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-rw-r--r--lib/Kconfig.debug11
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"