blk-mq: don't call ktime_get_ns() if we don't need it

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We only need the request fields and the end_io time if we have
stats enabled, or if we have a scheduler attached as those may
use it for completion time stats.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jens Axboe 2018-11-28 10:50:07 -07:00

parent 2149da0748

commit fe1f452640

1 changed files with 17 additions and 2 deletions

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block/blk-mq.c

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