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linux/kernel/dma
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David Rientjes 71cdec4fab dma-mapping: warn when coherent pool is depleted 
When a DMA coherent pool is depleted, allocation failures may or may not
get reported in the kernel log depending on the allocator.

The admin does have a workaround, however, by using coherent_pool= on the
kernel command line.

Provide some guidance on the failure and a recommended minimum size for
the pools (double the size).

Signed-off-by: David Rientjes <rientjes@google.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-06-29 10:05:21 +02:00
..
coherent.c
dma-coherent: fix integer overflow in the reserved-memory dma allocation
2020-03-16 10:43:02 +01:00
contiguous.c
dma-contiguous: fix comment for dma_release_from_contiguous
2020-04-25 13:17:06 +02:00
debug.c
dma-debug: make __dma_entry_alloc_check_leak() static
2020-04-20 12:05:18 +02:00
direct.c
dma-direct: add missing set_memory_decrypted() for coherent mapping
2020-06-23 14:13:54 +02:00
dummy.c
dma-mapping: factor out dummy DMA ops
2018-12-13 21:06:12 +01:00
Kconfig
dma-mapping: DMA_COHERENT_POOL should select GENERIC_ALLOCATOR
2020-06-23 14:13:58 +02:00
Makefile
dma-remap: separate DMA atomic pools from direct remap code
2020-04-20 12:08:45 +02:00
mapping.c
dma-mapping: Fix dma_pgprot() for unencrypted coherent pages
2020-03-17 11:52:58 +01:00
pool.c
dma-mapping: warn when coherent pool is depleted
2020-06-29 10:05:21 +02:00
remap.c
dma-remap: align the size in dma_common_*_remap()
2020-06-23 14:14:41 +02:00
swiotlb.c
dma-direct: improve swiotlb error reporting
2020-02-05 18:53:05 +01:00
virt.c
dma-mapping: zero memory returned from dma_alloc_*
2018-12-20 08:13:52 +01:00