Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
3 *
4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation;
8 * version 2.1 of the License (not later!)
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, see <http://www.gnu.org/licenses>
17 *
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19 */
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23
24#include "event-parse.h"
25#include "trace-seq.h"
26
27static int call_site_handler(struct trace_seq *s, struct tep_record *record,
28 struct tep_event *event, void *context)
29{
30 struct tep_format_field *field;
31 unsigned long long val, addr;
32 void *data = record->data;
33 const char *func;
34
35 field = tep_find_field(event, "call_site");
36 if (!field)
37 return 1;
38
39 if (tep_read_number_field(field, data, &val))
40 return 1;
41
42 func = tep_find_function(event->tep, val);
43 if (!func)
44 return 1;
45
46 addr = tep_find_function_address(event->tep, val);
47
48 trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr));
49 return 1;
50}
51
52int TEP_PLUGIN_LOADER(struct tep_handle *tep)
53{
54 tep_register_event_handler(tep, -1, "kmem", "kfree",
55 call_site_handler, NULL);
56
57 tep_register_event_handler(tep, -1, "kmem", "kmalloc",
58 call_site_handler, NULL);
59
60 tep_register_event_handler(tep, -1, "kmem", "kmalloc_node",
61 call_site_handler, NULL);
62
63 tep_register_event_handler(tep, -1, "kmem", "kmem_cache_alloc",
64 call_site_handler, NULL);
65
66 tep_register_event_handler(tep, -1, "kmem",
67 "kmem_cache_alloc_node",
68 call_site_handler, NULL);
69
70 tep_register_event_handler(tep, -1, "kmem", "kmem_cache_free",
71 call_site_handler, NULL);
72 return 0;
73}
74
75void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
76{
77 tep_unregister_event_handler(tep, -1, "kmem", "kfree",
78 call_site_handler, NULL);
79
80 tep_unregister_event_handler(tep, -1, "kmem", "kmalloc",
81 call_site_handler, NULL);
82
83 tep_unregister_event_handler(tep, -1, "kmem", "kmalloc_node",
84 call_site_handler, NULL);
85
86 tep_unregister_event_handler(tep, -1, "kmem", "kmem_cache_alloc",
87 call_site_handler, NULL);
88
89 tep_unregister_event_handler(tep, -1, "kmem",
90 "kmem_cache_alloc_node",
91 call_site_handler, NULL);
92
93 tep_unregister_event_handler(tep, -1, "kmem", "kmem_cache_free",
94 call_site_handler, NULL);
95}