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author | Jens Axboe <axboe@kernel.dk> | 2024-11-26 13:42:27 -0700 |
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committer | Jens Axboe <axboe@kernel.dk> | 2024-11-26 13:42:27 -0700 |
commit | 49c5c63d48eb5b110580e4c4b937f0006fcc9b10 (patch) | |
tree | 2833900889cb4ff8ab784b5a17af306694c5f533 /tools/perf/scripts/python/exported-sql-viewer.py | |
parent | 0c0a4eae26ac78379d0c1db053de168a8febc6c9 (diff) | |
download | linux-stable-49c5c63d48eb5b110580e4c4b937f0006fcc9b10.tar.gz linux-stable-49c5c63d48eb5b110580e4c4b937f0006fcc9b10.tar.bz2 linux-stable-49c5c63d48eb5b110580e4c4b937f0006fcc9b10.zip |
io_uring: fix task_work cap overshooting
A previous commit fixed task_work overrunning by a lot more than what
the user asked for, by adding a retry list. However, it didn't cap the
overall count, hence for multiple task_work runs inside the same wait
loop, it'd still overshoot the target by potentially a large amount.
Cap it generally inside the wait path. Note that this will still
overshoot the default limit of 20, but should overshoot by no more than
limit-1 in addition to the limit. That still provides a ceiling over how
much task_work will be run, rather than still having gaps where it was
uncapped essentially.
Fixes: f46b9cdb22f7 ("io_uring: limit local tw done")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions