From: Krishna Kumar <krkumar2@in.ibm.com>
To: netdev@vger.kernel.org
Cc: krkumar2@in.ibm.com, Krishna Kumar <krkumar2@in.ibm.com>
Subject: [PATCH] core: Call net_tx_action only if work pending
Date: Tue, 08 May 2007 13:01:30 +0530 [thread overview]
Message-ID: <20070508073130.17546.91346.sendpatchset@localhost.localdomain> (raw)
Optimize call to net_tx_action only if work is pending.
Patch against net-2.6.22.git
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
---
diff -ruNp org/net/core/dev.c new/net/core/dev.c
--- org/net/core/dev.c 2007-04-09 12:43:15.000000000 +0530
+++ new/net/core/dev.c 2007-04-09 12:43:42.000000000 +0530
@@ -3474,7 +3474,8 @@ static int dev_cpu_callback(struct notif
*list_net = oldsd->output_queue;
oldsd->output_queue = NULL;
- raise_softirq_irqoff(NET_TX_SOFTIRQ);
+ if (sd->completion_queue || sd->output_queue)
+ raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_enable();
/* Process offline CPU's input_pkt_queue */
next reply other threads:[~2007-05-08 7:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-08 7:31 Krishna Kumar [this message]
2007-05-09 1:59 ` [PATCH] core: Call net_tx_action only if work pending David Miller
2007-05-09 4:24 ` Krishna Kumar2
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