From: "Randy.Dunlap" <rddunlap@osdl.org>
To: netdev <netdev@oss.sgi.com>
Cc: jgarzik <jgarzik@pobox.com>, ollie@sis.com.tw
Subject: [janitor] sis900: don't use yield()
Date: Tue, 27 Apr 2004 10:38:07 -0700 [thread overview]
Message-ID: <20040427103807.311caa42.rddunlap@osdl.org> (raw)
From: maximilian attems <janitor@sternwelten.at>
thanks to Felipe W Damasio hint rediffed.
patch is on top of linux-2.6.6-rc2
yield() removes process from active array into expired array,
better just yield the CPU for a bit.
tested on my laptop with a sis900.
a++ maks
Index: linux-266-rc2-kj1/drivers/net/sis900.c
===================================================================
--- linux-266-rc2-kj1.orig/drivers/net/sis900.c 2004-04-03 19:36:57.000000000 -0800
+++ linux-266-rc2-kj1/drivers/net/sis900.c 2004-04-21 15:32:56.000000000 -0700
@@ -600,7 +600,8 @@ static int __init sis900_mii_probe (stru
if(status & MII_STAT_LINK){
while (poll_bit) {
- yield();
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ/100);
poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
if (time_after_eq(jiffies, timeout)) {
--
next reply other threads:[~2004-04-27 17:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-27 17:38 Randy.Dunlap [this message]
2004-04-27 18:03 ` [janitor] sis900: don't use yield() Jeff Garzik
2004-04-27 18:28 ` [janitor] sis900: don't use yield() (v2) Randy.Dunlap
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