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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-03-21 22:02:22 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-04-24 17:34:16 -0600 |
| commit | a538be5be328229d4da3343d4d6514bb4d5c3d5d (patch) | |
| tree | 786c3125d1fa4d04af507c3346fd28b939c3e982 /lib/string_helpers.c | |
| parent | 7819a1f6ac0393f1f7861dfece6ffd5ef010f0f9 (diff) | |
io_uring: optimise io_free_batch_list
We do several req->flags checks in the fast path of
io_free_batch_list(). One explicit check of REQ_F_REFCOUNT, and two
other hidden in io_queue_next() and io_dismantle_req(). Moreover, there
is a io_req_put_rsrc_locked() call in between, so there is no hope
req->flags will be preserved in registers.
All those flags if not a slow path than definitely a slower path, so
put them all under a single flags mask check and save several mem
reloads and ifs.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0fb493f73f2009aea395c570c2932fecaa4e1244.1647897811.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions