/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*-
* @(#)subr_prof.c 8.3 (Berkeley) 9/23/93
*/
+#ifdef GPROF
+#include <kern/mach_header.h>
+#endif
+
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
-#include <sys/proc.h>
+#include <sys/proc_internal.h>
#include <sys/user.h>
#include <machine/spl.h>
+#include <machine/machine_routines.h>
-#include <sys/mount.h>
+#include <sys/mount_internal.h>
+#include <sys/sysproto.h>
+#include <mach/mach_types.h>
+#include <kern/kern_types.h>
#include <kern/cpu_number.h>
+#include <kern/kalloc.h>
#ifdef GPROF
#include <sys/malloc.h>
#include <sys/gmon.h>
-#include <kern/mach_header.h>
-#include <machine/profile.h>
+
+extern int sysctl_doprof(int *, u_int, user_addr_t, size_t *,
+ user_addr_t, size_t newlen);
+extern int sysctl_struct(user_addr_t, size_t *,
+ user_addr_t, size_t, void *, int);
+
+lck_spin_t * mcount_lock;
+lck_grp_t * mcount_lock_grp;
+lck_attr_t * mcount_lock_attr;
/*
* Froms is actually a bunch of unsigned shorts indexing tos
*/
-struct gmonparam _gmonparam = { GMON_PROF_OFF };
+struct gmonparam _gmonparam = { .state = GMON_PROF_OFF };
-kmstartup()
+/*
+ * This code uses 32 bit mach object segment information from the currently
+ * running kernel.
+ */
+void
+kmstartup(void)
{
char *cp;
- u_long fromssize, tossize;
- struct segment_command *sgp;
+ struct segment_command *sgp; /* 32 bit mach object file segment */
struct gmonparam *p = &_gmonparam;
sgp = getsegbyname("__TEXT");
p->lowpc = ROUNDDOWN(p->lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
p->highpc = ROUNDUP(p->highpc, HISTFRACTION * sizeof(HISTCOUNTER));
p->textsize = p->highpc - p->lowpc;
- printf("Profiling kernel, textsize=%d [0x%08x..0x%08x]\n",
+ printf("Profiling kernel, textsize=%lu [0x%016lx..0x%016lx]\n",
p->textsize, p->lowpc, p->highpc);
p->kcountsize = p->textsize / HISTFRACTION;
p->hashfraction = HASHFRACTION;
p->kcount = (u_short *)cp;
cp += p->kcountsize;
p->froms = (u_short *)cp;
+
+ mcount_lock_grp = lck_grp_alloc_init("MCOUNT", LCK_GRP_ATTR_NULL);
+ mcount_lock_attr = lck_attr_alloc_init();
+ mcount_lock = lck_spin_alloc_init(mcount_lock_grp, mcount_lock_attr);
+
}
/*
* Return kernel profiling information.
*/
int
-sysctl_doprof(name, namelen, oldp, oldlenp, newp, newlen)
- int *name;
- u_int namelen;
- void *oldp;
- size_t *oldlenp;
- void *newp;
- size_t newlen;
+sysctl_doprof(int *name, u_int namelen, user_addr_t oldp, size_t *oldlenp,
+ user_addr_t newp, size_t newlen)
{
struct gmonparam *gp = &_gmonparam;
int error;
startprofclock(kernproc);
return (0);
case GPROF_COUNT:
- return (sysctl_struct(oldp, oldlenp, newp, newlen,
- gp->kcount, gp->kcountsize));
+ return (sysctl_struct(oldp, oldlenp, newp, newlen,
+ gp->kcount, gp->kcountsize));
case GPROF_FROMS:
return (sysctl_struct(oldp, oldlenp, newp, newlen,
- gp->froms, gp->fromssize));
+ gp->froms, gp->fromssize));
case GPROF_TOS:
return (sysctl_struct(oldp, oldlenp, newp, newlen,
- gp->tos, gp->tossize));
+ gp->tos, gp->tossize));
case GPROF_GMONPARAM:
return (sysctl_rdstruct(oldp, oldlenp, newp, gp, sizeof *gp));
default:
- return (EOPNOTSUPP);
+ return (ENOTSUP);
}
/* NOTREACHED */
}
*/
void
mcount(
- register u_long frompc,
- register u_long selfpc
+ u_long frompc,
+ u_long selfpc
)
{
unsigned short *frompcindex;
- register struct tostruct *top, *prevtop;
+ struct tostruct *top, *prevtop;
struct gmonparam *p = &_gmonparam;
- register long toindex;
- MCOUNT_INIT;
+ long toindex;
/*
* check that we are profiling
if (p->state != GMON_PROF_ON)
return;
- MCOUNT_ENTER;
+ lck_spin_lock(mcount_lock);
/*
* check that frompcindex is a reasonable pc value.
}
done:
- MCOUNT_EXIT;
+ lck_spin_unlock(mcount_lock);
return;
overflow:
p->state = GMON_PROF_ERROR;
- MCOUNT_EXIT;
+ lck_spin_unlock(mcount_lock);
printf("mcount: tos overflow\n");
return;
}
#endif /* GPROF */
-#if NCPUS > 1
-#define PROFILE_LOCK(x) simple_lock(x)
-#define PROFILE_UNLOCK(x) simple_unlock(x)
-#else
#define PROFILE_LOCK(x)
#define PROFILE_UNLOCK(x)
-#endif
-struct profil_args {
- short *bufbase;
- u_int bufsize;
- u_int pcoffset;
- u_int pcscale;
-};
+static int profil_funneled(struct proc *p, struct profil_args *uap, register_t *retval);
+static int add_profil_funneled(struct proc *p, struct add_profil_args *uap, register_t *retval);
+
+
int
-profil(p, uap, retval)
- struct proc *p;
- register struct profil_args *uap;
- register_t *retval;
+profil(struct proc *p, struct profil_args *uap, register_t *retval)
{
- register struct uprof *upp = &p->p_stats->p_prof;
- struct uprof *upc, *nupc;
+ boolean_t funnel_state;
+ int error;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ error = profil_funneled(p, uap, retval);
+ thread_funnel_set(kernel_flock, funnel_state);
+ return(error);
+}
+
+static int
+profil_funneled(struct proc *p, struct profil_args *uap, __unused register_t *retval)
+{
+ struct uprof *upp = &p->p_stats->p_prof;
int s;
if (uap->pcscale > (1 << 16))
return (EINVAL);
+
if (uap->pcscale == 0) {
stopprofclock(p);
return (0);
}
+ /*
+ * Block profile interrupts while changing state.
+ */
+ s = ml_set_interrupts_enabled(FALSE);
- /* Block profile interrupts while changing state. */
- s = splstatclock();
- PROFILE_LOCK(&upp->pr_lock);
- upp->pr_base = (caddr_t)uap->bufbase;
- upp->pr_size = uap->bufsize;
- upp->pr_off = uap->pcoffset;
- upp->pr_scale = uap->pcscale;
-
- /* remove buffers previously allocated with add_profil() */
- for (upc = upp->pr_next; upc; upc = nupc) {
- nupc = upc->pr_next;
- kfree(upc, sizeof (struct uprof));
- }
+ if (proc_is64bit(p)) {
+ struct user_uprof *user_upp = &p->p_stats->user_p_prof;
+ struct user_uprof *upc, *nupc;
+
+ PROFILE_LOCK(&user_upp->pr_lock);
+
+ user_upp->pr_base = uap->bufbase;
+ user_upp->pr_size = uap->bufsize;
+ user_upp->pr_off = uap->pcoffset;
+ user_upp->pr_scale = uap->pcscale;
+ upp->pr_base = NULL;
+ upp->pr_size = 0;
+ upp->pr_scale = 0;
+
+ /*
+ * remove buffers previously allocated with add_profil()
+ * don't do the kfree's while interrupts disabled
+ */
+ upc = user_upp->pr_next;
+ user_upp->pr_next = 0;
+
+ PROFILE_UNLOCK(&user_upp->pr_lock);
- upp->pr_next = 0;
- PROFILE_UNLOCK(&upp->pr_lock);
- startprofclock(p);
- splx(s);
+ startprofclock(p);
+ ml_set_interrupts_enabled(s);
+
+ while (upc) {
+ nupc = upc->pr_next;
+ kfree(upc, sizeof (*upc));
+ upc = nupc;
+ }
+
+ } else {
+ struct uprof *upc, *nupc;
+
+ PROFILE_LOCK(&upp->pr_lock);
+
+ upp->pr_base = CAST_DOWN(caddr_t, uap->bufbase);
+ upp->pr_size = uap->bufsize;
+ upp->pr_off = uap->pcoffset;
+ upp->pr_scale = uap->pcscale;
+
+ /*
+ * remove buffers previously allocated with add_profil()
+ * don't do the kfree's while interrupts disabled
+ */
+ upc = upp->pr_next;
+ upp->pr_next = 0;
+
+ PROFILE_UNLOCK(&upp->pr_lock);
+
+ startprofclock(p);
+ ml_set_interrupts_enabled(s);
+
+ while (upc) {
+ nupc = upc->pr_next;
+ kfree(upc, sizeof (struct uprof));
+ upc = nupc;
+ }
+ }
return(0);
}
-struct add_profile_args {
- short *bufbase;
- u_int bufsize;
- u_int pcoffset;
- u_int pcscale;
-};
int
-add_profil(p, uap, retval)
- struct proc *p;
- register struct add_profile_args *uap;
- register_t *retval;
+add_profil(struct proc *p, struct add_profil_args *uap, register_t *retval)
+{
+ boolean_t funnel_state;
+ int error;
+
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ error = add_profil_funneled(p, uap, retval);
+ thread_funnel_set(kernel_flock, funnel_state);
+ return(error);
+}
+
+
+static int
+add_profil_funneled(struct proc *p, struct add_profil_args *uap, __unused register_t *retval)
{
struct uprof *upp = &p->p_stats->p_prof, *upc;
+ struct user_uprof *user_upp = NULL, *user_upc;
int s;
+ boolean_t is64bit = proc_is64bit(p);
+
+
+ upc = NULL;
+ user_upc = NULL;
+
+ if (is64bit) {
+ user_upp = &p->p_stats->user_p_prof;
+
+ if (user_upp->pr_scale == 0)
+ return (0);
+ }
+ else {
+ if (upp->pr_scale == 0)
+ return (0);
+ }
+ if (is64bit) {
+ user_upc = (struct user_uprof *) kalloc(sizeof (struct user_uprof));
+ user_upc->pr_base = uap->bufbase;
+ user_upc->pr_size = uap->bufsize;
+ user_upc->pr_off = uap->pcoffset;
+ user_upc->pr_scale = uap->pcscale;
+ } else {
+ upc = (struct uprof *) kalloc(sizeof (struct uprof));
+ upc->pr_base = CAST_DOWN(caddr_t, uap->bufbase);
+ upc->pr_size = uap->bufsize;
+ upc->pr_off = uap->pcoffset;
+ upc->pr_scale = uap->pcscale;
+ }
+ s = ml_set_interrupts_enabled(FALSE);
+
+ if (is64bit) {
+ PROFILE_LOCK(&user_upp->pr_lock);
+ if (user_upp->pr_scale) {
+ user_upc->pr_next = user_upp->pr_next;
+ user_upp->pr_next = user_upc;
+ user_upc = NULL;
+ }
+ PROFILE_UNLOCK(&user_upp->pr_lock);
+ } else {
+ PROFILE_LOCK(&upp->pr_lock);
+ if (upp->pr_scale) {
+ upc->pr_next = upp->pr_next;
+ upp->pr_next = upc;
+ upc = NULL;
+ }
+ PROFILE_UNLOCK(&upp->pr_lock);
+ }
+ ml_set_interrupts_enabled(s);
+
+ if (upc)
+ kfree(upc, sizeof(struct uprof));
+ if (user_upc)
+ kfree(user_upc, sizeof(struct user_uprof));
- if (upp->pr_scale == 0)
- return (0);
- s = splstatclock();
- upc = (struct uprof *) kalloc(sizeof (struct uprof));
- upc->pr_base = (caddr_t)uap->bufbase;
- upc->pr_size = uap->bufsize;
- upc->pr_off = uap->pcoffset;
- upc->pr_scale = uap->pcscale;
- PROFILE_LOCK(&upp->pr_lock);
- upc->pr_next = upp->pr_next;
- upp->pr_next = upc;
- PROFILE_UNLOCK(&upp->pr_lock);
- splx(s);
return(0);
}
* update fails, we simply turn off profiling.
*/
void
-addupc_task(p, pc, ticks)
- register struct proc *p;
- register u_long pc;
- u_int ticks;
+addupc_task(struct proc *p, user_addr_t pc, u_int ticks)
{
- register struct uprof *prof;
- register short *cell;
- register u_int off;
+ u_int off;
u_short count;
/* Testing P_PROFIL may be unnecessary, but is certainly safe. */
if ((p->p_flag & P_PROFIL) == 0 || ticks == 0)
return;
- for (prof = &p->p_stats->p_prof; prof; prof = prof->pr_next) {
- off = PC_TO_INDEX(pc,prof);
- cell = (short *)(prof->pr_base + off);
- if (cell >= (short *)prof->pr_base &&
- cell < (short*)(prof->pr_size + (int) prof->pr_base)) {
- if (copyin((caddr_t)cell, (caddr_t) &count, sizeof(count)) == 0) {
- count += ticks;
- if(copyout((caddr_t) &count, (caddr_t)cell, sizeof(count)) == 0)
- return;
- }
- p->p_stats->p_prof.pr_scale = 0;
- stopprofclock(p);
- break;
- }
+ if (proc_is64bit(p)) {
+ struct user_uprof *prof;
+ user_addr_t cell;
+
+ for (prof = &p->p_stats->user_p_prof; prof; prof = prof->pr_next) {
+ off = PC_TO_INDEX(pc, prof);
+ cell = (prof->pr_base + off);
+ if (cell >= prof->pr_base &&
+ cell < (prof->pr_size + prof->pr_base)) {
+ if (copyin(cell, (caddr_t) &count, sizeof(count)) == 0) {
+ count += ticks;
+ if(copyout((caddr_t) &count, cell, sizeof(count)) == 0)
+ return;
+ }
+ p->p_stats->user_p_prof.pr_scale = 0;
+ stopprofclock(p);
+ break;
+ }
+ }
+ }
+ else {
+ struct uprof *prof;
+ short *cell;
+
+ for (prof = &p->p_stats->p_prof; prof; prof = prof->pr_next) {
+ off = PC_TO_INDEX(CAST_DOWN(uint, pc),prof);
+ cell = (short *)(prof->pr_base + off);
+ if (cell >= (short *)prof->pr_base &&
+ cell < (short*)(prof->pr_size + (int) prof->pr_base)) {
+ if (copyin(CAST_USER_ADDR_T(cell), (caddr_t) &count, sizeof(count)) == 0) {
+ count += ticks;
+ if(copyout((caddr_t) &count, CAST_USER_ADDR_T(cell), sizeof(count)) == 0)
+ return;
+ }
+ p->p_stats->p_prof.pr_scale = 0;
+ stopprofclock(p);
+ break;
+ }
+ }
}
}
projects / apple / xnu.git / blobdiff