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Commit 789675e2 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

[NET]: Avoid divides in net/core/gen_estimator.c 



We can void divides (as seen with CONFIG_CC_OPTIMIZE_FOR_SIZE=y on x86)
changing ((HZ<<idx)/4) to ((HZ/4) << idx)

Signed-off-by: default avatarEric Dumazet <dada1@cosmosbay.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e870a8ef

net/core/gen_estimator.c

+2 −2
Original line number Diff line number Diff line
@@ -135,7 +135,7 @@ static void est_timer(unsigned long arg) 
	}



	if (!list_empty(&elist[idx].list))

		mod_timer(&elist[idx].timer, jiffies + ((HZ<<idx)/4));

		mod_timer(&elist[idx].timer, jiffies + ((HZ/4) << idx));

	rcu_read_unlock();

}
@@ -191,7 +191,7 @@ int gen_new_estimator(struct gnet_stats_basic *bstats, 
	}



	if (list_empty(&elist[idx].list))

		mod_timer(&elist[idx].timer, jiffies + ((HZ<<idx)/4));

		mod_timer(&elist[idx].timer, jiffies + ((HZ/4) << idx));



	list_add_rcu(&est->list, &elist[idx].list);

	return 0;