From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Subject: Re: WARN_ON(irqs_disabled()) in dma_free_attrs?
Date: Sat, 3 Mar 2018 17:12:49 +0100
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To: Fredrik Noring <noring-zgYzP9v7iJcdnm+yROfE0A@public.gmane.org>
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On Sat, Mar 03, 2018 at 09:22:35AM +0100, Fredrik Noring wrote:
> Critically, it performs the following calls:

If it is allocating / freeing this memory all the time in the hot path
it should really use a dma pool (see include/ilinux/dmapool.h).
The dma coherent APIs aren't really built for being called in the
hot path.