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Chris Hyser > Cc: linux-kselftest@vger.kernel.org; linux-kernel@vger.kernel.org; shuah@kernel.org > Subject: Re: [PATCH] selftests: sched: add sched as a default selftest target > >> On 20-02-2025 01:15 pm, Shrikanth Hegde wrote: >> >>> If CONFIG_SCHED_CORE=n, the test fails. So you might end up seeing >>> default selftests failing on such systems? or this is only compiling?> >> >> Yes, this patch would enable the test to be compiled and run by default. >> >>> Likely the selftests/sched needs to modified for CONFIG_SCHED_CORE=n >> >> Agree. Chris, I suppose then a graceful skip would be a more right >> option for kernels with core scheduling disabled? > > By graceful skip, do you mean a 0 return code and not printing failure? I confess, > I originally wrote the test as stand-alone for me to get the prctl code right and it > got shoved in here. By graceful skip, I meant printing that SCHED_CORE is disabled for the kernel and exiting with a return code 4 on such kernels. This would also make the kselftest framework pick up the skip, say when compiled tests are run through run_kselftest.sh > > I guess my question is what if SCHED_CORE was supposed to be configed into > the test kernel? Silently burying the error might be bad. I'm not strongly tied to > that, just looking for opinions. At the same time, if you put the orig change in, > people w/o SCHED_CORE on will start seeing "failures" they didn't see before, > yes? and that seems bad. Yes, that seems bad as rightly pointed out by Shrikant. I have a patch that does the above mentioned skip, and if skipping is a right option to take here I can send it in the next version. Regards, Shan > > I'm happy to make this better behaved. I'm the reason it is the way it is. > > -chrish > >