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9054650fac24b784df8500aba2869ebf240d069a
linux/block
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Jens Axboe 9054650fac block: relax jiffies rounding for timeouts 
In doing high IOPS testing, blk-mq is generally pretty well optimized.
There are a few things that stuck out as using more CPU than what is
really warranted, and one thing is the round_jiffies_up() that we do
twice for each request. That accounts for about 0.8% of the CPU in
my testing.

We can make this cheaper by avoiding an integer division, by just adding
a rough HZ mask that we can AND with instead. The timeouts are only on a
second granularity already, we don't have to be that accurate here and
this patch barely changes that. All we care about is nice grouping.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-15 09:23:35 -06:00
..
partitions
Merge tag 'block-5.8-2020-06-19' of git://git.kernel.dk/linux-block
2020-06-19 13:11:26 -07:00
badblocks.c
block: switch all files cleared marked as GPLv2 to SPDX tags
2019-04-30 16:11:57 -06:00
bfq-cgroup.c
block, bfq: invoke flush_idle_tree after reparent_active_queues in pd_offline
2020-03-21 14:31:03 -06:00
bfq-iosched.c
blk-mq: remove the bio argument to ->prepare_request
2020-05-29 10:23:24 -06:00
bfq-iosched.h
block, bfq: turn put_queue into release_process_ref in __bfq_bic_change_cgroup
2020-03-21 14:31:00 -06:00
bfq-wf2q.c
block, bfq: get a ref to a group when adding it to a service tree
2020-02-03 06:58:15 -07:00
bio-integrity.c
block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed
2020-06-02 17:21:50 -06:00
bio.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
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
writeback: remove struct bdi_writeback_congested
2020-07-08 17:05:53 -06:00
blk-core.c
block: remove a bogus warning in __submit_bio_noacct_mq
2020-07-07 11:45:59 -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
blk-mq: centralise related handling into blk_mq_get_driver_tag
2020-07-08 16:06:42 -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: Fix use-after-free issue accessing struct io_cq
2020-03-12 07:07:38 -06:00
blk-iocost.c
blk-iocost: Use struct_size() in kzalloc_node()
2020-06-24 09:15:58 -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: fix 32 bit overflow in __blkdev_issue_discard()
2018-11-14 08:17:18 -07:00
blk-map.c
block: Inline encryption support for blk-mq
2020-05-14 09:47:53 -06:00
blk-merge.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -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
blk-mq: remove pointless call of list_entry_rq() in hctx_show_busy_rq()
2020-07-01 07:25:36 -06:00
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: Remove unnecessary local variable
2020-07-10 07:58:09 -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: remove redundant validation in __blk_mq_end_request()
2020-07-10 07:58:33 -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
block: bypass blk_set_runtime_active for uninitialized q->dev
2019-09-12 07:11:56 -06:00
blk-pm.h
block: remove the queue_lock indirection
2018-11-15 12:17:28 -07:00
blk-rq-qos.c
blk-rq-qos: remove redundant finish_wait to rq_qos_wait.
2020-06-28 08:11:14 -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: Introduce REQ_OP_ZONE_APPEND
2020-05-12 20:36:28 -06:00
blk-stat.c
blk-stat: Optimise blk_stat_add()
2019-10-07 21:19:10 -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: create the request_queue debugfs_dir on registration
2020-06-24 09:15:58 -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: relax jiffies rounding for timeouts
2020-07-15 09:23:35 -06:00
blk-wbt.c
blk-wbt: rename __wbt_update_limits to wbt_update_limits
2020-05-29 16:30:39 -06:00
blk-wbt.h
blk-wbt: remove wbt_update_limits
2020-05-29 16:30:39 -06:00
blk-zoned.c
block: Modify revalidate zones
2020-05-12 20:36:28 -06:00
blk.h
blk-mq: centralise related handling into blk_mq_get_driver_tag
2020-07-08 16:06:42 -06:00
bounce.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
bsg-lib.c
blk-mq: move failure injection out of blk_mq_complete_request
2020-06-24 09:15:57 -06:00
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
Merge branch 'for-linus' into for-5.5/block
2019-11-07 12:27:19 -07:00
genhd.c
md: switch to ->check_events for media change notifications
2020-07-08 16:19:47 -06:00
ioctl.c
block: Fix type of first compat_put_{,u}long() argument
2020-05-19 09:40:29 -06:00
ioprio.c
docs: block: convert to ReST
2019-07-15 09:20:27 -03:00
Kconfig
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
Kconfig.iosched
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
keyslot-manager.c
block: Make blk-integrity preclude hardware inline encryption
2020-05-14 09:48:03 -06:00
kyber-iosched.c
blk-mq: remove the bio argument to ->prepare_request
2020-05-29 10:23:24 -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