On 2023/2/28 8:15 下午, Guangguan Wang wrote:
On 2023/2/28 19:34, Kai wrote:
On 2023/2/28 6:55 下午, Wenjia Zhang wrote:
@Kai, the performance improvement seems not so giant, but the method looks good, indeed. However, to keep the consistency of the code, I'm wondering why you only use the perf_ref for wr_tx_wait, but not for wr_reg_refcnt?
Didn't check the similar refcnt, my bad.
On the other hand, Our work is inspired by performance analysis, it seems wr_reg_refcnt is not on the IO path. It may not contribute to performance improvement.
And inspired by your comment, it seems we can also make the refcnt cdc_pend_tx_wr a perfcpu one. I will look into this.
Thanks
cdc_pend_tx_wr needs to be zero value tested every time it decreases in smc_cdc_tx_handler.
I don't think this is the right scenario for percpu_ref.
OK :)
