LXR linux/tools/perf/util/llvm-utils.h

   1/*
   2 * Copyright (C) 2015, Wang Nan <wangnan0@huawei.com>
   3 * Copyright (C) 2015, Huawei Inc.
   4 */
   5#ifndef __LLVM_UTILS_H
   6#define __LLVM_UTILS_H
   7
   8#include "debug.h"
   9
  10struct llvm_param {
  11        /* Path of clang executable */
  12        const char *clang_path;
  13        /*
  14         * Template of clang bpf compiling. 5 env variables
  15         * can be used:
  16         *   $CLANG_EXEC:               Path to clang.
  17         *   $CLANG_OPTIONS:            Extra options to clang.
  18         *   $KERNEL_INC_OPTIONS:       Kernel include directories.
  19         *   $WORKING_DIR:              Kernel source directory.
  20         *   $CLANG_SOURCE:             Source file to be compiled.
  21         */
  22        const char *clang_bpf_cmd_template;
  23        /* Will be filled in $CLANG_OPTIONS */
  24        const char *clang_opt;
  25        /* Where to find kbuild system */
  26        const char *kbuild_dir;
  27        /*
  28         * Arguments passed to make, like 'ARCH=arm' if doing cross
  29         * compiling. Should not be used for dynamic compiling.
  30         */
  31        const char *kbuild_opts;
  32        /*
  33         * Default is false. If one of the above fields is set by user
  34         * explicitly then user_set_llvm is set to true. This is used
  35         * for perf test. If user doesn't set anything in .perfconfig
  36         * and clang is not found, don't trigger llvm test.
  37         */
  38        bool user_set_param;
  39};
  40
  41extern struct llvm_param llvm_param;
  42int perf_llvm_config(const char *var, const char *value);
  43
  44int llvm__compile_bpf(const char *path, void **p_obj_buf, size_t *p_obj_buf_sz);
  45
  46/* This function is for test__llvm() use only */
  47int llvm__search_clang(void);
  48#endif
  49