v10:
- Update patch 3 to rename the rstat function to
cgroup_rstat_css_cpu_flush().
v9:
- Remove patch "llist: Allow optional sentinel node terminated lockless
list" for now. This will be done as a follow-up patch.
- Add a new lqueued field to blkg_iostat_set to store the status of
whether lnode is in a lockless list.
- Add a new patch 3 to speed up the freeing of blkcg by flushing out
the rstat lockless lists at blkcg offline time.
v8:
- Update the llist patch to make existing llist functions and macros
work for both NULL and sentinel terminated lockless list as much
as possible and leave only the initialization and removal functions
to have a sentinel terminated llist variants.
This patch series improves blkcg_rstat_flush() performance by eliminating
unnecessary blkg enumeration and flush operations for those blkg's and
blkg_iostat_set's that haven't been updated since the last flush.
Waiman Long (3):
blk-cgroup: Return -ENOMEM directly in blkcg_css_alloc() error path
blk-cgroup: Optimize blkcg_rstat_flush()
blk-cgroup: Flush stats at blkgs destruction path
block/blk-cgroup.c | 103 +++++++++++++++++++++++++++++++++++------
block/blk-cgroup.h | 10 ++++
include/linux/cgroup.h | 1 +
kernel/cgroup/rstat.c | 20 ++++++++
4 files changed, 119 insertions(+), 15 deletions(-)
--
2.31.1
