batman-adv: use per_cpu_add helper
this_cpu_add is an atomic operation.
and be more faster than per_cpu_ptr operation.
Signed-off-by: Shan Wei <davidshan@tencent.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 2f85577..c4fe41f 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -276,9 +276,7 @@
static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx,
size_t count)
{
- int cpu = get_cpu();
- per_cpu_ptr(bat_priv->bat_counters, cpu)[idx] += count;
- put_cpu();
+ this_cpu_add(bat_priv->bat_counters[idx], count);
}
#define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)