kernel/linux.git/block/Kconfig.iosched, branch v6.6.131

block: Default to use cgroup support for BFQ

2023-01-30T16:42:42+00:00

Assuming that both Kconfig options, BLK_CGROUP and IOSCHED_BFQ are set, we most likely want cgroup support for BFQ too (BFQ_GROUP_IOSCHED), so let's make it default y. Signed-off-by: Ulf Hansson Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20230130121240.159456-1-ulf.hansson@linaro.org Signed-off-by: Jens Axboe

block: only build the icq tracking code when needed

2021-12-16T17:59:02+00:00

Only bfq needs to code to track icq, so make it conditional. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20211209063131.18537-12-hch@lst.de Signed-off-by: Jens Axboe

block: simplify Kconfig files

2021-10-18T12:17:35+00:00

Everything under block/ depends on BLOCK. BLOCK_HOLDER_DEPRECATED is selected from drivers/md/Kconfig, which is entirely dependent on BLOCK. Extend the 'if BLOCK' ... 'endif' so it covers the whole block/Kconfig. Also, clean up the definition of BLOCK_COMPAT and BLK_MQ_PCI because COMPAT and PCI are boolean. Signed-off-by: Masahiro Yamada Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20210927140000.866249-3-masahiroy@kernel.org Signed-off-by: Jens Axboe

Revert "block/mq-deadline: Add cgroup support"

2021-08-11T19:47:26+00:00

This reverts commit 08a9ad8bf607 ("block/mq-deadline: Add cgroup support") and a follow-up commit c06bc5a3fb42 ("block/mq-deadline: Remove a WARN_ON_ONCE() call"). The added cgroup support has the following issues: * It breaks cgroup interface file format rule by adding custom elements to a nested key-value file. * It registers mq-deadline as a cgroup-aware policy even though all it's doing is collecting per-cgroup stats. Even if we need these stats, this isn't the right way to add them. * It hasn't been reviewed from cgroup side. Cc: Bart Van Assche Cc: Jens Axboe Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe

block/mq-deadline: Add cgroup support

2021-06-21T21:03:41+00:00

Maintain statistics per cgroup and export these to user space. These statistics are essential for verifying whether the proper I/O priorities have been assigned to requests. An example of the statistics data with this patch applied: $ cat /sys/fs/cgroup/io.stat 11:2 rbytes=0 wbytes=0 rios=3 wios=0 dbytes=0 dios=0 [NONE] dispatched=0 inserted=0 merged=171 [RT] dispatched=0 inserted=0 merged=0 [BE] dispatched=0 inserted=0 merged=0 [IDLE] dispatched=0 inserted=0 merged=0 8:32 rbytes=2142720 wbytes=0 rios=105 wios=0 dbytes=0 dios=0 [NONE] dispatched=0 inserted=0 merged=171 [RT] dispatched=0 inserted=0 merged=0 [BE] dispatched=0 inserted=0 merged=0 [IDLE] dispatched=0 inserted=0 merged=0 Cc: Damien Le Moal Cc: Hannes Reinecke Cc: Christoph Hellwig Cc: Ming Lei Cc: Johannes Thumshirn Cc: Himanshu Madhani Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20210618004456.7280-16-bvanassche@acm.org Signed-off-by: Jens Axboe

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada

blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT

2019-11-07T19:28:13+00:00

blkg_rwstat is now only used by bfq-iosched and blk-throtl when on cgroup1. Let's move it into its own files and gate it behind a config option. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe

docs: block: convert to ReST

2019-07-15T12:20:27+00:00

Rename the block documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab

block: rename CONFIG_DEBUG_BLK_CGROUP to CONFIG_BFQ_CGROUP_DEBUG

2019-06-20T16:32:35+00:00

This option is entirely bfq specific, give it an appropinquate name. Also make it depend on CONFIG_BFQ_GROUP_IOSCHED in Kconfig, as all the functionality already does so anyway. Acked-by: Tejun Heo Acked-by: Paolo Valente Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

block: remove legacy IO schedulers

2018-11-07T20:42:32+00:00

Retain the deadline documentation, as that carries over to mq-deadline as well. Tested-by: Ming Lei Reviewed-by: Omar Sandoval Signed-off-by: Jens Axboe