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| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-12-05 14:37:59 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-12-05 08:56:24 -0700 |
| commit | 83a13a4181b0e874d1f196e11b953c3c9f009f68 (patch) | |
| tree | c6eb8a2c2375cf75ba4937d712d625878e61c04b /scripts/gdb/linux/utils.py | |
| parent | d1fd1c201d750711e17377acb4914d3ea29a608c (diff) | |
io_uring: tweak iopoll CQE_SKIP event counting
When iopolling the userspace specifies the minimum number of "events" it
expects. Previously, we had one CQE per request, so the definition of
an "event" was unequivocal, but that's not more the case anymore with
REQ_F_CQE_SKIP.
Currently it counts the number of completed requests, replace it with
the number of posted CQEs. This allows users of the "one CQE per link"
scheme to wait for all N links in a single syscall, which is not
possible without the patch and requires extra context switches.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d5a965c4d2249827392037bbd0186f87fea49c55.1638714983.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions