From 80529c45ab66188a0b3814ba31409b31f5fcb53d Mon Sep 17 00:00:00 2001 From: Bill O'Donnell Date: Mon, 12 Oct 2015 05:19:45 +1100 Subject: 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 Reviewed-by: Eric Sandeen Signed-off-by: Dave Chinner --- fs/xfs/xfs_sysfs.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'fs/xfs/xfs_sysfs.c') diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c index fa3dc66d82f1..ee70f5dec9dc 100644 --- a/fs/xfs/xfs_sysfs.c +++ b/fs/xfs/xfs_sysfs.c @@ -131,12 +131,22 @@ struct kobj_type xfs_dbg_ktype = { /* stats */ +static inline struct xstats * +to_xstats(struct kobject *kobject) +{ + struct xfs_kobj *kobj = to_kobj(kobject); + + return container_of(kobj, struct xstats, xs_kobj); +} + STATIC ssize_t stats_show( struct kobject *kobject, char *buf) { - return xfs_stats_format(buf); + struct xstats *stats = to_xstats(kobject); + + return xfs_stats_format(stats->xs_stats, buf); } XFS_SYSFS_ATTR_RO(stats); @@ -148,6 +158,7 @@ stats_clear_store( { int ret; int val; + struct xstats *stats = to_xstats(kobject); ret = kstrtoint(buf, 0, &val); if (ret) @@ -155,7 +166,8 @@ stats_clear_store( if (val != 1) return -EINVAL; - xfs_stats_clearall(); + + xfs_stats_clearall(stats->xs_stats); return count; } XFS_SYSFS_ATTR_WO(stats_clear); -- cgit v1.2.3-58-ga151