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| author |   Yufen Yu <yuyufen@huawei.com> | 2019-03-26 21:19:25 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-04-02 08:57:05 -0600 |
| commit | ff3b74b8e1675c802e09157a56c97ca38a659b9d (patch) | |
| tree | 2bcf6917ee428014a7645dc806e51a34ffbc79e4 /fs | |
| parent | block: use blk_free_flush_queue() to free hctx->fq in blk_mq_init_hctx (diff) | |
| download | linux-dev-ff3b74b8e1675c802e09157a56c97ca38a659b9d.tar.xz linux-dev-ff3b74b8e1675c802e09157a56c97ca38a659b9d.zip | |
blk-mq: add trace block plug and unplug for multiple queues
For now, we just trace plug for single queue device or drivers
provide .commit_rqs, and have not trace plug for multiple queues
device. But, unplug events will be recorded when call
blk_mq_flush_plug_list(). Then, trace events will be asymmetrical,
just have unplug and without plug.
This patch add trace plug and unplug for multiple queues device in
blk_mq_make_request(). After that, we can accurately trace plug and
unplug for multiple queues.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions