LXR linux/tools/perf/util/usage.c

   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
  15static __noreturn void usage_builtin(const char *err)
  16{
  17        fprintf(stderr, "\n Usage: %s\n", err);
  18        exit(129);
  19}
  20
  21/* If we are in a dlopen()ed .so write to a global variable would segfault
  22 * (ugh), so keep things static. */
  23static void (*usage_routine)(const char *err) __noreturn = usage_builtin;
  24
  25void usage(const char *err)
  26{
  27        usage_routine(err);
  28}
  29