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 <[email protected]>
Acked-by: Tejun Heo <[email protected]>
cc: Ingo Molnar <[email protected]>
cc: Rusty Russell <[email protected]>
cc: Eric Dumazet <[email protected]>
Signed-off-by: Christoph Lameter <[email protected]>
---
drivers/infiniband/hw/ehca/ehca_irq.c | 3 +--
drivers/net/chelsio/sge.c | 5 ++---
drivers/net/loopback.c | 2 +-
fs/ext4/mballoc.c | 2 +-
4 files changed, 5 insertions(+), 7 deletions(-)
Index: linux-2.6/drivers/net/chelsio/sge.c
===================================================================
--- linux-2.6.orig/drivers/net/chelsio/sge.c 2009-09-29 09:31:40.000000000 -0500
+++ linux-2.6/drivers/net/chelsio/sge.c 2009-09-29 11:39:20.000000000 -0500
@@ -1378,7 +1378,7 @@ static void sge_rx(struct sge *sge, stru
}
__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
{
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;
Index: linux-2.6/drivers/net/loopback.c
===================================================================
--- linux-2.6.orig/drivers/net/loopback.c 2009-09-29 09:31:40.000000000 -0500
+++ linux-2.6/drivers/net/loopback.c 2009-09-29 11:39:20.000000000 -0500
@@ -81,7 +81,7 @@ static netdev_tx_t loopback_xmit(struct
/* 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)) {
Index: linux-2.6/fs/ext4/mballoc.c
===================================================================
--- linux-2.6.orig/fs/ext4/mballoc.c 2009-09-29 09:31:40.000000000 -0500
+++ linux-2.6/fs/ext4/mballoc.c 2009-09-29 11:39:20.000000000 -0500
@@ -4210,7 +4210,7 @@ static void ext4_mb_group_or_file(struct
* 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;
Index: linux-2.6/drivers/infiniband/hw/ehca/ehca_irq.c
===================================================================
--- linux-2.6.orig/drivers/infiniband/hw/ehca/ehca_irq.c 2009-09-29 09:31:40.000000000 -0500
+++ linux-2.6/drivers/infiniband/hw/ehca/ehca_irq.c 2009-09-29 11:39:20.000000000 -0500
@@ -826,8 +826,7 @@ static void __cpuinit take_over_work(str
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);
--