/* $NetBSD: dtrace_bsd.h,v 1.8 2014/10/18 08:33:29 snj Exp $ */ /*- * Copyright (c) 2007-2008 John Birrell (jb@freebsd.org) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/sys/dtrace_bsd.h,v 1.3.2.1 2009/08/03 08:13:06 kensmith Exp $ * * This file contains BSD shims for Sun's DTrace code. */ #ifndef _SYS_DTRACE_BSD_H #define _SYS_DTRACE_BSD_H #if defined(_KERNEL_OPT) #include "opt_dtrace.h" #endif #include #include #include #include #include /* Forward definitions: */ struct mbuf; struct trapframe; struct lwp; struct vattr; struct vnode; struct ucred; /* * Cyclic clock function type definition used to hook the cyclic * subsystem into the appropriate timer interrupt. */ typedef void (*cyclic_clock_func_t)(struct clockframe *); extern cyclic_clock_func_t cyclic_clock_func[]; /* * The dtrace module handles traps that occur during a DTrace probe. * This type definition is used in the trap handler to provide a * hook for the dtrace module to register its handler with. */ typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int); int dtrace_trap(struct trapframe *, u_int); extern dtrace_trap_func_t dtrace_trap_func; /* Used by the machine dependent trap() code. */ typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t); typedef void (*dtrace_doubletrap_func_t)(void); /* Global variables in trap.c */ extern dtrace_invop_func_t dtrace_invop_func; extern dtrace_doubletrap_func_t dtrace_doubletrap_func; /* Virtual time hook function type. */ typedef void (*dtrace_vtime_switch_func_t)(struct lwp *); extern int dtrace_vtime_active; extern dtrace_vtime_switch_func_t dtrace_vtime_switch_func; /* The fasttrap module hooks into the fork, exit and exit. */ typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *); typedef void (*dtrace_execexit_func_t)(struct proc *); /* Global variable in kern_fork.c */ extern dtrace_fork_func_t dtrace_fasttrap_fork; /* Global variable in kern_exec.c */ extern dtrace_execexit_func_t dtrace_fasttrap_exec; /* Global variable in kern_exit.c */ extern dtrace_execexit_func_t dtrace_fasttrap_exit; /* The dtmalloc provider hooks into malloc. */ typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4); extern dtrace_malloc_probe_func_t dtrace_malloc_probe; /* dtnfsclient NFSv3 access cache provider hooks. */ typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t, struct vnode *); extern dtrace_nfsclient_accesscache_flush_probe_func_t dtrace_nfsclient_accesscache_flush_done_probe; typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t, struct vnode *, uid_t, uint32_t); extern dtrace_nfsclient_accesscache_get_probe_func_t dtrace_nfsclient_accesscache_get_hit_probe, dtrace_nfsclient_accesscache_get_miss_probe; typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t, struct vnode *, uid_t, uint32_t, int); extern dtrace_nfsclient_accesscache_load_probe_func_t dtrace_nfsclient_accesscache_load_done_probe; /* dtnfsclient NFSv[23] attribute cache provider hooks. */ typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t, struct vnode *); extern dtrace_nfsclient_attrcache_flush_probe_func_t dtrace_nfsclient_attrcache_flush_done_probe; typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t, struct vnode *, struct vattr *); extern dtrace_nfsclient_attrcache_get_hit_probe_func_t dtrace_nfsclient_attrcache_get_hit_probe; typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t, struct vnode *); extern dtrace_nfsclient_attrcache_get_miss_probe_func_t dtrace_nfsclient_attrcache_get_miss_probe; typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t, struct vnode *, struct vattr *, int); extern dtrace_nfsclient_attrcache_load_probe_func_t dtrace_nfsclient_attrcache_load_done_probe; /* dtnfsclient NFSv[23] RPC provider hooks. */ typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t, struct vnode *, struct mbuf *, struct ucred *, int); extern dtrace_nfsclient_nfs23_start_probe_func_t dtrace_nfsclient_nfs23_start_probe; typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t, struct vnode *, struct mbuf *, struct ucred *, int, int); extern dtrace_nfsclient_nfs23_done_probe_func_t dtrace_nfsclient_nfs23_done_probe; /* * OpenSolaris compatible time functions returning nanoseconds. * On OpenSolaris these return hrtime_t which we define as uint64_t. */ uint64_t dtrace_gethrtime(void); uint64_t dtrace_gethrestime(void); /* sizes based on DTrace structure requirements */ #define KDTRACE_PROC_SIZE 64 #define KDTRACE_PROC_ZERO 8 #define KDTRACE_THREAD_SIZE 256 #define KDTRACE_THREAD_ZERO 64 /* * Functions for managing the opaque DTrace memory areas for * processes and lwps. */ static inline size_t kdtrace_proc_size(void); static inline void kdtrace_proc_ctor(void *, struct proc *); static inline void kdtrace_proc_dtor(void *, struct proc *); static inline size_t kdtrace_thread_size(void); static inline void kdtrace_thread_ctor(void *, struct lwp *); static inline void kdtrace_thread_dtor(void *, struct lwp *); /* Return the DTrace process data size compiled in the kernel hooks. */ static inline size_t kdtrace_proc_size(void) { return KDTRACE_PROC_SIZE; } /* Return the DTrace thread data size compiled in the kernel hooks. */ static inline size_t kdtrace_thread_size(void) { return KDTRACE_THREAD_SIZE; } static inline void kdtrace_proc_ctor(void *arg, struct proc *p) { #ifdef KDTRACE_HOOKS p->p_dtrace = kmem_zalloc(KDTRACE_PROC_SIZE, KM_SLEEP); #endif } static inline void kdtrace_proc_dtor(void *arg, struct proc *p) { #ifdef KDTRACE_HOOKS if (p->p_dtrace != NULL) { kmem_free(p->p_dtrace, KDTRACE_PROC_SIZE); p->p_dtrace = NULL; } #endif } static inline void kdtrace_thread_ctor(void *arg, struct lwp *l) { #ifdef KDTRACE_HOOKS l->l_dtrace = kmem_zalloc(KDTRACE_THREAD_SIZE, KM_SLEEP); #endif } static inline void kdtrace_thread_dtor(void *arg, struct lwp *l) { #ifdef KDTRACE_HOOKS if (l->l_dtrace != NULL) { kmem_free(l->l_dtrace, KDTRACE_THREAD_SIZE); l->l_dtrace = NULL; } #endif } #endif /* _SYS_DTRACE_BSD_H */