On Fri, Dec 01, 2023 at 07:37:39PM +0800, Edward Adam Davis wrote: > > Reduce the scope of critical zone protection. > The original critical zone contains a too large range, especially like > copy_to_user() should not be included in the critical zone. Which part in particular is taking 143 seconds? The buffer is only 128 bytes long. Why is a 128-byte copy taking 143 seconds, even with a page fault? Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
