Ming Lei 645840a176 blk-mq: don't keep offline CPUs mapped to hctx 0 ...

commit bffa9909a6 upstream.

From commit 4b855ad371 ("blk-mq: Create hctx for each present CPU),
blk-mq doesn't remap queue after CPU topo is changed, that said when
some of these offline CPUs become online, they are still mapped to
hctx 0, then hctx 0 may become the bottleneck of IO dispatch and
completion.

This patch sets up the mapping from the beginning, and aligns to
queue mapping for PCI device (blk_mq_pci_map_queues()).

Cc: Stefan Haberland <sth@linux.vnet.ibm.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: stable@vger.kernel.org
Fixes: 4b855ad371 ("blk-mq: Create hctx for each present CPU)
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-19 08:55:10 +02:00

..

partitions

partitions/msdos: Unable to mount UFS 44bsd partitions

2018-04-08 14:27:34 +02:00

badblocks.c

badblocks: fix wrong return value in badblocks_set if badblocks are disabled

2017-11-03 11:29:50 -07:00

bfq-cgroup.c

block, bfq: put async queues for root bfq groups too

2018-04-12 12:31:11 +02:00

bfq-iosched.c

block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP

2017-11-14 20:13:33 -07:00

bfq-iosched.h

block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP

2017-11-14 20:13:33 -07:00

bfq-wf2q.c

block, bfq: update blkio stats outside the scheduler lock

2017-11-14 20:13:33 -07:00

bio-integrity.c

block: remove unnecessary NULL checks in bioset_integrity_free()

2017-10-06 13:03:12 -06:00

bio.c

Fix slab name "biovec-(1<<(21-12))"

2018-04-08 14:27:40 +02:00

blk-cgroup.c

blkcg: add sanity check for blkcg policy operations

2017-11-04 12:31:15 -06:00

blk-core.c

block: Change a rcu_read_{lock,unlock}_sched() pair into rcu_read_{lock,unlock}()

2018-04-19 08:55:10 +02:00

blk-exec.c

block: introduce new block status code type

2017-06-09 09:27:32 -06:00

blk-flush.c

blk-mq: don't allocate driver tag upfront for flush rq

2017-11-04 12:40:13 -06:00

blk-integrity.c

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

blk-ioc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-lib.c

Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block

2017-11-14 15:32:19 -08:00

blk-map.c

blk_rq_map_user_iov: fix error override

2018-02-25 11:15:40 +01:00

blk-merge.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-mq-cpumap.c

blk-mq: don't keep offline CPUs mapped to hctx 0

2018-04-19 08:55:10 +02:00

blk-mq-debugfs.c

Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block

2017-11-14 15:32:19 -08:00

blk-mq-debugfs.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-mq-pci.c

blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL

2017-08-18 08:08:14 -06:00

blk-mq-rdma.c

block: Add rdma affinity based queue mapping helper

2017-08-08 14:58:03 -04:00

blk-mq-sched.c

blk-mq: only run the hardware queue if IO is pending

2017-11-10 19:55:57 -07:00

blk-mq-sched.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-mq-sysfs.c

blk-mq: untangle debugfs and sysfs

2017-05-04 08:24:13 -06:00

blk-mq-tag.c

block: remove blk_mq_reinit_tagset

2017-10-18 19:27:49 +02:00

blk-mq-tag.h

Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block

2017-11-14 15:32:19 -08:00

blk-mq-virtio.c

blk-mq: provide a default queue mapping for virtio device

2017-02-27 20:54:05 +02:00

blk-mq.c

blk-mq: order getting budget and driver tag

2018-04-19 08:55:10 +02:00

blk-mq.h

Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block

2017-11-14 15:32:19 -08:00

blk-settings.c

block: remove __bio_kmap_atomic

2017-11-10 19:53:25 -07:00

blk-softirq.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-stat.c

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

blk-stat.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-sysfs.c

blk-sysfs: remove NULL pointer checking in queue_wb_lat_store

2017-11-23 22:00:17 -07:00

blk-tag.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-throttle.c

block-throttle: avoid double charge

2017-12-20 11:10:17 -07:00

blk-timeout.c

block: Fix a race between blk_cleanup_queue() and timeout handling

2017-10-30 13:28:10 -06:00

blk-wbt.c

blk-wbt: account flush requests correctly

2018-02-22 15:40:08 +01:00

blk-wbt.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-zoned.c

block: replace bi_bdev with a gendisk pointer and partitions index

2017-08-23 12:49:55 -06:00

blk.h

block: drain queue before waiting for q_usage_counter becoming zero

2018-01-05 09:09:48 -07:00

bounce.c

block: don't let passthrough IO go into .make_request_fn()

2017-12-18 13:55:43 -07:00

bsg-lib.c

bsg-lib: fix use-after-free under memory-pressure

2017-10-04 08:35:04 -06:00

bsg.c

block: pass full fmode_t to blk_verify_command

2017-11-10 19:53:25 -07:00

cfq-iosched.c

block/cfq: cache rightmost rb_node

2017-09-08 18:26:49 -07:00

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

compat_ioctl.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

deadline-iosched.c

block, scheduler: convert xxx_var_store to void

2017-08-28 10:01:08 -06:00

elevator.c

elevator: allow name aliases

2017-10-25 12:36:50 -06:00

genhd.c

block: genhd.c: fix message typo

2017-11-19 11:02:19 -07:00

ioctl.c

block: pass inclusive 'lend' parameter to truncate_inode_pages_range

2018-03-08 22:47:31 -08:00

ioprio.c

block: Add fallthrough markers to switch statements

2017-06-21 11:46:07 -06:00

Kconfig

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig.iosched

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kyber-iosched.c

block: kyber: fix domain token leak during requeue

2018-03-08 22:47:31 -08:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mq-deadline.c

mq-deadline: add 'deadline' as a name alias

2017-10-25 12:36:55 -06:00

noop-iosched.c

block: move existing elevator ops to union

2017-01-17 10:03:33 -07:00

opal_proto.h

block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled

2017-09-11 09:45:52 -06:00

partition-generic.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

scsi_ioctl.c

block: pass full fmode_t to blk_verify_command

2017-11-10 19:53:25 -07:00

sed-opal.c

block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled

2017-09-11 09:45:52 -06:00

t10-pi.c

t10-pi: Move opencoded contants to common header

2017-07-03 16:56:25 -06:00