perf test: Make tests its own library

Make the tests code its own library. This is done to avoid compiling
code twice, once for the perf tool and once for the perf python
module.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Gary Guo <gary@garyguo.net>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Cc: Ze Gao <zegao2021@gmail.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andrei Vagin <avagin@google.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: Björn Roy Baron <bjorn3_gh@protonmail.com>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240625214117.953777-5-irogers@google.com

tools/perf/Build

@@ -36,7 +36,7 @@ endif
 perf-$(CONFIG_LIBELF) += builtin-probe.o
 
 perf-y += bench/
-perf-y += tests/
+perf-test-y += tests/
 
 perf-y += perf.o
 
@@ -55,6 +55,7 @@ CFLAGS_builtin-report.o	   += -DDOCDIR="BUILD_STR($(srcdir_SQ)/Documentation)"
 
 perf-y += util/
 perf-y += arch/
+perf-test-y += arch/
 perf-ui-y += ui/
 perf-y += scripts/
 

tools/perf/Makefile.perf

@@ -425,6 +425,9 @@ endif
 
 export PERL_PATH
 
+LIBPERF_TEST_IN := $(OUTPUT)perf-test-in.o
+LIBPERF_TEST := $(OUTPUT)libperf-test.a
+
 LIBPERF_UI_IN := $(OUTPUT)perf-ui-in.o
 LIBPERF_UI := $(OUTPUT)libperf-ui.a
 
@@ -435,7 +438,7 @@ PERFLIBS = $(LIBAPI) $(LIBPERF) $(LIBSUBCMD) $(LIBSYMBOL)
 ifdef LIBBPF_STATIC
   PERFLIBS += $(LIBBPF)
 endif
-PERFLIBS += $(LIBPERF_UI) $(LIBPMU_EVENTS)
+PERFLIBS += $(LIBPERF_TEST) $(LIBPERF_UI) $(LIBPMU_EVENTS)
 
 # We choose to avoid "if .. else if .. else .. endif endif"
 # because maintaining the nesting to match is a pain.  If
@@ -737,6 +740,12 @@ $(LIBPMU_EVENTS_IN): FORCE prepare
 $(LIBPMU_EVENTS): $(LIBPMU_EVENTS_IN)
 	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $<
 
+$(LIBPERF_TEST_IN): FORCE prepare
+	$(Q)$(MAKE) $(build)=perf-test
+
+$(LIBPERF_TEST): $(LIBPERF_TEST_IN)
+	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $<
+
 $(LIBPERF_UI_IN): FORCE prepare
 	$(Q)$(MAKE) $(build)=perf-ui
 

tools/perf/arch/Build

 perf-y += common.o
 perf-y += $(SRCARCH)/
+perf-test-y += $(SRCARCH)/

tools/perf/arch/arm/Build

 perf-y += util/
-perf-$(CONFIG_DWARF_UNWIND) += tests/
+perf-test-$(CONFIG_DWARF_UNWIND) += tests/

tools/perf/arch/arm/tests/Build

-perf-y += regs_load.o
-perf-y += dwarf-unwind.o
-perf-y += vectors-page.o
+perf-test-y += regs_load.o
+perf-test-y += dwarf-unwind.o
+perf-test-y += vectors-page.o
 
-perf-y += arch-tests.o
+perf-test-y += arch-tests.o

tools/perf/arch/arm64/Build

 perf-y += util/
-perf-y += tests/
+perf-test-y += tests/

tools/perf/arch/arm64/tests/Build

-perf-y += regs_load.o
-perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
+perf-test-y += regs_load.o
+perf-test-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
 
-perf-y += arch-tests.o
-perf-y += cpuid-match.o
+perf-test-y += arch-tests.o
+perf-test-y += cpuid-match.o

tools/perf/arch/powerpc/Build

 perf-y += util/
-perf-y += tests/
+perf-test-y += tests/

tools/perf/arch/powerpc/tests/Build

-perf-$(CONFIG_DWARF_UNWIND) += regs_load.o
-perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
+perf-test-$(CONFIG_DWARF_UNWIND) += regs_load.o
+perf-test-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
 
-perf-y += arch-tests.o
+perf-test-y += arch-tests.o

tools/perf/arch/x86/Build

 perf-y += util/
-perf-y += tests/
+perf-test-y += tests/
 
 ifdef SHELLCHECK
   SHELL_TESTS := entry/syscalls/syscalltbl.sh
@@ -13,4 +13,4 @@ $(OUTPUT)%.shellcheck_log: %
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,test)shellcheck -a -S warning "$<" > $@ || (cat $@ && rm $@ && false)
 
-perf-y += $(TEST_LOGS)
+perf-test-y += $(TEST_LOGS)

tools/perf/arch/x86/tests/Build

-perf-$(CONFIG_DWARF_UNWIND) += regs_load.o
-perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
+perf-test-$(CONFIG_DWARF_UNWIND) += regs_load.o
+perf-test-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
 
-perf-y += arch-tests.o
-perf-y += sample-parsing.o
-perf-y += hybrid.o
-perf-$(CONFIG_AUXTRACE) += intel-pt-test.o
+perf-test-y += arch-tests.o
+perf-test-y += sample-parsing.o
+perf-test-y += hybrid.o
+perf-test-$(CONFIG_AUXTRACE) += intel-pt-test.o
 ifeq ($(CONFIG_EXTRA_TESTS),y)
-perf-$(CONFIG_AUXTRACE) += insn-x86.o
+perf-test-$(CONFIG_AUXTRACE) += insn-x86.o
 endif
-perf-$(CONFIG_X86_64) += bp-modify.o
-perf-y += amd-ibs-via-core-pmu.o
+perf-test-$(CONFIG_X86_64) += bp-modify.o
+perf-test-y += amd-ibs-via-core-pmu.o
 
 ifdef SHELLCHECK
   SHELL_TESTS := gen-insn-x86-dat.sh
@@ -23,4 +23,4 @@ $(OUTPUT)%.shellcheck_log: %
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,test)shellcheck -a -S warning "$<" > $@ || (cat $@ && rm $@ && false)
 
-perf-y += $(TEST_LOGS)
+perf-test-y += $(TEST_LOGS)

tools/perf/tests/Build

 # SPDX-License-Identifier: GPL-2.0
 
-perf-y += builtin-test.o
-perf-y += tests-scripts.o
-perf-y += parse-events.o
-perf-y += dso-data.o
-perf-y += attr.o
-perf-y += vmlinux-kallsyms.o
-perf-$(CONFIG_LIBTRACEEVENT) += openat-syscall.o
-perf-$(CONFIG_LIBTRACEEVENT) += openat-syscall-all-cpus.o
-perf-$(CONFIG_LIBTRACEEVENT) += openat-syscall-tp-fields.o
-perf-$(CONFIG_LIBTRACEEVENT) += mmap-basic.o
-perf-y += perf-record.o
-perf-y += evsel-roundtrip-name.o
-perf-$(CONFIG_LIBTRACEEVENT) += evsel-tp-sched.o
-perf-y += fdarray.o
-perf-y += pmu.o
-perf-y += pmu-events.o
-perf-y += hists_common.o
-perf-y += hists_link.o
-perf-y += hists_filter.o
-perf-y += hists_output.o
-perf-y += hists_cumulate.o
-perf-y += python-use.o
-perf-y += bp_signal.o
-perf-y += bp_signal_overflow.o
-perf-y += bp_account.o
-perf-y += wp.o
-perf-y += task-exit.o
-perf-y += sw-clock.o
-perf-y += mmap-thread-lookup.o
-perf-y += thread-maps-share.o
-perf-$(CONFIG_LIBTRACEEVENT) += switch-tracking.o
-perf-y += keep-tracking.o
-perf-y += code-reading.o
-perf-y += sample-parsing.o
-perf-y += parse-no-sample-id-all.o
-perf-y += kmod-path.o
-perf-y += thread-map.o
-perf-y += topology.o
-perf-y += mem.o
-perf-y += cpumap.o
-perf-y += stat.o
-perf-y += event_update.o
-perf-y += event-times.o
-perf-y += expr.o
-perf-y += backward-ring-buffer.o
-perf-y += sdt.o
-perf-y += is_printable_array.o
-perf-y += bitmap.o
-perf-y += perf-hooks.o
-perf-y += unit_number__scnprintf.o
-perf-y += mem2node.o
-perf-y += maps.o
-perf-y += time-utils-test.o
-perf-y += genelf.o
-perf-y += api-io.o
-perf-y += demangle-java-test.o
-perf-y += demangle-ocaml-test.o
-perf-y += pfm.o
-perf-y += parse-metric.o
-perf-y += pe-file-parsing.o
-perf-y += expand-cgroup.o
-perf-y += perf-time-to-tsc.o
-perf-y += dlfilter-test.o
-perf-y += sigtrap.o
-perf-y += event_groups.o
-perf-y += symbols.o
-perf-y += util.o
+perf-test-y += builtin-test.o
+perf-test-y += tests-scripts.o
+perf-test-y += parse-events.o
+perf-test-y += dso-data.o
+perf-test-y += attr.o
+perf-test-y += vmlinux-kallsyms.o
+perf-test-$(CONFIG_LIBTRACEEVENT) += openat-syscall.o
+perf-test-$(CONFIG_LIBTRACEEVENT) += openat-syscall-all-cpus.o
+perf-test-$(CONFIG_LIBTRACEEVENT) += openat-syscall-tp-fields.o
+perf-test-$(CONFIG_LIBTRACEEVENT) += mmap-basic.o
+perf-test-y += perf-record.o
+perf-test-y += evsel-roundtrip-name.o
+perf-test-$(CONFIG_LIBTRACEEVENT) += evsel-tp-sched.o
+perf-test-y += fdarray.o
+perf-test-y += pmu.o
+perf-test-y += pmu-events.o
+perf-test-y += hists_common.o
+perf-test-y += hists_link.o
+perf-test-y += hists_filter.o
+perf-test-y += hists_output.o
+perf-test-y += hists_cumulate.o
+perf-test-y += python-use.o
+perf-test-y += bp_signal.o
+perf-test-y += bp_signal_overflow.o
+perf-test-y += bp_account.o
+perf-test-y += wp.o
+perf-test-y += task-exit.o
+perf-test-y += sw-clock.o
+perf-test-y += mmap-thread-lookup.o
+perf-test-y += thread-maps-share.o
+perf-test-$(CONFIG_LIBTRACEEVENT) += switch-tracking.o
+perf-test-y += keep-tracking.o
+perf-test-y += code-reading.o
+perf-test-y += sample-parsing.o
+perf-test-y += parse-no-sample-id-all.o
+perf-test-y += kmod-path.o
+perf-test-y += thread-map.o
+perf-test-y += topology.o
+perf-test-y += mem.o
+perf-test-y += cpumap.o
+perf-test-y += stat.o
+perf-test-y += event_update.o
+perf-test-y += event-times.o
+perf-test-y += expr.o
+perf-test-y += backward-ring-buffer.o
+perf-test-y += sdt.o
+perf-test-y += is_printable_array.o
+perf-test-y += bitmap.o
+perf-test-y += perf-hooks.o
+perf-test-y += unit_number__scnprintf.o
+perf-test-y += mem2node.o
+perf-test-y += maps.o
+perf-test-y += time-utils-test.o
+perf-test-y += genelf.o
+perf-test-y += api-io.o
+perf-test-y += demangle-java-test.o
+perf-test-y += demangle-ocaml-test.o
+perf-test-y += pfm.o
+perf-test-y += parse-metric.o
+perf-test-y += pe-file-parsing.o
+perf-test-y += expand-cgroup.o
+perf-test-y += perf-time-to-tsc.o
+perf-test-y += dlfilter-test.o
+perf-test-y += sigtrap.o
+perf-test-y += event_groups.o
+perf-test-y += symbols.o
+perf-test-y += util.o
 
 ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc))
-perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
+perf-test-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
 endif
 
 CFLAGS_attr.o         += -DBINDIR="BUILD_STR($(bindir_SQ))" -DPYTHON="BUILD_STR($(PYTHON_WORD))"
 CFLAGS_python-use.o   += -DPYTHONPATH="BUILD_STR($(OUTPUT)python)" -DPYTHON="BUILD_STR($(PYTHON_WORD))"
 CFLAGS_dwarf-unwind.o += -fno-optimize-sibling-calls
 
-perf-y += workloads/
+perf-test-y += workloads/
 
 ifdef SHELLCHECK
   SHELL_TESTS := $(shell find tests/shell -executable -type f -name '*.sh')
@@ -90,4 +90,4 @@ $(OUTPUT)%.shellcheck_log: %
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,test)shellcheck -a -S warning "$<" > $@ || (cat $@ && rm $@ && false)
 
-perf-y += $(TEST_LOGS)
+perf-test-y += $(TEST_LOGS)

tools/perf/tests/workloads/Build

 # SPDX-License-Identifier: GPL-2.0
 
-perf-y += noploop.o
-perf-y += thloop.o
-perf-y += leafloop.o
-perf-y += sqrtloop.o
-perf-y += brstack.o
-perf-y += datasym.o
+perf-test-y += noploop.o
+perf-test-y += thloop.o
+perf-test-y += leafloop.o
+perf-test-y += sqrtloop.o
+perf-test-y += brstack.o
+perf-test-y += datasym.o
 
 CFLAGS_sqrtloop.o         = -g -O0 -fno-inline -U_FORTIFY_SOURCE
 CFLAGS_leafloop.o         = -g -O0 -fno-inline -fno-omit-frame-pointer -U_FORTIFY_SOURCE