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| author | Keith Busch <[email protected]> | 2023-03-31 18:00:56 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2023-04-04 22:11:47 +0000 |
| commit | 38a8c4d1d45006841f0643f4cb29b5e50758837c (patch) | |
| tree | 05cfa4ff5174c7d5297aadbe11699f8266778deb /tools/perf/scripts/python/sctop.py | |
| parent | Merge tag 'md-fixes-2023-03-29' of https://git.kernel.org/pub/scm/linux/kerne... (diff) | |
| download | kernel-38a8c4d1d45006841f0643f4cb29b5e50758837c.tar.gz kernel-38a8c4d1d45006841f0643f4cb29b5e50758837c.zip | |
blk-mq: directly poll requests
Polling needs a bio with a valid bi_bdev, but neither of those are
guaranteed for polled driver requests. Make request based polling
directly use blk-mq's polling function instead.
When executing a request from a polled hctx, we know the request's
cookie, and that it's from a live blk-mq queue that supports polling, so
we can safely skip everything that bio_poll provides.
Cc: [email protected]
Reported-by: Martin Belanger <[email protected]>
Reported-by: Daniel Wagner <[email protected]>
Signed-off-by: Keith Busch <[email protected]>
Tested-by: Daniel Wagner <[email protected]>
Revieded-by: Daniel Wagner <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Tested-by: Shin'ichiro Kawasaki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
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