commit 423e4b674968252fbda648fc8857a4520d9e30e8
Author: Torvald Riegel <triegel@redhat.com>
Date:   Mon Feb 20 16:22:58 2012 +0100

    libitm: Put gl_wt global lock on separate cache line.
    
    	libitm/
    	* method-gl.cc (gl_wt_dispatch::orec): Put on separate cacheline.

diff --git a/libitm/method-gl.cc b/libitm/method-gl.cc
index 02865fb..01347e5 100644
--- a/libitm/method-gl.cc
+++ b/libitm/method-gl.cc
@@ -41,7 +41,8 @@ struct gl_mg : public method_group
   static gtm_word clear_locked(gtm_word l) { return l & ~LOCK_BIT; }
 
   // The global ownership record.
-  atomic<gtm_word> orec;
+  atomic<gtm_word> orec __attribute__((aligned(HW_CACHELINE_SIZE)));
+  char tailpadding[HW_CACHELINE_SIZE - sizeof(atomic<gtm_word>)];
 
   virtual void init()
   {
@@ -52,7 +53,6 @@ struct gl_mg : public method_group
   virtual void fini() { }
 };
 
-// TODO cacheline padding
 static gl_mg o_gl_mg;