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Message-ID: <20071218181827.5a35d634@shemminger-laptop> Date: Tue, 18 Dec 2007 18:18:27 -0800 From: Stephen Hemminger <shemminger@...ux-foundation.org> To: parag.warudkar@...il.com, David Miller <davem@...emloft.net> Cc: netdev@...r.kernel.org, akpm@...ux-foundation.org Subject: [PATCH 1/2] net: flow hash timer power saving The net flow hash randomization timer runs every 10 minutes. This time is low priority and doesn't need to wakeup the CPU. Signed-off-by: Stephen Hemminger <shemminger@...tta.com> --- a/net/core/flow.c 2007-12-18 07:43:31.000000000 -0800 +++ b/net/core/flow.c 2007-12-18 07:44:32.000000000 -0800 @@ -81,8 +81,8 @@ static void flow_cache_new_hashrnd(unsig for_each_possible_cpu(i) flow_hash_rnd_recalc(i) = 1; - flow_hash_rnd_timer.expires = jiffies + FLOW_HASH_RND_PERIOD; - add_timer(&flow_hash_rnd_timer); + mod_timer(&flow_hash_rnd_timer, + round_jiffies(jiffies + FLOW_HASH_RND_PERIOD)); } static void flow_entry_kill(int cpu, struct flow_cache_entry *fle) @@ -352,7 +352,7 @@ static int __init flow_cache_init(void) flow_lwm = 2 * flow_hash_size; flow_hwm = 4 * flow_hash_size; - init_timer(&flow_hash_rnd_timer); + init_timer_deferrable(&flow_hash_rnd_timer); flow_hash_rnd_timer.function = flow_cache_new_hashrnd; flow_hash_rnd_timer.expires = jiffies + FLOW_HASH_RND_PERIOD; add_timer(&flow_hash_rnd_timer); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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