Jens Axboe cf43e6be86 block: add scalable completion tracking of requests ... For legacy block, we simply track them in the request queue. For blk-mq, we track them on a per-sw queue basis, which we can then sum up through the hardware queues and finally to a per device state. The stats are tracked in, roughly, 0.1s interval windows. Add sysfs files to display the stats. The feature is off by default, to avoid any extra overhead. In-kernel users of it can turn it on by setting QUEUE_FLAG_STATS in the queue flags. We currently don't turn it on if someone just reads any of the stats files, that is something we could add as well. Signed-off-by: Jens Axboe <axboe@fb.com>		2016-11-10 13:53:26 -07:00
..
partitions	block: atari: Return early for unsupported sector size	2016-07-13 09:31:44 -07:00
Kconfig	blk-mq: Introduce blk_mq_quiesce_queue()	2016-11-02 12:50:19 -06:00
Kconfig.iosched	blkcg: make CONFIG_BLK_CGROUP bool	2012-03-06 21:27:21 +01:00
Makefile	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
badblocks.c	block, badblocks: introduce devm_init_badblocks	2016-01-09 08:39:04 -08:00
bio-integrity.c	block: remove bio_is_rw	2016-10-28 08:45:17 -06:00
bio.c	block: add bio_iov_iter_get_pages()	2016-11-02 10:50:18 -06:00
blk-cgroup.c	blkcg: Unlock blkcg_pol_mutex only once when cpd == NULL	2016-09-30 10:31:20 +02:00
blk-core.c	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-exec.c	block: split out request-only flags into a new namespace	2016-10-28 08:45:17 -06:00
blk-flush.c	block: set REQ_SYNC if we clear REQ_FUA|REQ_PREFLUSH	2016-11-08 19:39:28 -07:00
blk-integrity.c	block, libnvdimm, nvme: provide a built-in blk_integrity nop profile	2015-10-21 14:43:45 -06:00
blk-ioc.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
blk-lib.c	block: better op and flags encoding	2016-10-28 08:48:16 -06:00
blk-map.c	block: better op and flags encoding	2016-10-28 08:48:16 -06:00
blk-merge.c	block: split out request-only flags into a new namespace	2016-10-28 08:45:17 -06:00
blk-mq-cpumap.c	blk-mq: allow the driver to pass in a queue mapping	2016-09-15 08:42:03 -06:00
blk-mq-pci.c	blk_mq: linux/blk-mq.h does not include all the headers it depends on	2016-09-19 08:21:51 -06:00
blk-mq-sysfs.c	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-mq-tag.c	Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block	2016-10-09 17:29:33 -07:00
blk-mq-tag.h	Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block	2016-10-09 17:29:33 -07:00
blk-mq.c	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-mq.h	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-settings.c	block: add code to track actual device queue depth	2016-11-05 17:09:53 -06:00
blk-softirq.c	This adds a new gcc plugin named "latent_entropy". It is designed to	2016-10-15 10:03:15 -07:00
blk-stat.c	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-stat.h	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-sysfs.c	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-tag.c	block: split out request-only flags into a new namespace	2016-10-28 08:45:17 -06:00
blk-throttle.c	block: replace REQ_THROTTLED with a bio flag	2016-10-28 08:45:17 -06:00
blk-timeout.c	block: remove REQ_NO_TIMEOUT flag	2015-12-22 09:38:34 -07:00
blk-zoned.c	block: zoned: fix harmless maybe-uninitialized warning	2016-10-24 20:51:22 -06:00
blk.h	block: split out request-only flags into a new namespace	2016-10-28 08:45:17 -06:00
bounce.c	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2015-09-19 18:57:09 -07:00
bsg-lib.c	bsg: Remove unused function bsg_goose_queue()	2012-12-06 14:33:02 +01:00
bsg.c	block: drop q argument from bsg_validate_sgv4_hdr	2016-11-03 07:56:14 -06:00
cfq-iosched.c	block: cfq_cpd_alloc() should use @gfp	2016-11-10 10:10:04 -07:00
cmdline-parser.c	block: remove unrelated header files and export symbol	2014-01-21 20:18:26 -08:00
compat_ioctl.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
deadline-iosched.c	block: do not merge requests without consulting with io scheduler	2016-07-20 21:35:12 -06:00
elevator.c	block: better op and flags encoding	2016-10-28 08:48:16 -06:00
genhd.c	block: fix bdi vs gendisk lifetime mismatch	2016-08-04 14:19:16 -06:00
ioctl.c	blk-zoned: implement ioctls	2016-10-18 10:05:42 -06:00
ioprio.c	block: fix use-after-free in sys_ioprio_get()	2016-07-01 08:39:24 -06:00
noop-iosched.c	elevator: use list_{first,prev,next}_entry	2015-11-16 15:21:48 -07:00
partition-generic.c	block/partition-generic.c: Remove a set-but-not-used variable	2016-06-14 09:09:15 -06:00
scsi_ioctl.c	mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM	2015-11-06 17:50:42 -08:00
t10-pi.c	block: Consolidate static integrity profile properties	2015-10-21 14:42:38 -06:00