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(parent: a31fba5) | patch
dma-debug: add function to dump dma mappings
authorDavid Woodhouse <dwmw2@infradead.org>
Thu, 12 Feb 2009 15:19:13 +0000 (16:19 +0100)
committerJoerg Roedel <joerg.roedel@amd.com>
Tue, 17 Mar 2009 11:56:39 +0000 (12:56 +0100)
commitac26c18bd35d982d1ba06020a992b1085fefc3e2
tree33f7fe1a22848c7dfdd002298f27efff103480a4tree | snapshot
parenta31fba5d68cebf8f5fefd03e079dab94875e25f5commit | diff
dma-debug: add function to dump dma mappings

This adds a function to dump the DMA mappings that the debugging code is
aware of -- either for a single device, or for _all_ devices.

This can be useful for debugging -- sticking a call to it in the DMA
page fault handler, for example, to see if the faulting address _should_
be mapped or not, and hence work out whether it's IOMMU bugs we're
seeing, or driver bugs.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
include/linux/dma-debug.h diff | blob | history
lib/dma-debug.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git