From: Prateek Sood <prsood@codeaurora.org>
To: peterz@infradead.org, longman@redhat.com, tj@kernel.org,
lizefan@huawei.com, mingo@kernel.org, boqun.feng@gmail.com,
tglx@linutronix.de
Cc: cgroups@vger.kernel.org, sramana@codeaurora.org,
linux-kernel@vger.kernel.org, clingutla@codeaurora.org,
prsood@codeaurora.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@hirez.programming.kicks-ass.net>
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: 21+ 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
2017-09-07 17:51 ` Peter Zijlstra
2017-10-09 13:27 ` Prateek Sood
2017-10-11 9:48 ` Peter Zijlstra
2017-10-25 8:39 ` Prateek Sood
2017-10-25 9:30 ` Peter Zijlstra
2017-10-26 11:52 ` Prateek Sood
2017-10-26 14:05 ` Waiman Long
2017-10-27 8:03 ` Prateek Sood
2017-10-30 7:16 ` [PATCH v2] " Prateek Sood
2017-11-06 4:01 ` Prateek Sood
2017-11-15 10:26 ` Prateek Sood
2017-11-15 10:37 ` Peter Zijlstra
2017-11-15 14:20 ` Prateek Sood [this message]
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
2017-11-15 17:18 ` Prateek Sood
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