kern_dtrace.c (179811) | kern_dtrace.c (211613) |
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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 |
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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 |
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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); |