On 6/9/21 1:07 AM, Bart Van Assche wrote:
> Maintain statistics per cgroup and export these to user space. These
> statistics are essential for verifying whether the proper I/O priorities
> have been assigned to requests. With this patch applied the output of
> (cd /sys/fs/cgroup/blkio/ && ls) is as follows:
> blkio.dd.dispatched_pri0 blkio.dd.inserted_pri3 cgroup.clone_children
> blkio.dd.dispatched_pri1 blkio.dd.merged_pri0 cgroup.procs
> blkio.dd.dispatched_pri2 blkio.dd.merged_pri1 cgroup.sane_behavior
> blkio.dd.dispatched_pri3 blkio.dd.merged_pri2 notify_on_release
> blkio.dd.inserted_pri0 blkio.dd.merged_pri3 release_agent
> blkio.dd.inserted_pri1 blkio.prio.class tasks
> blkio.dd.inserted_pri2 blkio.reset_stats
>
> Cc: Damien Le Moal <damien.lemoal@xxxxxxx>
> Cc: Hannes Reinecke <hare@xxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Ming Lei <ming.lei@xxxxxxxxxx>
> Cc: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
> Cc: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
> Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
> ---
> block/Kconfig.iosched | 6 +
> block/Makefile | 2 +
> block/mq-deadline-cgroup.c | 185 ++++++++++++++++++++
> block/mq-deadline-cgroup.h | 112 ++++++++++++
> block/{mq-deadline.c => mq-deadline-main.c} | 85 +++++++--
> 5 files changed, 376 insertions(+), 14 deletions(-)
> create mode 100644 block/mq-deadline-cgroup.c
> create mode 100644 block/mq-deadline-cgroup.h
> rename block/{mq-deadline.c => mq-deadline-main.c} (94%)
> Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions Germany GmbH, 90409 Nürnberg
GF: F. Imendörffer, HRB 36809 (AG Nürnberg)
