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
  13 static __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. */
  21 static void (*usage_routine)(const char *err) __noreturn = usage_builtin;
  22
  23 void usage(const char *err)
  24 {
  25         usage_routine(err);
  26 }