From: cl@linux-foundation.org
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org, Tejun Heo <tj@kernel.org>,
Huang Ying <ying.huang@intel.com>,
mingo@elte.hu, rusty@rustcorp.com.au, davem@davemloft.net,
Pekka Enberg <penberg@cs.helsinki.fi>
Subject: [this_cpu_xx V3 09/19] Use this_cpu_ptr in crypto subsystem
Date: Thu, 01 Oct 2009 13:40:42 -0400 [thread overview]
Message-ID: <20091001174121.267753442@gentwo.org> (raw)
In-Reply-To: <20091001174033.576397715@gentwo.org>
[-- Attachment #1: this_cpu_ptr_crypto --]
[-- Type: text/plain, Size: 1174 bytes --]
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>
---
crypto/cryptd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/crypto/cryptd.c
===================================================================
--- linux-2.6.orig/crypto/cryptd.c 2009-09-14 08:47:15.000000000 -0500
+++ linux-2.6/crypto/cryptd.c 2009-09-15 13:47:11.000000000 -0500
@@ -99,7 +99,7 @@ static int cryptd_enqueue_request(struct
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();
--
--
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next prev parent reply other threads:[~2009-10-01 17:49 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-01 17:40 [this_cpu_xx V3 00/19] Introduce per cpu atomic operations and avoid per cpu address arithmetic cl
2009-10-01 17:40 ` [this_cpu_xx V3 01/19] Introduce this_cpu_ptr() and generic this_cpu_* operations cl
2009-10-01 17:40 ` [this_cpu_xx V3 02/19] this_cpu: X86 optimized this_cpu operations cl
2009-10-01 17:40 ` [this_cpu_xx V3 03/19] Use this_cpu operations for SNMP statistics cl
2009-10-01 17:40 ` [this_cpu_xx V3 04/19] Use this_cpu operations for NFS statistics cl
2009-10-01 17:40 ` [this_cpu_xx V3 05/19] use this_cpu ops for network statistics cl
2009-10-01 19:35 ` David Miller
2009-10-01 17:40 ` [this_cpu_xx V3 06/19] this_cpu_ptr: Straight transformations cl
2009-10-01 17:40 ` [this_cpu_xx V3 07/19] this_cpu_ptr: Eliminate get/put_cpu cl
2009-10-01 17:40 ` [this_cpu_xx V3 08/19] this_cpu_ptr: xfs_icsb_modify_counters does not need "cpu" variable cl
2009-10-01 17:40 ` cl [this message]
2009-10-01 17:40 ` [this_cpu_xx V3 10/19] Use this_cpu ops for VM statistics cl
2009-10-01 17:40 ` [this_cpu_xx V3 11/19] RCU: Use this_cpu operations cl
2009-10-01 19:17 ` Ingo Molnar
2009-10-01 17:40 ` [this_cpu_xx V3 12/19] Move early initialization of pagesets out of zone_wait_table_init() cl
2009-10-01 17:40 ` [this_cpu_xx V3 13/19] this_cpu_ops: page allocator conversion cl
2009-10-01 17:40 ` [this_cpu_xx V3 14/19] this_cpu ops: Remove pageset_notifier cl
2009-10-01 17:40 ` [this_cpu_xx V3 15/19] Use this_cpu operations in slub cl
2009-10-01 17:40 ` [this_cpu_xx V3 16/19] SLUB: Get rid of dynamic DMA kmalloc cache allocation cl
2009-10-01 17:40 ` [this_cpu_xx V3 17/19] this_cpu: Remove slub kmem_cache fields cl
2009-10-01 17:40 ` [this_cpu_xx V3 18/19] Make slub statistics use this_cpu_inc cl
2009-10-01 17:40 ` [this_cpu_xx V3 19/19] this_cpu: slub aggressive use of this_cpu operations in the hotpaths cl
2009-10-02 9:29 ` [this_cpu_xx V3 00/19] Introduce per cpu atomic operations and avoid per cpu address arithmetic Ingo Molnar
2009-10-02 9:31 ` Ingo Molnar
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