diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index c40c7b734cd17..76555479ae369 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1634,7 +1634,7 @@ config PROVIDE_OHCI1394_DMA_INIT config DMA_API_DEBUG bool "Enable debugging of DMA-API usage" - depends on HAVE_DMA_API_DEBUG + select NEED_DMA_MAP_STATE 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 @@ -1651,6 +1651,23 @@ config DMA_API_DEBUG If unsure, say N. +config DMA_API_DEBUG_SG + bool "Debug DMA scatter-gather usage" + default y + depends on DMA_API_DEBUG + help + Perform extra checking that callers of dma_map_sg() have respected the + appropriate segment length/boundary limits for the given device when + preparing DMA scatterlists. + + This is particularly likely to have been overlooked in cases where the + dma_map_sg() API is used for general bulk mapping of pages rather than + preparing literal scatter-gather descriptors, where there is a risk of + unexpected behaviour from DMA API implementations if the scatterlist + is technically out-of-spec. + + If unsure, say N. + menuconfig RUNTIME_TESTING_MENU bool "Runtime Testing" def_bool y |