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(parent: 2149da0) | patch
blk-mq: don't call ktime_get_ns() if we don't need it
authorJens Axboe <axboe@kernel.dk>
Wed, 28 Nov 2018 17:50:07 +0000 (10:50 -0700)
committerJens Axboe <axboe@kernel.dk>
Mon, 3 Dec 2018 21:59:16 +0000 (14:59 -0700)
commitfe1f452640d888c4311ef35c8ee497f47c3ea17c
tree9ec97a247b0e748995fafa1ed4725b16f4408613tree | snapshot
parent2149da0748fc236b9916c53e26b3b0c9ab20a5ddcommit | diff
blk-mq: don't call ktime_get_ns() if we don't need it

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>
block/blk-mq.c diff | blob | history
Domain: System / Kernel;