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Subject: cond-resched-softirq-fix.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 14 Jul 2011 09:56:44 +0200
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/sched.h | 4 ++++
kernel/sched/core.c | 2 ++
2 files changed, 6 insertions(+)
Index: linux-3.4/include/linux/sched.h
===================================================================
--- linux-3.4.orig/include/linux/sched.h
+++ linux-3.4/include/linux/sched.h
@@ -2700,12 +2700,16 @@ extern int __cond_resched_lock(spinlock_
__cond_resched_lock(lock); \
})
+#ifndef CONFIG_PREEMPT_RT_FULL
extern int __cond_resched_softirq(void);
#define cond_resched_softirq() ({ \
__might_sleep(__FILE__, __LINE__, SOFTIRQ_DISABLE_OFFSET); \
__cond_resched_softirq(); \
})
+#else
+# define cond_resched_softirq() cond_resched()
+#endif
/*
* Does a critical section need to be broken due to another
Index: linux-3.4/kernel/sched/core.c
===================================================================
--- linux-3.4.orig/kernel/sched/core.c
+++ linux-3.4/kernel/sched/core.c
@@ -4605,6 +4605,7 @@ int __cond_resched_lock(spinlock_t *lock
}
EXPORT_SYMBOL(__cond_resched_lock);
+#ifndef CONFIG_PREEMPT_RT_FULL
int __sched __cond_resched_softirq(void)
{
BUG_ON(!in_softirq());
@@ -4618,6 +4619,7 @@ int __sched __cond_resched_softirq(void)
return 0;
}
EXPORT_SYMBOL(__cond_resched_softirq);
+#endif
/**
* yield - yield the current processor to other threads.
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