| Daniel Bristot de Oliveira | cc8e71c | 2022-07-29 11:38:44 +0200 | [diff] [blame] | 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) |
