this_cpu: Straight transformations

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>

4 files changed, 5 insertions, 7 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 4b89b791be6a..42be0b15084b 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -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);
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 8c658cf6f62f..109d2783e4d8 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -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;
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 1bc654a73c47..8ebeb76a373d 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -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)) {
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index bba12824defa..d527fd384582 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -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;