projects / ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 9dad1eb8 PMF |
1 | /* |
| 2 | * LTT core in-kernel infrastructure. | |
| 3 | * | |
| 4 | * Copyright 2006 - Mathieu Desnoyers mathieu.desnoyers@polymtl.ca | |
| 5 | * | |
| 8fc2d8db PMF |
6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * This library is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with this library; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 9dad1eb8 PMF |
19 | */ |
| 20 | ||
| b6bf28ec PMF |
21 | //ust// #include <linux/ltt-core.h> |
| 22 | //ust// #include <linux/percpu.h> | |
| 23 | //ust// #include <linux/module.h> | |
| 24 | //ust// #include <linux/debugfs.h> | |
| fbca6b62 | 25 | #include <ust/kernelcompat.h> |
| b6bf28ec | 26 | #include "tracercore.h" |
| 9dad1eb8 PMF |
27 | |
| 28 | /* Traces structures */ | |
| 29 | struct ltt_traces ltt_traces = { | |
| 30 | .setup_head = LIST_HEAD_INIT(ltt_traces.setup_head), | |
| 31 | .head = LIST_HEAD_INIT(ltt_traces.head), | |
| 32 | }; | |
| b6bf28ec | 33 | //ust// EXPORT_SYMBOL(ltt_traces); |
| 9dad1eb8 PMF |
34 | |
| 35 | /* Traces list writer locking */ | |
| 36 | static DEFINE_MUTEX(ltt_traces_mutex); | |
| 37 | ||
| 38 | /* dentry of ltt's root dir */ | |
| b6bf28ec PMF |
39 | //ust// static struct dentry *ltt_root_dentry; |
| 40 | //ust// struct dentry *get_ltt_root(void) | |
| 41 | //ust// { | |
| 42 | //ust// if (!ltt_root_dentry) { | |
| 43 | //ust// ltt_root_dentry = debugfs_create_dir(LTT_ROOT, NULL); | |
| 44 | //ust// if (!ltt_root_dentry) | |
| 45 | //ust// printk(KERN_ERR "LTT : create ltt root dir failed\n"); | |
| 46 | //ust// } | |
| 47 | //ust// return ltt_root_dentry; | |
| 48 | //ust// } | |
| 49 | //ust// EXPORT_SYMBOL_GPL(get_ltt_root); | |
| 9dad1eb8 PMF |
50 | |
| 51 | void ltt_lock_traces(void) | |
| 52 | { | |
| 53 | mutex_lock(<t_traces_mutex); | |
| 54 | } | |
| b6bf28ec | 55 | //ust// EXPORT_SYMBOL_GPL(ltt_lock_traces); |
| 9dad1eb8 PMF |
56 | |
| 57 | void ltt_unlock_traces(void) | |
| 58 | { | |
| 59 | mutex_unlock(<t_traces_mutex); | |
| 60 | } | |
| b6bf28ec | 61 | //ust// EXPORT_SYMBOL_GPL(ltt_unlock_traces); |
| 9dad1eb8 | 62 | |
| b6bf28ec PMF |
63 | //ust// DEFINE_PER_CPU(unsigned int, ltt_nesting); |
| 64 | //ust// EXPORT_PER_CPU_SYMBOL(ltt_nesting); | |
| bb07823d | 65 | unsigned int ltt_nesting; |
| 9dad1eb8 PMF |
66 | |
| 67 | int ltt_run_filter_default(void *trace, uint16_t eID) | |
| 68 | { | |
| 69 | return 1; | |
| 70 | } | |
| 71 | ||
| 72 | /* This function pointer is protected by a trace activation check */ | |
| 73 | ltt_run_filter_functor ltt_run_filter = ltt_run_filter_default; | |
| b6bf28ec | 74 | //ust// EXPORT_SYMBOL_GPL(ltt_run_filter); |
| 9dad1eb8 PMF |
75 | |
| 76 | void ltt_filter_register(ltt_run_filter_functor func) | |
| 77 | { | |
| 78 | ltt_run_filter = func; | |
| 79 | } | |
| b6bf28ec | 80 | //ust// EXPORT_SYMBOL_GPL(ltt_filter_register); |
| 9dad1eb8 PMF |
81 | |
| 82 | void ltt_filter_unregister(void) | |
| 83 | { | |
| 84 | ltt_run_filter = ltt_run_filter_default; | |
| 85 | } | |
| b6bf28ec | 86 | //ust// EXPORT_SYMBOL_GPL(ltt_filter_unregister); |