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(parent: 8e4d81b) | patch
dma-debug: add dumping facility via debugfs
authorCorentin Labbe <clabbe@baylibre.com>
Fri, 18 Jan 2019 13:44:18 +0000 (13:44 +0000)
committerChristoph Hellwig <hch@lst.de>
Fri, 1 Feb 2019 09:06:44 +0000 (10:06 +0100)
commit0a3b192c26da198fce38e1ee242a34f558670246
tree50c7205f8335fed7863f9446db981936cd350a6etree | snapshot
parent8e4d81b98b7859b120dd142c8634f625db118b30commit | diff
dma-debug: add dumping facility via debugfs

While debugging a DMA mapping leak, I needed to access
debug_dma_dump_mappings() but easily from user space.

This patch adds a /sys/kernel/debug/dma-api/dump file which contain all
current DMA mapping.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Documentation/DMA-API.txt diff | blob | history
kernel/dma/debug.c diff | blob | history