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authorMasami Hiramatsu <mhiramat@kernel.org>2016-07-12 13:05:56 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-07-14 05:09:09 +0300
commite26e63be64a108c1fd12020b93b5b447ffe0532b (patch)
tree456d74dd1e29ca602315eaa9a77460146c7e4f96 /tools/build/feature
parent7e9fca51fbf8430e27fb6b29299eda575e3f00cf (diff)
downloadlinux-e26e63be64a108c1fd12020b93b5b447ffe0532b.tar.xz
perf build: Add sdt feature detection
This checks whether sys/sdt.h is available or not, which is required for DTRACE_PROBE(). We can disable this feature by passing NO_SDT=1 when building. This flag will be used for SDT test case and further SDT events in perftools. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/146831795615.17065.17513820540591053933.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build/feature')
-rw-r--r--tools/build/feature/Makefile6
-rw-r--r--tools/build/feature/test-all.c5
-rw-r--r--tools/build/feature/test-sdt.c7
3 files changed, 17 insertions, 1 deletions
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index d6017c1abdb0..a0b29a311816 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -45,7 +45,8 @@ FILES= \
test-zlib.bin \
test-lzma.bin \
test-bpf.bin \
- test-get_cpuid.bin
+ test-get_cpuid.bin \
+ test-sdt.bin
FILES := $(addprefix $(OUTPUT),$(FILES))
@@ -213,6 +214,9 @@ $(OUTPUT)test-get_cpuid.bin:
$(OUTPUT)test-bpf.bin:
$(BUILD)
+$(OUTPUT)test-sdt.bin:
+ $(BUILD)
+
-include $(OUTPUT)*.d
###############################
diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 843aed024a3a..699e43627397 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -145,6 +145,10 @@
# include "test-libcrypto.c"
#undef main
+#define main main_test_sdt
+# include "test-sdt.c"
+#undef main
+
int main(int argc, char *argv[])
{
main_test_libpython();
@@ -178,6 +182,7 @@ int main(int argc, char *argv[])
main_test_get_cpuid();
main_test_bpf();
main_test_libcrypto();
+ main_test_sdt();
return 0;
}
diff --git a/tools/build/feature/test-sdt.c b/tools/build/feature/test-sdt.c
new file mode 100644
index 000000000000..e4531a6e80ea
--- /dev/null
+++ b/tools/build/feature/test-sdt.c
@@ -0,0 +1,7 @@
+#include <sys/sdt.h>
+
+int main(void)
+{
+ DTRACE_PROBE(provider, name);
+ return 0;
+}