[PATCH v3 9/9] net: batman-adv: use per_cpu_add helper
From: Shan Wei <hidden>
Date: 2012-11-09 02:22:26
Also in:
batman, lkml
Subsystem:
batman advanced, the rest · Maintainers:
Marek Lindner, Simon Wunderlich, Antonio Quartulli, Sven Eckelmann, Linus Torvalds
From: Shan Wei <redacted> this_cpu_add is an atomic operation. and be more faster than per_cpu_ptr operation. Signed-off-by: Shan Wei <redacted> Reviewed-by: Christoph Lameter <redacted> --- v3: change commit message. --- net/batman-adv/main.h | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 897ba6a..3aef5b2 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h@@ -263,9 +263,7 @@ static inline bool batadv_has_timed_out(unsigned long timestamp, 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)
--
1.7.1