| Message ID | 1231517970-20288-2-git-send-email-joerg.roedel@amd.com |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | David Miller |
| Headers | show |
On Fri, 9 Jan 2009 17:19:15 +0100 Joerg Roedel wrote: > Impact: add a Kconfig entry for DMA-API debugging Surely Impact: is (meant to be) different from the actual patch description... ? > Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> > --- > arch/Kconfig | 2 ++ > lib/Kconfig.debug | 11 +++++++++++ > 2 files changed, 13 insertions(+), 0 deletions(-) > > diff --git a/arch/Kconfig b/arch/Kconfig > index 2e13aa2..068554c 100644 > --- a/arch/Kconfig > +++ b/arch/Kconfig > @@ -103,3 +103,5 @@ config HAVE_CLK > The <linux/clk.h> calls support software clock gating and > thus are a key power management tool on many systems. > > +config HAVE_DMA_API_DEBUG > + bool > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index 2e75478..cba5778 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -899,6 +899,17 @@ config DYNAMIC_PRINTK_DEBUG > debugging for all modules. This mode can be turned off via the above > disable command. > > +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" > -- --- ~Randy -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/Kconfig b/arch/Kconfig index 2e13aa2..068554c 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -103,3 +103,5 @@ config HAVE_CLK The <linux/clk.h> calls support software clock gating and thus are a key power management tool on many systems. +config HAVE_DMA_API_DEBUG + bool diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 2e75478..cba5778 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -899,6 +899,17 @@ config DYNAMIC_PRINTK_DEBUG debugging for all modules. This mode can be turned off via the above disable command. +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"
Impact: add a Kconfig entry for DMA-API debugging Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/Kconfig | 2 ++ lib/Kconfig.debug | 11 +++++++++++ 2 files changed, 13 insertions(+), 0 deletions(-)