selftests/powerpc: Convert pmu Makefile to for loop style

The pmu Makefile has grown more sub directories over the years. Rather
than open coding the rules for each subdir, use for loops.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240422133453.1793988-1-mpe@ellerman.id.au

tools/testing/selftests/powerpc/pmu/Makefile

@@ -9,7 +9,9 @@ top_srcdir = ../../../../..
 include ../../lib.mk
 include ../flags.mk
 
-all: $(TEST_GEN_PROGS) ebb sampling_tests event_code_tests
+SUB_DIRS := ebb sampling_tests event_code_tests
+
+all: $(TEST_GEN_PROGS) $(SUB_DIRS)
 
 $(TEST_GEN_PROGS): $(EXTRA_SOURCES)
 
@@ -23,12 +25,16 @@ $(OUTPUT)/count_stcx_fail: loop.S $(EXTRA_SOURCES)
 
 $(OUTPUT)/per_event_excludes: ../utils.c
 
+$(SUB_DIRS):
+	BUILD_TARGET=$(OUTPUT)/$@; mkdir -p $$BUILD_TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -k -C $@ all
+
 DEFAULT_RUN_TESTS := $(RUN_TESTS)
 override define RUN_TESTS
 	$(DEFAULT_RUN_TESTS)
-	+TARGET=ebb; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests
-	+TARGET=sampling_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests
-	+TARGET=event_code_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests
+	+@for TARGET in $(SUB_DIRS); do \
+		BUILD_TARGET=$(OUTPUT)/$$TARGET; \
+		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests; \
+	done;
 endef
 
 emit_tests:
@@ -36,34 +42,29 @@ emit_tests:
 		BASENAME_TEST=`basename $$TEST`;	\
 		echo "$(COLLECTION):$$BASENAME_TEST";	\
 	done
-	+TARGET=ebb; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -s -C $$TARGET emit_tests
-	+TARGET=sampling_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -s -C $$TARGET emit_tests
-	+TARGET=event_code_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -s -C $$TARGET emit_tests
+	+@for TARGET in $(SUB_DIRS); do \
+		BUILD_TARGET=$(OUTPUT)/$$TARGET; \
+		$(MAKE) OUTPUT=$$BUILD_TARGET -s -C $$TARGET emit_tests; \
+	done;
 
 DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
 override define INSTALL_RULE
 	$(DEFAULT_INSTALL_RULE)
-	+TARGET=ebb; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET install
-	+TARGET=sampling_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET install
-	+TARGET=event_code_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET install
+	+@for TARGET in $(SUB_DIRS); do \
+		BUILD_TARGET=$(OUTPUT)/$$TARGET; \
+		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET install; \
+	done;
 endef
 
 DEFAULT_CLEAN := $(CLEAN)
 override define CLEAN
 	$(DEFAULT_CLEAN)
 	$(RM) $(TEST_GEN_PROGS) $(OUTPUT)/loop.o
-	+TARGET=ebb; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean
-	+TARGET=sampling_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean
-	+TARGET=event_code_tests; BUILD_TARGET=$$OUTPUT/$$TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean
+	+@for TARGET in $(SUB_DIRS); do \
+		BUILD_TARGET=$(OUTPUT)/$$TARGET; \
+		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean; \
+	done;
 endef
 
-ebb:
-	TARGET=$@; BUILD_TARGET=$$OUTPUT/$$TARGET; mkdir -p $$BUILD_TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -k -C $$TARGET all
-
-sampling_tests:
-	TARGET=$@; BUILD_TARGET=$$OUTPUT/$$TARGET; mkdir -p $$BUILD_TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -k -C $$TARGET all
-
-event_code_tests:
-	TARGET=$@; BUILD_TARGET=$$OUTPUT/$$TARGET; mkdir -p $$BUILD_TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -k -C $$TARGET all
 
 .PHONY: all run_tests ebb sampling_tests event_code_tests emit_tests