Patchwork [v3,4/9] net: openvswitch: use this_cpu_ptr per-cpu helper

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Submitter Shan Wei
Date Nov. 9, 2012, 2:21 a.m.
Message ID <509C6895.6020300@gmail.com>
Download mbox | patch
Permalink /patch/197915/
State Not Applicable
Delegated to: David Miller
Headers show

Comments

Shan Wei - Nov. 9, 2012, 2:21 a.m.
From: Shan Wei <davidshan@tencent.com>

just use more faster this_cpu_ptr instead of per_cpu_ptr(p, smp_processor_id());


Signed-off-by: Shan Wei <davidshan@tencent.com>
---
no changes vs v2.
---
 net/openvswitch/datapath.c |    4 ++--
 net/openvswitch/vport.c    |    5 ++---
 2 files changed, 4 insertions(+), 5 deletions(-)
Christoph Lameter - Nov. 9, 2012, 8:12 p.m.
On Fri, 9 Nov 2012, Shan Wei wrote:

> just use more faster this_cpu_ptr instead of per_cpu_ptr(p, smp_processor_id());

Reviewed-by: Christoph Lameter <cl@linux.com>
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Patch

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 4c4b62c..77d16a5 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -208,7 +208,7 @@  void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb)
 	int error;
 	int key_len;
 
-	stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id());
+	stats = this_cpu_ptr(dp->stats_percpu);
 
 	/* Extract flow from 'skb' into 'key'. */
 	error = ovs_flow_extract(skb, p->port_no, &key, &key_len);
@@ -282,7 +282,7 @@  int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb,
 	return 0;
 
 err:
-	stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id());
+	stats = this_cpu_ptr(dp->stats_percpu);
 
 	u64_stats_update_begin(&stats->sync);
 	stats->n_lost++;
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 03779e8..70af0be 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -333,8 +333,7 @@  void ovs_vport_receive(struct vport *vport, struct sk_buff *skb)
 {
 	struct vport_percpu_stats *stats;
 
-	stats = per_cpu_ptr(vport->percpu_stats, smp_processor_id());
-
+	stats = this_cpu_ptr(vport->percpu_stats);
 	u64_stats_update_begin(&stats->sync);
 	stats->rx_packets++;
 	stats->rx_bytes += skb->len;
@@ -359,7 +358,7 @@  int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
 	if (likely(sent)) {
 		struct vport_percpu_stats *stats;
 
-		stats = per_cpu_ptr(vport->percpu_stats, smp_processor_id());
+		stats = this_cpu_ptr(vport->percpu_stats);
 
 		u64_stats_update_begin(&stats->sync);
 		stats->tx_packets++;