linux-kernel - Re: [PATCH] selftests/mm: Fix thuge-gen test name uniqueness

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Message-ID: <2e160343-8420-4f55-86b1-128676cf75d3@arm.com>
Date: Wed, 5 Feb 2025 08:22:04 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: Mark Brown <broonie@...nel.org>, Andrew Morton
 <akpm@...ux-foundation.org>, Shuah Khan <shuah@...nel.org>,
 Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc: linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/mm: Fix thuge-gen test name uniqueness

On 2/5/25 04:23, Mark Brown wrote:
> The thuge-gen test_mmap() and test_shmget() tests are repeatedly run for a
> variety of sizes but always report the result of their test with the same
> name, meaning that automated sysetms running the tests are unable to

s/sysetms/system		^^^^^^

> distinguish between the various tests. Add the supplied sizes to the logged
> test names to distinguish between runs.

This makes sense given that the size parameter is available right away.

> 
> Fixes: b38bd9b2c448 ("selftests/mm: thuge-gen: conform to TAP format output")

Just wondering how this fixes anything ? This seems like an improvement to
the current behaviour.

> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---
>  tools/testing/selftests/mm/thuge-gen.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/mm/thuge-gen.c b/tools/testing/selftests/mm/thuge-gen.c
> index e4370b79b62ffb133056eb843cdd1eaeba6503df..cd5174d735be405220d99ae796a3768f53df6ea4 100644
> --- a/tools/testing/selftests/mm/thuge-gen.c
> +++ b/tools/testing/selftests/mm/thuge-gen.c
> @@ -127,7 +127,7 @@ void test_mmap(unsigned long size, unsigned flags)
>  
>  	show(size);
>  	ksft_test_result(size == getpagesize() || (before - after) == NUM_PAGES,
> -			 "%s mmap\n", __func__);
> +			 "%s mmap %lu\n", __func__, size);
>  
>  	if (munmap(map, size * NUM_PAGES))
>  		ksft_exit_fail_msg("%s: unmap %s\n", __func__, strerror(errno));
> @@ -165,7 +165,7 @@ void test_shmget(unsigned long size, unsigned flags)
>  
>  	show(size);
>  	ksft_test_result(size == getpagesize() || (before - after) == NUM_PAGES,
> -			 "%s: mmap\n", __func__);
> +			 "%s: mmap %lu\n", __func__, size);
>  	if (shmdt(map))
>  		ksft_exit_fail_msg("%s: shmdt: %s\n", __func__, strerror(errno));
>  }
> 

Otherwise LGTM.