Merge tag 'v4.10-rc1' into docs-next

Linux 4.10-rc1

1 files changed, 62 insertions, 0 deletions

diff --git a/tools/perf/util/c++/clang-test.cpp b/tools/perf/util/c++/clang-test.cpp
new file mode 100644
index 000000000000..9b11e8c82798
--- /dev/null
+++ b/tools/perf/util/c++/clang-test.cpp
@@ -0,0 +1,62 @@
+#include "clang.h"
+#include "clang-c.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/LLVMContext.h"
+
+#include <util-cxx.h>
+#include <tests/llvm.h>
+#include <string>
+
+class perf_clang_scope {
+public:
+	explicit perf_clang_scope() {perf_clang__init();}
+	~perf_clang_scope() {perf_clang__cleanup();}
+};
+
+static std::unique_ptr<llvm::Module>
+__test__clang_to_IR(void)
+{
+	unsigned int kernel_version;
+
+	if (fetch_kernel_version(&kernel_version, NULL, 0))
+		return std::unique_ptr<llvm::Module>(nullptr);
+
+	std::string cflag_kver("-DLINUX_VERSION_CODE=" +
+				std::to_string(kernel_version));
+
+	std::unique_ptr<llvm::Module> M =
+		perf::getModuleFromSource({cflag_kver.c_str()},
+					  "perf-test.c",
+					  test_llvm__bpf_base_prog);
+	return M;
+}
+
+extern "C" {
+int test__clang_to_IR(void)
+{
+	perf_clang_scope _scope;
+
+	auto M = __test__clang_to_IR();
+	if (!M)
+		return -1;
+	for (llvm::Function& F : *M)
+		if (F.getName() == "bpf_func__SyS_epoll_wait")
+			return 0;
+	return -1;
+}
+
+int test__clang_to_obj(void)
+{
+	perf_clang_scope _scope;
+
+	auto M = __test__clang_to_IR();
+	if (!M)
+		return -1;
+
+	auto Buffer = perf::getBPFObjectFromModule(&*M);
+	if (!Buffer)
+		return -1;
+	return 0;
+}
+
+}