On Fri, Feb 01, 2019 at 03:15:54PM +0800, Zhou Wang wrote: > > > Polling in softirq context is unacceptable. Can't your hardware > > send interrupts to signal completion? What is the average speed > > of processing a single 1500-byte packet on your hardware? > > Our hardware supports interrupt. In fact, implementation of compress/decompress > interface of crypto_alg in v1 was done using interrupt: > > compress/decompress: > send task to hardware > wait task finished(wait_for_completion_timeout) > > In irq handler: > complete > > However, there is get_cpu/put_cpu in scomp, wait and complete in above has to be > changed to poll: > > compress/decompress: > send task to hardware > check if task is finished If your hardware supports interrupts then you should be using the acomp interface and not scomp. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
