kernel/linux.git/tools/testing/selftests/sched_ext/runner.c, branch v7.1

selftests/sched_ext: Improve runner error reporting for invalid arguments

2026-04-09T01:20:44+00:00

Report an error for './runner foo' (positional arg instead of -t) and for './runner -t foo' when the filter matches no tests. Previously both cases produced no error output. Pre-scan the test list before the main loop so the error is reported immediately, avoiding spurious SKIP output from '-s' when no tests match. Signed-off-by: Cheng-Yang Chou Signed-off-by: Tejun Heo

selftests/sched_ext: Skip rt_stall on older kernels and list skipped tests

2026-03-24T20:33:25+00:00

rt_stall tests the ext DL server which was introduced in commit cd959a356205 ("sched_ext: Add a DL server for sched_ext tasks"). On older kernels that lack this feature, the test calls ksft_exit_fail() internally which terminates the entire runner process, preventing subsequent tests from running. Add a guard in setup() that checks for the ext_server field in struct rq via __COMPAT_struct_has_field() and returns SCX_TEST_SKIP if not present. Also print the names of skipped tests in the results summary, mirroring the existing behavior for failed tests. Signed-off-by: Cheng-Yang Chou Signed-off-by: Tejun Heo

selftests/sched_ext: Return non-zero exit code on test failure

2026-03-21T18:35:51+00:00

runner.c always returned 0 regardless of test results. The kselftest framework (tools/testing/selftests/kselftest/runner.sh) invokes the runner binary and treats a non-zero exit code as a test failure; with the old code, failed sched_ext tests were silently hidden from the parent harness even though individual "not ok" TAP lines were emitted. Return 1 when at least one test failed, 0 when all tests passed or were skipped. Signed-off-by: zhidao su Acked-by: Andrea Righi Signed-off-by: Tejun Heo

selftests/sched_ext: Show failed test names in summary

2026-03-17T17:46:57+00:00

When tests fail, the runner only printed the failure count, making it hard to tell which tests failed without scrolling through output. Track failed test names in an array and print them after the summary so failures are immediately visible at the end of the run. Signed-off-by: Cheng-Yang Chou Signed-off-by: Tejun Heo

sched_ext: Fix incomplete help text usage strings

2026-03-11T21:02:57+00:00

Several demo schedulers and the selftest runner had usage strings that omitted options which are actually supported: - scx_central: add missing [-v] - scx_pair: add missing [-v] - scx_qmap: add missing [-S] and [-H] - scx_userland: add missing [-v] - scx_sdt: remove [-f] which no longer exists - runner.c: add missing [-s], [-l], [-q]; drop [-h] which none of the other sched_ext tools list in their usage lines Suggested-by: Tejun Heo Signed-off-by: Cheng-Yang Chou Signed-off-by: Tejun Heo

selftests/sched_ext: Abort test loop on signal

2026-02-23T17:19:13+00:00

The runner sets exit_req on SIGINT/SIGTERM but ignores it during the main loop. This prevents users from cleanly interrupting a test run. Check exit_req each iteration to safely break out on exit signals. Signed-off-by: Cheng-Yang Chou Acked-by: Andrea Righi Signed-off-by: Tejun Heo

selftests/sched_ext: flush stdout before test to avoid log spam

2025-12-12T18:18:32+00:00

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 Signed-off-by: Emil Tsalapatis Signed-off-by: Tejun Heo

sched_ext: Add option -l in selftest runner to list all available tests

2025-01-07T19:42:30+00:00

The selftest runner currently allows selecting tests via the -t option. This patch adds a new -l option that lists all available tests, providing users with an overview of the tests they can choose from. This enhancement is especially useful for scripting and automation purposes, making it easier to discover and run tests. Signed-off-by: Shizhao Chen Signed-off-by: Tejun Heo

sched_ext: Add selftests

2024-06-18T20:09:21+00:00

Add basic selftests. Signed-off-by: David Vernet Acked-by: Tejun Heo