These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / tools / perf / util / llvm-utils.h

diff --git a/kernel/tools/perf/util/llvm-utils.h b/kernel/tools/perf/util/llvm-utils.h
new file mode 100644 (file)
index 0000000..5b3cf1c
--- /dev/null
+++ b/kernel/tools/perf/util/llvm-utils.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015, Wang Nan <wangnan0@huawei.com>
+ * Copyright (C) 2015, Huawei Inc.
+ */
+#ifndef __LLVM_UTILS_H
+#define __LLVM_UTILS_H
+
+#include "debug.h"
+
+struct llvm_param {
+       /* Path of clang executable */
+       const char *clang_path;
+       /*
+        * Template of clang bpf compiling. 5 env variables
+        * can be used:
+        *   $CLANG_EXEC:               Path to clang.
+        *   $CLANG_OPTIONS:            Extra options to clang.
+        *   $KERNEL_INC_OPTIONS:       Kernel include directories.
+        *   $WORKING_DIR:              Kernel source directory.
+        *   $CLANG_SOURCE:             Source file to be compiled.
+        */
+       const char *clang_bpf_cmd_template;
+       /* Will be filled in $CLANG_OPTIONS */
+       const char *clang_opt;
+       /* Where to find kbuild system */
+       const char *kbuild_dir;
+       /*
+        * Arguments passed to make, like 'ARCH=arm' if doing cross
+        * compiling. Should not be used for dynamic compiling.
+        */
+       const char *kbuild_opts;
+       /*
+        * Default is false. If one of the above fields is set by user
+        * explicitly then user_set_llvm is set to true. This is used
+        * for perf test. If user doesn't set anything in .perfconfig
+        * and clang is not found, don't trigger llvm test.
+        */
+       bool user_set_param;
+};
+
+extern struct llvm_param llvm_param;
+extern int perf_llvm_config(const char *var, const char *value);
+
+extern int llvm__compile_bpf(const char *path, void **p_obj_buf,
+                            size_t *p_obj_buf_sz);
+
+/* This function is for test__llvm() use only */
+extern int llvm__search_clang(void);
+#endif