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authorArnaldo Carvalho de Melo <acme@redhat.com>2017-03-02 18:55:49 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-03-04 01:07:19 +0300
commit120010cb1eea151d38a3e66f5ffc79a0c3110292 (patch)
tree149786c6b833f4c80e6229b6e9b67b8c2bb980ea
parente3ba76deef23064fc272424b86b506cd80b04fc5 (diff)
downloadlinux-120010cb1eea151d38a3e66f5ffc79a0c3110292.tar.xz
tools build: Add test for sched_getcpu()
Instead of trying to go on adding more ifdef conditions, do a feature test and define HAVE_SCHED_GETCPU_SUPPORT instead, then use it to provide the prototype. No need to change the stub, as it is already a __weak symbol. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-yge89er9g90sc0v6k0a0r5tr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/build/Makefile.feature1
-rw-r--r--tools/build/feature/Makefile6
-rw-r--r--tools/build/feature/test-all.c5
-rw-r--r--tools/build/feature/test-sched_getcpu.c7
-rw-r--r--tools/perf/Makefile.config4
-rw-r--r--tools/perf/util/cloexec.h6
-rw-r--r--tools/perf/util/util.h4
7 files changed, 24 insertions, 9 deletions
diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index e3fb5ecbdcb6..523911f316ce 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -63,6 +63,7 @@ FEATURE_TESTS_BASIC := \
lzma \
get_cpuid \
bpf \
+ sched_getcpu \
sdt
# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index b564a2eea039..ab1e2bbc2e96 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -48,7 +48,8 @@ FILES= \
test-get_cpuid.bin \
test-sdt.bin \
test-cxx.bin \
- test-jvmti.bin
+ test-jvmti.bin \
+ test-sched_getcpu.bin
FILES := $(addprefix $(OUTPUT),$(FILES))
@@ -91,6 +92,9 @@ $(OUTPUT)test-libelf.bin:
$(OUTPUT)test-glibc.bin:
$(BUILD)
+$(OUTPUT)test-sched_getcpu.bin:
+ $(BUILD)
+
DWARFLIBS := -ldw
ifeq ($(findstring -static,${LDFLAGS}),-static)
DWARFLIBS += -lelf -lebl -lz -llzma -lbz2
diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 699e43627397..cc6c7c01f4ca 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -117,6 +117,10 @@
# include "test-pthread-attr-setaffinity-np.c"
#undef main
+#define main main_test_sched_getcpu
+# include "test-sched_getcpu.c"
+#undef main
+
# if 0
/*
* Disable libbabeltrace check for test-all, because the requested
@@ -182,6 +186,7 @@ int main(int argc, char *argv[])
main_test_get_cpuid();
main_test_bpf();
main_test_libcrypto();
+ main_test_sched_getcpu();
main_test_sdt();
return 0;
diff --git a/tools/build/feature/test-sched_getcpu.c b/tools/build/feature/test-sched_getcpu.c
new file mode 100644
index 000000000000..c4a148dd7104
--- /dev/null
+++ b/tools/build/feature/test-sched_getcpu.c
@@ -0,0 +1,7 @@
+#define _GNU_SOURCE
+#include <sched.h>
+
+int main(void)
+{
+ return sched_getcpu();
+}
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 27c9fbca7bd9..2b656de99495 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -317,6 +317,10 @@ ifdef NO_DWARF
NO_LIBDW_DWARF_UNWIND := 1
endif
+ifeq ($(feature-sched_getcpu), 1)
+ CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
+endif
+
ifndef NO_LIBELF
CFLAGS += -DHAVE_LIBELF_SUPPORT
EXTLIBS += -lelf
diff --git a/tools/perf/util/cloexec.h b/tools/perf/util/cloexec.h
index d0d465953d36..94a5a7d829d5 100644
--- a/tools/perf/util/cloexec.h
+++ b/tools/perf/util/cloexec.h
@@ -3,10 +3,4 @@
unsigned long perf_event_open_cloexec_flag(void);
-#ifdef __GLIBC_PREREQ
-#if !__GLIBC_PREREQ(2, 6) && !defined(__UCLIBC__)
-int sched_getcpu(void) __THROW;
-#endif
-#endif
-
#endif /* __PERF_CLOEXEC_H */
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index c74708da8571..b2cfa47990dc 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -355,8 +355,8 @@ void print_binary(unsigned char *data, size_t len,
size_t bytes_per_line, print_binary_t printer,
void *extra);
-#if !defined(__GLIBC__) && !defined(__ANDROID__)
-extern int sched_getcpu(void);
+#ifndef HAVE_SCHED_GETCPU_SUPPORT
+int sched_getcpu(void);
#endif
int is_printable_array(char *p, unsigned int len);