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-rw-r--r--include/linux/sched.h4
-rw-r--r--kernel/sched/core.c2
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index f00ee8e90a29..b99fcd1b341e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -3209,7 +3209,11 @@ static inline int signal_pending_state(long state, struct task_struct *p)
* cond_resched_lock() will drop the spinlock before scheduling,
* cond_resched_softirq() will enable bhs before scheduling.
*/
+#ifndef CONFIG_PREEMPT
extern int _cond_resched(void);
+#else
+static inline int _cond_resched(void) { return 0; }
+#endif
#define cond_resched() ({ \
___might_sleep(__FILE__, __LINE__, 0); \
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b2ec53c1a974..d7babcc7cb76 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4883,6 +4883,7 @@ SYSCALL_DEFINE0(sched_yield)
return 0;
}
+#ifndef CONFIG_PREEMPT
int __sched _cond_resched(void)
{
if (should_resched(0)) {
@@ -4892,6 +4893,7 @@ int __sched _cond_resched(void)
return 0;
}
EXPORT_SYMBOL(_cond_resched);
+#endif
/*
* __cond_resched_lock() - if a reschedule is pending, drop the given lock,