linux-kernel - [PATCH 0/3] srcu: Fix boot stall

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Message-Id: <20210401234704.125498-1-frederic@kernel.org>
Date:   Fri,  2 Apr 2021 01:47:01 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     "Paul E . McKenney" <paulmck@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        Uladzislau Rezki <urezki@...il.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Neeraj Upadhyay <neeraju@...eaurora.org>,
        Josh Triplett <josh@...htriplett.org>,
        Joel Fernandes <joel@...lfernandes.org>
Subject: [PATCH 0/3] srcu: Fix boot stall

This is a fix for a boot stall that can be reproduced with
"rcupdate.rcu_self_test=1" and CONFIG_PROVE_RCU=y.

It should be easy to trigger if you set CONFIG_MAXSMP=y and you don't
actually have thousands of CPUs.

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
	rcu/dev

HEAD: 6390b2aa1295f79150fac8f5ff60177eea5d8f8b

Thanks,
	Frederic
---

Frederic Weisbecker (3):
      srcu: Remove superfluous ssp initialization on deferred work queue
      srcu: Remove superfluous sdp->srcu_lock_count zero filling
      srcu: Fix broken node geometry after early ssp init


 include/linux/srcutree.h |  1 +
 kernel/rcu/srcutree.c    | 81 +++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 64 insertions(+), 18 deletions(-)