linux-kernel - [PATCH v4 5/7] perf bench: Make bench its own library

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Date: Tue, 25 Jun 2024 11:42:22 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, John Garry <john.g.garry@...cle.com>, 
	Will Deacon <will@...nel.org>, James Clark <james.clark@....com>, 
	Mike Leach <mike.leach@...aro.org>, Leo Yan <leo.yan@...ux.dev>, Guo Ren <guoren@...nel.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Suzuki K Poulose <suzuki.poulose@....com>, 
	Yicong Yang <yangyicong@...ilicon.com>, Jonathan Cameron <jonathan.cameron@...wei.com>, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...sung.com>, Alice Ryhl <aliceryhl@...gle.com>, 
	Nick Terrell <terrelln@...com>, Andrei Vagin <avagin@...gle.com>, Kees Cook <keescook@...omium.org>, 
	Oliver Upton <oliver.upton@...ux.dev>, Ze Gao <zegao2021@...il.com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 5/7] perf bench: Make bench its own library

Make the benchmark code into a library so it may be linked against
things like the python module to avoid compiling code twice.

Signed-off-by: Ian Rogers <irogers@...gle.com>
Reviewed-by: James Clark <james.clark@....com>
---
 tools/perf/Build         |  4 ++--
 tools/perf/Makefile.perf | 11 +++++++++-
 tools/perf/bench/Build   | 46 ++++++++++++++++++++--------------------
 3 files changed, 35 insertions(+), 26 deletions(-)

diff --git a/tools/perf/Build b/tools/perf/Build
index fddd45ab35b4..2787f5630ff7 100644
--- a/tools/perf/Build
+++ b/tools/perf/Build
@@ -1,4 +1,4 @@
-perf-y += builtin-bench.o
+perf-bench-y += builtin-bench.o
 perf-y += builtin-annotate.o
 perf-y += builtin-config.o
 perf-y += builtin-diff.o
@@ -35,7 +35,7 @@ endif
 
 perf-$(CONFIG_LIBELF) += builtin-probe.o
 
-perf-y += bench/
+perf-bench-y += bench/
 perf-test-y += tests/
 
 perf-y += perf.o
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 9fa69dd0b472..4a3c000b9845 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -425,6 +425,9 @@ endif
 
 export PERL_PATH
 
+LIBPERF_BENCH_IN := $(OUTPUT)perf-bench-in.o
+LIBPERF_BENCH := $(OUTPUT)libperf-bench.a
+
 LIBPERF_TEST_IN := $(OUTPUT)perf-test-in.o
 LIBPERF_TEST := $(OUTPUT)libperf-test.a
 
@@ -438,7 +441,7 @@ PERFLIBS = $(LIBAPI) $(LIBPERF) $(LIBSUBCMD) $(LIBSYMBOL)
 ifdef LIBBPF_STATIC
   PERFLIBS += $(LIBBPF)
 endif
-PERFLIBS += $(LIBPERF_TEST) $(LIBPERF_UI) $(LIBPMU_EVENTS)
+PERFLIBS += $(LIBPERF_BENCH) $(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
@@ -740,6 +743,12 @@ $(LIBPMU_EVENTS_IN): FORCE prepare
 $(LIBPMU_EVENTS): $(LIBPMU_EVENTS_IN)
 	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $<
 
+$(LIBPERF_BENCH_IN): FORCE prepare
+	$(Q)$(MAKE) $(build)=perf-bench
+
+$(LIBPERF_BENCH): $(LIBPERF_BENCH_IN)
+	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $<
+
 $(LIBPERF_TEST_IN): FORCE prepare
 	$(Q)$(MAKE) $(build)=perf-test
 
diff --git a/tools/perf/bench/Build b/tools/perf/bench/Build
index c2ab30907ae7..279ab2ab4abe 100644
--- a/tools/perf/bench/Build
+++ b/tools/perf/bench/Build
@@ -1,25 +1,25 @@
-perf-y += sched-messaging.o
-perf-y += sched-pipe.o
-perf-y += sched-seccomp-notify.o
-perf-y += syscall.o
-perf-y += mem-functions.o
-perf-y += futex-hash.o
-perf-y += futex-wake.o
-perf-y += futex-wake-parallel.o
-perf-y += futex-requeue.o
-perf-y += futex-lock-pi.o
-perf-y += epoll-wait.o
-perf-y += epoll-ctl.o
-perf-y += synthesize.o
-perf-y += kallsyms-parse.o
-perf-y += find-bit-bench.o
-perf-y += inject-buildid.o
-perf-y += evlist-open-close.o
-perf-y += breakpoint.o
-perf-y += pmu-scan.o
-perf-y += uprobe.o
+perf-bench-y += sched-messaging.o
+perf-bench-y += sched-pipe.o
+perf-bench-y += sched-seccomp-notify.o
+perf-bench-y += syscall.o
+perf-bench-y += mem-functions.o
+perf-bench-y += futex-hash.o
+perf-bench-y += futex-wake.o
+perf-bench-y += futex-wake-parallel.o
+perf-bench-y += futex-requeue.o
+perf-bench-y += futex-lock-pi.o
+perf-bench-y += epoll-wait.o
+perf-bench-y += epoll-ctl.o
+perf-bench-y += synthesize.o
+perf-bench-y += kallsyms-parse.o
+perf-bench-y += find-bit-bench.o
+perf-bench-y += inject-buildid.o
+perf-bench-y += evlist-open-close.o
+perf-bench-y += breakpoint.o
+perf-bench-y += pmu-scan.o
+perf-bench-y += uprobe.o
 
-perf-$(CONFIG_X86_64) += mem-memcpy-x86-64-asm.o
-perf-$(CONFIG_X86_64) += mem-memset-x86-64-asm.o
+perf-bench-$(CONFIG_X86_64) += mem-memcpy-x86-64-asm.o
+perf-bench-$(CONFIG_X86_64) += mem-memset-x86-64-asm.o
 
-perf-$(CONFIG_NUMA) += numa.o
+perf-bench-$(CONFIG_NUMA) += numa.o
-- 
2.45.2.741.gdbec12cfda-goog