Re: [PATCH v2 2/3] iio: buffer-dma: Add mmap support

2021-02-14 Thread Jonathan Cameron
On Fri, 12 Feb 2021 12:11:42 +0200 Alexandru Ardelean wrote: > From: Lars-Peter Clausen > > Add support for the new mmap interface to IIO DMA buffer. This interface > allows to directly map the backing memory of a block to userspace. This is > especially advantageous for high-speed devices wher

[PATCH v2 2/3] iio: buffer-dma: Add mmap support

2021-02-12 Thread Alexandru Ardelean
From: Lars-Peter Clausen Add support for the new mmap interface to IIO DMA buffer. This interface allows to directly map the backing memory of a block to userspace. This is especially advantageous for high-speed devices where the extra copy from kernel space to userspace of the data incurs a sign