include/rv/instrumentation.h

   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  * Helper functions to facilitate the instrumentation of auto-generated
   6  * RV monitors create by dot2k.
   7  *
   8  * The dot2k tool is available at tools/verification/dot2/
   9  */
  10
  11 #include <linux/ftrace.h>
  12
  13 /*
  14  * rv_attach_trace_probe - check and attach a handler function to a tracepoint
  15  */
  16 #define rv_attach_trace_probe(monitor, tp, rv_handler)                                  \
  17         do {                                                                            \
  18                 check_trace_callback_type_##tp(rv_handler);                             \
  19                 WARN_ONCE(register_trace_##tp(rv_handler, NULL),                        \
  20                                 "fail attaching " #monitor " " #tp "handler");          \
  21         } while (0)
  22
  23 /*
  24  * rv_detach_trace_probe - detach a handler function to a tracepoint
  25  */
  26 #define rv_detach_trace_probe(monitor, tp, rv_handler)                                  \
  27         do {                                                                            \
  28                 unregister_trace_##tp(rv_handler, NULL);                                \
  29         } while (0)