blkparse: Initialize and test for undefined request tracking timestamps
Currently, event tracking timestamps aren't initialized at all even though some
places in the code assume that a value of 0 indicates 'undefined'. However, 0
is the timestamp of the first event, so use -1ULL for 'undefined' instead.
In addition, make sure timestamps are only initialized once, and always check
if timestamps are defined before using them.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 file changed
