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authorPaolo Valente <paolo.valente@linaro.org>2017-04-19 08:48:24 -0600
committerJens Axboe <axboe@fb.com>2017-04-19 08:48:24 -0600
commitea25da48086d3bbebf3a2eeff387ea00ed96f5c4 (patch)
tree1e7858910a647ae1a174ad019304bc3ffc2b5926 /block/blk-wbt.h
parent6fa3e8d34204d532268ddb4dc5d2a904197c972d (diff)
downloadlinux-0-day-ea25da48086d3bbebf3a2eeff387ea00ed96f5c4.tar.gz
block, bfq: split bfq-iosched.c into multiple source files
The BFQ I/O scheduler features an optimal fair-queuing (proportional-share) scheduling algorithm, enriched with several mechanisms to boost throughput and reduce latency for interactive and real-time applications. This makes BFQ a large and complex piece of code. This commit addresses this issue by splitting BFQ into three main, independent components, and by moving each component into a separate source file: 1. Main algorithm: handles the interaction with the kernel, and decides which requests to dispatch; it uses the following two further components to achieve its goals. 2. Scheduling engine (Hierarchical B-WF2Q+ scheduling algorithm): computes the schedule, using weights and budgets provided by the above component. 3. cgroups support: handles group operations (creation, destruction, move, ...). Signed-off-by: Paolo Valente <paolo.valente@linaro.org> Signed-off-by: Jens Axboe <axboe@fb.com>
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