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 <[email protected]>
Index: linux-2.6.16-rc6/kernel/timer.c
===================================================================
--- linux-2.6.16-rc6.orig/kernel/timer.c 2006-03-11 14:12:55.000000000 -0800
+++ linux-2.6.16-rc6/kernel/timer.c 2006-03-15 16:13:05.000000000 -0800
@@ -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)
-
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