linux-kernel - Re: [PATCH v2 1/4] selftests/livepatch: simplify test-klp-callbacks busy target tests

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Message-ID: <alpine.LSU.2.21.2006051505230.23532@pobox.suse.cz>
Date:   Fri, 5 Jun 2020 15:05:55 +0200 (CEST)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Yannick Cote <ycote@...hat.com>
cc:     live-patching@...r.kernel.org, linux-kselftest@...r.kernel.org,
        joe.lawrence@...hat.com, linux-kernel@...r.kernel.org,
        pmladek@...e.com, kamalesh@...ux.vnet.ibm.com
Subject: Re: [PATCH v2 1/4] selftests/livepatch: simplify test-klp-callbacks
 busy target tests

On Wed, 3 Jun 2020, Yannick Cote wrote:

> From: Joe Lawrence <joe.lawrence@...hat.com>
> 
> The test-klp-callbacks script includes a few tests which rely on kernel
> task timings that may not always execute as expected under system load.
> These may generate out of sequence kernel log messages that result in
> test failure.
> 
> Instead of using sleep timing windows to orchestrate these tests, add a
> block_transition module parameter to communicate the test purpose and
> utilize flush_queue() to serialize the test module's task output.
> 
> Suggested-by: Petr Mladek <pmladek@...e.com>
> Signed-off-by: Joe Lawrence <joe.lawrence@...hat.com>

Acked-by: Miroslav Benes <mbenes@...e.cz>

M