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authorPavel Begunkov <asml.silence@gmail.com>2023-01-05 11:22:28 +0000
committerJens Axboe <axboe@kernel.dk>2023-01-29 15:17:40 -0700
commit46ae7eef44f6dfd825a3bcfa43392d3ad9836ada (patch)
tree8861a0baf334affd023c35b160f33d4ccbe66ba2 /Kconfig
parent326a9e482e2134d7a44b7f8f9a721b38c6bbb146 (diff)
io_uring: optimise non-timeout waiting
Unlike the jiffy scheduling version, schedule_hrtimeout() jumps a few functions before getting into schedule() even if there is no actual timeout needed. Some tests showed that it takes up to 1% of CPU cycles. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/89f880574eceee6f4899783377ead234df7b3d04.1672916894.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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