On Mon, Feb 11, 2019 at 09:45:43AM +0100, Ingo Molnar wrote: > * Mark Brown wrote: > > In preparation for a change to make this test run repeatedly which > > would generate huge amounts of output as is indirect all the printf() > > calls in the program through a wrapper and add a quiet flag which can > > be used to suppress the output. This is fairly quick and dirty, I'm not > > 100% sure what would be idiomatic here. > So this really loses useful output when there is a failure. After this > patch I get: > dagon:~/tip/tools/testing/selftests/x86> ./fsgsbase_64 -vv > [FAIL] 24 errors detected in 1 tries > Not very helpful, and no real command-line way to see the failures. For clarity it's the second patch that breaks this, though you're right this isn't helpful and this patch needs a log level adding to really fix that.