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