| 1 | /* probe.c |
| 2 | * |
| 3 | * Loads a function at a marker call site. |
| 4 | * |
| 5 | * (C) Copyright 2006 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> |
| 6 | * |
| 7 | * This file is released under the GPLv2. |
| 8 | * See the file COPYING for more details. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/marker.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kallsyms.h> |
| 14 | |
| 15 | /* function to install */ |
| 16 | asmlinkage void do_mark1(const char *format, int value) |
| 17 | { |
| 18 | printk("value is %d\n", value); |
| 19 | } |
| 20 | |
| 21 | int init_module(void) |
| 22 | { |
| 23 | return marker_set_probe("subsys_mark1", (marker_probe_func*)do_mark1, |
| 24 | MARKER_CALL); |
| 25 | } |
| 26 | |
| 27 | void cleanup_module(void) |
| 28 | { |
| 29 | marker_disable_probe("subsys_mark1", (marker_probe_func*)do_mark1, |
| 30 | MARKER_CALL); |
| 31 | } |
| 32 | |
| 33 | MODULE_LICENSE("GPL"); |
| 34 | MODULE_AUTHOR("Mathieu Desnoyers"); |
| 35 | MODULE_DESCRIPTION("Probe"); |
| 36 | |