From: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Mike Marciniszyn
<mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: [PATCH 10/15] IB/rdmavt: Increase CQ callback thread priority
Date: Thu, 12 May 2016 10:23:28 -0700 [thread overview]
Message-ID: <20160512172327.9741.22252.stgit@scvm10.sc.intel.com> (raw)
In-Reply-To: <20160512172050.9741.84190.stgit-9QXIwq+3FY+1XWohqUldA0EOCMrvLtNR@public.gmane.org>
From: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
The priority of the send engines is higher than the CQ completion
thread potentially causing completions to be starved for very
fast interfaces.
Change the CQ kthread to match the send engine threads to minimize
this delay for ULP completion processing.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
drivers/infiniband/sw/rdmavt/cq.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/sw/rdmavt/cq.c b/drivers/infiniband/sw/rdmavt/cq.c
index b1ffc8b..6ca6fa8 100644
--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -525,6 +525,7 @@ int rvt_driver_cq_init(struct rvt_dev_info *rdi)
return PTR_ERR(task);
}
+ set_user_nice(task, MIN_NICE);
cpu = cpumask_first(cpumask_of_node(rdi->dparms.node));
kthread_bind(task, cpu);
wake_up_process(task);
--
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next prev parent reply other threads:[~2016-05-12 17:23 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-12 17:22 [PATCH 00/15] IB/hfi1, rdmavt, core: Misc fixes and improvements for 4.7 Dennis Dalessandro
[not found] ` <20160512172050.9741.84190.stgit-9QXIwq+3FY+1XWohqUldA0EOCMrvLtNR@public.gmane.org>
2016-05-12 17:22 ` [PATCH 01/15] IB/hfi1: Ignore non-temperature warnings on a downed link Dennis Dalessandro
2016-05-12 17:22 ` [PATCH 02/15] IB/hfi1: Wait for QSFP modules to initialize Dennis Dalessandro
2016-05-12 17:22 ` [PATCH 03/15] IB/hfi1: Correct external device configuration shift Dennis Dalessandro
2016-05-12 17:22 ` [PATCH 04/15] IB/hfi1: Remove no-op QSFP reset code Dennis Dalessandro
2016-05-12 17:22 ` [PATCH 05/15] IB/hfi1: Fix pio wait counter double increment Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 06/15] IB/hfi1: Fix potential panic with sdma drained mechanism Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 07/15] IB/hfi1: Improve performance of interval RB trees Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 08/15] IB/hfi1: Remove unnecessary header Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 09/15] IB/hfi1: Fix hfi_rcvhdr tracepoint Dennis Dalessandro
2016-05-12 17:23 ` Dennis Dalessandro [this message]
2016-05-12 17:23 ` [PATCH 11/15] IB/hfi1: Correct log message strings Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 12/15] IB/hfi1: Immediately apply congestion setting MAD Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 13/15] IB/hfi1: Keep SC_USER as the last send context type Dennis Dalessandro
2016-05-12 17:23 ` [PATCH 14/15] ib_pack.h: Add opcode definition for send with invalidate Dennis Dalessandro
2016-05-12 17:24 ` [PATCH 15/15] IB/hfi1: Change hfi1_init loop to preserve error returns Dennis Dalessandro
2016-05-12 18:53 ` [PATCH 00/15] IB/hfi1, rdmavt, core: Misc fixes and improvements for 4.7 Doug Ledford
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