ieee1394: dump mmapped iso buffers in core files
Philippe De Muyter [Thu, 3 Jul 2008 16:52:28 +0000 (18:52 +0200)]
Currently, core files do not contain the mmapped memory of the video1394
or dv1394 devices, 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@macqel.be>

Also affects users of the rawiso ioctl API of raw1394.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/dma.c

index 73685e7..1aba8c1 100644 (file)
@@ -274,7 +274,7 @@ int dma_region_mmap(struct dma_region *dma, struct file *file,
        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;
 }