From: Shan Wei <shanwei88@gmail.com>
To: lindner_marek@yahoo.de, siwu@hrz.tu-chemnitz.de,
ordex@autistici.org, b.a.t.m.a.n@lists.open-mesh.org,
David Miller <davem@davemloft.net>,
NetDev <netdev@vger.kernel.org>,
Kernel-Maillist <linux-kernel@vger.kernel.org>,
Shan Wei <shanwei88@gmail.com>, Christoph Lameter <cl@linux.com>
Subject: [B.A.T.M.A.N.] [PATCH v4 9/9] net: batman-adv: use per_cpu_add helper
Date: Tue, 13 Nov 2012 09:53:26 +0800 [thread overview]
Message-ID: <50A1A816.3070900@gmail.com> (raw)
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>
---
v4: no changes vs v3.
---
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
WARNING: multiple messages have this Message-ID (diff)
From: Shan Wei <shanwei88@gmail.com>
To: lindner_marek@yahoo.de, siwu@hrz.tu-chemnitz.de,
ordex@autistici.org, b.a.t.m.a.n@lists.open-mesh.org,
David Miller <davem@davemloft.net>,
NetDev <netdev@vger.kernel.org>,
Kernel-Maillist <linux-kernel@vger.kernel.org>,
Shan Wei <shanwei88@gmail.com>, Christoph Lameter <cl@linux.com>
Subject: [PATCH v4 9/9] net: batman-adv: use per_cpu_add helper
Date: Tue, 13 Nov 2012 09:53:26 +0800 [thread overview]
Message-ID: <50A1A816.3070900@gmail.com> (raw)
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>
---
v4: no changes vs v3.
---
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
WARNING: multiple messages have this Message-ID (diff)
From: Shan Wei <shanwei88-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: lindner_marek-LWAfsSFWpa4@public.gmane.org,
siwu-MaAgPAbsBIVS8oHt8HbXEIQuADTiUCJX@public.gmane.org,
ordex-GaUfNO9RBHfsrOwW+9ziJQ@public.gmane.org,
b.a.t.m.a.n-ZwoEplunGu2X36UT3dwllkB+6BGkLq7r@public.gmane.org,
David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
NetDev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Kernel-Maillist
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Shan Wei <shanwei88-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
Subject: [PATCH v4 9/9] net: batman-adv: use per_cpu_add helper
Date: Tue, 13 Nov 2012 09:53:26 +0800 [thread overview]
Message-ID: <50A1A816.3070900@gmail.com> (raw)
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>
---
v4: no changes vs v3.
---
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
next reply other threads:[~2012-11-13 1:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-13 1:53 Shan Wei [this message]
2012-11-13 1:53 ` [PATCH v4 9/9] net: batman-adv: use per_cpu_add helper Shan Wei
2012-11-13 1:53 ` Shan Wei
2012-11-13 9:55 ` [B.A.T.M.A.N.] " Marek Lindner
2012-11-13 9:55 ` Marek Lindner
2012-11-13 9:55 ` [B.A.T.M.A.N.] " Marek Lindner
2012-11-13 10:25 ` Shan Wei
2012-11-13 10:25 ` Shan Wei
2012-11-13 10:25 ` [B.A.T.M.A.N.] " Shan Wei
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