* [B.A.T.M.A.N.] [PATCH v3 9/9] net: batman-adv: use per_cpu_add helper
@ 2012-11-09 2:22 ` Shan Wei
0 siblings, 0 replies; 3+ messages in thread
From: Shan Wei @ 2012-11-09 2:22 UTC (permalink / raw)
To: lindner_marek, siwu, ordex, b.a.t.m.a.n, David Miller, NetDev,
Kernel-Maillist, Shan Wei, Christoph Lameter
From: Shan Wei <davidshan@tencent.com>
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>
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v3 9/9] net: batman-adv: use per_cpu_add helper
@ 2012-11-09 2:22 ` Shan Wei
0 siblings, 0 replies; 3+ messages in thread
From: Shan Wei @ 2012-11-09 2:22 UTC (permalink / raw)
To: lindner_marek, siwu, ordex, b.a.t.m.a.n, David Miller, NetDev,
Kernel-Maillist, Shan Wei, Christoph Lameter
From: Shan Wei <davidshan@tencent.com>
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>
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v3 9/9] net: batman-adv: use per_cpu_add helper
@ 2012-11-09 2:22 ` Shan Wei
0 siblings, 0 replies; 3+ messages in thread
From: Shan Wei @ 2012-11-09 2:22 UTC (permalink / raw)
To: lindner_marek-LWAfsSFWpa4, siwu-MaAgPAbsBIVS8oHt8HbXEIQuADTiUCJX,
ordex-GaUfNO9RBHfsrOwW+9ziJQ,
b.a.t.m.a.n-ZwoEplunGu2X36UT3dwllkB+6BGkLq7r, David Miller,
NetDev, Kernel-Maillist, Shan Wei, Christoph Lameter
From: Shan Wei <davidshan-1Nz4purKYjRBDgjK7y7TUQ@public.gmane.org>
this_cpu_add is an atomic operation.
and be more faster than per_cpu_ptr operation.
Signed-off-by: Shan Wei <davidshan-1Nz4purKYjRBDgjK7y7TUQ@public.gmane.org>
Reviewed-by: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
---
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
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2012-11-09 2:22 [B.A.T.M.A.N.] [PATCH v3 9/9] net: batman-adv: use per_cpu_add helper Shan Wei
2012-11-09 2:22 ` Shan Wei
2012-11-09 2:22 ` Shan Wei
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