X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=Documentation%2Fspinlocks.txt;h=619699dde5938b64c6d63e1059cf0ed702c128af;hb=378b39a4f91ab0846eb6e13d47ea812bc82b44d9;hp=471e75389778eb0583be31eed6cce9d6babf67fa;hpb=d9ff963801e4f7648c55a27413a1b1de59480a30;p=linux-beck.git

diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt
index 471e75389778..619699dde593 100644
--- a/Documentation/spinlocks.txt
+++ b/Documentation/spinlocks.txt
@@ -5,6 +5,28 @@ Please use DEFINE_SPINLOCK()/DEFINE_RWLOCK() or
 __SPIN_LOCK_UNLOCKED()/__RW_LOCK_UNLOCKED() as appropriate for static
 initialization.
 
+Most of the time, you can simply turn:
+
+	static spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED;
+
+into:
+
+	static DEFINE_SPINLOCK(xxx_lock);
+
+Static structure member variables go from:
+
+	struct foo bar {
+		.lock	=	SPIN_LOCK_UNLOCKED;
+	};
+
+to:
+
+	struct foo bar {
+		.lock	=	__SPIN_LOCK_UNLOCKED(bar.lock);
+	};
+
+Declaration of static rw_locks undergo a similar transformation.
+
 Dynamic initialization, when necessary, may be performed as
 demonstrated below.