mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 23:53:55 +08:00
2bd42de0e1
The following commits will use builtin clang to compile BPF scripts. llvm__get_kbuild_opts() and llvm__get_nr_cpus() are extracted to help building '-DKERNEL_VERSION_CODE' and '-D__NR_CPUS__' macros. Doing object dumping in bpf loader, so further builtin clang compiling needn't consider it. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Joe Stringer <joe@ovn.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/20161126070354.141764-7-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
|
|
* 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 set to true, write compiling result
|
|
* to object file.
|
|
*/
|
|
bool dump_obj;
|
|
/*
|
|
* 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;
|
|
int perf_llvm_config(const char *var, const char *value);
|
|
|
|
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 */
|
|
int llvm__search_clang(void);
|
|
|
|
/* Following functions are reused by builtin clang support */
|
|
void llvm__get_kbuild_opts(char **kbuild_dir, char **kbuild_include_opts);
|
|
int llvm__get_nr_cpus(void);
|
|
|
|
void llvm__dump_obj(const char *path, void *obj_buf, size_t size);
|
|
#endif
|