[Code Clean] Clarify once_flag setting for kernel autotune module (#44141)
[Code Clean] Clarify once_flag setting for kernel autotune module (#44141)

* first commit

* clarify the quotes

* change code style format

* rerun for ci
luotao1/Paddle,PaddlePaddle/Paddle,PaddlePaddle/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,luotao1/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,PaddlePaddle/Paddle,luotao1/Paddle