From: Prateek Sood <prsood-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
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lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
boqun.feng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org
Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
sramana-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
clingutla-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
prsood-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org
Subject: [PATCH v3 0/2] Invert cpu_hotplug_lock and cpuset_mutex locking order.
Date: Wed, 15 Nov 2017 19:50:13 +0530 [thread overview]
Message-ID: <1510755615-25906-1-git-send-email-prsood@codeaurora.org> (raw)
In-Reply-To: <20171115103742.xt7muaq2dfrs2cyd-Nxj+rRp3nVydTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
This patch does following
1- Remove circular dependency deadlock by inverting order of
cpu_hotplug_lock and cpuset_mutex.
2- Make cpuset_hotplug_workfn() synchronous for cpu hotplug path.
For memory hotplug path it still gets queued as a work item.
Prateek Sood (2):
cgroup/cpuset: remove circular dependency deadlock
cpuset: Make cpuset hotplug synchronous
include/linux/cpuset.h | 6 ----
kernel/cgroup/cpuset.c | 94 +++++++++++++++++++++++++++-----------------------
kernel/power/process.c | 2 --
kernel/sched/core.c | 1 -
4 files changed, 50 insertions(+), 53 deletions(-)
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2017-11-15 14:20 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-07 13:56 [PATCH] cgroup/cpuset: remove circular dependency deadlock Prateek Sood
2017-09-07 17:45 ` Peter Zijlstra
2017-09-08 2:13 ` Prateek Sood
[not found] ` <1504792583-10424-1-git-send-email-prsood-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-09-07 17:51 ` Peter Zijlstra
2017-10-09 13:27 ` Prateek Sood
[not found] ` <4668d1ec-dc43-8a9c-4f94-a421683d3c17-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-10-09 13:32 ` Prateek Sood
2017-10-11 9:48 ` Peter Zijlstra
[not found] ` <20171011094833.pdp4torvotvjdmkt-Nxj+rRp3nVydTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2017-10-25 8:39 ` Prateek Sood
2017-10-25 9:30 ` Peter Zijlstra
[not found] ` <20171025093041.GO3165-IIpfhp3q70x9+YH6RuovlLjjLBE8jN/0@public.gmane.org>
2017-10-26 11:52 ` Prateek Sood
2017-10-26 14:05 ` Waiman Long
[not found] ` <dc80ad9d-5b3d-b991-76c8-35630bc139c5-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-10-27 8:03 ` Prateek Sood
[not found] ` <45cdac2f-4462-e5b5-d724-8cca58e3932a-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-10-30 7:16 ` [PATCH v2] " Prateek Sood
[not found] ` <1509347805-23491-1-git-send-email-prsood-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-06 4:01 ` Prateek Sood
2017-11-15 10:26 ` Prateek Sood
[not found] ` <6f8b194f-05ec-05d4-3df6-e9eadc7f68bf-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-15 10:37 ` Peter Zijlstra
[not found] ` <20171115103742.xt7muaq2dfrs2cyd-Nxj+rRp3nVydTX5a5knrm8zTDFooKrT+cvkQGrU6aU0@public.gmane.org>
2017-11-15 14:20 ` Prateek Sood [this message]
[not found] ` <1510755615-25906-1-git-send-email-prsood-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-15 14:20 ` [PATCH v3 1/2] " Prateek Sood
2017-11-15 14:20 ` [PATCH v3 2/2] cpuset: Make cpuset hotplug synchronous Prateek Sood
2017-11-27 16:48 ` [PATCH v3 0/2] Invert cpu_hotplug_lock and cpuset_mutex locking order Tejun Heo
2017-11-15 17:05 ` [PATCH v2] cgroup/cpuset: remove circular dependency deadlock Tejun Heo
[not found] ` <20171115170524.GU983427-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2017-11-15 17:18 ` Prateek Sood
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