linux-kernel - [PATCH] check_hung_task(): unsigned sysctl_hung_task

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Message-ID: <4935AEDA.5020504@gmail.com>
Date:	Tue, 02 Dec 2008 22:55:38 +0100
From:	Roel Kluin <roel.kluin@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] check_hung_task(): unsigned sysctl_hung_task_warnings cannot
 be less than 0

unsigned sysctl_hung_task_warnings cannot be less than 0

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
in kernel/softlockup.c

unsigned long __read_mostly sysctl_hung_task_warnings = 10;
...
static void check_hung_task()
{
...
        if (sysctl_hung_task_warnings < 0)
		return
        sysctl_hung_task_warnings--;

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 3953e4a..a50a5db 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -188,7 +188,7 @@ static void check_hung_task(struct task_struct *t, unsigned long now)
 	if ((long)(now - t->last_switch_timestamp) <
 					sysctl_hung_task_timeout_secs)
 		return;
-	if (sysctl_hung_task_warnings < 0)
+	if (sysctl_hung_task_warnings == -1)
 		return;
 	sysctl_hung_task_warnings--;
 

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