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-rw-r--r--kernel/softlockup.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 01b6522fd92b..c828c2339cc9 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -49,12 +49,17 @@ static unsigned long get_timestamp(int this_cpu)
49 return cpu_clock(this_cpu) >> 30LL; /* 2^30 ~= 10^9 */ 49 return cpu_clock(this_cpu) >> 30LL; /* 2^30 ~= 10^9 */
50} 50}
51 51
52void touch_softlockup_watchdog(void) 52static void __touch_softlockup_watchdog(void)
53{ 53{
54 int this_cpu = raw_smp_processor_id(); 54 int this_cpu = raw_smp_processor_id();
55 55
56 __raw_get_cpu_var(touch_timestamp) = get_timestamp(this_cpu); 56 __raw_get_cpu_var(touch_timestamp) = get_timestamp(this_cpu);
57} 57}
58
59void touch_softlockup_watchdog(void)
60{
61 __raw_get_cpu_var(touch_timestamp) = 0;
62}
58EXPORT_SYMBOL(touch_softlockup_watchdog); 63EXPORT_SYMBOL(touch_softlockup_watchdog);
59 64
60void touch_all_softlockup_watchdogs(void) 65void touch_all_softlockup_watchdogs(void)
@@ -80,7 +85,7 @@ void softlockup_tick(void)
80 unsigned long now; 85 unsigned long now;
81 86
82 if (touch_timestamp == 0) { 87 if (touch_timestamp == 0) {
83 touch_softlockup_watchdog(); 88 __touch_softlockup_watchdog();
84 return; 89 return;
85 } 90 }
86 91
@@ -95,7 +100,7 @@ void softlockup_tick(void)
95 100
96 /* do not print during early bootup: */ 101 /* do not print during early bootup: */
97 if (unlikely(system_state != SYSTEM_RUNNING)) { 102 if (unlikely(system_state != SYSTEM_RUNNING)) {
98 touch_softlockup_watchdog(); 103 __touch_softlockup_watchdog();
99 return; 104 return;
100 } 105 }
101 106
@@ -214,7 +219,7 @@ static int watchdog(void *__bind_cpu)
214 sched_setscheduler(current, SCHED_FIFO, &param); 219 sched_setscheduler(current, SCHED_FIFO, &param);
215 220
216 /* initialize timestamp */ 221 /* initialize timestamp */
217 touch_softlockup_watchdog(); 222 __touch_softlockup_watchdog();
218 223
219 set_current_state(TASK_INTERRUPTIBLE); 224 set_current_state(TASK_INTERRUPTIBLE);
220 /* 225 /*
@@ -223,7 +228,7 @@ static int watchdog(void *__bind_cpu)
223 * debug-printout triggers in softlockup_tick(). 228 * debug-printout triggers in softlockup_tick().
224 */ 229 */
225 while (!kthread_should_stop()) { 230 while (!kthread_should_stop()) {
226 touch_softlockup_watchdog(); 231 __touch_softlockup_watchdog();
227 schedule(); 232 schedule();
228 233
229 if (kthread_should_stop()) 234 if (kthread_should_stop())