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authorLinus Walleij <linus.walleij@stericsson.com>2010-02-09 22:34:54 +0100
committerDan Williams <dan.j.williams@intel.com>2010-03-01 22:13:20 -0700
commit6c664a8915f5341c2e7f1df0bb4b9b4a88f6ad77 (patch)
tree031bab9e62b2948ef3fc8a0a3223e8074bc201bb /drivers/dma
parentf1acb878b6070941e844dfc4ca1b3b9e5a70426c (diff)
downloadblackbird-op-linux-6c664a8915f5341c2e7f1df0bb4b9b4a88f6ad77.tar.gz
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Debugging options for the DMA engine subsystem
This adds Kconfig options for DEBUG and VERBOSE_DEBUG to the DMA engine subsystem, I got tired of editing the Makefile manually each time I want to debug things in here, modelled this on the debug switches for other subsystems and works like a charm when working on our DMA engines. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/Kconfig16
-rw-r--r--drivers/dma/Makefile7
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index e02d74b1e892..1f4bbd66258d 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -13,6 +13,22 @@ menuconfig DMADEVICES
DMA Device drivers supported by the configured arch, it may
be empty in some cases.
+config DMADEVICES_DEBUG
+ bool "DMA Engine debugging"
+ depends on DMADEVICES != n
+ help
+ This is an option for use by developers; most people should
+ say N here. This enables DMA engine core and driver debugging.
+
+config DMADEVICES_VDEBUG
+ bool "DMA Engine verbose debugging"
+ depends on DMADEVICES_DEBUG != n
+ help
+ This is an option for use by developers; most people should
+ say N here. This enables deeper (more verbose) debugging of
+ the DMA engine core and drivers.
+
+
if DMADEVICES
comment "DMA Devices"
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 807053d48232..54112d67ab2e 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -1,3 +1,10 @@
+ifeq ($(CONFIG_DMADEVICES_DEBUG),y)
+ EXTRA_CFLAGS += -DDEBUG
+endif
+ifeq ($(CONFIG_DMADEVICES_VDEBUG),y)
+ EXTRA_CFLAGS += -DVERBOSE_DEBUG
+endif
+
obj-$(CONFIG_DMA_ENGINE) += dmaengine.o
obj-$(CONFIG_NET_DMA) += iovlock.o
obj-$(CONFIG_DMATEST) += dmatest.o
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