perf tools: Make numa benchmark optional

Commit "perf: Add 'perf bench numa mem'..." added a NUMA performance
benchmark to perf. Make this optional and test for required
dependencies.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1359337882-21821-1-git-send-email-peter@hurleysoftware.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 29 insertions, 2 deletions

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index b62dbc0d974a..4b1044cbd84c 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -47,6 +47,8 @@ include config/utilities.mak
 # backtrace post unwind.
 #
 # Define NO_BACKTRACE if you do not want stack backtrace debug feature
+#
+# Define NO_LIBNUMA if you do not want numa perf benchmark
 
 $(OUTPUT)PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE
         @$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT)
@@ -103,7 +105,7 @@ ifdef PARSER_DEBUG
 endif
 
 CFLAGS = -fno-omit-frame-pointer -ggdb3 -funwind-tables -Wall -Wextra -std=gnu99 $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) $(PARSER_DEBUG_CFLAGS)
-EXTLIBS = -lpthread -lrt -lelf -lm -lnuma
+EXTLIBS = -lpthread -lrt -lelf -lm
 ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 ALL_LDFLAGS = $(LDFLAGS)
 STRIP ?= strip
@@ -492,7 +494,6 @@ LIB_OBJS += $(OUTPUT)tests/python-use.o
 BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
 BUILTIN_OBJS += $(OUTPUT)builtin-bench.o
 # Benchmark modules
-BUILTIN_OBJS += $(OUTPUT)bench/numa.o
 BUILTIN_OBJS += $(OUTPUT)bench/sched-messaging.o
 BUILTIN_OBJS += $(OUTPUT)bench/sched-pipe.o
 ifeq ($(RAW_ARCH),x86_64)
@@ -839,6 +840,17 @@ ifndef NO_BACKTRACE
        endif
 endif
 
+ifndef NO_LIBNUMA
+        FLAGS_LIBNUMA = $(ALL_CFLAGS) $(ALL_LDFLAGS) -lnuma
+        ifneq ($(call try-cc,$(SOURCE_LIBNUMA),$(FLAGS_LIBNUMA),libnuma),y)
+                msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numa-libs-devel or libnuma-dev);
+        else
+                BASIC_CFLAGS += -DLIBNUMA_SUPPORT
+                BUILTIN_OBJS += $(OUTPUT)bench/numa.o
+                EXTLIBS += -lnuma
+        endif
+endif
+
 ifdef ASCIIDOC8
         export ASCIIDOC8
 endif
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index e5d514bf5365..77298bf892b8 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -35,6 +35,7 @@ struct bench_suite {
 /* sentinel: easy for help */
 #define suite_all { "all", "Test all benchmark suites", NULL }
 
+#ifdef LIBNUMA_SUPPORT
 static struct bench_suite numa_suites[] = {
         { "mem",
           "Benchmark for NUMA workloads",
@@ -44,6 +45,7 @@ static struct bench_suite numa_suites[] = {
           NULL,
           NULL                  }
 };
+#endif
 
 static struct bench_suite sched_suites[] = {
         { "messaging",
@@ -78,9 +80,11 @@ struct bench_subsys {
 };
 
 static struct bench_subsys subsystems[] = {
+#ifdef LIBNUMA_SUPPORT
         { "numa",
           "NUMA scheduling and MM behavior",
           numa_suites },
+#endif
         { "sched",
           "scheduler and IPC mechanism",
           sched_suites },
diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-tests.mak
index f5ac77485a4f..b4eabb44e381 100644
--- a/tools/perf/config/feature-tests.mak
+++ b/tools/perf/config/feature-tests.mak
@@ -225,3 +225,14 @@ int main(void)
         return on_exit(NULL, NULL);
 }
 endef
+
+define SOURCE_LIBNUMA
+#include <numa.h>
+#include <numaif.h>
+
+int main(void)
+{
+        numa_available();
+        return 0;
+}
+endef
\ No newline at end of file