Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933555AbZJGAEy (ORCPT ); Tue, 6 Oct 2009 20:04:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933124AbZJGAEy (ORCPT ); Tue, 6 Oct 2009 20:04:54 -0400 Received: from smtp2.ultrahosting.com ([74.213.174.253]:48078 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932921AbZJGAEx (ORCPT ); Tue, 6 Oct 2009 20:04:53 -0400 X-Amavis-Alert: BAD HEADER, Header field occurs more than once: "Cc" occurs 3 times Message-Id: <20091006233730.279506874@gentwo.org> References: <20091006233654.815079668@gentwo.org> User-Agent: quilt/0.46-1 Date: Tue, 06 Oct 2009 19:36:58 -0400 From: cl@linux-foundation.org To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, Tejun Heo , Trond Myklebust CC: Mel Gorman Cc: Pekka Enberg Subject: [this_cpu_xx V5 04/19] Use this_cpu operations for NFS statistics Content-Disposition: inline; filename=this_cpu_nfs Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2030 Lines: 67 Simplify NFS statistics and allow the use of optimized arch instructions. Acked-by: Tejun Heo CC: Trond Myklebust Signed-off-by: Christoph Lameter --- 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 -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/