Max Gurtovoy fe631457ff blk-mq: map all HWQ also in hyperthreaded system ... This patch performs sequential mapping between CPUs and queues. In case the system has more CPUs than HWQs then there are still CPUs to map to HWQs. In hyperthreaded system, map the unmapped CPUs and their siblings to the same HWQ. This actually fixes a bug that found unmapped HWQs in a system with 2 sockets, 18 cores per socket, 2 threads per core (total 72 CPUs) running NVMEoF (opens upto maximum of 64 HWQs). Performance results running fio (72 jobs, 128 iodepth) using null_blk (w/w.o patch): bs IOPS(read submit_queues=72) IOPS(write submit_queues=72) IOPS(read submit_queues=24) IOPS(write submit_queues=24) ----- ---------------------------- ------------------------------ ---------------------------- ----------------------------- 512 4890.4K/4723.5K 4524.7K/4324.2K 4280.2K/4264.3K 3902.4K/3909.5K 1k 4910.1K/4715.2K 4535.8K/4309.6K 4296.7K/4269.1K 3906.8K/3914.9K 2k 4906.3K/4739.7K 4526.7K/4330.6K 4301.1K/4262.4K 3890.8K/3900.1K 4k 4918.6K/4730.7K 4556.1K/4343.6K 4297.6K/4264.5K 3886.9K/3893.9K 8k 4906.4K/4748.9K 4550.9K/4346.7K 4283.2K/4268.8K 3863.4K/3858.2K 16k 4903.8K/4782.6K 4501.5K/4233.9K 4292.3K/4282.3K 3773.1K/3773.5K 32k 4885.8K/4782.4K 4365.9K/4184.2K 4307.5K/4289.4K 3780.3K/3687.3K 64k 4822.5K/4762.7K 2752.8K/2675.1K 4308.8K/4312.3K 2651.5K/2655.7K 128k 2388.5K/2313.8K 1391.9K/1375.7K 2142.8K/2152.2K 1395.5K/1374.2K Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2017-06-29 08:40:11 -06:00
..
partitions	partitions/ldm: switch to use uuid_t	2017-06-05 16:59:14 +02:00
badblocks.c	block: Add fallthrough markers to switch statements	2017-06-21 11:46:07 -06:00
bfq-cgroup.c	block, bfq: access and cache blkg data only when safe	2017-06-08 09:51:10 -06:00
bfq-iosched.c	block, bfq: update wr_busy_queues if needed on a queue split	2017-06-27 12:30:47 -06:00
bfq-iosched.h	block, bfq: access and cache blkg data only when safe	2017-06-08 09:51:10 -06:00
bfq-wf2q.c	block, bfq: use pointer entity->sched_data only if set	2017-05-10 07:39:43 -06:00
bio-integrity.c	Linux 4.12-rc5	2017-06-12 08:30:13 -06:00
bio.c	block: add support for write hints in a bio	2017-06-27 12:05:27 -06:00
blk-cgroup.c	block: Avoid that blk_exit_rl() triggers a use-after-free	2017-06-01 13:07:55 -06:00
blk-core.c	block: don't set bounce limit in blk_init_queue	2017-06-27 12:13:45 -06:00
blk-exec.c	block: introduce new block status code type	2017-06-09 09:27:32 -06:00
blk-flush.c	block: Check locking assumptions at runtime	2017-06-20 19:27:14 -06:00
blk-integrity.c	block: switch bios to blk_status_t	2017-06-09 09:27:32 -06:00
blk-ioc.c	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-03-03 10:53:35 -08:00
blk-lib.c	block: remove the discard_zeroes_data flag	2017-04-08 11:25:38 -06:00
blk-map.c	blk-map: call blk_queue_bounce from blk_rq_append_bio	2017-06-27 12:13:21 -06:00
blk-merge.c	block: add support for write hints in a bio	2017-06-27 12:05:27 -06:00
blk-mq-cpumap.c	blk-mq: map all HWQ also in hyperthreaded system	2017-06-29 08:40:11 -06:00
blk-mq-debugfs.c	blk-mq: expose write hints through debugfs	2017-06-27 12:05:31 -06:00
blk-mq-debugfs.h	mq-deadline: add debugfs attributes	2017-05-04 08:25:17 -06:00
blk-mq-pci.c	blk-mq-pci: Fix two spelling mistakes	2017-03-29 11:09:51 -06:00
blk-mq-sched.c	Merge commit '8e8320c9315c' into for-4.13/block	2017-06-22 21:55:24 -06:00
blk-mq-sched.h	Merge commit '8e8320c9315c' into for-4.13/block	2017-06-22 21:55:24 -06:00
blk-mq-sysfs.c	blk-mq: untangle debugfs and sysfs	2017-05-04 08:24:13 -06:00
blk-mq-tag.c	blk-mq: add shallow depth option for blk_mq_get_tag()	2017-04-14 14:06:54 -06:00
blk-mq-tag.h	blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset	2017-03-02 08:56:04 -07:00
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: don't bounce by default	2017-06-27 12:13:45 -06:00
blk-mq.h	blk-mq: remove __blk_mq_alloc_request	2017-06-18 10:08:55 -06:00
blk-settings.c	block: don't bother with bounce limits for make_request drivers	2017-06-27 12:13:45 -06:00
blk-softirq.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/topology.h>	2017-03-02 08:42:26 +01:00
blk-stat.c	blk-stat: don't use this_cpu_ptr() in a preemptable section	2017-05-10 07:40:18 -06:00
blk-stat.h	blk-stat: kill blk_stat_rq_ddir()	2017-04-21 07:56:23 -06:00
blk-sysfs.c	block: Fix a blk_exit_rl() regression	2017-06-14 13:27:50 -06:00
blk-tag.c	block: Check locking assumptions at runtime	2017-06-20 19:27:14 -06:00
blk-throttle.c	blk-throttle: set default latency baseline for harddisk	2017-06-07 09:09:32 -06:00
blk-timeout.c	block: Check locking assumptions at runtime	2017-06-20 19:27:14 -06:00
blk-wbt.c	blk-stat: kill blk_stat_rq_ddir()	2017-04-21 07:56:23 -06:00
blk-wbt.h	block: Make writeback throttling defaults consistent for SQ devices	2017-04-19 08:49:03 -06:00
blk-zoned.c	block: Rename blk_queue_zone_size and bdev_zone_size	2017-01-12 07:58:32 -07:00
blk.h	block: move bounce declarations to block/blk.h	2017-06-27 12:13:45 -06:00
bounce.c	block: remove the queue_bounce_pfn helper	2017-06-27 12:13:45 -06:00
bsg-lib.c	block: introduce new block status code type	2017-06-09 09:27:32 -06:00
bsg.c	block: Make most scsi_req_init() calls implicit	2017-06-20 19:27:14 -06:00
cfq-iosched.c	Linux 4.12-rc5	2017-06-12 08:30:13 -06:00
cmdline-parser.c	block: remove unrelated header files and export symbol	2014-01-21 20:18:26 -08:00
compat_ioctl.c	block: remove the discard_zeroes_data flag	2017-04-08 11:25:38 -06:00
deadline-iosched.c	block: enumify ELEVATOR_*_MERGE	2017-02-08 13:43:06 -07:00
elevator.c	block: Add fallthrough markers to switch statements	2017-06-21 11:46:07 -06:00
genhd.c	block: Constify disk_type	2017-06-20 19:27:14 -06:00
ioctl.c	block: remove the discard_zeroes_data flag	2017-04-08 11:25:38 -06:00
ioprio.c	block: Add fallthrough markers to switch statements	2017-06-21 11:46:07 -06:00
Kconfig	Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm	2017-05-12 15:43:10 -07:00
Kconfig.iosched	block, bfq: add full hierarchical scheduling and cgroups support	2017-04-19 08:30:26 -06:00
kyber-iosched.c	blk-mq-sched: unify request prepare methods	2017-06-18 10:08:55 -06:00
Makefile	block, bfq: split bfq-iosched.c into multiple source files	2017-04-19 08:48:24 -06:00
mq-deadline.c	mq-deadline: add debugfs attributes	2017-05-04 08:25:17 -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: allocate struct opal_dev dynamically	2017-02-17 12:41:47 -07:00
partition-generic.c	block: fix an error code in add_partition()	2017-05-23 08:41:59 -06:00
scsi_ioctl.c	block: Change argument type of scsi_req_init()	2017-06-20 19:27:14 -06:00
sed-opal.c	block: sed-opal: Tone down all the pr_* to debugs	2017-04-07 14:24:16 -06:00
t10-pi.c	block: Dedicated error code fixups	2017-06-16 09:47:15 -06:00