linux-kernel - [RFC lockdep 0/4] Fixes and self testcases for wait context detection

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Message-Id: <20201208103112.2838119-1-boqun.feng@gmail.com>
Date:   Tue,  8 Dec 2020 18:31:08 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     linux-kernel@...r.kernel.org, rcu@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Uladzislau Rezki <urezki@...il.com>,
        Boqun Feng <boqun.feng@...il.com>
Subject: [RFC lockdep 0/4] Fixes and self testcases for wait context detection

Hi Peter,

Recently I looked into the wait context check feature and found some
places could use fixes, besides a suite of test cases is also added to
verify these fixes and future development.

Note: I'm not 100% sure all the expected results of the test cases are
correct, please do have a look at the the comment of patch #4 in case I
miss something subtle.

Suggestion and comments are welcome!

Regards,
Boqun


Boqun Feng (4):
  lockdep/selftest: Make HARDIRQ context threaded
  lockdep: Allow wait context checking with empty ->held_locks
  rcu/lockdep: Annotate the rcu_callback_map with proper wait contexts
  lockdep/selftest: Add wait context selftests

 kernel/locking/lockdep.c |   6 +-
 kernel/rcu/update.c      |   8 +-
 lib/locking-selftest.c   | 233 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 244 insertions(+), 3 deletions(-)

-- 
2.29.2