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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2009-04-03 02:22:11 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-04-03 02:22:11 +0400
commitcd02938a828f4b2098a074afb7454f106f2e8df5 (patch)
tree7b543fd6aa82a62dc3a9614c26f89daca83e77d5 /lib/Kconfig.debug
parent9d681f3a1b27fdfc17ea251cf8d5f627dab34670 (diff)
parent172ef275444efa12d834fb9d1b1acdac92db47f7 (diff)
downloadlinux-cd02938a828f4b2098a074afb7454f106f2e8df5.tar.xz
Merge branch 'smsc911x-armplatforms' of git://github.com/steveglen/linux-2.6
Diffstat (limited to 'lib/Kconfig.debug')
-rw-r--r--lib/Kconfig.debug12
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0626fa4856e6..9638d99644af 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -796,6 +796,7 @@ config SYSCTL_SYSCALL_CHECK
to properly maintain and use. This enables checks that help
you to keep things correct.
+source mm/Kconfig.debug
source kernel/trace/Kconfig
config PROVIDE_OHCI1394_DMA_INIT
@@ -912,6 +913,17 @@ 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"