From: Pranith Kumar <bobby.prani@gmail.com>
Date: Thu, 25 Sep 2014 18:03:34 +0000 (-0400)
Subject: rcu: Add sparse check for RCU_INIT_POINTER()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1a6c9b2675460718f819def9a272cca35575eeb7;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

rcu: Add sparse check for RCU_INIT_POINTER()

Add a sparse check when RCU_INIT_POINTER() is used to assign a non __rcu
annotated pointer.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index a4a819ffb2d1..a033d8b55773 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -1047,6 +1047,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
  */
 #define RCU_INIT_POINTER(p, v) \
 	do { \
+		rcu_dereference_sparse(p, __rcu); \
 		p = RCU_INITIALIZER(v); \
 	} while (0)