From: Chris Wright <chrisw@osdl.org>
To: linux-kernel@vger.kernel.org
Cc: torvalds@osdl.org
Subject: [PATCH 5/13] use cpu_relax() in busy loop
Date: Thu, 18 Sep 2003 16:33:11 -0700 [thread overview]
Message-ID: <20030918163311.I16499@osdlab.pdx.osdl.net> (raw)
In-Reply-To: <20030918163156.H16499@osdlab.pdx.osdl.net>; from chrisw@osdl.org on Thu, Sep 18, 2003 at 04:31:56PM -0700
Replace busy loop nop with cpu_relax().
===== drivers/char/isicom.c 1.25 vs edited =====
--- 1.25/drivers/char/isicom.c Mon Aug 18 10:39:47 2003
+++ edited/drivers/char/isicom.c Thu Sep 18 10:54:12 2003
@@ -153,12 +153,14 @@
inw(base+0x8);
- for(i=jiffies+HZ/100;time_before(jiffies, i););
+ for(i=jiffies+HZ/100;time_before(jiffies, i);)
+ cpu_relax();
outw(0,base+0x8); /* Reset */
for(j=1;j<=3;j++) {
- for(i=jiffies+HZ;time_before(jiffies, i););
+ for(i=jiffies+HZ;time_before(jiffies, i);)
+ cpu_relax();
printk(".");
}
signature=(inw(base+0x4)) & 0xff;
next prev parent reply other threads:[~2003-09-18 23:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-18 23:25 [PATCH 1/13] " Chris Wright
2003-09-18 23:27 ` [PATCH 2/13] " Chris Wright
2003-09-18 23:29 ` [PATCH 3/13] " Chris Wright
2003-09-18 23:31 ` [PATCH 4/13] " Chris Wright
2003-09-18 23:33 ` Chris Wright [this message]
2003-09-18 23:34 ` [PATCH 6/13] " Chris Wright
2003-09-18 23:35 ` [PATCH 7/13] " Chris Wright
2003-09-18 23:36 ` [PATCH 8/13] " Chris Wright
2003-09-18 23:37 ` [PATCH 9/13] " Chris Wright
2003-09-18 23:40 ` [PATCH 10/13] " Chris Wright
2003-09-18 23:41 ` [PATCH 11/13] " Chris Wright
2003-09-18 23:43 ` [PATCH 12/13] " Chris Wright
2003-09-18 23:46 ` [PATCH 13/13] " Chris Wright
2003-09-20 7:37 ` [PATCH 9/13] " David S. Miller
2003-09-19 7:37 ` [PATCH 7/13] " Arjan van de Ven
2003-09-19 19:49 ` Chris Wright
2003-09-19 7:34 ` [PATCH 4/13] " Arjan van de Ven
2003-09-19 19:48 ` Chris Wright
2003-09-19 19:54 ` Arjan van de Ven
2003-09-19 7:33 ` [PATCH 2/13] " Arjan van de Ven
2003-09-19 19:49 ` Chris Wright
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