Date: Wed, 5 Nov 2008 19:39:11 +0000 (UTC) From: Craig Rodrigues <rodrigc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r184698 - in head/sys: cddl/compat/opensolaris/kern cddl/compat/opensolaris/sys cddl/contrib/opensolaris/uts/common/dtrace cddl/dev/dtrace cddl/dev/systrace sys Message-ID: <200811051939.mA5JdBCK035580@svn.freebsd.org>
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Author: rodrigc Date: Wed Nov 5 19:39:11 2008 New Revision: 184698 URL: http://svn.freebsd.org/changeset/base/184698 Log: Merge latest DTrace changes from Perforce. Modified: head/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c head/sys/cddl/compat/opensolaris/sys/types.h head/sys/cddl/compat/opensolaris/sys/uio.h head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c head/sys/cddl/dev/dtrace/dtrace_ioctl.c head/sys/cddl/dev/dtrace/dtrace_load.c head/sys/cddl/dev/dtrace/dtrace_unload.c head/sys/cddl/dev/systrace/systrace.c head/sys/sys/sysent.h Modified: head/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c ============================================================================== --- head/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c Wed Nov 5 19:39:11 2008 (r184698) @@ -40,6 +40,8 @@ __FBSDID("$FreeBSD$"); #include <vm/vm_kern.h> #include <vm/vm_map.h> +#define KMEM_DEBUG + #ifdef KMEM_DEBUG #include <sys/queue.h> #include <sys/stack.h> @@ -93,6 +95,10 @@ void zfs_kmem_free(void *buf, size_t size __unused) { #ifdef KMEM_DEBUG + if (buf == NULL) { + printf("%s: attempt to free NULL\n",__func__); + return; + } struct kmem_item *i; buf = (u_char *)buf - sizeof(struct kmem_item); @@ -236,7 +242,8 @@ calloc(size_t n, size_t s) } #ifdef KMEM_DEBUG -static void +void kmem_show(void *); +void kmem_show(void *dummy __unused) { struct kmem_item *i; @@ -248,12 +255,10 @@ kmem_show(void *dummy __unused) printf("KMEM_DEBUG: Leaked elements:\n\n"); LIST_FOREACH(i, &kmem_items, next) { printf("address=%p\n", i); - stack_print(&i->stack); - printf("\n"); } } mtx_unlock(&kmem_items_mtx); } -SYSUNINIT(sol_kmem, SI_SUB_DRIVERS, SI_ORDER_FIRST, kmem_show, NULL); +SYSUNINIT(sol_kmem, SI_SUB_CPU, SI_ORDER_FIRST, kmem_show, NULL); #endif /* KMEM_DEBUG */ Modified: head/sys/cddl/compat/opensolaris/sys/types.h ============================================================================== --- head/sys/cddl/compat/opensolaris/sys/types.h Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/compat/opensolaris/sys/types.h Wed Nov 5 19:39:11 2008 (r184698) @@ -64,12 +64,13 @@ typedef void pathname_t; typedef int64_t rlim64_t; #else - +#ifdef NEED_SOLARIS_BOOLEAN #if defined(__XOPEN_OR_POSIX) typedef enum { _B_FALSE, _B_TRUE } boolean_t; #else typedef enum { B_FALSE, B_TRUE } boolean_t; #endif /* defined(__XOPEN_OR_POSIX) */ +#endif typedef longlong_t offset_t; typedef u_longlong_t u_offset_t; Modified: head/sys/cddl/compat/opensolaris/sys/uio.h ============================================================================== --- head/sys/cddl/compat/opensolaris/sys/uio.h Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/compat/opensolaris/sys/uio.h Wed Nov 5 19:39:11 2008 (r184698) @@ -51,6 +51,7 @@ typedef struct iovec iovec_t; #define uio_loffset uio_offset +#ifdef BUILDING_ZFS static __inline int zfs_uiomove(void *cp, size_t n, enum uio_rw dir, uio_t *uio) { @@ -59,5 +60,6 @@ zfs_uiomove(void *cp, size_t n, enum uio return (uiomove(cp, (int)n, uio)); } #define uiomove(cp, n, dir, uio) zfs_uiomove((cp), (n), (dir), (uio)) +#endif #endif /* !_OPENSOLARIS_SYS_UIO_H_ */ Modified: head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c Wed Nov 5 19:39:11 2008 (r184698) @@ -3007,6 +3007,9 @@ dtrace_dif_variable(dtrace_mstate_t *mst case DIF_VAR_EXECARGS: { struct pargs *p_args = curthread->td_proc->p_args; + if (p_args == NULL) + return(0); + return (dtrace_dif_varstrz( (uintptr_t) p_args->ar_args, p_args->ar_length, state, mstate)); } @@ -10598,7 +10601,6 @@ dtrace_buffer_alloc(dtrace_buffer_t *buf /* * If there is already a buffer allocated for this CPU, it * is only possible that this is a DR event. In this case, - * the buffer size must match our specified size. */ if (buf->dtb_tomax != NULL) { ASSERT(buf->dtb_size == size); @@ -12815,11 +12817,7 @@ dtrace_state_create(struct cdev *dev) state = ddi_get_soft_state(dtrace_softstate, minor); #else if (dev != NULL) { - /* - * Disable this until we have the ability to set user - * credentials for DTrace. - * cr = dev->si_cred; - */ + cr = dev->si_cred; m = dev2unit(dev); } @@ -15241,6 +15239,15 @@ dtrace_attach(dev_info_t *devi, ddi_atta } #endif +#if !defined(sun) +#if __FreeBSD_version >= 800039 +static void +dtrace_dtr(void *data __unused) +{ +} +#endif +#endif + /*ARGSUSED*/ static int #if defined(sun) @@ -15266,6 +15273,7 @@ dtrace_open(struct cdev *dev, int oflags #else cred_t *cred_p = NULL; +#if __FreeBSD_version < 800039 /* * The first minor device is the one that is cloned so there is * nothing more to do here. @@ -15281,6 +15289,7 @@ dtrace_open(struct cdev *dev, int oflags */ if (dev->si_drv1 != NULL) return (EBUSY); +#endif cred_p = dev->si_cred; #endif @@ -15292,9 +15301,11 @@ dtrace_open(struct cdev *dev, int oflags dtrace_cred2priv(cred_p, &priv, &uid, &zoneid); if (priv == DTRACE_PRIV_NONE) { #if !defined(sun) +#if __FreeBSD_version < 800039 /* Destroy the cloned device. */ destroy_dev(dev); #endif +#endif return (EACCES); } @@ -15326,7 +15337,11 @@ dtrace_open(struct cdev *dev, int oflags state = dtrace_state_create(devp, cred_p); #else state = dtrace_state_create(dev); +#if __FreeBSD_version < 800039 dev->si_drv1 = state; +#else + devfs_set_cdevpriv(state, dtrace_dtr); +#endif #endif mutex_exit(&cpu_lock); @@ -15340,9 +15355,11 @@ dtrace_open(struct cdev *dev, int oflags #endif mutex_exit(&dtrace_lock); #if !defined(sun) +#if __FreeBSD_version < 800039 /* Destroy the cloned device. */ destroy_dev(dev); #endif +#endif return (EAGAIN); } @@ -15368,11 +15385,16 @@ dtrace_close(struct cdev *dev, int flags state = ddi_get_soft_state(dtrace_softstate, minor); #else +#if __FreeBSD_version < 800039 dtrace_state_t *state = dev->si_drv1; /* Check if this is not a cloned device. */ if (dev2unit(dev) == 0) return (0); +#else + dtrace_state_t *state; + devfs_get_cdevpriv((void **) &state); +#endif #endif @@ -15392,7 +15414,11 @@ dtrace_close(struct cdev *dev, int flags #if !defined(sun) kmem_free(state, 0); +#if __FreeBSD_version < 800039 dev->si_drv1 = NULL; +#else + devfs_clear_cdevpriv(); +#endif #endif } @@ -15407,8 +15433,10 @@ dtrace_close(struct cdev *dev, int flags mutex_exit(&dtrace_lock); mutex_exit(&cpu_lock); +#if __FreeBSD_version < 800039 /* Schedule this cloned device to be destroyed. */ destroy_dev_sched(dev); +#endif return (0); } @@ -16442,16 +16470,20 @@ _fini(void) static d_ioctl_t dtrace_ioctl; static void dtrace_load(void *); static int dtrace_unload(void); +#if __FreeBSD_version < 800039 static void dtrace_clone(void *, struct ucred *, char *, int , struct cdev **); static struct clonedevs *dtrace_clones; /* Ptr to the array of cloned devices. */ static eventhandler_tag eh_tag; /* Event handler tag. */ +#else +static struct cdev *dtrace_dev; +#endif void dtrace_invop_init(void); void dtrace_invop_uninit(void); static struct cdevsw dtrace_cdevsw = { .d_version = D_VERSION, - .d_flags = D_NEEDMINOR, + .d_flags = D_TRACKCLOSE | D_NEEDMINOR, .d_close = dtrace_close, .d_ioctl = dtrace_ioctl, .d_open = dtrace_open, @@ -16459,7 +16491,9 @@ static struct cdevsw dtrace_cdevsw = { }; #include <dtrace_anon.c> +#if __FreeBSD_version < 800039 #include <dtrace_clone.c> +#endif #include <dtrace_ioctl.c> #include <dtrace_load.c> #include <dtrace_modevent.c> Modified: head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c Wed Nov 5 19:39:11 2008 (r184698) @@ -2044,13 +2044,6 @@ err: tp->ftt_proc->ftpc_acount != 0) break; - /* - * The count of active providers can only be - * decremented (i.e. to zero) during exec, exit, and - * removal of a meta provider so it should be - * impossible to drop the count during this operation(). - */ - ASSERT(tp->ftt_proc->ftpc_acount != 0); tp = tp->ftt_next; } Modified: head/sys/cddl/dev/dtrace/dtrace_ioctl.c ============================================================================== --- head/sys/cddl/dev/dtrace/dtrace_ioctl.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/dev/dtrace/dtrace_ioctl.c Wed Nov 5 19:39:11 2008 (r184698) @@ -32,7 +32,12 @@ static int dtrace_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags __unused, struct thread *td) { +#if __FreeBSD_version < 800039 dtrace_state_t *state = dev->si_drv1; +#else + dtrace_state_t *state; + devfs_get_cdevpriv((void **) &state); +#endif int error = 0; if (state == NULL) return (EINVAL); Modified: head/sys/cddl/dev/dtrace/dtrace_load.c ============================================================================== --- head/sys/cddl/dev/dtrace/dtrace_load.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/dev/dtrace/dtrace_load.c Wed Nov 5 19:39:11 2008 (r184698) @@ -154,11 +154,15 @@ dtrace_load(void *dummy) mutex_exit(&cpu_lock); +#if __FreeBSD_version < 800039 /* Enable device cloning. */ clone_setup(&dtrace_clones); /* Setup device cloning events. */ eh_tag = EVENTHANDLER_REGISTER(dev_clone, dtrace_clone, 0, 1000); +#else + dtrace_dev = make_dev(&dtrace_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "dtrace/dtrace"); +#endif return; } Modified: head/sys/cddl/dev/dtrace/dtrace_unload.c ============================================================================== --- head/sys/cddl/dev/dtrace/dtrace_unload.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/dev/dtrace/dtrace_unload.c Wed Nov 5 19:39:11 2008 (r184698) @@ -28,6 +28,7 @@ dtrace_unload() dtrace_state_t *state; int error = 0; +#if __FreeBSD_version < 800039 /* * Check if there is still an event handler callback * registered. @@ -40,6 +41,9 @@ dtrace_unload() /* Stop device cloning. */ clone_cleanup(&dtrace_clones); } +#else + destroy_dev(dtrace_dev); +#endif mutex_enter(&dtrace_provider_lock); mutex_enter(&dtrace_lock); Modified: head/sys/cddl/dev/systrace/systrace.c ============================================================================== --- head/sys/cddl/dev/systrace/systrace.c Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/cddl/dev/systrace/systrace.c Wed Nov 5 19:39:11 2008 (r184698) @@ -50,15 +50,41 @@ #include <sys/proc.h> #include <sys/selinfo.h> #include <sys/smp.h> -#include <sys/syscall.h> -#include <sys/sysent.h> #include <sys/sysproto.h> +#include <sys/sysent.h> #include <sys/uio.h> #include <sys/unistd.h> #include <machine/stdarg.h> #include <sys/dtrace.h> +#ifdef LINUX_SYSTRACE +#include <linux.h> +#include <linux_syscall.h> +#include <linux_proto.h> +#include <linux_syscallnames.c> +#include <linux_systrace.c> +extern struct sysent linux_sysent[]; +#define DEVNAME "dtrace/linsystrace" +#define PROVNAME "linsyscall" +#define MAXSYSCALL LINUX_SYS_MAXSYSCALL +#define SYSCALLNAMES linux_syscallnames +#define SYSENT linux_sysent +#else +/* + * The syscall arguments are processed into a DTrace argument array + * using a generated function. See sys/kern/makesyscalls.sh. + */ +#include <sys/syscall.h> +#include <kern/systrace_args.c> +extern const char *syscallnames[]; +#define DEVNAME "dtrace/systrace" +#define PROVNAME "syscall" +#define MAXSYSCALL SYS_MAXSYSCALL +#define SYSCALLNAMES syscallnames +#define SYSENT sysent +#endif + #define SYSTRACE_ARTIFICIAL_FRAMES 1 #define SYSTRACE_SHIFT 16 @@ -67,17 +93,13 @@ #define SYSTRACE_ENTRY(id) ((1 << SYSTRACE_SHIFT) | (id)) #define SYSTRACE_RETURN(id) (id) -#if ((1 << SYSTRACE_SHIFT) <= SYS_MAXSYSCALL) +#if ((1 << SYSTRACE_SHIFT) <= MAXSYSCALL) #error 1 << SYSTRACE_SHIFT must exceed number of system calls #endif -extern char *syscallnames[]; - static d_open_t systrace_open; static int systrace_unload(void); static void systrace_getargdesc(void *, dtrace_id_t, void *, dtrace_argdesc_t *); -static void systrace_args(int, void *, u_int64_t *, int *); -static void systrace_probe(u_int32_t, int, struct sysent *, void *); static void systrace_provide(void *, dtrace_probedesc_t *); static void systrace_destroy(void *, dtrace_id_t, void *); static void systrace_enable(void *, dtrace_id_t, void *); @@ -87,9 +109,18 @@ static void systrace_load(void *); static struct cdevsw systrace_cdevsw = { .d_version = D_VERSION, .d_open = systrace_open, +#ifdef LINUX_SYSTRACE + .d_name = "linsystrace", +#else .d_name = "systrace", +#endif }; +static union { + const char **p_constnames; + char **pp_syscallnames; +} uglyhack = { SYSCALLNAMES }; + static dtrace_pattr_t systrace_attr = { { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN }, @@ -114,12 +145,14 @@ static dtrace_pops_t systrace_pops = { static struct cdev *systrace_cdev; static dtrace_provider_id_t systrace_id; +#if !defined(LINUX_SYSTRACE) /* - * The syscall arguments are processed into a DTrace argument array - * using a generated function. See sys/kern/makesyscalls.sh. + * Probe callback function. + * + * Note: This function is called for _all_ syscalls, regardless of which sysent + * array the syscall comes from. It could be a standard syscall or a + * compat syscall from something like Linux. */ -#include <kern/systrace_args.c> - static void systrace_probe(u_int32_t id, int sysnum, struct sysent *sysent, void *params) { @@ -127,21 +160,20 @@ systrace_probe(u_int32_t id, int sysnum, u_int64_t uargs[8]; /* - * Check if this syscall has a custom argument conversion - * function registered. If so, it is a syscall registered - * by a loaded module. + * Check if this syscall has an argument conversion function + * registered. */ if (sysent->sy_systrace_args_func != NULL) /* * Convert the syscall parameters using the registered * function. */ - (*sysent->sy_systrace_args_func)(params, uargs, &n_args); + (*sysent->sy_systrace_args_func)(sysnum, params, uargs, &n_args); else /* * Use the built-in system call argument conversion * function to translate the syscall structure fields - * into thhe array of 64-bit values that DTrace + * into the array of 64-bit values that DTrace * expects. */ systrace_args(sysnum, params, uargs, &n_args); @@ -149,6 +181,7 @@ systrace_probe(u_int32_t id, int sysnum, /* Process the probe using the converted argments. */ dtrace_probe(id, uargs[0], uargs[1], uargs[2], uargs[3], uargs[4]); } +#endif static void systrace_getargdesc(void *arg, dtrace_id_t id, void *parg, dtrace_argdesc_t *desc) @@ -172,15 +205,15 @@ systrace_provide(void *arg, dtrace_probe if (desc != NULL) return; - for (i = 0; i < SYS_MAXSYSCALL; i++) { + for (i = 0; i < MAXSYSCALL; i++) { if (dtrace_probe_lookup(systrace_id, NULL, - syscallnames[i], "entry") != 0) + uglyhack.pp_syscallnames[i], "entry") != 0) continue; - (void) dtrace_probe_create(systrace_id, NULL, syscallnames[i], + (void) dtrace_probe_create(systrace_id, NULL, uglyhack.pp_syscallnames[i], "entry", SYSTRACE_ARTIFICIAL_FRAMES, (void *)((uintptr_t)SYSTRACE_ENTRY(i))); - (void) dtrace_probe_create(systrace_id, NULL, syscallnames[i], + (void) dtrace_probe_create(systrace_id, NULL, uglyhack.pp_syscallnames[i], "return", SYSTRACE_ARTIFICIAL_FRAMES, (void *)((uintptr_t)SYSTRACE_RETURN(i))); } @@ -209,10 +242,13 @@ systrace_enable(void *arg, dtrace_id_t i { int sysnum = SYSTRACE_SYSNUM((uintptr_t)parg); + if (SYSENT[sysnum].sy_systrace_args_func == NULL) + SYSENT[sysnum].sy_systrace_args_func = systrace_args; + if (SYSTRACE_ISENTRY((uintptr_t)parg)) - sysent[sysnum].sy_entry = id; + SYSENT[sysnum].sy_entry = id; else - sysent[sysnum].sy_return = id; + SYSENT[sysnum].sy_return = id; } static void @@ -220,8 +256,8 @@ systrace_disable(void *arg, dtrace_id_t { int sysnum = SYSTRACE_SYSNUM((uintptr_t)parg); - sysent[sysnum].sy_entry = 0; - sysent[sysnum].sy_return = 0; + SYSENT[sysnum].sy_entry = 0; + SYSENT[sysnum].sy_return = 0; } static void @@ -229,13 +265,15 @@ systrace_load(void *dummy) { /* Create the /dev/dtrace/systrace entry. */ systrace_cdev = make_dev(&systrace_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, - "dtrace/systrace"); + DEVNAME); - if (dtrace_register("syscall", &systrace_attr, DTRACE_PRIV_USER, + if (dtrace_register(PROVNAME, &systrace_attr, DTRACE_PRIV_USER, NULL, &systrace_pops, NULL, &systrace_id) != 0) return; +#if !defined(LINUX_SYSTRACE) systrace_probe_func = systrace_probe; +#endif } @@ -247,7 +285,9 @@ systrace_unload() if ((error = dtrace_unregister(systrace_id)) != 0) return (error); +#if !defined(LINUX_SYSTRACE) systrace_probe_func = NULL; +#endif destroy_dev(systrace_cdev); @@ -286,7 +326,16 @@ systrace_open(struct cdev *dev __unused, SYSINIT(systrace_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, systrace_load, NULL); SYSUNINIT(systrace_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, systrace_unload, NULL); +#ifdef LINUX_SYSTRACE +DEV_MODULE(linsystrace, systrace_modevent, NULL); +MODULE_VERSION(linsystrace, 1); +MODULE_DEPEND(linsystrace, linux, 1, 1, 1); +MODULE_DEPEND(linsystrace, systrace, 1, 1, 1); +MODULE_DEPEND(linsystrace, dtrace, 1, 1, 1); +MODULE_DEPEND(linsystrace, opensolaris, 1, 1, 1); +#else DEV_MODULE(systrace, systrace_modevent, NULL); MODULE_VERSION(systrace, 1); MODULE_DEPEND(systrace, dtrace, 1, 1, 1); MODULE_DEPEND(systrace, opensolaris, 1, 1, 1); +#endif Modified: head/sys/sys/sysent.h ============================================================================== --- head/sys/sys/sysent.h Wed Nov 5 19:35:43 2008 (r184697) +++ head/sys/sys/sysent.h Wed Nov 5 19:39:11 2008 (r184698) @@ -48,7 +48,7 @@ typedef void (*systrace_probe_func_t)(u_ * Used by loaded syscalls to convert arguments to a DTrace array * of 64-bit arguments. */ -typedef void (*systrace_args_func_t)(void *, u_int64_t *, int *); +typedef void (*systrace_args_func_t)(int, void *, u_int64_t *, int *); extern systrace_probe_func_t systrace_probe_func;
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