From: cl@linux-foundation.org
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org, Tejun Heo <tj@kernel.org>,
Trond Myklebust <trond.myklebust@fys.uio.no>,
mingo@elte.hu, rusty@rustcorp.com.au, davem@davemloft.net,
Pekka Enberg <penberg@cs.helsinki.fi>
Subject: [this_cpu_xx V3 04/19] Use this_cpu operations for NFS statistics
Date: Thu, 01 Oct 2009 13:40:37 -0400 [thread overview]
Message-ID: <20091001174120.350865990@gentwo.org> (raw)
In-Reply-To: <20091001174033.576397715@gentwo.org>
[-- Attachment #1: this_cpu_nfs --]
[-- Type: text/plain, Size: 2011 bytes --]
Simplify NFS statistics and allow the use of optimized
arch instructions.
Acked-by: Tejun Heo <tj@kernel.org>
CC: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
---
fs/nfs/iostat.h | 24 +++---------------------
1 file changed, 3 insertions(+), 21 deletions(-)
Index: linux-2.6/fs/nfs/iostat.h
===================================================================
--- linux-2.6.orig/fs/nfs/iostat.h 2009-09-29 11:57:01.000000000 -0500
+++ linux-2.6/fs/nfs/iostat.h 2009-09-29 12:26:42.000000000 -0500
@@ -25,13 +25,7 @@ struct nfs_iostats {
static inline void nfs_inc_server_stats(const struct nfs_server *server,
enum nfs_stat_eventcounters stat)
{
- struct nfs_iostats *iostats;
- int cpu;
-
- cpu = get_cpu();
- iostats = per_cpu_ptr(server->io_stats, cpu);
- iostats->events[stat]++;
- put_cpu();
+ this_cpu_inc(server->io_stats->events[stat]);
}
static inline void nfs_inc_stats(const struct inode *inode,
@@ -44,13 +38,7 @@ static inline void nfs_add_server_stats(
enum nfs_stat_bytecounters stat,
unsigned long addend)
{
- struct nfs_iostats *iostats;
- int cpu;
-
- cpu = get_cpu();
- iostats = per_cpu_ptr(server->io_stats, cpu);
- iostats->bytes[stat] += addend;
- put_cpu();
+ this_cpu_add(server->io_stats->bytes[stat], addend);
}
static inline void nfs_add_stats(const struct inode *inode,
@@ -65,13 +53,7 @@ static inline void nfs_add_fscache_stats
enum nfs_stat_fscachecounters stat,
unsigned long addend)
{
- struct nfs_iostats *iostats;
- int cpu;
-
- cpu = get_cpu();
- iostats = per_cpu_ptr(NFS_SERVER(inode)->io_stats, cpu);
- iostats->fscache[stat] += addend;
- put_cpu();
+ this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
}
#endif
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next prev parent reply other threads:[~2009-10-01 19:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-01 17:40 [this_cpu_xx V3 00/19] Introduce per cpu atomic operations and avoid per cpu address arithmetic cl
2009-10-01 17:40 ` [this_cpu_xx V3 01/19] Introduce this_cpu_ptr() and generic this_cpu_* operations cl
2009-10-01 17:40 ` [this_cpu_xx V3 02/19] this_cpu: X86 optimized this_cpu operations cl
2009-10-01 17:40 ` [this_cpu_xx V3 03/19] Use this_cpu operations for SNMP statistics cl
2009-10-01 17:40 ` cl [this message]
2009-10-01 17:40 ` [this_cpu_xx V3 05/19] use this_cpu ops for network statistics cl
2009-10-01 19:35 ` David Miller
2009-10-01 17:40 ` [this_cpu_xx V3 06/19] this_cpu_ptr: Straight transformations cl
2009-10-01 17:40 ` [this_cpu_xx V3 07/19] this_cpu_ptr: Eliminate get/put_cpu cl
2009-10-01 17:40 ` [this_cpu_xx V3 08/19] this_cpu_ptr: xfs_icsb_modify_counters does not need "cpu" variable cl
2009-10-01 17:40 ` [this_cpu_xx V3 09/19] Use this_cpu_ptr in crypto subsystem cl
2009-10-01 17:40 ` [this_cpu_xx V3 10/19] Use this_cpu ops for VM statistics cl
2009-10-01 17:40 ` [this_cpu_xx V3 11/19] RCU: Use this_cpu operations cl
2009-10-01 19:17 ` Ingo Molnar
2009-10-01 17:40 ` [this_cpu_xx V3 12/19] Move early initialization of pagesets out of zone_wait_table_init() cl
2009-10-01 17:40 ` [this_cpu_xx V3 13/19] this_cpu_ops: page allocator conversion cl
2009-10-01 17:40 ` [this_cpu_xx V3 14/19] this_cpu ops: Remove pageset_notifier cl
2009-10-01 17:40 ` [this_cpu_xx V3 15/19] Use this_cpu operations in slub cl
2009-10-01 17:40 ` [this_cpu_xx V3 16/19] SLUB: Get rid of dynamic DMA kmalloc cache allocation cl
2009-10-01 17:40 ` [this_cpu_xx V3 17/19] this_cpu: Remove slub kmem_cache fields cl
2009-10-01 17:40 ` [this_cpu_xx V3 18/19] Make slub statistics use this_cpu_inc cl
2009-10-01 17:40 ` [this_cpu_xx V3 19/19] this_cpu: slub aggressive use of this_cpu operations in the hotpaths cl
2009-10-02 9:29 ` [this_cpu_xx V3 00/19] Introduce per cpu atomic operations and avoid per cpu address arithmetic Ingo Molnar
2009-10-02 9:31 ` Ingo Molnar
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