blktrace: add support for driver data
Stefan Raspl authored

This patch adds the new api call blk_add_driver_data() to blktrace.
It allows to trace device driver-specific binary data.
Signed-off-by: default avatarStefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Peschke <mp3@de.ibm.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
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