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Contributor
Contributor
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Registered: ‎01-29-2019

send a signal from kernel driver to user app

Hi. I use zynqMP and DMA in PL.

I wrote an app for xdma for transfer data from PL to PS. my app is based on polling idle bit in status register of dma.

I need to change it for use interrupt. 

i know with /proc, I can send signal and event from kernel to user; but xdma driver doesnt have /proc file (or I cant find it!).

Is there a solution for sending signal without /proc? or can i make a file in driver for using send signal?

driver of xdma is in linux git path: .../drivers/dma/xilinx/xilinx_dma.c

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