linux-kernel - Re: [RFC lockdep 4/4] lockdep/selftest: Add wait context selftests

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Date:   Tue, 8 Dec 2020 15:33:24 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Boqun Feng <boqun.feng@...il.com>
Cc:     linux-kernel@...r.kernel.org, rcu@...r.kernel.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>
Subject: Re: [RFC lockdep 4/4] lockdep/selftest: Add wait context selftests

On Tue, Dec 08, 2020 at 06:31:12PM +0800, Boqun Feng wrote:
> These tests are added for two purposes:
> 
> *	Test the implementation of wait context checks and related
> 	annotations.
> 
> *	Semi-document the rules for wait context nesting when
> 	PROVE_RAW_LOCK_NESTING=y.

Documentation/locking/locktypes.rst should have that.

> The test cases are only avaible for PROVE_RAW_LOCK_NESTING=y, as wait
> context checking makes more sense for that configuration.

Looks about right ;-)