diff options
| author |   Paolo Valente <paolo.valente@linaro.org> | 2021-03-04 18:46:23 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-03-25 10:50:07 -0600 |
| commit | 7cc4ffc55564df4349050bcbf46fbdf3f35aef52 (patch) | |
| tree | f1ec4c78d1de2fb3ca3d2aec2e9c38a4fddddd5a /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | block, bfq: always inject I/O of queues blocked by wakers (diff) | |
| download | linux-dev-7cc4ffc55564df4349050bcbf46fbdf3f35aef52.tar.xz linux-dev-7cc4ffc55564df4349050bcbf46fbdf3f35aef52.zip | |
block, bfq: put reqs of waker and woken in dispatch list
Consider a new I/O request that arrives for a bfq_queue bfqq. If, when
this happens, the only active bfq_queues are bfqq and either its waker
bfq_queue or one of its woken bfq_queues, then there is no point in
queueing this new I/O request in bfqq for service. In fact, the
in-service queue and bfqq agree on serving this new I/O request as
soon as possible. So this commit puts this new I/O request directly
into the dispatch list.
Tested-by: Jan Kara <jack@suse.cz>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Link: https://lore.kernel.org/r/20210304174627.161-3-paolo.valente@linaro.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions