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this_cpu: Use this_cpu operations for NFS statistics 

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>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Christoph Lameter 2009-10-03 19:48:22 +09:00 committed by Tejun Heo
parent 4eb41d10c7
commit fce22848a1
1 changed files with 3 additions and 21 deletions
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24
fs/nfs/iostat.h
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@ -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(const struct nfs_server *server,
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(struct inode *inode,
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