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

[Eric Dumazet]

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: Eric Dumazet <[EMAIL PROTECTED]>

diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c
index daadbcc..86037d1 100644
--- a/net/core/gen_estimator.c
+++ b/net/core/gen_estimator.c
@@ -135,7 +135,7 @@ skip:
        }
 
        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;

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