kernel/trace/rv/reactor_panic.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org>
   4  *
   5  * Panic RV reactor:
   6  *   Prints the exception msg to the kernel message log and panic().
   7  */
   8
   9 #include <linux/ftrace.h>
  10 #include <linux/tracepoint.h>
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/init.h>
  14 #include <linux/rv.h>
  15
  16 static void rv_panic_reaction(char *msg)
  17 {
  18         panic(msg);
  19 }
  20
  21 static struct rv_reactor rv_panic = {
  22         .name = "panic",
  23         .description = "panic the system if an exception is found.",
  24         .react = rv_panic_reaction
  25 };
  26
  27 static int __init register_react_panic(void)
  28 {
  29         rv_register_reactor(&rv_panic);
  30         return 0;
  31 }
  32
  33 static void __exit unregister_react_panic(void)
  34 {
  35         rv_unregister_reactor(&rv_panic);
  36 }
  37
  38 module_init(register_react_panic);
  39 module_exit(unregister_react_panic);
  40
  41 MODULE_AUTHOR("Daniel Bristot de Oliveira");
  42 MODULE_DESCRIPTION("panic rv reactor: panic if an exception is found.");