vserver 1.9.5.x5

[linux-2.6.git] / include / asm-ppc64 / iSeries / HvLpEvent.h

diff --git a/include/asm-ppc64/iSeries/HvLpEvent.h b/include/asm-ppc64/iSeries/HvLpEvent.h
index 669106f..30936e4 100644 (file)
--- a/include/asm-ppc64/iSeries/HvLpEvent.h
+++ b/include/asm-ppc64/iSeries/HvLpEvent.h
@@ -75,6 +75,9 @@ typedef void (*LpEventHandler)(struct HvLpEvent *, struct pt_regs *);
 extern int HvLpEvent_registerHandler( HvLpEvent_Type eventType, LpEventHandler hdlr);
 
 // Unregister a handler for an event type
+//  This call will sleep until the handler being removed is guaranteed to
+//  be no longer executing on any CPU. Do not call with locks held.
+//
 //  returns 0 on success
 //  Unregister will fail if there are any paths open for the type
 extern int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType );