netdev - [PATCH 2/4] cxgb3: rtnl_lock out of loop will be faster

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Wed, 12 Dec 2007 16:47:25 +0800
From:	Wang Chen <wangchen@...fujitsu.com>
To:	"David S. Miller" <davem@...emloft.net>,
	Jeff Garzik <jgarzik@...ox.com>
CC:	netdev@...r.kernel.org, Wang Chen <wangchen@...fujitsu.com>
Subject: [PATCH 2/4] cxgb3: rtnl_lock out of loop will be faster

[PATCH 2/4] [NETDEV] cxgb3: 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@...fujitsu.com>
---
 cxgb3_main.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

--- linux-2.6.24.rc5.org/drivers/net/cxgb3/cxgb3_main.c	2007-12-12 10:19:39.000000000 +0800
+++ linux-2.6.24.rc5/drivers/net/cxgb3/cxgb3_main.c	2007-12-12 15:19:15.000000000 +0800
@@ -2584,9 +2584,11 @@ static void __devexit remove_one(struct 
 		sysfs_remove_group(&adapter->port[0]->dev.kobj,
 				   &cxgb3_attr_group);
 
+		rtnl_lock();
 		for_each_port(adapter, i)
 		    if (test_bit(i, &adapter->registered_device_map))
-			unregister_netdev(adapter->port[i]);
+			unregister_netdevice(adapter->port[i]);
+		rtnl_unlock();
 
 		if (is_offload(adapter)) {
 			cxgb3_adapter_unofld(adapter);

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html