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) 30