>Subject: Re: [PATCH v2 2/2] Crypto: Talitos: Support for >Async_tx XOR offload > >Ira W. Snyder wrote: >> Yes, I have used the device_prep_dma_interrupt() >functionality quite a >> while back. However, I found it to be pretty much useless. > >The specific case it is needed for Talitos/raid is a channel >switch interrupt. The interrupt causes the cleanup operation >to be run which will kick off any pending dependent operations >on the xor channel. In the raid case we only have callbacks >at the end of a chain, so we need the interrupt to kick the >engine in an operation chain like >xor->copy->xor->callback.
I am wondering if can use more callbacks to kick off pending dependent operations? Like xor->callback->copy->callback->xor->callback? - Leo _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
