tests/tcg: Fix run for tests with specific plugin

Commit 25aaf0cb7f (“tests/tcg: reduce the number of plugin test
combinations”) added support for running tests with specific plugins
passed via the EXTRA_RUNS variable.

However, due to the optimization, the rules generated as a shuffled
combination of tests and plugins might not cover the rules required to
run the tests with a specific plugin passed via EXTRA_RUNS.

This commit fixes it by correctly generating the rules for the tests
that require a specific plugin to run, which are now passed via the
EXTRA_RUNS_WITH_PLUGIN instead of via the EXTRA_RUNS variable.

The fix essentially excludes the tests passed via EXTRA_RUNS_WITH_PLUGIN
from the rules created by the shuffled combination of tests and plugins,
to avoid running the tests twice, and generates the rules for the
test/plugin combinations listed in the EXTRA_RUNS_WITH_PLUGIN variable.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Tested-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-id: 20250801001305.2352554-1-gustavo.romero@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4 files changed, 20 insertions, 6 deletions

diff --git a/tests/tcg/Makefile.target b/tests/tcg/Makefile.target
index 18afd5b..af72903 100644
--- a/tests/tcg/Makefile.target
+++ b/tests/tcg/Makefile.target
@@ -170,6 +170,10 @@ endif
 PLUGINS=$(filter-out $(DISABLE_PLUGINS), \
 	$(patsubst %.c, lib%.so, $(notdir $(wildcard $(PLUGIN_SRC)/*.c))))
 
+strip-plugin = $(wordlist 1, 1, $(subst -with-, ,$1))
+extract-plugin = $(wordlist 2, 2, $(subst -with-, ,$1))
+extract-test = $(subst run-plugin-,,$(wordlist 1, 1, $(subst -with-, ,$1)))
+
 # We need to ensure expand the run-plugin-TEST-with-PLUGIN
 # pre-requistes manually here as we can't use stems to handle it. We
 # only expand MULTIARCH_TESTS which are common on most of our targets
@@ -179,6 +183,13 @@ PLUGINS=$(filter-out $(DISABLE_PLUGINS), \
 
 ifneq ($(MULTIARCH_TESTS),)
 
+# Extract extra tests from the extra test+plugin combination.
+EXTRA_TESTS_WITH_PLUGIN=$(foreach test, \
+                        $(EXTRA_RUNS_WITH_PLUGIN),$(call extract-test,$(test)))
+# Exclude tests that were specified to run with specific plugins from the tests
+# which can run with any plugin combination, so we don't run it twice.
+MULTIARCH_TESTS:=$(filter-out $(EXTRA_TESTS_WITH_PLUGIN), $(MULTIARCH_TESTS))
+
 NUM_PLUGINS := $(words $(PLUGINS))
 NUM_TESTS := $(words $(MULTIARCH_TESTS))
 
@@ -186,19 +197,22 @@ define mod_plus_one
   $(shell $(PYTHON) -c "print( ($(1) % $(2)) + 1 )")
 endef
 
+# Rules for running tests with any plugin combination, i.e., no specific plugin.
 $(foreach _idx, $(shell seq 1 $(NUM_TESTS)), \
 	$(eval _test := $(word $(_idx), $(MULTIARCH_TESTS))) \
 	$(eval _plugin := $(word $(call mod_plus_one, $(_idx), $(NUM_PLUGINS)), $(PLUGINS))) \
 	$(eval run-plugin-$(_test)-with-$(_plugin): $(_test) $(_plugin)) \
 	$(eval RUN_TESTS+=run-plugin-$(_test)-with-$(_plugin)))
 
+# Rules for running extra tests with specific plugins.
+$(foreach f,$(EXTRA_RUNS_WITH_PLUGIN), \
+    $(eval $(f): $(call extract-test,$(f)) $(call extract-plugin,$(f))))
+
 endif # MULTIARCH_TESTS
 endif # CONFIG_PLUGIN
 
-strip-plugin = $(wordlist 1, 1, $(subst -with-, ,$1))
-extract-plugin = $(wordlist 2, 2, $(subst -with-, ,$1))
-
 RUN_TESTS+=$(EXTRA_RUNS)
+RUN_TESTS+=$(EXTRA_RUNS_WITH_PLUGIN)
 
 # Some plugins need additional arguments above the default to fully
 # exercise things. We can define them on a per-test basis here.
diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target
index 38345ff..8dc65d7 100644
--- a/tests/tcg/multiarch/Makefile.target
+++ b/tests/tcg/multiarch/Makefile.target
@@ -201,7 +201,7 @@ run-plugin-test-plugin-mem-access-with-libmem.so: \
 	$(SRC_PATH)/tests/tcg/multiarch/check-plugin-output.sh \
 	$(QEMU) $<
 
-EXTRA_RUNS += run-plugin-test-plugin-mem-access-with-libmem.so
+EXTRA_RUNS_WITH_PLUGIN += run-plugin-test-plugin-mem-access-with-libmem.so
 endif
 
 # Update TESTS
diff --git a/tests/tcg/multiarch/system/Makefile.softmmu-target b/tests/tcg/multiarch/system/Makefile.softmmu-target
index 4171b4e..98c4eda 100644
--- a/tests/tcg/multiarch/system/Makefile.softmmu-target
+++ b/tests/tcg/multiarch/system/Makefile.softmmu-target
@@ -77,5 +77,5 @@ run-plugin-memory-with-libmem.so: memory libmem.so
 run-plugin-memory-with-libmem.so: PLUGIN_ARGS=$(COMMA)region-summary=true
 run-plugin-memory-with-libmem.so: CHECK_PLUGIN_OUTPUT_COMMAND=$(MULTIARCH_SYSTEM_SRC)/validate-memory-counts.py $@.out
 
-EXTRA_RUNS += run-plugin-memory-with-libmem.so
+EXTRA_RUNS_WITH_PLUGIN += run-plugin-memory-with-libmem.so
 endif
diff --git a/tests/tcg/x86_64/Makefile.softmmu-target b/tests/tcg/x86_64/Makefile.softmmu-target
index 3e30ca9..4e65f58 100644
--- a/tests/tcg/x86_64/Makefile.softmmu-target
+++ b/tests/tcg/x86_64/Makefile.softmmu-target
@@ -40,5 +40,5 @@ run-plugin-patch-target-with-libpatch.so:		\
 run-plugin-patch-target-with-libpatch.so:		\
 	CHECK_PLUGIN_OUTPUT_COMMAND=$(X64_SYSTEM_SRC)/validate-patch.py $@.out
 run-plugin-patch-target-with-libpatch.so: patch-target libpatch.so
-EXTRA_RUNS+=run-plugin-patch-target-with-libpatch.so
+EXTRA_RUNS_WITH_PLUGIN+=run-plugin-patch-target-with-libpatch.so
 endif