Hello,
blkcg's stats have always been somwhat of a mess. This patchset tries
to improve the situation a bit.
* cfq-iosched implements custom recursive stats and blk-throttle
implements custom per-cpu stats. This patchset make blkcg core
support both by default.
* cfq-iosched and blk-throttle keep track of the same stats multiple
times. Unify them.
Jens, as we're in the middle of the 4.2 merge window, I'll ping /
repost this patchset along with other pending patchsets once -rc1
drops.
This patchset contains the following six patches.
0001-cgroup-make-cftype-private-a-unsigned-long.patch
0002-blkcg-add-blkg_-rw-stat-aux_cnt-and-replace-cfq_grou.patch
0003-blkcg-make-blkcg_-rw-stat-per-cpu.patch
0004-blkcg-make-blkg_-rw-stat_recursive_sum-to-be-able-to.patch
0005-blkcg-move-io_service_bytes-and-io_serviced-stats-in.patch
0006-blkcg-remove-cfqg_stats-sectors.patch
This patchset is also available in the following git branch.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git
review-blkcg-stats-cleanup
and is on top of
[1] block/for-4.2/writeback
[2] [PATCHSET block/for-4.2/writeback] block, cgroup: make cfq charge async IOs
to the appropriate blkcgs
[3] [PATCHSET block/for-4.2/writeback] blkcg: blkcg_policy methods cleanup
diffstat follows. Thanks.
block/blk-cgroup.c | 175 ++++++++++++++++++++++++++++++++------
block/blk-core.c | 4
block/blk-throttle.c | 115 +------------------------
block/cfq-iosched.c | 204 +++++++++++++++++++++++----------------------
include/linux/blk-cgroup.h | 181 ++++++++++++++++++++++++++-------------
include/linux/cgroup.h | 2
6 files changed, 385 insertions(+), 296 deletions(-)
--
tejun
[1] 5857cd637bc0 ("bdi: fix wrong error return value in cgwb_create()").
[2] http://lkml.kernel.org/g/[email protected]
[3] http://lkml.kernel.org/g/[email protected]
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