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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-18 10:37:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-18 10:37:48 +0100 |
| commit | 95f3c4ebffb5f5dd6c06bf48a8e24c7247b5139c (patch) | |
| tree | 4b2d80e82fb4fdcc0c0bde4292780c22392cd034 /lib/Kconfig.debug | |
| parent | 04dfcfcb54b073133bcca2c8f25b55e904558931 (diff) | |
| parent | 86f319529372953e353dc998bc6a761949614903 (diff) | |
Merge branch 'dma-api/debug' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into core/iommu
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1bcf9cd4baa..d9cbada7e2f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -902,6 +902,17 @@ config DYNAMIC_PRINTK_DEBUG debugging for all modules. This mode can be turned off via the above disable command. +config DMA_API_DEBUG + bool "Enable debugging of DMA-API usage" + depends on HAVE_DMA_API_DEBUG + help + Enable this option to debug the use of the DMA API by device drivers. + With this option you will be able to detect common bugs in device + drivers like double-freeing of DMA mappings or freeing mappings that + were never allocated. + This option causes a performance degredation. Use only if you want + to debug device drivers. If unsure, say N. + source "samples/Kconfig" source "lib/Kconfig.kgdb" |