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References: <20220309014705.1265861-1-liupeng256@huawei.com> <20220309014705.1265861-3-liupeng256@huawei.com>
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From:   Marco Elver <elver@google.com>
Date:   Wed, 9 Mar 2022 07:03:13 +0100
Message-ID: <CANpmjNOU+M1ZaRTMPMCFE7pm8JXLKsWcMpMAsDmJXZUga3N7=A@mail.gmail.com>
Subject: Re: [PATCH 2/3] kunit: make kunit_test_timeout compatible with comment
To:     Peng Liu <liupeng256@huawei.com>
Cc:     brendanhiggins@google.com, glider@google.com, dvyukov@google.com,
        akpm@linux-foundation.org, linux-kselftest@vger.kernel.org,
        kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org,
        kasan-dev@googlegroups.com, linux-mm@kvack.org,
        wangkefeng.wang@huawei.com
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On Wed, 9 Mar 2022 at 02:29, 'Peng Liu' via kasan-dev
<kasan-dev@googlegroups.com> wrote:
>
> In function kunit_test_timeout, it is declared "300 * MSEC_PER_SEC"
> represent 5min. However, it is wrong when dealing with arm64 whose
> default HZ = 250, or some other situations. Use msecs_to_jiffies to
> fix this, and kunit_test_timeout will work as desired.
>
> Signed-off-by: Peng Liu <liupeng256@huawei.com>

Does this need a:

Fixes: 5f3e06208920 ("kunit: test: add support for test abort")

?

> ---
>  lib/kunit/try-catch.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/kunit/try-catch.c b/lib/kunit/try-catch.c
> index 6b3d4db94077..f7825991d576 100644
> --- a/lib/kunit/try-catch.c
> +++ b/lib/kunit/try-catch.c
> @@ -52,7 +52,7 @@ static unsigned long kunit_test_timeout(void)
>          * If tests timeout due to exceeding sysctl_hung_task_timeout_secs,
>          * the task will be killed and an oops generated.
>          */
> -       return 300 * MSEC_PER_SEC; /* 5 min */
> +       return 300 * msecs_to_jiffies(MSEC_PER_SEC); /* 5 min */

Why not just "300 * HZ" ?

>  }
>
>  void kunit_try_catch_run(struct kunit_try_catch *try_catch, void *context)
> --
> 2.18.0.huawei.25
>
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