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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2010-01-22 10:55:25 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-01-22 10:55:25 +0300
commit7755726fe90a8b253659756e6de68c1a55aa427f (patch)
treea3523fa77e07854db3b8089e3066a55ea997060c /include/linux/rcutree.h
parent3bf127637e22ddf95e67e10a23c339cee3d52429 (diff)
parent92dcffb916d309aa01778bf8963a6932e4014d07 (diff)
downloadlinux-7755726fe90a8b253659756e6de68c1a55aa427f.tar.xz
Merge commit 'v2.6.33-rc5' into next
Diffstat (limited to 'include/linux/rcutree.h')
-rw-r--r--include/linux/rcutree.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index c93eee5911b0..8044b1b94333 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -45,6 +45,12 @@ extern void __rcu_read_unlock(void);
extern void synchronize_rcu(void);
extern void exit_rcu(void);
+/*
+ * Defined as macro as it is a very low level header
+ * included from areas that don't even know about current
+ */
+#define rcu_preempt_depth() (current->rcu_read_lock_nesting)
+
#else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
static inline void __rcu_read_lock(void)
@@ -63,6 +69,11 @@ static inline void exit_rcu(void)
{
}
+static inline int rcu_preempt_depth(void)
+{
+ return 0;
+}
+
#endif /* #else #ifdef CONFIG_TREE_PREEMPT_RCU */
static inline void __rcu_read_lock_bh(void)