Commit e6d2e017 authored Apr 12, 2016 by Jubin John Committed by Doug Ledford Apr 28, 2016

IB/rdmavt: Fix send scheduling

call_send is used to determine whether to send immediately or schedule
a send for later. The current logic in rdmavt is inverted and has a
negative impact on the latency of the hfi1 and qib drivers. Fix this
regression by correctly calling send immediately when call_send is set.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

parent 849e3e93

drivers/infiniband/sw/rdmavt/qp.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -1637,9 +1637,9 @@ int rvt_post_send(struct ib_qp ibqp, struct ib_send_wr wr,
		spin_unlock_irqrestore(&qp->s_hlock, flags);
		if (nreq) {
		if (call_send)
		rdi->driver_f.schedule_send_no_lock(qp);
		else
		rdi->driver_f.do_send(qp);
		else
		rdi->driver_f.schedule_send_no_lock(qp);
		}
		return err;
		}