Deleted Added
sdiff udiff text old ( 179811 ) new ( 211613 )
full compact
kern_dtrace.c (179811) kern_dtrace.c (211613)
1/*-
2 * Copyright (c) 2007-2008 John Birrell <jb@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 11 unchanged lines hidden (view full) ---

20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2007-2008 John Birrell <jb@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 11 unchanged lines hidden (view full) ---

20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/kern/kern_dtrace.c 179811 2008-06-16 04:44:29Z jb $");
28__FBSDID("$FreeBSD: head/sys/kern/kern_dtrace.c 211613 2010-08-22 11:08:18Z rpaulo $");
29
30#include "opt_kdb.h"
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/eventhandler.h>
35#include <sys/kdb.h>
36#include <sys/kernel.h>

--- 7 unchanged lines hidden (view full) ---

44#define KDTRACE_THREAD_ZERO 64
45
46MALLOC_DEFINE(M_KDTRACE, "kdtrace", "DTrace hooks");
47
48/* Return the DTrace process data size compiled in the kernel hooks. */
49size_t
50kdtrace_proc_size()
51{
29
30#include "opt_kdb.h"
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/eventhandler.h>
35#include <sys/kdb.h>
36#include <sys/kernel.h>

--- 7 unchanged lines hidden (view full) ---

44#define KDTRACE_THREAD_ZERO 64
45
46MALLOC_DEFINE(M_KDTRACE, "kdtrace", "DTrace hooks");
47
48/* Return the DTrace process data size compiled in the kernel hooks. */
49size_t
50kdtrace_proc_size()
51{
52 return(KDTRACE_PROC_SIZE);
52
53 return (KDTRACE_PROC_SIZE);
53}
54
55static void
56kdtrace_proc_ctor(void *arg __unused, struct proc *p)
57{
58 p->p_dtrace = malloc(KDTRACE_PROC_SIZE, M_KDTRACE, M_WAITOK);
59
60 bzero(p->p_dtrace, KDTRACE_PROC_ZERO);
61}
62
63static void
64kdtrace_proc_dtor(void *arg __unused, struct proc *p)
65{
54}
55
56static void
57kdtrace_proc_ctor(void *arg __unused, struct proc *p)
58{
59 p->p_dtrace = malloc(KDTRACE_PROC_SIZE, M_KDTRACE, M_WAITOK);
60
61 bzero(p->p_dtrace, KDTRACE_PROC_ZERO);
62}
63
64static void
65kdtrace_proc_dtor(void *arg __unused, struct proc *p)
66{
67
66 if (p->p_dtrace != NULL) {
67 free(p->p_dtrace, M_KDTRACE);
68 p->p_dtrace = NULL;
69 }
70}
71
72/* Return the DTrace thread data size compiled in the kernel hooks. */
73size_t
74kdtrace_thread_size()
75{
68 if (p->p_dtrace != NULL) {
69 free(p->p_dtrace, M_KDTRACE);
70 p->p_dtrace = NULL;
71 }
72}
73
74/* Return the DTrace thread data size compiled in the kernel hooks. */
75size_t
76kdtrace_thread_size()
77{
76 return(KDTRACE_THREAD_SIZE);
78 return (KDTRACE_THREAD_SIZE);
77}
78
79static void
80kdtrace_thread_ctor(void *arg __unused, struct thread *td)
81{
82 td->td_dtrace = malloc(KDTRACE_THREAD_SIZE, M_KDTRACE, M_WAITOK);
83
84 bzero(td->td_dtrace, KDTRACE_THREAD_ZERO);
85}
86
87static void
88kdtrace_thread_dtor(void *arg __unused, struct thread *td)
89{
79}
80
81static void
82kdtrace_thread_ctor(void *arg __unused, struct thread *td)
83{
84 td->td_dtrace = malloc(KDTRACE_THREAD_SIZE, M_KDTRACE, M_WAITOK);
85
86 bzero(td->td_dtrace, KDTRACE_THREAD_ZERO);
87}
88
89static void
90kdtrace_thread_dtor(void *arg __unused, struct thread *td)
91{
92
90 if (td->td_dtrace != NULL) {
91 free(td->td_dtrace, M_KDTRACE);
92 td->td_dtrace = NULL;
93 }
94}
95
96/*
97 * Initialise the kernel DTrace hooks.
98 */
99static void
100init_dtrace(void *dummy __unused)
101{
93 if (td->td_dtrace != NULL) {
94 free(td->td_dtrace, M_KDTRACE);
95 td->td_dtrace = NULL;
96 }
97}
98
99/*
100 * Initialise the kernel DTrace hooks.
101 */
102static void
103init_dtrace(void *dummy __unused)
104{
102 EVENTHANDLER_REGISTER(process_ctor, kdtrace_proc_ctor, NULL, EVENTHANDLER_PRI_ANY);
103 EVENTHANDLER_REGISTER(process_dtor, kdtrace_proc_dtor, NULL, EVENTHANDLER_PRI_ANY);
104 EVENTHANDLER_REGISTER(thread_ctor, kdtrace_thread_ctor, NULL, EVENTHANDLER_PRI_ANY);
105 EVENTHANDLER_REGISTER(thread_dtor, kdtrace_thread_dtor, NULL, EVENTHANDLER_PRI_ANY);
105
106 EVENTHANDLER_REGISTER(process_ctor, kdtrace_proc_ctor, NULL,
107 EVENTHANDLER_PRI_ANY);
108 EVENTHANDLER_REGISTER(process_dtor, kdtrace_proc_dtor, NULL,
109 EVENTHANDLER_PRI_ANY);
110 EVENTHANDLER_REGISTER(thread_ctor, kdtrace_thread_ctor, NULL,
111 EVENTHANDLER_PRI_ANY);
112 EVENTHANDLER_REGISTER(thread_dtor, kdtrace_thread_dtor, NULL,
113 EVENTHANDLER_PRI_ANY);
106}
107
108SYSINIT(kdtrace, SI_SUB_KDTRACE, SI_ORDER_FIRST, init_dtrace, NULL);
114}
115
116SYSINIT(kdtrace, SI_SUB_KDTRACE, SI_ORDER_FIRST, init_dtrace, NULL);