Tejun Heo 97eb19751f blk-iocost: add absolute usage stat ... Currently, iocost doesn't collect or expose any statistics punting off all monitoring duties to drgn based iocost_monitor.py. While it works for some scenarios, there are some usability and data availability challenges. For example, accurate per-cgroup usage information can't be tracked by vtime progression at all and the number available in iocg->usages[] are really short-term snapshots used for control heuristics with possibly significant errors. This patch implements per-cgroup absolute usage stat counter and exposes it through io.stat along with the current vrate. Usage stat collection and flushing employ the same method as cgroup rstat on the active iocg's and the only hot path overhead is preemption toggling and adding to a percpu counter. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-09-01 19:38:32 -06:00
..
partitions	block: remove the disk argument to delete_partition	2020-09-01 19:38:25 -06:00
badblocks.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
bfq-cgroup.c	bfq: fix blkio cgroup leakage v4	2020-08-18 07:48:08 -07:00
bfq-iosched.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
bfq-iosched.h	bfq: fix blkio cgroup leakage v4	2020-08-18 07:48:08 -07:00
bfq-wf2q.c	bfq: fix blkio cgroup leakage v4	2020-08-18 07:48:08 -07:00
bio-integrity.c	block: make function __bio_integrity_free() static	2020-07-02 12:38:18 -06:00
bio.c	block: Fix page_is_mergeable() for compound pages	2020-08-17 19:35:53 -07:00
blk-cgroup-rwstat.c	blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT	2019-11-07 12:28:13 -07:00
blk-cgroup-rwstat.h	blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT	2019-11-07 12:28:13 -07:00
blk-cgroup.c	blkcg: fix memleak for iolatency	2020-08-21 17:14:27 -06:00
blk-core.c	blk-mq: use BLK_MQ_NO_TAG for no tag	2020-09-01 16:49:26 -06:00
blk-crypto-fallback.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
blk-crypto-internal.h	block: blk-crypto-fallback for Inline Encryption	2020-05-14 09:48:03 -06:00
blk-crypto.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
blk-exec.c	block: add a blk_account_io_merge_bio helper	2020-05-27 05:21:23 -06:00
blk-flush.c	block: fix double account of flush request's driver tag	2020-08-11 13:53:32 -06:00
blk-integrity.c	block: Make blk-integrity preclude hardware inline encryption	2020-05-14 09:48:03 -06:00
blk-ioc.c	block: remove retry loop in ioc_release_fn()	2020-07-16 10:22:15 -06:00
blk-iocost.c	blk-iocost: add absolute usage stat	2020-09-01 19:38:32 -06:00
blk-iolatency.c	blk-iolatency: only call ktime_get() if needed	2020-07-01 08:02:38 -06:00
blk-lib.c	block: check queue's limits.discard_granularity in __blkdev_issue_discard()	2020-08-05 17:15:47 -06:00
blk-map.c	block: remove the BIO_USER_MAPPED flag	2020-09-01 16:49:26 -06:00
blk-merge.c	block: Add a new helper to attempt to merge a bio	2020-09-01 16:49:26 -06:00
blk-mq-cpumap.c	blk-mq: balance mapping between present CPUs and queues	2019-08-04 21:43:12 -06:00
blk-mq-debugfs-zoned.c	block: Cleanup license notice	2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c	for-5.9/block-20200802	2020-08-03 11:57:03 -07:00
blk-mq-debugfs.h	blk-mq: no need to check return value of debugfs_create functions	2019-06-13 03:00:30 -06:00
blk-mq-pci.c	block: Fix blk_mq_*_map_queues() kernel-doc headers	2019-05-31 15:12:34 -06:00
blk-mq-rdma.c	block: Fix blk_mq_*_map_queues() kernel-doc headers	2019-05-31 15:12:34 -06:00
blk-mq-sched.c	blk-mq: use BLK_MQ_NO_TAG for no tag	2020-09-01 16:49:26 -06:00
blk-mq-sched.h	block: blk-mq: Remove blk_mq_sched_started_request and started_request	2019-07-23 07:25:09 -06:00
blk-mq-sysfs.c	blk-mq: make sure that line break can be printed	2019-11-04 07:14:10 -07:00
blk-mq-tag.c	blk-mq: move blk_mq_get_driver_tag into blk-mq.c	2020-06-30 12:57:59 -06:00
blk-mq-tag.h	blk-mq: centralise related handling into blk_mq_get_driver_tag	2020-07-08 16:06:42 -06:00
blk-mq-virtio.c	blk-mq: Fix typo in comment	2020-03-17 20:55:21 +01:00
blk-mq.c	blk-mq: insert request not through ->queue_rq into sw/scheduler queue	2020-08-21 17:09:22 -06:00
blk-mq.h	Revert "blk-mq: put driver tag when this request is completed"	2020-07-01 22:58:32 -06:00
blk-pm.c	scsi: block: pm: Simplify resume handling	2020-07-24 22:09:55 -04:00
blk-pm.h	block: remove the queue_lock indirection	2018-11-15 12:17:28 -07:00
blk-rq-qos.c	Revert "blk-rq-qos: remove redundant finish_wait to rq_qos_wait."	2020-07-15 09:33:37 -06:00
blk-rq-qos.h	blk-rq-qos: fix first node deletion of rq_qos_del()	2019-10-15 10:13:13 -06:00
blk-settings.c	block: remove blk_queue_stack_limits	2020-07-20 15:38:52 -06:00
blk-stat.c	blk-stat: make q->stats->lock irqsafe	2020-09-01 16:48:46 -06:00
blk-stat.h	block: deactivate blk_stat timer in wbt_disable_default()	2018-12-12 06:47:51 -07:00
blk-sysfs.c	block: add max_active_zones to blk-sysfs	2020-07-15 14:26:11 -06:00
blk-throttle.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
blk-timeout.c	block: blk-timeout: delete duplicated word	2020-07-31 16:29:47 -06:00
blk-wbt.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
blk-wbt.h	blk-wbt: remove wbt_update_limits	2020-05-29 16:30:39 -06:00
blk-zoned.c	block: don't do revalidate zones on invalid devices	2020-08-03 09:24:04 -06:00
blk.h	block: remove the disk argument to delete_partition	2020-09-01 19:38:25 -06:00
bounce.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
bsg-lib.c	bsg-lib: convert comma to semicolon	2020-08-16 20:07:12 -07:00
bsg.c	compat_ioctl: bsg: add handler	2020-01-03 09:33:21 +01:00
cmdline-parser.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
elevator.c	block: elevator: delete duplicated word and fix typos	2020-07-31 16:29:47 -06:00
genhd.c	block: remove the unused q argument to part_in_flight and part_in_flight_rw	2020-09-01 19:38:31 -06:00
ioctl.c	block: Fix type of first compat_put_{,u}long() argument	2020-05-19 09:40:29 -06:00
ioprio.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
Kconfig	blk-wbt: Remove obsolete multiqueue I/O scheduling comment	2020-09-01 16:49:26 -06:00
Kconfig.iosched	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
keyslot-manager.c	block/keyslot-manager: use kvfree_sensitive()	2020-06-29 13:24:05 -06:00
kyber-iosched.c	block: Move blk_mq_bio_list_merge() into blk-merge.c	2020-09-01 16:49:26 -06:00
Makefile	blk-mq: merge blk-softirq.c into blk-mq.c	2020-06-24 09:15:56 -06:00
mq-deadline.c	blk-mq: remove the bio argument to ->prepare_request	2020-05-29 10:23:24 -06:00
opal_proto.h	block: sed-opal: Change the check condition for regular session validity	2020-03-12 08:00:10 -06:00
scsi_ioctl.c	scsi: core: Allow non-root users to perform ZBC commands	2020-03-16 18:26:31 -04:00
sed-opal.c	block: sed-opal: Change the check condition for regular session validity	2020-03-12 08:00:10 -06:00
t10-pi.c	block: Allow t10-pi to be modular	2020-01-06 20:59:04 -07:00