1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* 1 /*
3 * usage.c 2 * usage.c
4 * 3 *
5 * Various reporting routines. 4 * Various reporting routines.
6 * Originally copied from GIT source. 5 * Originally copied from GIT source.
7 * 6 *
8 * Copyright (C) Linus Torvalds, 2005 7 * Copyright (C) Linus Torvalds, 2005
9 */ 8 */
10 #include "util.h" 9 #include "util.h"
11 #include <stdio.h> !! 10 #include "debug.h"
12 #include <stdlib.h> <<
13 #include <linux/compiler.h> <<
14 <<
15 const char perf_usage_string[] = <<
16 "perf [--version] [--help] [OPTIONS] C <<
17 <<
18 const char perf_more_info_string[] = <<
19 "See 'perf help COMMAND' for more info <<
20 11
21 static __noreturn void usage_builtin(const cha 12 static __noreturn void usage_builtin(const char *err)
22 { 13 {
23 fprintf(stderr, "\n Usage: %s\n", err) 14 fprintf(stderr, "\n Usage: %s\n", err);
24 exit(129); 15 exit(129);
25 } 16 }
26 17
27 /* If we are in a dlopen()ed .so write to a gl 18 /* If we are in a dlopen()ed .so write to a global variable would segfault
28 * (ugh), so keep things static. */ 19 * (ugh), so keep things static. */
29 static void (*usage_routine)(const char *err) 20 static void (*usage_routine)(const char *err) __noreturn = usage_builtin;
30 21
31 void usage(const char *err) 22 void usage(const char *err)
32 { 23 {
33 usage_routine(err); 24 usage_routine(err);
34 } 25 }
35 26
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