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(parent: 8799f87) | patch
io_uring: optimise io_uring_enter()
authorPavel Begunkov <asml.silence@gmail.com>
Fri, 19 Mar 2021 17:22:30 +0000 (17:22 +0000)
committerJens Axboe <axboe@kernel.dk>
Sun, 11 Apr 2021 23:41:58 +0000 (17:41 -0600)
commit380c3f2fc78c34aadac7678180c4c0080989f2ef
treeaea8567125c2dc92d86b77eeee73a5307149c8d4tree | snapshot
parent8799f87d9a76e33282671f5ce264d75dd609a14acommit | diff
io_uring: optimise io_uring_enter()

Add unlikely annotations, because my compiler pretty much mispredicts
every first check, and apart jumping around in the fast path, it also
generates extra instructions, like in advance setting ret value.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | history
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