linux-kernel - Re: [PATCH v1] misc: fastrpc: Move fastrpc driver to misc/fastrpc/

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Date: Wed, 19 Jun 2024 10:05:00 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Ekansh Gupta <quic_ekangupt@...cinc.com>
Cc: Oded Gabbay <ogabbay@...nel.org>, srinivas.kandagatla@...aro.org, 
	linux-arm-msm@...r.kernel.org, gregkh@...uxfoundation.org, 
	quic_bkumar@...cinc.com, linux-kernel@...r.kernel.org, 
	quic_chennak@...cinc.com, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v1] misc: fastrpc: Move fastrpc driver to misc/fastrpc/

On Wed, 19 Jun 2024 at 10:01, Ekansh Gupta <quic_ekangupt@...cinc.com> wrote:
>
>
>
> On 6/19/2024 12:21 PM, Dmitry Baryshkov wrote:
> > On Wed, 19 Jun 2024 at 09:45, Ekansh Gupta <quic_ekangupt@...cinc.com> wrote:
> >>
> >>
> >> On 6/12/2024 11:58 PM, Dmitry Baryshkov wrote:
> >>> On Wed, Jun 12, 2024 at 12:17:28PM +0530, Ekansh Gupta wrote:
> >>>> Move fastrpc.c from misc/ to misc/fastrpc/. New C files are planned
> >>>> to be added for PD notifications and other missing features. Adding
> >>>> and maintaining new files from within fastrpc directory would be easy.
> >>>>
> >>>> Example of feature that is being planned to be introduced in a new C
> >>>> file:
> >>>> https://lore.kernel.org/all/20240606165939.12950-6-quic_ekangupt@quicinc.com/
> >>>>
> >>>> Signed-off-by: Ekansh Gupta <quic_ekangupt@...cinc.com>
> >>>> ---
> >>>>  MAINTAINERS                          |  2 +-
> >>>>  drivers/misc/Kconfig                 | 13 +------------
> >>>>  drivers/misc/Makefile                |  2 +-
> >>>>  drivers/misc/fastrpc/Kconfig         | 16 ++++++++++++++++
> >>>>  drivers/misc/fastrpc/Makefile        |  2 ++
> >>>>  drivers/misc/{ => fastrpc}/fastrpc.c |  0
> >>>>  6 files changed, 21 insertions(+), 14 deletions(-)
> >>>>  create mode 100644 drivers/misc/fastrpc/Kconfig
> >>>>  create mode 100644 drivers/misc/fastrpc/Makefile
> >>>>  rename drivers/misc/{ => fastrpc}/fastrpc.c (100%)
> >>> Please consider whether it makes sense to move to drivers/accel instead
> >>> (and possibly writing a better Kconfig entry, specifying that the driver
> >>> is to be used to offload execution to the DSP).
> >> Planning to keep the driver to misc/ only as part of this patch. Moving to accel/ might
> >> introduce some conventions to be followed which might require significant changes
> >> in driver.
> > To me this sounds like "we are trying to avoid following the
> > conventions by hiding in the shadows".
> Not trying to avoid, just trying to look into this separately as the need to take ABI also in account which
> includes current device nodes and the uapi header which is present in uapi/misc/fastrpc.h whereas I see all
> accel driver uapi headers are part of uapi/drm/.

I'd say this depends on the accel/ maintainer's opinion.

>
> Will be taking inputs from fastrpc maintainers also.
> >> I'll write more meaningful Kconfig entry in next spin.
> >>
>


-- 
With best wishes
Dmitry