linux-kernel - Re: [PATCH rcu v2 0/7] RCU-related lockdep changes for v6.4

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Date:   Mon, 27 Mar 2023 17:14:58 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     rcu@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will@...nel.org>,
        Waiman Long <longman@...hat.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        Frederic Weisbecker <frederic@...nel.org>,
        Neeraj Upadhyay <quic_neeraju@...cinc.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Shuah Khan <shuah@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        seanjc@...gle.com, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH rcu v2 0/7] RCU-related lockdep changes for v6.4

On Wed, Mar 22, 2023 at 09:26:07PM -0700, Boqun Feng wrote:
> Boqun Feng (4):
>   locking/lockdep: Introduce lock_sync()
>   rcu: Annotate SRCU's update-side lockdep dependencies
>   locking: Reduce the number of locks in ww_mutex stress tests
>   locking/lockdep: Improve the deadlock scenario print for sync and read
>     lock
> 
> Paul E. McKenney (3):
>   rcutorture: Add SRCU deadlock scenarios
>   rcutorture: Add RCU Tasks Trace and SRCU deadlock scenarios
>   rcutorture: Add srcu_lockdep.sh
> 
>  include/linux/lockdep.h                       |   8 +-
>  include/linux/srcu.h                          |  34 +++-
>  kernel/locking/lockdep.c                      |  64 +++++-
>  kernel/locking/test-ww_mutex.c                |   2 +-
>  kernel/rcu/rcutorture.c                       | 185 ++++++++++++++++++
>  kernel/rcu/srcutiny.c                         |   2 +
>  kernel/rcu/srcutree.c                         |   2 +
>  .../selftests/rcutorture/bin/srcu_lockdep.sh  |  78 ++++++++
>  8 files changed, 364 insertions(+), 11 deletions(-)
>  create mode 100755 tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>