linux-kernel - Re: [PATCH] ieee1394 : dump mmapped video1394 buffers in core files

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Message-ID: <20080704204919.GA8991@frolo.macqel>
Date:	Fri, 4 Jul 2008 22:49:19 +0200
From:	Philippe De Muyter <phdm@...qel.be>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	linux1394-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ieee1394 : dump mmapped video1394 buffers in core files

On Fri, Jul 04, 2008 at 08:33:17PM +0200, Stefan Richter wrote:
> Philippe De Muyter wrote:
>> Currently, core files do not contain the mmapped memory of the video1394
>> or dv1394 devices,
>
> Ditto with /dev/raw1394 when the rawiso ioctl API is used.
>
>> which contain the actual video input, making it
>> impossible to analyse the cause of abnormal program termination for
>> image analysis or (de)compression software.  Fix that.
>> Signed-off-by: Philippe De Muyter <phdm@...qel.be>
>> ---
>> diff -r ced66ca0044f drivers/ieee1394/dma.c
>> --- a/drivers/ieee1394/dma.c	Mon Jun 30 08:58:09 2008 -0700
>> +++ b/drivers/ieee1394/dma.c	Thu Jul  3 18:40:24 2008 +0200
>> @@ -274,7 +274,7 @@ int dma_region_mmap(struct dma_region *d
>>  	vma->vm_ops = &dma_region_vm_ops;
>>  	vma->vm_private_data = dma;
>>  	vma->vm_file = file;
>> -	vma->vm_flags |= VM_RESERVED;
>> +	vma->vm_flags |= VM_RESERVED | VM_ALWAYSDUMP;
>>   	return 0;
>>  }
>
> I'll commit it with the title changed to "dump mmapped iso buffers in core 
> files" if that's OK.

OK for me

Philippe
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