From: akpm@osdl.org <akpm@osdl.org>
Date: Tue, 27 Jun 2006 09:54:04 +0000 (-0700)
Subject: [PATCH] IPMI: use schedule in kthread
X-Git-Tag: firefly_0821_release~34923
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=33979734cd35ae0624337cdbc529921e4350d96f;p=firefly-linux-kernel-4.4.55.git

[PATCH] IPMI: use schedule in kthread

Corey Minyard <minyard@acm.org>

The kthread used to speed up polling for IPMI was using udelay in its
busy-wait polling loop when the lower-level state machine told it to do a
short delay.  This just used CPU and didn't help scheduling, thus causing
bad problems with other tasks.  Call schedule() instead.

Signed-off-by: Corey Minyard <minyard@acm.org>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 02a7dd7a8a55..101c14b9b26d 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -809,7 +809,7 @@ static int ipmi_thread(void *data)
 			/* do nothing */
 		}
 		else if (smi_result == SI_SM_CALL_WITH_DELAY)
-			udelay(1);
+			schedule();
 		else
 			schedule_timeout_interruptible(1);
 	}