From: Dario Faggioli <dario.faggioli@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>,
Justin Weaver <jtweaver@hawaii.edu>,
George Dunlap <dunlapg@umich.edu>,
Tianyang Chen <tiche@seas.upenn.edu>,
Robert VanVossen <robert.vanvossen@dornerworks.com>,
Uma Sharma <uma.sharma523@gmail.com>,
Josh Whitehead <josh.whitehead@dornerworks.com>,
Meng Xu <mengxu@cis.upenn.edu>, Jan Beulich <JBeulich@suse.com>
Subject: [PATCH 00/16] Fixes and improvement (including hard affinity!) for Credit2
Date: Fri, 18 Mar 2016 20:03:52 +0100 [thread overview]
Message-ID: <20160318185524.8117.74837.stgit@Solace.station> (raw)
Hi everyone,
This series implements a bunch of both bugfixes and improvements for scheduling
in general, but mostly for Credit2.
Almost all the patches have actually been posted already (so that's why some of
them have a mention of what changed since v1), but I felt like the best thing
was just to put together a new series containing them all (and hence I'm
considering this here to be version 1 of it).
So, quickly, what we do is:
a) fix a potential race and an actual ASSERT(), when moving pCPUs around
cpupools;
b) fix how Credit2 constructs its runqueue;
c) implement hard affinity in Credit2;
d) a couple more (minor) fixes and improvements.
In particular, to make a) possible, quite a few restructuring of the way in
which we deal with pCPUs changing scheduler when they move between pools
(basically, in schedule_cpu_switch()) has been necessary.
That also helped making b) possible, so it was a win-win. :-)
And finally, yes, I know it's late in this release cycle, but still would like
to give this series a chance to get in Xen 4.7. (BTW, technically, it's really
mostly bugfixing, the only exception being hard affinity for Credit2).
Thanks and Regards,
Dario
---
Dario Faggioli (14):
xen: sched: fix locking when allocating an RTDS pCPU
xen: sched: add .init_pdata hook to the scheduler interface
xen: sched: make implementing .alloc_pdata optional
xen: sched: implement .init_pdata in all schedulers
xen: sched: move pCPU initialization in an helper
xen: sched: prepare a .switch_sched hook for Credit1
xen: sched: prepare a .switch_sched hook for Credit2
xen: sched: prepare a .switch_sched hook for Credit2
xen: sched: close potential races when switching scheduler to CPUs
xen: sched: on Credit2, don't reprogram the timer if idle
xen: sched: fix per-socket runqueue creation in credit2
xen: sched: allow for choosing credit2 runqueues configuration at boot
xen: sched: per-core runqueues as default in credit2
xen: sched: scratch space for cpumasks on Credit2
Justin Weaver (1):
xen: sched: implement vcpu hard affinity in Credit2
Uma Sharma (1):
xen: sched: improve credit2 bootparams' scope, placement and signedness
docs/misc/xen-command-line.markdown | 19 +
xen/common/sched_arinc653.c | 31 --
xen/common/sched_credit.c | 75 +++++-
xen/common/sched_credit2.c | 467 +++++++++++++++++++++++++----------
xen/common/sched_rt.c | 69 ++++-
xen/common/schedule.c | 53 +++-
xen/include/xen/sched-if.h | 5
7 files changed, 505 insertions(+), 214 deletions(-)
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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next reply other threads:[~2016-03-18 19:03 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-18 19:03 Dario Faggioli [this message]
2016-03-18 19:04 ` [PATCH 01/16] xen: sched: fix locking when allocating an RTDS pCPU Dario Faggioli
2016-03-19 2:22 ` Meng Xu
2016-03-23 15:37 ` George Dunlap
2016-03-18 19:04 ` [PATCH 02/16] xen: sched: add .init_pdata hook to the scheduler interface Dario Faggioli
2016-03-22 8:08 ` Juergen Gross
2016-03-23 17:32 ` George Dunlap
2016-03-18 19:04 ` [PATCH 03/16] xen: sched: make implementing .alloc_pdata optional Dario Faggioli
2016-03-19 2:23 ` Meng Xu
2016-03-21 14:22 ` Jan Beulich
2016-03-23 17:36 ` George Dunlap
2016-03-24 9:43 ` Jan Beulich
2016-03-24 13:14 ` Dario Faggioli
2016-03-21 14:48 ` Juergen Gross
2016-03-21 15:07 ` Jan Beulich
2016-04-01 17:01 ` Dario Faggioli
2016-04-04 4:21 ` Juergen Gross
2016-04-04 6:13 ` Jan Beulich
2016-04-05 16:01 ` Dario Faggioli
2016-03-23 17:38 ` George Dunlap
2016-03-18 19:04 ` [PATCH 04/16] xen: sched: implement .init_pdata in all schedulers Dario Faggioli
2016-03-19 2:24 ` Meng Xu
2016-03-22 8:03 ` Juergen Gross
2016-03-23 17:46 ` George Dunlap
2016-03-18 19:04 ` [PATCH 05/16] xen: sched: move pCPU initialization in an helper Dario Faggioli
2016-03-23 17:51 ` George Dunlap
2016-03-23 18:09 ` George Dunlap
2016-03-24 13:21 ` Dario Faggioli
2016-03-18 19:04 ` [PATCH 06/16] xen: sched: prepare a .switch_sched hook for Credit1 Dario Faggioli
2016-03-18 19:04 ` [PATCH 07/16] xen: sched: prepare a .switch_sched hook for Credit2 Dario Faggioli
2016-03-18 19:04 ` [PATCH 08/16] " Dario Faggioli
2016-03-19 2:24 ` Meng Xu
2016-03-21 14:25 ` Jan Beulich
2016-03-18 19:05 ` [PATCH 09/16] xen: sched: close potential races when switching scheduler to CPUs Dario Faggioli
2016-03-19 2:25 ` Meng Xu
2016-03-23 19:05 ` George Dunlap
2016-04-05 16:26 ` Dario Faggioli
2016-04-06 15:51 ` Dario Faggioli
2016-03-24 12:14 ` George Dunlap
2016-04-05 17:37 ` Dario Faggioli
2016-04-06 16:21 ` Dario Faggioli
2016-03-18 19:05 ` [PATCH 10/16] xen: sched: improve credit2 bootparams' scope, placement and signedness Dario Faggioli
2016-03-21 14:51 ` Juergen Gross
2016-03-24 12:20 ` George Dunlap
2016-03-18 19:05 ` [PATCH 11/16] xen: sched: on Credit2, don't reprogram the timer if idle Dario Faggioli
2016-03-24 15:03 ` George Dunlap
2016-03-18 19:05 ` [PATCH 12/16] xen: sched: fix per-socket runqueue creation in credit2 Dario Faggioli
2016-03-24 12:24 ` George Dunlap
2016-03-18 19:05 ` [PATCH 13/16] xen: sched: allow for choosing credit2 runqueues configuration at boot Dario Faggioli
2016-03-22 7:46 ` Juergen Gross
2016-03-24 12:36 ` George Dunlap
2016-03-18 19:05 ` [PATCH 14/16] xen: sched: per-core runqueues as default in credit2 Dario Faggioli
2016-03-24 12:37 ` George Dunlap
2016-03-18 19:06 ` [PATCH 15/16] xen: sched: scratch space for cpumasks on Credit2 Dario Faggioli
2016-03-18 19:27 ` Andrew Cooper
2016-03-24 12:44 ` George Dunlap
2016-03-24 12:56 ` Andrew Cooper
2016-03-24 13:10 ` Dario Faggioli
2016-03-18 19:06 ` [PATCH 16/16] xen: sched: implement vcpu hard affinity in Credit2 Dario Faggioli
2016-03-24 15:42 ` George Dunlap
2016-04-05 16:50 ` Dario Faggioli
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