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579a3297b2
The sched_ext selftests runner runs each test in the same process, with each test possibly forking multiple times. When the main runner has not flushed its stdout, the children inherit the buffered output for previous tests and emit it during exit. This causes log spam. Make sure stdout/stderr is fully flushed before each test. Cc: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org>