Hello-
Following is the next iteration of the series to add xfs stats to
sysfs. This iteration adds patch 5/5 to incorporate sysfs/kobject
into xfsstats.
----------history---------------
v7:
-add patch 5/5: incorporate sysfs/kobject in xfsstats: handlers
take kobjects. Allocate & deallocate per-fs stats structures
and set up the sysfs entries for them. Add kobject and a pointer
to a per-cpu struct xfsstats. Modify the macros that manipulate
the stats accordingly.
v6:
-add patch 4/4: move to_xlog(kobject) to the relevant show/store
operations. This keeps the xfs_sysfs_object_show/store functions
generic. Also, with the change, there can be some cleanup of the
show/store function arguments.
v5:
-optimization of sysfs_ops function.
-style fixups
v4:
-whitespace fixup of patch 1
-add patch 4 (sysfs ops consolidation - dbg, stats, log)
v3:
-style fixups and removal of extraneous printk.
v2:
-style fixups.
v1:
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The series provides infrastructure for per-fs stats (in addition
to global accumulative stats).
We already have per-fs information in /sys, so it makes sense to
have per-fs stats there too. As a first step, moving existing
global stats infrastructure to /sys will allow us to re-use that
sysfs code for per-fs stats as well.
Patch 1 handles the bring-up and tear down of xfs/stats directory
structure in sysfs when an fs is mounted. The directory contains
the stats file and the stats_clear file. The stats file contents mimic
those of /proc/fs/xfs/stat. The stats_clear file is empty, and much
like the current stat_clear command, handles the zeroing of the stats
file when a "1" is echoed to the stats_clear file.
Patch 2 creates the symlink for stats from procfs to sysfs.
Patch 3 removes the now unused portions of procfs for stat.
Patch 4 consolidates the sysfs ops for dbg, stats, log.
Patch 5 allocates and deallocates per-fs stats structures and
sets up the sysfs entries for them. Add kobject and a pointer
to a per-cpu struct xfsstats. Modify the macros that manipulate
the stats accordingly.
Again, comments and questions are welcome.
Thanks-
Bill
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