[PATCH RFC 3/7] selftests/sched: Integrate SCHED_DEADLINE tests into kselftest framework

[Juri Lelli]

Integrate the SCHED_DEADLINE test suite with the kselftest framework
by adding it to the parent sched/Makefile. This allows the tests to be
run via the standard kselftest mechanisms alongside other scheduler
tests.

The integration adds deadline/runner to TEST_PROGS for automatic
execution during test runs, and deadline/cpuhog to
TEST_GEN_PROGS_EXTENDED as a helper program that should be built but
not executed directly. Build rules recursively build the deadline/
subdirectory tests when the sched test suite is built.

The tests can now be run using standard kselftest invocations such as
'make -C tools/testing/selftests TARGETS=sched run_tests' or 'make -C
tools/testing/selftests/sched run_tests'. The deadline/runner will be
executed as part of the sched test suite, providing structured output
that integrates with the kselftest reporting infrastructure.

Assisted-by: Claude Code: claude-sonnet-4-5@20250929
Signed-off-by: Juri Lelli <juri.lelli@xxxxxxxxxx>
---
 tools/testing/selftests/sched/Makefile | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/sched/Makefile b/tools/testing/selftests/sched/Makefile
index 099ee9213557a..8ee7620cc214c 100644
--- a/tools/testing/selftests/sched/Makefile
+++ b/tools/testing/selftests/sched/Makefile
@@ -11,4 +11,12 @@ LDLIBS += -lpthread
 TEST_GEN_FILES := cs_prctl_test
 TEST_PROGS := cs_prctl_test
 
+# SCHED_DEADLINE tests in subdirectory
+TEST_PROGS += deadline/runner
+TEST_GEN_PROGS_EXTENDED := deadline/cpuhog
+
 include ../lib.mk
+
+# Build deadline tests
+$(OUTPUT)/deadline/runner $(OUTPUT)/deadline/cpuhog:
+	$(MAKE) -C deadline OUTPUT=$(OUTPUT)/deadline/

-- 
2.53.0