Tao Cui 482fc257de block/kyber-iosched: flush per-cpu latency buckets over possible CPUs ...

kyber_timer_fn() sums the per-cpu latency histograms with
for_each_online_cpu().  A CPU that goes offline mid-interval leaves its
bucket un-flushed; the samples are lost from the current decision and
re-appear (stale) when the CPU is onlined again.

Fixes: 6e25cb01ea ("kyber: implement improved heuristics")
Signed-off-by: Tao Cui <cuitao@kylinos.cn>
Reviewed-by: Yu Kuai <yukuai@fygo.io>
Link: https://patch.msgid.link/20260720093726.28965-5-cui.tao@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2026-08-03 20:03:20 -06:00

..

partitions

partitions: aix: bound the lvd scan to one sector

2026-07-15 16:32:49 -06:00

badblocks.c

badblocks: Fix a nonsense WARN_ON() which checks whether a u64 variable < 0

2025-03-10 07:41:58 -06:00

bdev.c

block: Avoid mounting the bdev pseudo-filesystem in userspace

2026-05-26 11:01:55 -06:00

bfq-cgroup.c

blk-cgroup: don't nest queue_lock under rcu in blkcg_print_blkgs()

2026-06-24 06:42:19 -06:00

bfq-iosched.c

block, bfq: don't grab queue_lock to initialize bfq

2026-06-24 06:42:31 -06:00

bfq-iosched.h

block, bfq: update outdated comment

2026-01-01 08:57:37 -07:00

bfq-wf2q.c

block, bfq: inject I/O to underutilized actuators

2023-01-29 15:18:33 -07:00

bio-integrity-auto.c

block: fix GFP_ flags confusion in bio_integrity_alloc_buf

2026-06-24 06:53:25 -06:00

bio-integrity-fs.c

block: fix GFP_ flags confusion in bio_integrity_alloc_buf

2026-06-24 06:53:25 -06:00

bio-integrity.c

block: handle REQ_OP_ZONE_APPEND in __bio_integrity_action

2026-06-24 06:53:25 -06:00

bio.c

block: add task-context bio completion infrastructure

2026-07-31 09:00:14 -06:00

blk-cgroup-fc-appid.c

block: Replace all non-returning strlcpy with strscpy

2023-06-01 09:13:31 -06:00

blk-cgroup-rwstat.c

block/blk-cgroup-rwstat: use data_race() for online test

2026-08-03 20:00:09 -06:00

blk-cgroup-rwstat.h

blk-cgroup: rwstat: fix kernel-doc warnings in header file

2025-01-13 07:47:09 -07:00

blk-cgroup.c

blk-cgroup: factor policy pd teardown loop into helper

2026-08-03 20:02:35 -06:00

blk-cgroup.h

blk-cgroup: don't nest queue_lock under rcu in blkcg_print_blkgs()

2026-06-24 06:42:19 -06:00

blk-core.c

block: Remove redundant plug in __submit_bio()

2026-06-16 10:06:27 -06:00

blk-crypto-fallback.c

Merge tag 'for-7.2/block-20260615' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-06-16 13:02:47 +05:30

blk-crypto-internal.h

blk-crypto: handle the fallback above the block layer

2026-01-11 12:55:41 -07:00

blk-crypto-profile.c

block/crypto: Annotate the crypto functions

2026-06-05 13:41:11 -06:00

blk-crypto-sysfs.c

blk-crypto: make blk_crypto_attr instances const

2026-03-17 19:29:16 -06:00

blk-crypto.c

Merge tag 'for-7.2/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

2026-06-16 13:20:54 +05:30

blk-flush.c

block: pass io_comp_batch to rq_end_io_fn callback

2026-01-20 10:12:54 -07:00

blk-ia-ranges.c

block: ia-ranges: make blk_ia_range_sysfs_entry instances const

2026-03-17 19:29:16 -06:00

blk-integrity.c

block: don't merge bios with different app_tags

2026-01-06 19:10:08 -07:00

blk-ioc.c

copy_process: pass clone_flags as u64 across calltree

2025-09-01 15:31:34 +02:00

blk-iocost.c

block/blk-iocost: collect per-cpu latency stats over possible CPUs

2026-08-03 20:03:20 -06:00

blk-iolatency.c

block/blk-iolatency: account per-cpu latency stats over possible CPUs

2026-08-03 20:03:20 -06:00

blk-ioprio.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

blk-ioprio.h

blk-ioprio: remove per-disk structure

2024-07-28 16:47:51 -06:00

blk-lib.c

block: add a bio_submit_or_kill helper

2026-04-07 08:22:24 -06:00

blk-map.c

block: validate user space vectors during extraction

2026-07-31 08:10:49 -06:00

blk-merge.c

block: propagate in_flight to whole disk on partition I/O

2026-06-09 10:12:50 -06:00

blk-mq-cpumap.c

blk-mq: add number of queue calc helper

2025-07-01 10:24:19 -06:00

blk-mq-debugfs.c

block/blk-mq-debugfs: Improve lock context annotations

2026-06-05 13:41:11 -06:00

blk-mq-debugfs.h

blk-mq-debugfs: remove blk_mq_debugfs_unregister_rqos()

2026-02-02 07:05:19 -07:00

blk-mq-dma.c

block: fix partial IOVA mapping cleanup in blk_rq_dma_map_iova

2026-02-12 04:23:31 -07:00

blk-mq-sched.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

blk-mq-sched.h

blk-mq-sched: unify elevators checking for async requests

2026-02-03 07:45:36 -07:00

blk-mq-sysfs.c

blk-mq: make blk_mq_hw_ctx_sysfs_entry instances const

2026-03-17 19:29:16 -06:00

blk-mq-tag.c

blk-mq: add tracepoint block_rq_tag_wait

2026-05-26 11:01:54 -06:00

blk-mq.c

blk-mq: bound blk_hctx_poll() to one jiffy

2026-06-26 10:41:33 -06:00

blk-mq.h

blk-mq: use queue_hctx in blk_mq_map_queue_type

2025-12-01 07:18:31 -07:00

blk-pm.c

block: force noio scope in blk_mq_freeze_queue

2025-01-31 07:20:08 -07:00

blk-pm.h

…

blk-rq-qos.c

blk-mq-debugfs: remove blk_mq_debugfs_unregister_rqos()

2026-02-02 07:05:19 -07:00

blk-rq-qos.h

blk-rq-qos: Remove unlikely() hints from QoS checks

2026-01-06 19:08:23 -07:00

blk-settings.c

block: clear BLK_FEAT_PCI_P2PDMA in blk_stack_limits() for non-supporting devices

2026-05-26 15:51:48 -06:00

blk-stat.c

block/blk-stat: drain per-cpu callback stats over possible CPUs

2026-08-03 20:03:20 -06:00

blk-stat.h

blk-stat: convert struct blk_stat_callback to kernel-doc

2026-02-16 10:21:06 -07:00

blk-sysfs.c

block: add configurable error injection

2026-06-12 10:40:35 -06:00

blk-throttle.c

blk-cgroup: delay freeing policy data after rcu grace period

2026-06-24 06:37:54 -06:00

blk-throttle.h

blk-throttle: fix access race during throttle policy activation

2025-09-08 08:24:44 -06:00

blk-timeout.c

…

blk-wbt.c

block: Make WBT latency writes honor enable state

2026-07-01 19:07:20 -06:00

blk-wbt.h

blk-wbt: factor out a helper wbt_set_lat()

2026-02-02 07:05:19 -07:00

blk-zoned.c

block: avoid potential deadlock on zone revalidation failure

2026-07-01 05:34:35 -06:00

blk.h

block: fix race in blk_time_get_ns() returning 0

2026-07-15 16:31:05 -06:00

bsg-lib.c

block: switch numa_node to int in blk_mq_hw_ctx and init_request

2026-05-26 11:01:55 -06:00

bsg.c

bsg: add io_uring command support to generic layer

2026-03-19 11:38:24 -06:00

disk-events.c

loop: fix partition scan race between udev and loop_reread_partitions()

2026-03-31 07:04:34 -06:00

early-lookup.c

wrapper for access to ->bd_partno

2024-05-02 17:48:09 -04:00

elevator.c

block: serialize elevator changes for the same queue using a writer lock

2026-07-16 06:08:38 -06:00

elevator.h

block: fix race between wbt_enable_default and IO submission

2025-12-12 12:51:11 -07:00

error-injection.c

block: show operation in error injection rules

2026-07-16 06:08:55 -06:00

error-injection.h

block: add configurable error injection

2026-06-12 10:40:35 -06:00

fops.c

block: enable RWF_DONTCACHE for block devices

2026-07-31 09:00:14 -06:00

genhd.c

block: remove redundant GD_NEED_PART_SCAN in add_disk_final()

2026-07-10 09:08:50 -06:00

holder.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ioctl.c

block: fix IORING_URING_CMD_REISSUE flags check in blkdev_uring_cmd

2026-06-16 09:56:38 -06:00

ioprio.c

block: remove test of incorrect io priority level

2025-05-08 09:04:12 -06:00

Kconfig

block: add configurable error injection

2026-06-12 10:40:35 -06:00

Kconfig.iosched

block: Default to use cgroup support for BFQ

2023-01-30 09:42:42 -07:00

kyber-iosched.c

block/kyber-iosched: flush per-cpu latency buckets over possible CPUs

2026-08-03 20:03:20 -06:00

Makefile

block: add configurable error injection

2026-06-12 10:40:35 -06:00

mq-deadline.c

block/mq-deadline: Make the lock context annotations compatible with Clang

2026-06-05 13:41:11 -06:00

opal_proto.h

sed-opal: Add STACK_RESET command

2026-03-31 07:04:00 -06:00

sed-opal.c

sed-opal: Add STACK_RESET command

2026-03-31 07:04:00 -06:00

t10-pi.c

blk-integrity: support arbitrary buffer alignment

2026-03-14 07:44:30 -06:00