netdev - [PATCH] sch_generic.c: Make dev_watchdog use deferrable timer

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Message-ID: <Pine.LNX.4.64.0712181956180.3616@mini.warudkars.net>
Date:	Tue, 18 Dec 2007 20:04:23 -0500 (EST)
From:	Parag Warudkar <parag.warudkar@...il.com>
To:	netdev@...r.kernel.org
cc:	davem@...emloft.net, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: [PATCH] sch_generic.c: Make dev_watchdog use deferrable timer


Reduces the number of wakeups from idle per second, makes powertop happy.

Signed-off-by: Parag Warudkar <parag.warudkar@...il.com>

--- linux-2.6/net/sched/sch_generic.c	2007-12-07 10:04:43.000000000 -0500
+++ linux-2.6-work/net/sched/sch_generic.c	2007-12-16 17:57:05.000000000 -0500
@@ -213,7 +213,7 @@

  static void dev_watchdog_init(struct net_device *dev)
  {
-	init_timer(&dev->watchdog_timer);
+	init_timer_deferrable(&dev->watchdog_timer);
  	dev->watchdog_timer.data = (unsigned long)dev;
  	dev->watchdog_timer.function = dev_watchdog;
  }
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