* [PATCH v3 5/9] kernel: padata : use __this_cpu_read per-cpu helper
@ 2012-11-09 2:21 Shan Wei
2012-11-09 20:13 ` Christoph Lameter
0 siblings, 1 reply; 2+ messages in thread
From: Shan Wei @ 2012-11-09 2:21 UTC (permalink / raw)
To: steffen.klassert, Kernel-Maillist, linux-crypto, cl, Shan Wei
From: Shan Wei <davidshan@tencent.com>
For bottom halves off, __this_cpu_read is better.
Signed-off-by: Shan Wei <davidshan@tencent.com>
---
v3: use __this_cpu_read instead of this_cpu_read.
---
kernel/padata.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/kernel/padata.c b/kernel/padata.c
index 89fe3d1..072f4ee 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -171,7 +171,7 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
{
int cpu, num_cpus;
unsigned int next_nr, next_index;
- struct padata_parallel_queue *queue, *next_queue;
+ struct padata_parallel_queue *next_queue;
struct padata_priv *padata;
struct padata_list *reorder;
@@ -204,8 +204,7 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
goto out;
}
- queue = per_cpu_ptr(pd->pqueue, smp_processor_id());
- if (queue->cpu_index == next_queue->cpu_index) {
+ if (__this_cpu_read(pd->pqueue->cpu_index) == next_queue->cpu_index) {
padata = ERR_PTR(-ENODATA);
goto out;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v3 5/9] kernel: padata : use __this_cpu_read per-cpu helper
2012-11-09 2:21 [PATCH v3 5/9] kernel: padata : use __this_cpu_read per-cpu helper Shan Wei
@ 2012-11-09 20:13 ` Christoph Lameter
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Lameter @ 2012-11-09 20:13 UTC (permalink / raw)
To: Shan Wei; +Cc: steffen.klassert, Kernel-Maillist, linux-crypto
On Fri, 9 Nov 2012, Shan Wei wrote:
> For bottom halves off, __this_cpu_read is better.
Reviewed-by: Christoph Lameter <cl@linux.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-11-09 20:13 ` Christoph Lameter
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