linux-kernel - [PATCH 07/13] Add might_fault_debug

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Date:	Fri,  9 Aug 2013 16:04:14 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org
Cc:	x86@...nel.org, mingo@...nel.org, torvalds@...ux-foundation.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 07/13] Add might_fault_debug_only()

From: Andi Kleen <ak@...ux.intel.com>

Add a might_fault_debug_only() that only does something in the PROVE_LOCKING
case, but does not cond_resched for PREEMPT_VOLUNTARY. This is for
cases when the cond_resched is done elsewhere

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 include/linux/sched.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 773f21d..bb7a08a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2473,11 +2473,13 @@ static inline void cond_resched_rcu(void)
 
 #ifdef CONFIG_PROVE_LOCKING
 void might_fault(void);
+#define might_fault_debug_only() might_fault()
 #else
 static inline void might_fault(void)
 {
 	might_sleep();
 }
+#define might_fault_debug_only() do {} while(0)
 #endif
 
 /*
-- 
1.8.3.1

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