[PATCH] time_interpolator: add __read_mostly
authorChristoph Lameter <clameter@sgi.com>
Fri, 17 Mar 2006 07:04:00 +0000 (23:04 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Fri, 17 Mar 2006 15:51:25 +0000 (07:51 -0800)
The pointer to the current time interpolator and the current list of time
interpolators are typically only changed during bootup.  Adding
__read_mostly takes them away from possibly hot cachelines.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
kernel/timer.c

index bf7c4193b936ee1723281db43f46daba7de1165b..2410c18dbeb1403eafac5449b48676cd6580a387 100644 (file)
@@ -1354,8 +1354,8 @@ void __init init_timers(void)
 
 #ifdef CONFIG_TIME_INTERPOLATION
 
-struct time_interpolator *time_interpolator;
-static struct time_interpolator *time_interpolator_list;
+struct time_interpolator *time_interpolator __read_mostly;
+static struct time_interpolator *time_interpolator_list __read_mostly;
 static DEFINE_SPINLOCK(time_interpolator_lock);
 
 static inline u64 time_interpolator_get_cycles(unsigned int src)