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| author | David Rientjes <rientjes@google.com> | 2020-06-21 13:43:02 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-06-29 10:05:21 +0200 |
| commit | 71cdec4fab76667dabdbb2ca232b039004ebd40f (patch) | |
| tree | d02df4dce811a3f12c8e3ffe27e8e04acbb46f69 /Documentation | |
| parent | 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68 (diff) | |
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>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions