linux-kernel - Re: [PATCH] kunit: added lockdep support

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Date:   Mon, 10 Aug 2020 13:34:05 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     Uriel Guajardo <urielguajardojr@...il.com>
Cc:     Uriel Guajardo <urielguajardo@...gle.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kunit: added lockdep support

On Thu, Aug 6, 2020 at 1:37 PM Uriel Guajardo <urielguajardojr@...il.com> wrote:
>
> From: Uriel Guajardo <urielguajardo@...gle.com>
>
> KUnit tests will now fail if lockdep detects an error during a test
> case.
>
> The idea comes from how lib/locking-selftest [1] checks for lock errors: we
> first if lock debugging is turned on. If not, an error must have
> occurred, so we fail the test and restart lockdep for the next test case.
>
> Like the locking selftests, we also fix possible preemption count
> corruption from lock bugs.
>
> Depends on kunit: support failure from dynamic analysis tools [2]
>
> [1] https://elixir.bootlin.com/linux/v5.7.12/source/lib/locking-selftest.c#L1137
>
> [2] https://lore.kernel.org/linux-kselftest/20200806174326.3577537-1-urielguajardojr@gmail.com/
>
> Signed-off-by: Uriel Guajardo <urielguajardo@...gle.com>

Reviewed-by: Brendan Higgins <brendanhiggins@...gle.com>