On Tue, Dec 03, 2024 at 11:00:47AM +0530, Ekansh Gupta wrote: > Memory intensive applications(which requires more tha 4GB) that wants > to offload tasks to DSP might have to split the tasks to multiple > user PD to make the resources available. > > For every call to DSP, fastrpc driver passes the process tgid which > works as an identifier for the DSP to enqueue the tasks to specific PD. > With current design, if any process opens device node more than once > and makes PD init request, same tgid will be passed to DSP which will > be considered a bad request and this will result in failure as the same > identifier cannot be used for multiple DSP PD. > > Assign and pass a client ID to DSP which would be assigned during device > open and will be dependent on the index of session allocated for the PD. > This will allow the same process to open the device more than once and > spawn multiple dynamic PD for ease of processing. > > Signed-off-by: Ekansh Gupta <quic_ekangupt@xxxxxxxxxxx> > --- > drivers/misc/fastrpc.c | 30 ++++++++++++++++-------------- > 1 file changed, 16 insertions(+), 14 deletions(-) > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> -- With best wishes Dmitry
