X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fsoftlockup.c;h=c828c2339cc9e8a8992df52f31756f8894c7f6b1;hb=9aef85cc58f54f01bbbafdb3c87af4465f4257c0;hp=7c2da88db4eddf6539673357b01d94b543aac52c;hpb=acf63867ae06ef95eea7bf445ded2f05528a81b1;p=pandora-kernel.git

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 7c2da88db4ed..c828c2339cc9 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -49,12 +49,17 @@ static unsigned long get_timestamp(int this_cpu)
 	return cpu_clock(this_cpu) >> 30LL;  /* 2^30 ~= 10^9 */
 }
 
-void touch_softlockup_watchdog(void)
+static void __touch_softlockup_watchdog(void)
 {
 	int this_cpu = raw_smp_processor_id();
 
 	__raw_get_cpu_var(touch_timestamp) = get_timestamp(this_cpu);
 }
+
+void touch_softlockup_watchdog(void)
+{
+	__raw_get_cpu_var(touch_timestamp) = 0;
+}
 EXPORT_SYMBOL(touch_softlockup_watchdog);
 
 void touch_all_softlockup_watchdogs(void)
@@ -80,7 +85,7 @@ void softlockup_tick(void)
 	unsigned long now;
 
 	if (touch_timestamp == 0) {
-		touch_softlockup_watchdog();
+		__touch_softlockup_watchdog();
 		return;
 	}
 
@@ -95,7 +100,7 @@ void softlockup_tick(void)
 
 	/* do not print during early bootup: */
 	if (unlikely(system_state != SYSTEM_RUNNING)) {
-		touch_softlockup_watchdog();
+		__touch_softlockup_watchdog();
 		return;
 	}
 
@@ -214,28 +219,29 @@ static int watchdog(void *__bind_cpu)
 	sched_setscheduler(current, SCHED_FIFO, &param);
 
 	/* initialize timestamp */
-	touch_softlockup_watchdog();
+	__touch_softlockup_watchdog();
 
+	set_current_state(TASK_INTERRUPTIBLE);
 	/*
 	 * Run briefly once per second to reset the softlockup timestamp.
 	 * If this gets delayed for more than 60 seconds then the
 	 * debug-printout triggers in softlockup_tick().
 	 */
 	while (!kthread_should_stop()) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		touch_softlockup_watchdog();
+		__touch_softlockup_watchdog();
 		schedule();
 
 		if (kthread_should_stop())
 			break;
 
-		if (this_cpu != check_cpu)
-			continue;
-
-		if (sysctl_hung_task_timeout_secs)
-			check_hung_uninterruptible_tasks(this_cpu);
+		if (this_cpu == check_cpu) {
+			if (sysctl_hung_task_timeout_secs)
+				check_hung_uninterruptible_tasks(this_cpu);
+		}
 
+		set_current_state(TASK_INTERRUPTIBLE);
 	}
+	__set_current_state(TASK_RUNNING);
 
 	return 0;
 }