diff options
| author | Bill O'Donnell <billodo@redhat.com> | 2015-10-12 05:19:45 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-10-12 05:19:45 +1100 |
| commit | 80529c45ab66188a0b3814ba31409b31f5fcb53d (patch) | |
| tree | f9de7af29683cb58b16856bea822c3b5c044dd68 /fs/xfs/xfs_stats.h | |
| parent | a27c264009cb236dc209875043a0c237af46a1af (diff) | |
xfs: pass xfsstats structures to handlers and macros
This patch is the next step toward per-fs xfs stats. The patch makes
the show and clear routines able to handle any stats structure
associated with a kobject.
Instead of a single global xfsstats structure, add kobject and a pointer
to a per-cpu struct xfsstats. Modify the macros that manipulate the stats
accordingly: XFS_STATS_INC, XFS_STATS_DEC, and XFS_STATS_ADD now access
xfsstats->xs_stats.
The sysfs functions need to get from the kobject back to the xfsstats
structure which contains it, and pass the pointer to the ->xs_stats
percpu structure into the show & clear routines.
Signed-off-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_stats.h')
| -rw-r--r-- | fs/xfs/xfs_stats.h | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/fs/xfs/xfs_stats.h b/fs/xfs/xfs_stats.h index 18807b576394..54f2260299d1 100644 --- a/fs/xfs/xfs_stats.h +++ b/fs/xfs/xfs_stats.h @@ -18,9 +18,6 @@ #ifndef __XFS_STATS_H__ #define __XFS_STATS_H__ -int xfs_stats_format(char *buf); -void xfs_stats_clearall(void); - #if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF) #include <linux/percpu.h> @@ -217,15 +214,18 @@ struct xfsstats { __uint64_t xs_read_bytes; }; -DECLARE_PER_CPU(struct xfsstats, xfsstats); +int xfs_stats_format(struct xfsstats __percpu *stats, char *buf); +void xfs_stats_clearall(struct xfsstats __percpu *stats); +extern struct xstats xfsstats; -/* - * We don't disable preempt, not too worried about poking the - * wrong CPU's stat for now (also aggregated before reporting). - */ -#define XFS_STATS_INC(v) (per_cpu(xfsstats, current_cpu()).v++) -#define XFS_STATS_DEC(v) (per_cpu(xfsstats, current_cpu()).v--) -#define XFS_STATS_ADD(v, inc) (per_cpu(xfsstats, current_cpu()).v += (inc)) +#define XFS_STATS_INC(v) \ + (per_cpu_ptr(xfsstats.xs_stats, current_cpu())->v++) + +#define XFS_STATS_DEC(v) \ + (per_cpu_ptr(xfsstats.xs_stats, current_cpu())->v--) + +#define XFS_STATS_ADD(v, inc) \ + (per_cpu_ptr(xfsstats.xs_stats, current_cpu())->v += (inc)) extern int xfs_init_procfs(void); extern void xfs_cleanup_procfs(void); |