From patchwork Tue Oct 24 21:46:21 2023
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From: Frederic Weisbecker <frederic@kernel.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>,
        Boqun Feng <boqun.feng@gmail.com>,
        Joel Fernandes <joel@joelfernandes.org>,
        Josh Triplett <josh@joshtriplett.org>,
        Lai Jiangshan <jiangshanlai@gmail.com>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Neeraj Upadhyay <neeraj.upadhyay@amd.com>,
        "Paul E . McKenney" <paulmck@kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Uladzislau Rezki <urezki@gmail.com>,
        Zqiang <qiang.zhang1211@gmail.com>, rcu <rcu@vger.kernel.org>,
        "Liam R . Howlett" <Liam.Howlett@oracle.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 0/4] rcu: Fix PF_IDLE related issues v2
Date: Tue, 24 Oct 2023 23:46:21 +0200
Message-ID: <20231024214625.6483-1-frederic@kernel.org>
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The modification of PF_IDLE semantics lately to fix a bug in rcutiny
eventually introduced new bugs in RCU-tasks. In this v2, this series
propose to fix these issues without reverting:

	cff9b2332ab7 ("kernel/sched: Modify initial boot task idle setup")

Frederic Weisbecker (4):
  rcu: Introduce rcu_cpu_online()
  rcu/tasks: Handle new PF_IDLE semantics
  rcu/tasks-trace: Handle new PF_IDLE semantics
  sched: Exclude CPU boot code from PF_IDLE area

 include/linux/sched.h |  2 +-
 kernel/cpu.c          |  4 ++++
 kernel/rcu/rcu.h      |  2 ++
 kernel/rcu/tasks.h    | 33 ++++++++++++++++++++++++++++++---
 kernel/rcu/tree.c     |  7 +++++++
 kernel/sched/idle.c   |  1 -
 6 files changed, 44 insertions(+), 5 deletions(-)