perf llvm: Display eBPF compiling command in debug output (5eab5a7e) · Commits · 戴 / test

tools/perf/util/llvm-utils.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -433,6 +433,7 @@ int llvm__compile_bpf(const char path, void *p_obj_buf,
		char serr[STRERR_BUFSIZE];
		char kbuild_dir = NULL, kbuild_include_opts = NULL;
		const char *template = llvm_param.clang_bpf_cmd_template;
		char command_echo, command_out;

		if (path[0] != '-' && realpath(path, abspath) == NULL) {
		err = errno;
		@@ -487,6 +488,16 @@ int llvm__compile_bpf(const char path, void *p_obj_buf,
		(path[0] == '-') ? path : abspath);

		pr_debug("llvm compiling command template: %s\n", template);

		if (asprintf(&command_echo, "echo -n \"%s\"", template) < 0)
		goto errout;

		err = read_from_pipe(command_echo, (void **) &command_out, NULL);
		if (err)
		goto errout;

		pr_debug("llvm compiling command : %s\n", command_out);

		err = read_from_pipe(template, &obj_buf, &obj_buf_sz);
		if (err) {
		pr_err("ERROR:\tunable to compile %s\n", path);
		@@ -497,6 +508,8 @@ int llvm__compile_bpf(const char path, void *p_obj_buf,
		goto errout;
		}

		free(command_echo);
		free(command_out);
		free(kbuild_dir);
		free(kbuild_include_opts);

		@@ -509,6 +522,7 @@ int llvm__compile_bpf(const char path, void *p_obj_buf,
		*p_obj_buf_sz = obj_buf_sz;
		return 0;
		errout:
		free(command_echo);
		free(kbuild_dir);
		free(kbuild_include_opts);
		free(obj_buf);