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0f78399551
This reverts commit08a9ad8bf6("block/mq-deadline: Add cgroup support") and a follow-up commitc06bc5a3fb("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 <bvanassche@acm.org> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
49 lines
1.3 KiB
Text
49 lines
1.3 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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if BLOCK
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menu "IO Schedulers"
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config MQ_IOSCHED_DEADLINE
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tristate "MQ deadline I/O scheduler"
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default y
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help
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MQ version of the deadline IO scheduler.
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config MQ_IOSCHED_KYBER
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tristate "Kyber I/O scheduler"
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default y
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help
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The Kyber I/O scheduler is a low-overhead scheduler suitable for
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multiqueue and other fast devices. Given target latencies for reads and
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synchronous writes, it will self-tune queue depths to achieve that
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goal.
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config IOSCHED_BFQ
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tristate "BFQ I/O scheduler"
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help
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BFQ I/O scheduler for BLK-MQ. BFQ distributes the bandwidth of
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of the device among all processes according to their weights,
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regardless of the device parameters and with any workload. It
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also guarantees a low latency to interactive and soft
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real-time applications. Details in
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Documentation/block/bfq-iosched.rst
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config BFQ_GROUP_IOSCHED
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bool "BFQ hierarchical scheduling support"
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depends on IOSCHED_BFQ && BLK_CGROUP
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select BLK_CGROUP_RWSTAT
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help
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Enable hierarchical scheduling in BFQ, using the blkio
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(cgroups-v1) or io (cgroups-v2) controller.
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config BFQ_CGROUP_DEBUG
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bool "BFQ IO controller debugging"
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depends on BFQ_GROUP_IOSCHED
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help
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Enable some debugging help. Currently it exports additional stat
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files in a cgroup which can be useful for debugging.
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endmenu
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endif
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