this_cpu: Use this_cpu_ptr in crypto subsystem
Christoph Lameter [Sat, 3 Oct 2009 10:48:23 +0000 (19:48 +0900)]
Just a slight optimization that removes one array lookup.
The processor number is needed for other things as well so the
get/put_cpu cannot be removed.

Acked-by: Tejun Heo <tj@kernel.org>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

crypto/cryptd.c

index 3533582..3d7fe83 100644 (file)
@@ -99,7 +99,7 @@ static int cryptd_enqueue_request(struct cryptd_queue *queue,
        struct cryptd_cpu_queue *cpu_queue;
 
        cpu = get_cpu();
-       cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
+       cpu_queue = this_cpu_ptr(queue->cpu_queue);
        err = crypto_enqueue_request(&cpu_queue->queue, request);
        queue_work_on(cpu, kcrypto_wq, &cpu_queue->work);
        put_cpu();