A change to clocksource initialization. If the list field is initialized it allows clocksource_register to complete faster since it doesn't have to scan the list of clocks doing strcmp on each looking for duplicates. Signed-Off-By: Daniel Walker --- kernel/time/clocksource.c | 3 +-- kernel/time/jiffies.c | 1 + 2 files changed, 2 insertions(+), 2 deletions(-) Index: linux-2.6.19/kernel/time/clocksource.c =================================================================== --- linux-2.6.19.orig/kernel/time/clocksource.c +++ linux-2.6.19/kernel/time/clocksource.c @@ -186,12 +186,11 @@ int clocksource_register(struct clocksou unsigned long flags; spin_lock_irqsave(&clocksource_lock, flags); - if (unlikely(!list_empty(&c->list) && __is_registered(c->name))) { + if (unlikely(!list_empty(&c->list))) { printk("register_clocksource: Cannot register %s clocksource. " "Already registered!", c->name); ret = -EBUSY; } else { - INIT_LIST_HEAD(&c->list); __sorted_list_add(c); /* scan the registered clocksources, and pick the best one */ next_clocksource = select_clocksource(); Index: linux-2.6.19/kernel/time/jiffies.c =================================================================== --- linux-2.6.19.orig/kernel/time/jiffies.c +++ linux-2.6.19/kernel/time/jiffies.c @@ -63,6 +63,7 @@ struct clocksource clocksource_jiffies = .mult = NSEC_PER_JIFFY << JIFFIES_SHIFT, /* details above */ .shift = JIFFIES_SHIFT, .is_continuous = 0, /* tick based, not free running */ + .list = LIST_HEAD_INIT(clocksource_jiffies.list), }; static int __init init_jiffies_clocksource(void) -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/