commit mcslock

Reference: /n/atom/patch/applied/paemcs2
Date: Tue Jun 10 02:55:28 CES 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/9/pcpae/dat.h	Tue Jun 10 02:55:19 2014
+++ /sys/src/9/pcpae/dat.h	Tue Jun 10 02:55:21 2014
@@ -37,13 +37,8 @@
 
 struct Lock
 {
-	ulong	key;
-	ulong	sr;
-	uintptr	pc;
-	Proc	*p;
-	Mach	*m;
-	ushort	isilock;
-	uvlong	lockcycles;
+	LockEntry*	head;
+	LockEntry*	e;
 };
 
 struct Label
@@ -51,7 +46,6 @@
 	uintptr	sp;
 	uintptr	pc;
 };
-
 
 /*
  * FPsave.status