mod_timer improvement
From: Steve Modica <hidden>
Date: 2003-10-02 18:20:23
Sorry about the screwed up formatting! I'm kinda new at this :) *** linux/linux/kernel/timer.c 2003/08/11 20:16:19 1.23
--- linux/linux/kernel/timer.c 2003/10/01 21:09:20 1.24*************** int mod_timer(struct timer_list *timer, *** 207,212 ****
--- 207,220 ----
int ret;
unsigned long flags;
+ /*
+ * This is a common optimization triggered by the
+ * networking code - if the timer is re-modified
+ * to be the same thing then just return:
+ */
+ if (timer->expires == expires && timer_pending(timer))
+ return 1;
+
spin_lock_irqsave(&timerlist_lock, flags);
timer->expires = expires;
ret = detach_timer(timer);
--
Steve Modica
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mobile: 651-261-3201
MTS-Technical Lead
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