Patchwork [v3,2/9] net: rds: use this_cpu_ptr per-cpu helper

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Submitter Shan Wei
Date Nov. 9, 2012, 2:20 a.m.
Message ID <509C687E.1080106@gmail.com>
Download mbox | patch
Permalink /patch/197914/
State Not Applicable
Delegated to: David Miller
Headers show

Comments

Shan Wei - Nov. 9, 2012, 2:20 a.m.
From: Shan Wei <davidshan@tencent.com>

Signed-off-by: Shan Wei <davidshan@tencent.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
---
no changes vs v2.
---
 net/rds/ib_recv.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
Christoph Lameter - Nov. 9, 2012, 8:09 p.m.
On Fri, 9 Nov 2012, Shan Wei wrote:

>  net/rds/ib_recv.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
> index 8d19491..a4a5064 100644
> --- a/net/rds/ib_recv.c
> +++ b/net/rds/ib_recv.c
> @@ -423,7 +423,7 @@ static void rds_ib_recv_cache_put(struct list_head *new_item,
>
>  	local_irq_save(flags);
>
> -	chp = per_cpu_ptr(cache->percpu, smp_processor_id());
> +	chp = this_cpu_ptr(cache->percpu);
>  	if (!chp->first)

if (!__this_cpu_read(cache-0>percpu->first))

?

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Patch

diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 8d19491..a4a5064 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -423,7 +423,7 @@  static void rds_ib_recv_cache_put(struct list_head *new_item,
 
 	local_irq_save(flags);
 
-	chp = per_cpu_ptr(cache->percpu, smp_processor_id());
+	chp = this_cpu_ptr(cache->percpu);
 	if (!chp->first)
 		INIT_LIST_HEAD(new_item);
 	else /* put on front */