blk-cgroup: introduce a new struct blkg_rwstat_sample

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When sampling the blkcg counts we don't need atomics or per-cpu
variables.  Introduce a new structure just containing plain u64
counters.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2019-06-06 12:26:21 +02:00 • committed by Jens Axboe

parent 5d0b6e48cb

commit 7af6fd9112

3 changed files with 35 additions and 36 deletions

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10

block/bfq-cgroup.c

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39

block/blk-cgroup.c

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22

include/linux/blk-cgroup.h

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