Messages in this thread | | | From | Ricardo Ribalda <> | Date | Tue, 10 Nov 2020 10:33:05 +0100 | Subject | Re: [PATCH 8/8] WIP: add a dma_alloc_contiguous API |
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Hi Christoph
On Tue, Nov 10, 2020 at 10:25 AM Christoph Hellwig <hch@lst.de> wrote: > > On Mon, Nov 09, 2020 at 03:53:55PM +0100, Ricardo Ribalda wrote: > > Hi Christoph > > > > I have started now to give a try to your patchset. Sorry for the delay. > > > > For uvc I have prepared this patch: > > https://github.com/ribalda/linux/commit/9094fe223fe38f8c8ff21366d893b43cbbdf0113 > > > > I have tested successfully in a x86_64 noteboot..., yes I know there > > is no change for that platform :). > > I am trying to get hold of an arm device that can run the latest > > kernel from upstream. > > > > On the meanwhile if you could take a look to the patch to verify that > > this the way that you expect the drivers to use your api I would > > appreciate it > > This looks pretty reaosnable. >
Great
Also FYI, I managed to boot an ARM device with that tree. But I could not test the uvc driver (it was a remote device with no usb device attached)
Hopefully I will be able to test it for real this week.
Any suggestions for how to measure performance difference?
Thanks!
> Note that ifdef CONFIG_DMA_NONCOHERENT in the old code doesn't actually > work, as that option is an internal thing just for mips and sh..
-- Ricardo Ribalda
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