tree 4d0812a3b897bc9f1ad1ca45bd156141b5c8b946
parent 8d1547e08dda8848f01185b3fd6bb946b68de99f
author Shaohua Li <shli@fb.com> 1462839735 -0700
committer Jens Axboe <axboe@fb.com> 1462891297 -0600

blk-throttle: don't parse cgroup path if trace isn't enabled

if trace isn't enabled, parsing cgroup path just wastes cpu

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>