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| /qemu/block/ |
| H A D | nvme.c | 2446e0e2 Wed Jun 17 13:21:55 GMT 2020 Stefan Hajnoczi <stefanha@redhat.com> block/nvme: poll queues without q->lock
A lot of CPU time is spent simply locking/unlocking q->lock during
polling. Check for completion outside the lock to make q->lock disappear
from the profile.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Message-id: 20200617132201.1832152-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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