On 2018年09月06日 00:47, Shuah Khan wrote:

On 09/04/2018 08:20 PM, Lei Yang wrote:

...

It uses modprobe $TEST_DRIVER in sysctl.sh, so update config to use "m" instead

Signed-off-by: Lei Yang Lei.Yang@windriver.com

tools/testing/selftests/sysctl/config | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/sysctl/config b/tools/testing/selftests/sysctl/config index 6ca1480..fc263ef 100644 --- a/tools/testing/selftests/sysctl/config +++ b/tools/testing/selftests/sysctl/config @@ -1 +1 @@ -CONFIG_TEST_SYSCTL=y +CONFIG_TEST_SYSCTL=m

What happens if it is a built-in? Can you elaborate in the changelog

On that note we might have other cases that do modprobe in scripts and run into the same issue you are trying to solve. :)

I double-checked again, found that it doesn't work on either with built-in or kernel module if it's built-in, modprobe test_sysctl still return 0, so it doesn't matter it's a built-in or module.

but the problem is that test_modprobe check module load before modprobe execute , I'll sent a V2 patch to fix this and keep its build-in config untouched

if changes nothing

1) when CONFIG_TEST_SYSCTL=y root@intel-x86-64:/tmp/sysctl# ./sysctl.sh Checking production write strict setting ... ok ./sysctl.sh: /sys/module/test_sysctl/ not present You must have the following enabled in your kernel: CONFIG_TEST_SYSCTL=y root@intel-x86-64:/tmp/sysctl# zcat /proc/config.gz |grep TEST_SYS CONFIG_TEST_SYSCTL=y

2) when CONFIG_TEST_SYSCTL=m root@intel-x86-64:/tmp/sysctl# ./sysctl.sh Checking production write strict setting ... ok ./sysctl.sh: /sys/module/test_sysctl/ not present You must have the following enabled in your kernel: CONFIG_TEST_SYSCTL=y root@intel-x86-64:/tmp/sysctl# zcat /proc/config.gz |grep TEST_SYS CONFIG_TEST_SYSCTL=m

Lei

thanks,

-- Shuah