AcoSail/kernel_optimize_test
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cf43e6be86
kernel_optimize_test/block
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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
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
Kconfig blk-mq: Introduce blk_mq_quiesce_queue() 2016-11-02 12:50:19 -06:00
Kconfig.iosched
Makefile block: add scalable completion tracking of requests 2016-11-10 13:53:26 -07:00
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