From: Shan Wei <davids...@tencent.com>
this_cpu_add is an atomic operation.
and be more faster than per_cpu_ptr operation.
Signed-off-by: Shan Wei <davids...@tencent.com>
Reviewed-by: Christoph Lameter <c...@linux.com>
---
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
--
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