projects / linux-2.6-block.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 8626b0f) | 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>
Mon, 22 Mar 2021 13:42:50 +0000 (07:42 -0600)
commitf8f54b198ca05708b4e4be49a13b307e5b156c63
tree5c0c64902080914f78430f544de60c65059292f0tree
parent8626b0f4facf48ee74bcb892c73139e76adc572ccommit | 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 | blame | history
Linux 6.x block layer and io_uring tree(s)