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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-30 13:41:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-30 13:41:00 -0700 |
| commit | 712b0006bf3a9ed0b14a56c3291975e582127766 (patch) | |
| tree | aff33e947673137ae21734321e1f036600297223 /lib/Kconfig.debug | |
| parent | e1c502482853f84606928f5a2f2eb6da1993cda1 (diff) | |
| parent | b0d44c0dbbd52effb731b1c0af9afd56215c48de (diff) | |
| download | lwn-712b0006bf3a9ed0b14a56c3291975e582127766.tar.gz lwn-712b0006bf3a9ed0b14a56c3291975e582127766.zip | |
Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits)
dma-debug: make memory range checks more consistent
dma-debug: warn of unmapping an invalid dma address
dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG
dma-debug/x86: register pci bus for dma-debug leak detection
dma-debug: add a check dma memory leaks
dma-debug: add checks for kernel text and rodata
dma-debug: print stacktrace of mapping path on unmap error
dma-debug: Documentation update
dma-debug: x86 architecture bindings
dma-debug: add function to dump dma mappings
dma-debug: add checks for sync_single_sg_*
dma-debug: add checks for sync_single_range_*
dma-debug: add checks for sync_single_*
dma-debug: add checking for [alloc|free]_coherent
dma-debug: add add checking for map/unmap_sg
dma-debug: add checking for map/unmap_page/single
dma-debug: add core checking functions
dma-debug: add debugfs interface
dma-debug: add kernel command line parameters
dma-debug: add initialization code
...
Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c
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 0626fa4856e6..58bfe7e8faba 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -912,6 +912,17 @@ config DYNAMIC_DEBUG See Documentation/dynamic-debug-howto.txt for additional information. +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" |