linux-kernel - Re: [PATCH v2 6/6] selftests: livepatch: Test livepatching function using an external symbol

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Date: Wed, 22 May 2024 13:44:29 +0200
From: Petr Mladek <pmladek@...e.com>
To: Lukas Hruska <lhruska@...e.cz>
Cc: mbenes@...e.cz, jpoimboe@...nel.org, joe.lawrence@...hat.com,
	live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-kbuild@...r.kernel.org, mpdesouza@...e.com
Subject: Re: [PATCH v2 6/6] selftests: livepatch: Test livepatching function
 using an external symbol

On Thu 2024-05-16 15:30:09, Lukas Hruska wrote:
> The test proves that klp-convert works as intended and it is possible to
> livepatch a function that use an external symbol.
> 
> Signed-off-by: Lukas Hruska <lhruska@...e.cz>

> --- a/tools/testing/selftests/livepatch/functions.sh
> +++ b/tools/testing/selftests/livepatch/functions.sh
> @@ -7,6 +7,7 @@
>  MAX_RETRIES=600
>  RETRY_INTERVAL=".1"	# seconds
>  KLP_SYSFS_DIR="/sys/kernel/livepatch"
> +MODULE_SYSFS_DIR="/sys/module"
>  
>  # Kselftest framework requirement - SKIP code is 4
>  ksft_skip=4
> @@ -299,7 +300,7 @@ function check_result {
>  	result=$(dmesg | awk -v last_dmesg="$LAST_DMESG" 'p; $0 == last_dmesg { p=1 }' | \
>  		 grep -e 'livepatch:' -e 'test_klp' | \
>  		 grep -v '\(tainting\|taints\) kernel' | \
> -		 sed 's/^\[[ 0-9.]*\] //')
> +		 sed 's/^\[[ 0-9.]*\] //' | sed 's/^test_klp_log: //')

The prefix "test_klp_log:" is not used anywhere. It seems that this
change is not needed in the final version.

>  
>  	if [[ "$expect" == "$result" ]] ; then
>  		echo "ok"

Otherwise, it looks and works nice. With the hunk removed:

Reviewed-by: Petr Mladek <pmladek@...e.com>
Tested-by: Petr Mladek <pmladek@...e.com>

Best Regards,
Petr