From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>, Tim Deegan <tim@xen.org>,
Stefano Stabellini <sstabellini@kernel.org>, Wei Liu <wl@xen.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
George Dunlap <George.Dunlap@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Dario Faggioli <dfaggioli@suse.com>,
Julien Grall <julien.grall@arm.com>,
Jan Beulich <jbeulich@suse.com>
Subject: [Xen-devel] [PATCH v3 0/4] xen/sched: use new idle scheduler for free cpus
Date: Mon, 9 Sep 2019 11:33:35 +0200 [thread overview]
Message-ID: <20190909093339.7134-1-jgross@suse.com> (raw)
These three patches have been carved out from my core scheduling series
as they are sufficiently independent to be applied even without the big
series.
Without this little series there are messages like the following to be
seen on the console when booting with smt=0:
(XEN) Adding cpu 1 to runqueue 0
(XEN) CPU 1 still not dead...
(XEN) CPU 1 still not dead...
(XEN) CPU 1 still not dead...
(XEN) CPU 1 still not dead...
By assigning cpus to Cpupool-0 only after all cpus are up and by not
using the more complicated credit2 scheduler for cpus not in any
cpupool this situation can simply no longer happen, as parking the not
to be started threads is done before.
Changes in V3:
- use ZERO_BLOCK_PTR (Patch 3)
- add patch 4
Changes in V2:
- commit messages updated
- renamed functions (Patch 2)
Juergen Gross (4):
xen/sched: populate cpupool0 only after all cpus are up
xen/sched: remove cpu from pool0 before removing it
xen/sched: add minimalistic idle scheduler for free cpus
xen/sched: switch to debugtrace in cpupool handling
xen/common/cpupool.c | 228 +++++++++++++++++++++++++++------------------
xen/common/sched_credit.c | 9 --
xen/common/sched_null.c | 7 --
xen/common/schedule.c | 172 +++++++++++++++++-----------------
xen/include/xen/sched-if.h | 2 +
5 files changed, 229 insertions(+), 189 deletions(-)
--
2.16.4
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next reply other threads:[~2019-09-09 9:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-09 9:33 Juergen Gross [this message]
2019-09-09 9:33 ` [Xen-devel] [PATCH v3 1/4] xen/sched: populate cpupool0 only after all cpus are up Juergen Gross
2019-09-13 16:54 ` Dario Faggioli
2019-09-09 9:33 ` [Xen-devel] [PATCH v3 2/4] xen/sched: remove cpu from pool0 before removing it Juergen Gross
2019-09-13 17:27 ` Dario Faggioli
2019-09-14 5:04 ` Juergen Gross
2019-09-09 9:33 ` [Xen-devel] [PATCH v3 3/4] xen/sched: add minimalistic idle scheduler for free cpus Juergen Gross
2019-09-09 9:33 ` [Xen-devel] [PATCH v3 4/4] xen/sched: switch to debugtrace in cpupool handling Juergen Gross
2019-09-12 8:24 ` Dario Faggioli
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