Hi Fenghua, On Fri, 2023-04-28 at 17:14 -0700, Fenghua Yu wrote: > Hi, Tom, > > On 4/28/23 13:55, Tom Zanussi wrote: > > From: Dave Jiang <dave.jiang@xxxxxxxxx> > > > > With the possibility of multiple wq drivers that can be bound to > > the wq, > > the user config tool accel-config needs a way to know which wq > > driver to > > bind to the wq. Introduce per wq driver_name sysfs attribute where > > the user > > can indicate the driver to be bound to the wq. This allows accel- > > config to > > just bind to the driver using wq->driver_name. > > > > Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx> > > Signed-off-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx> > > --- > > ... > > > diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h > > index 7ced8d283d98..505118fc19de 100644 > > --- a/drivers/dma/idxd/idxd.h > > +++ b/drivers/dma/idxd/idxd.h > > @@ -214,6 +214,8 @@ struct idxd_wq { > > char name[WQ_NAME_SIZE + 1]; > > u64 max_xfer_bytes; > > u32 max_batch_size; > > + > > + char driver_name[WQ_NAME_SIZE + 1]; > > It's confused to use "WQ_NAME_SIZE" for driver name size. > Maybe it's better to have a new definition "DRIVER_NAME_SIZE"? > BTW, WQ_NAME_SIZE is 1024 which is unnecessary big for storing > driver_name[] in the structure. It would be better to have a smaller > size (e.g. 128) in DRIVER_NAME_SIZE. Yes, that makes sense - I'll add an IAA_DRIVER_NAME_SIZE of 128 and use that instead. Thanks, Tom > > Thanks. > > -Fenghua