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 "debug.h"
  12
  13static __noreturn void usage_builtin(const char *err)
  14{
  15        fprintf(stderr, "\n Usage: %s\n", err);
  16        exit(129);
  17}
  18
  19/* If we are in a dlopen()ed .so write to a global variable would segfault
  20 * (ugh), so keep things static. */
  21static void (*usage_routine)(const char *err) __noreturn = usage_builtin;
  22
  23void usage(const char *err)
  24{
  25        usage_routine(err);
  26}
  27