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