Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 3/4] dma-debug: add dma_debug_driver kernel command line | Date | Thu, 28 May 2009 17:19:30 +0200 |
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This patch add the dma_debug_driver= boot parameter to enable the driver filter for early boot.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- lib/dma-debug.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 65043c7..7b51fa4 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -1098,3 +1098,22 @@ void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, } EXPORT_SYMBOL(debug_dma_sync_sg_for_device); +static int __init parse_dma_debug_driver(char *str) +{ + int i; + + for (i = 0; i < NAME_MAX_LEN - 1; ++i, ++str) { + current_driver_name[i] = *str; + if (*str == ' ' || *str == '\t' || isspace(*str) || *str == 0) + break; + } + current_driver_name[i] = 0; + + if (current_driver_name[0]) + printk(KERN_INFO "DMA-API: enable driver filter for " + "driver [%s]\n", current_driver_name); + + + return 1; +} +__setup("dma_debug_driver=", parse_dma_debug_driver); -- 1.6.3.1
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