luck/tmp_suning_uos_patched
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this_cpu: Straight transformations

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Use this_cpu_ptr and __this_cpu_ptr in locations where straight
transformations are possible because per_cpu_ptr is used with
either smp_processor_id() or raw_smp_processor_id().

cc: David Howells <dhowells@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
cc: Ingo Molnar <mingo@elte.hu>
cc: Rusty Russell <rusty@rustcorp.com.au>
cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Christoph Lameter 2009-10-03 19:48:22 +09:00 committed by Tejun Heo
parent 4ea7334b6d
commit ca0c9584b1
4 changed files with 5 additions and 7 deletions
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3
drivers/infiniband/hw/ehca/ehca_irq.c
View File

@ -826,8 +826,7 @@ static void __cpuinit take_over_work(struct ehca_comp_pool *pool, int cpu)
cq = list_entry(cct->cq_list.next, struct ehca_cq, entry);
list_del(&cq->entry);
__queue_comp_task(cq, per_cpu_ptr(pool->cpu_comp_tasks,
smp_processor_id()));
__queue_comp_task(cq, this_cpu_ptr(pool->cpu_comp_tasks));
}
spin_unlock_irqrestore(&cct->task_lock, flags_cct);

5
drivers/net/chelsio/sge.c
View File

@ -1378,7 +1378,7 @@ static void sge_rx(struct sge *sge, struct freelQ *fl, unsigned int len)
}
__skb_pull(skb, sizeof(*p));
st = per_cpu_ptr(sge->port_stats[p->iff], smp_processor_id());
st = this_cpu_ptr(sge->port_stats[p->iff]);
skb->protocol = eth_type_trans(skb, adapter->port[p->iff].dev);
if ((adapter->flags & RX_CSUM_ENABLED) && p->csum == 0xffff &&
@ -1780,8 +1780,7 @@ netdev_tx_t t1_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct adapter *adapter = dev->ml_priv;
struct sge *sge = adapter->sge;
struct sge_port_stats *st = per_cpu_ptr(sge->port_stats[dev->if_port],
smp_processor_id());
struct sge_port_stats *st = this_cpu_ptr(sge->port_stats[dev->if_port]);
struct cpl_tx_pkt *cpl;
struct sk_buff *orig_skb = skb;
int ret;

2
drivers/net/loopback.c
View File

@ -81,7 +81,7 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb,
/* it's OK to use per_cpu_ptr() because BHs are off */
pcpu_lstats = dev->ml_priv;
lb_stats = per_cpu_ptr(pcpu_lstats, smp_processor_id());
lb_stats = this_cpu_ptr(pcpu_lstats);
len = skb->len;
if (likely(netif_rx(skb) == NET_RX_SUCCESS)) {

2
fs/ext4/mballoc.c
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@ -3932,7 +3932,7 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac)
* per cpu locality group is to reduce the contention between block
* request from multiple CPUs.
*/
ac->ac_lg = per_cpu_ptr(sbi->s_locality_groups, raw_smp_processor_id());
ac->ac_lg = __this_cpu_ptr(sbi->s_locality_groups);
/* we're going to use group allocation */
ac->ac_flags |= EXT4_MB_HINT_GROUP_ALLOC;