_cpu_var(*pr_ptr__); \
>> + pr_ret__; \
>> })
>> #endif
>
> == this_cpu_read(var) ?
Yeah, all these extra and duplicate accessors need to go away. Once
dust around this patchset settles down. That's the next thing to do.
Thanks.
--
tejun
next prev parent reply other threads:[~2009-10-15 9:29 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-14 6:01 [RFC percpu#for-next] percpu: drop per_cpu__ prefix and add sparse annotations, take#2 Tejun Heo
2009-10-14 6:01 ` [PATCH 01/16] vmalloc: fix use of non-existent percpu variable in put_cpu_var() Tejun Heo
2009-10-14 15:06 ` Christoph Lameter
2009-10-15 9:10 ` Tejun Heo
2009-10-14 6:01 ` [PATCH 02/16] percpu: make alloc_percpu() handle array types Tejun Heo
2009-10-14 6:01 ` [PATCH 03/16] percpu: remove some sparse warnings Tejun Heo
2009-10-14 14:20 ` Christoph Lameter
2009-10-14 6:01 ` [PATCH 04/16] percpu: make percpu symbols under kernel/ and mm/ unique Tejun Heo
2009-10-14 6:01 ` [PATCH 05/16] percpu: make percpu symbols in tracer unique Tejun Heo
2009-10-14 6:01 ` [PATCH 06/16] percpu: make percpu symbols in oprofile unique Tejun Heo
2009-10-14 6:01 ` [PATCH 07/16] percpu: make percpu symbols in cpufreq unique Tejun Heo
2009-10-14 6:01 ` [PATCH 08/16] percpu: make percpu symbols in xen unique Tejun Heo
2009-10-14 6:01 ` [PATCH 09/16] percpu: make percpu symbols in x86 unique Tejun Heo
2009-10-14 6:01 ` [PATCH 10/16] percpu: make percpu symbols in powerpc unique Tejun Heo
2009-10-27 3:19 ` Benjamin Herrenschmidt
2009-10-14 6:02 ` [PATCH 11/16] percpu: make percpu symbols in ia64 unique Tejun Heo
2009-10-14 6:02 ` [PATCH 12/16] percpu: make misc percpu symbols unique Tejun Heo
2009-10-14 6:02 ` [PATCH 13/16] percpu: remove per_cpu__ prefix Tejun Heo
2009-10-14 14:36 ` Christoph Lameter
2009-10-14 16:42 ` Luck, Tony
2009-10-14 17:38 ` H. Peter Anvin
2009-10-14 18:26 ` Christoph Lameter
2009-10-15 8:57 ` Tejun Heo
2009-10-14 18:22 ` Christoph Lameter
2009-10-14 18:36 ` Luck, Tony
2009-10-14 18:51 ` Christoph Lameter
2009-10-15 8:51 ` Tejun Heo
2009-10-16 16:23 ` Christoph Lameter
2009-10-15 9:24 ` Tejun Heo
2009-10-16 6:04 ` Michal Simek
2009-10-18 2:58 ` Tejun Heo
2009-10-19 13:41 ` Michal Simek
2009-10-29 11:11 ` Tejun Heo
2009-11-02 16:35 ` Michal Simek
2009-10-19 13:40 ` Michal Simek
2009-10-29 12:06 ` Tejun Heo
2009-10-14 6:02 ` [PATCH 14/16] percpu: make access macros universal Tejun Heo
2009-10-14 14:38 ` Christoph Lameter
2009-10-15 9:27 ` Tejun Heo [this message]
2009-10-14 6:02 ` [PATCH 15/16] percpu: add __percpu for sparse Tejun Heo
2009-10-14 6:02 ` [PATCH 16/16] percpu: make accessors check for percpu pointer in sparse Tejun Heo
2009-10-14 14:41 ` Christoph Lameter
2009-10-15 9:08 ` Tejun Heo
2009-10-29 13:40 ` [RFC percpu#for-next] percpu: drop per_cpu__ prefix and add sparse annotations, take#2 Tejun Heo
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