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Commit fce22848 authored by Christoph Lameter's avatar Christoph Lameter Committed by Tejun Heo
Browse files

this_cpu: Use this_cpu operations for NFS statistics 



Simplify NFS statistics and allow the use of optimized
arch instructions.

Acked-by: default avatarTejun Heo <tj@kernel.org>
CC: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 4eb41d10

fs/nfs/iostat.h

+3 −21
Original line number Diff line number Diff line
@@ -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