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Subject[PATCH 11/36] tools build feature: Check if pthread_barrier_t is available
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

As 'perf bench futex wake-parallel" will use this, which is not
available in older systems such as versions of the android NDK used in
my container build tests (r12b and r15c at the moment).

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: James Yang <james.yang@arm.com
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-1i7iv54in4wj08lwo55b0pzv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/build/Makefile.feature | 1 +
tools/build/feature/Makefile | 4 ++++
tools/build/feature/test-all.c | 5 +++++
tools/build/feature/test-pthread-barrier.c | 12 ++++++++++++
tools/perf/Makefile.config | 4 ++++
5 files changed, 26 insertions(+)
create mode 100644 tools/build/feature/test-pthread-barrier.c

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index c71a05b9c984..e52fcefee379 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -56,6 +56,7 @@ FEATURE_TESTS_BASIC := \
libunwind-arm \
libunwind-aarch64 \
pthread-attr-setaffinity-np \
+ pthread-barrier \
stackprotector-all \
timerfd \
libdw-dwarf-unwind \
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 96982640fbf8..cff38f342283 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -37,6 +37,7 @@ FILES= \
test-libunwind-debug-frame-arm.bin \
test-libunwind-debug-frame-aarch64.bin \
test-pthread-attr-setaffinity-np.bin \
+ test-pthread-barrier.bin \
test-stackprotector-all.bin \
test-timerfd.bin \
test-libdw-dwarf-unwind.bin \
@@ -79,6 +80,9 @@ $(OUTPUT)test-hello.bin:
$(OUTPUT)test-pthread-attr-setaffinity-np.bin:
$(BUILD) -D_GNU_SOURCE -lpthread

+$(OUTPUT)test-pthread-barrier.bin:
+ $(BUILD) -lpthread
+
$(OUTPUT)test-stackprotector-all.bin:
$(BUILD) -fstack-protector-all

diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 4112702e4aed..6fdf83263ab7 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -118,6 +118,10 @@
# include "test-pthread-attr-setaffinity-np.c"
#undef main

+#define main main_test_pthread_barrier
+# include "test-pthread-barrier.c"
+#undef main
+
#define main main_test_sched_getcpu
# include "test-sched_getcpu.c"
#undef main
@@ -187,6 +191,7 @@ int main(int argc, char *argv[])
main_test_sync_compare_and_swap(argc, argv);
main_test_zlib();
main_test_pthread_attr_setaffinity_np();
+ main_test_pthread_barrier();
main_test_lzma();
main_test_get_cpuid();
main_test_bpf();
diff --git a/tools/build/feature/test-pthread-barrier.c b/tools/build/feature/test-pthread-barrier.c
new file mode 100644
index 000000000000..0558d9334d97
--- /dev/null
+++ b/tools/build/feature/test-pthread-barrier.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdint.h>
+#include <pthread.h>
+
+int main(void)
+{
+ pthread_barrier_t barrier;
+
+ pthread_barrier_init(&barrier, NULL, 1);
+ pthread_barrier_wait(&barrier);
+ return pthread_barrier_destroy(&barrier);
+}
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index f6786fa2419f..2c437baf8364 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -263,6 +263,10 @@ ifeq ($(feature-pthread-attr-setaffinity-np), 1)
CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
endif

+ifeq ($(feature-pthread-barrier), 1)
+ CFLAGS += -DHAVE_PTHREAD_BARRIER
+endif
+
ifndef NO_BIONIC
$(call feature_check,bionic)
ifeq ($(feature-bionic), 1)
--
2.13.6
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