From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiang Liu Date: Mon, 17 Aug 2015 03:19:01 +0000 Subject: [Patch V3 4/9] openvswitch: Replace cpu_to_node() with cpu_to_mem() to support memoryless node Message-Id: <1439781546-7217-5-git-send-email-jiang.liu@linux.intel.com> List-Id: References: <1439781546-7217-1-git-send-email-jiang.liu@linux.intel.com> In-Reply-To: <1439781546-7217-1-git-send-email-jiang.liu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Andrew Morton , Mel Gorman , David Rientjes , Mike Galbraith , Peter Zijlstra , "Rafael J . Wysocki" , Tang Chen , Tejun Heo , Pravin Shelar , "David S. Miller" Cc: Jiang Liu , Tony Luck , linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, netdev@vger.kernel.org, dev@openvswitch.org Function ovs_flow_stats_update() allocates memory with __GFP_THISNODE flag set, which may cause permanent memory allocation failure on memoryless node. So replace cpu_to_node() with cpu_to_mem() to better support memoryless node. For node with memory, cpu_to_mem() is the same as cpu_to_node(). This change only affects performance and shouldn't affect functionality. Signed-off-by: Jiang Liu --- net/openvswitch/flow.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index bc7b0aba994a..e50a5681d0c2 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -69,7 +69,7 @@ void ovs_flow_stats_update(struct sw_flow *flow, __be16 tcp_flags, const struct sk_buff *skb) { struct flow_stats *stats; - int node = numa_node_id(); + int node = numa_mem_id(); int len = skb->len + (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0); stats = rcu_dereference(flow->stats[node]); -- 1.7.10.4