50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
Subject: sched-might-sleep-do-not-account-rcu-depth.patch
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Tue, 07 Jun 2011 09:19:06 +0200
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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include/linux/rcupdate.h | 7 +++++++
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kernel/sched.c | 3 ++-
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2 files changed, 9 insertions(+), 1 deletion(-)
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Index: linux-3.2/include/linux/rcupdate.h
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===================================================================
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--- linux-3.2.orig/include/linux/rcupdate.h
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+++ linux-3.2/include/linux/rcupdate.h
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@@ -147,6 +147,11 @@ void synchronize_rcu(void);
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* types of kernel builds, the rcu_read_lock() nesting depth is unknowable.
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*/
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#define rcu_preempt_depth() (current->rcu_read_lock_nesting)
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+#ifndef CONFIG_PREEMPT_RT_FULL
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+#define sched_rcu_preempt_depth() rcu_preempt_depth()
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+#else
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+static inline int sched_rcu_preempt_depth(void) { return 0; }
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+#endif
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#else /* #ifdef CONFIG_PREEMPT_RCU */
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@@ -170,6 +175,8 @@ static inline int rcu_preempt_depth(void
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return 0;
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}
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+#define sched_rcu_preempt_depth() rcu_preempt_depth()
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+
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#endif /* #else #ifdef CONFIG_PREEMPT_RCU */
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/* Internal to kernel */
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Index: linux-3.2/kernel/sched.c
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===================================================================
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--- linux-3.2.orig/kernel/sched.c
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+++ linux-3.2/kernel/sched.c
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@@ -8429,7 +8429,8 @@ void __init sched_init(void)
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#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
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static inline int preempt_count_equals(int preempt_offset)
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{
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- int nested = (preempt_count() & ~PREEMPT_ACTIVE) + rcu_preempt_depth();
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+ int nested = (preempt_count() & ~PREEMPT_ACTIVE) +
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+ sched_rcu_preempt_depth();
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return (nested == preempt_offset);
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}
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