diff options
| author | Pavel Begunkov <[email protected]> | 2021-09-24 21:59:57 +0100 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-10-19 05:49:53 -0600 |
| commit | 2a56a9bd64dbdff4fe5cbe00b20014da07694a78 (patch) | |
| tree | 8b88d171b8ba8e2fa791465b5c15400d6dd4d863 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | f15a3431775a598ed89028acee334200160cc2d6 (diff) | |
io_uring: remove drain_active check from hot path
req->ctx->active_drain is a bit too expensive, partially because of two
dereferences. Do a trick, if we see it set in io_init_req(), set
REQ_F_FORCE_ASYNC and it automatically goes through a slower path where
we can catch it. It's nearly free to do in io_init_req() because there
is already ->restricted check and it's in the same byte of a bitmask.
Signed-off-by: Pavel Begunkov <[email protected]>
Link: https://lore.kernel.org/r/d7e7ddc63c15e8a300833132abb3eb8fd3918aef.1632516769.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions