From: Wang Chen <wangchen@cn.fujitsu.com>
To: "David S. Miller" <davem@davemloft.net>, Jeff Garzik <jgarzik@pobox.com>
Cc: shemminger@linux-foundation.org, netdev@vger.kernel.org,
Wang Chen <wangchen@cn.fujitsu.com>
Subject: [PATCH 4/4] sky2: rtnl_lock out of loop will be faster
Date: Wed, 12 Dec 2007 16:50:09 +0800 [thread overview]
Message-ID: <475FA0C1.8000701@cn.fujitsu.com> (raw)
[PATCH 4/4] [NETDEV] sky2: rtnl_lock out of loop will be faster
Before this patch, it gets and releases the lock at each
iteration of the loop. Changing unregister_netdev to
unregister_netdevice and locking outside of the loop will
be faster for this approach.
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
---
sky2.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
--- linux-2.6.24.rc5.org/drivers/net/sky2.c 2007-12-12 10:19:43.000000000 +0800
+++ linux-2.6.24.rc5/drivers/net/sky2.c 2007-12-12 15:23:37.000000000 +0800
@@ -4270,8 +4270,10 @@ static void __devexit sky2_remove(struct
del_timer_sync(&hw->watchdog_timer);
cancel_work_sync(&hw->restart_work);
+ rtnl_lock();
for (i = hw->ports-1; i >= 0; --i)
- unregister_netdev(hw->dev[i]);
+ unregister_netdevice(hw->dev[i]);
+ rtnl_unlock();
sky2_write32(hw, B0_IMSK, 0);
next reply other threads:[~2007-12-12 8:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-12 8:50 Wang Chen [this message]
2007-12-12 16:30 ` [PATCH 4/4] sky2: rtnl_lock out of loop will be faster Stephen Hemminger
2007-12-13 6:26 ` Wang Chen
2007-12-14 21:17 ` Jeff Garzik
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