Commit-ID: 5ee00bd4691e7364bb7b62e2068d473cd5cb9320 Gitweb: http://git.kernel.org/tip/5ee00bd4691e7364bb7b62e2068d473cd5cb9320 Author: Joerg Roedel <joerg.roedel@xxxxxxx> AuthorDate: Fri, 9 Jan 2009 12:14:24 +0100 Commit: Joerg Roedel <joerg.roedel@xxxxxxx> CommitDate: Thu, 5 Mar 2009 14:36:50 +0100 dma-debug: add Kconfig entry Impact: add a Kconfig entry for DMA-API debugging Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx> --- arch/Kconfig | 2 ++ lib/Kconfig.debug | 11 +++++++++++ 2 files changed, 13 insertions(+), 0 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index 550dab2..830c16a 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -106,3 +106,5 @@ 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 1bcf9cd..d9cbada 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -902,6 +902,17 @@ 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" -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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