xnu-2422.110.17.tar.gz

[apple/xnu.git] / bsd / kern / subr_prof.c

diff --git a/bsd/kern/subr_prof.c b/bsd/kern/subr_prof.c
index 4b84e1430f4529f8fb543e94134b42cdf29e0573..80b6edc2708dcd242fb2f1a5b0f7d47a00b020eb 100644 (file)
--- a/bsd/kern/subr_prof.c
+++ b/bsd/kern/subr_prof.c
@@ -1,16 +1,19 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2008 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 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
  * 
  * 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
+ * 
+ * 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
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER


@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
  * 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 */
 /*-
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*-


@@ -58,38 +61,58 @@
  *     @(#)subr_prof.c 8.3 (Berkeley) 9/23/93
  */
 
  *     @(#)subr_prof.c 8.3 (Berkeley) 9/23/93
  */
 

+#ifdef GPROF
+#include <libkern/kernel_mach_header.h>
+#endif
+

 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #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 <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/cpu_number.h>

+#include <kern/kalloc.h>

 
 #ifdef GPROF
 #include <sys/malloc.h>
 #include <sys/gmon.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
  */
 
 /*
  * 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;
+       tostruct_t *cp;
+       kernel_segment_command_t        *sgp;   /* 32 bit mach object file segment */

        struct gmonparam *p = &_gmonparam;
        
        sgp = getsegbyname("__TEXT");
        struct gmonparam *p = &_gmonparam;
        
        sgp = getsegbyname("__TEXT");

-       p->lowpc = (u_long)sgp->vmaddr;
-       p->highpc = (u_long)(sgp->vmaddr + sgp->vmsize);
+       p->lowpc = (u_int32_t)sgp->vmaddr;
+       p->highpc = (u_int32_t)(sgp->vmaddr + sgp->vmsize);

        
        /*
         * Round lowpc and highpc to multiples of the density we're using
        
        /*
         * Round lowpc and highpc to multiples of the density we're using


@@ -98,7 +121,7 @@ kmstartup()
        p->lowpc = ROUNDDOWN(p->lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
        p->highpc = ROUNDUP(p->highpc, HISTFRACTION * sizeof(HISTCOUNTER));
        p->textsize = p->highpc - p->lowpc;
        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->textsize, p->lowpc, p->highpc);
        p->kcountsize = p->textsize / HISTFRACTION;
        p->hashfraction = HASHFRACTION;


@@ -108,35 +131,49 @@ kmstartup()
                p->tolimit = MINARCS;
        else if (p->tolimit > MAXARCS)
                p->tolimit = MAXARCS;
                p->tolimit = MINARCS;
        else if (p->tolimit > MAXARCS)
                p->tolimit = MAXARCS;

-       p->tossize = p->tolimit * sizeof(struct tostruct);
+       p->tossize = p->tolimit * sizeof(tostruct_t);

        /* Why not use MALLOC with M_GPROF ? */
        /* Why not use MALLOC with M_GPROF ? */

-       cp = (char *)kalloc(p->kcountsize + p->fromssize + p->tossize);
+       cp = (tostruct_t *)kalloc(p->kcountsize + p->fromssize + p->tossize);

        if (cp == 0) {
                printf("No memory for profiling.\n");
                return;
        }
        bzero(cp, p->kcountsize + p->tossize + p->fromssize);
        if (cp == 0) {
                printf("No memory for profiling.\n");
                return;
        }
        bzero(cp, p->kcountsize + p->tossize + p->fromssize);

-       p->tos = (struct tostruct *)cp;
-       cp += p->tossize;
+       p->tos = cp;
+       cp = (tostruct_t *)((vm_offset_t)cp + p->tossize);

        p->kcount = (u_short *)cp;
        p->kcount = (u_short *)cp;

-       cp += p->kcountsize;
+       cp = (tostruct_t *)((vm_offset_t)cp + p->kcountsize);

        p->froms = (u_short *)cp;
        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.
+ * XXX         These should be broken out into per-argument OID values,
+ * XXX         since there are no sub-OID parameter values, but unfortunately
+ * XXX         there is barely enough time for an initial conversion.
+ *
+ * Note:       These items appear to be read/write.

  */
  */

-int
-sysctl_doprof(name, namelen, oldp, oldlenp, newp, newlen)
-       int *name;
-       u_int namelen;
-       void *oldp;
-       size_t *oldlenp;
-       void *newp;
-       size_t newlen;
+STATIC int
+sysctl_doprofhandle SYSCTL_HANDLER_ARGS

 {
 {

+sysctl_doprof(int *name, u_int namelen, user_addr_t oldp, size_t *oldlenp, 
+              user_addr_t newp, size_t newlen)
+{
+       __unused int cmd = oidp->oid_arg2;      /* subcommand*/
+       int *name = arg1;               /* oid element argument vector */
+       int namelen = arg2;             /* number of oid element arguments */
+       user_addr_t oldp = req->oldptr; /* user buffer copy out address */
+       size_t *oldlenp = req->oldlen;  /* user buffer copy out size */
+       user_addr_t newp = req->newptr; /* user buffer copy in address */
+       size_t newlen = req->newlen;    /* user buffer copy in size */
+

        struct gmonparam *gp = &_gmonparam;
        struct gmonparam *gp = &_gmonparam;

-       int error;
+       int error = 0;

 
        /* all sysctl names at this level are terminal */
        if (namelen != 1)
 
        /* all sysctl names at this level are terminal */
        if (namelen != 1)


@@ -146,28 +183,44 @@ sysctl_doprof(name, namelen, oldp, oldlenp, newp, newlen)
        case GPROF_STATE:
                error = sysctl_int(oldp, oldlenp, newp, newlen, &gp->state);
                if (error)
        case GPROF_STATE:
                error = sysctl_int(oldp, oldlenp, newp, newlen, &gp->state);
                if (error)

-                       return (error);
+                       break;

                if (gp->state == GMON_PROF_OFF)
                        stopprofclock(kernproc);
                else
                        startprofclock(kernproc);
                if (gp->state == GMON_PROF_OFF)
                        stopprofclock(kernproc);
                else
                        startprofclock(kernproc);

-               return (0);
+               break;

        case GPROF_COUNT:
        case GPROF_COUNT:

-               return (sysctl_struct(oldp, oldlenp, newp, newlen,
-                   gp->kcount, gp->kcountsize));
+               error = sysctl_struct(oldp, oldlenp, newp, newlen, 
+                                     gp->kcount, gp->kcountsize);
+               break;

        case GPROF_FROMS:
        case GPROF_FROMS:

-               return (sysctl_struct(oldp, oldlenp, newp, newlen,
-                   gp->froms, gp->fromssize));
+               error = sysctl_struct(oldp, oldlenp, newp, newlen,
+                                     gp->froms, gp->fromssize);
+               break;

        case GPROF_TOS:
        case GPROF_TOS:

-               return (sysctl_struct(oldp, oldlenp, newp, newlen,
-                   gp->tos, gp->tossize));
+               error = sysctl_struct(oldp, oldlenp, newp, newlen,
+                                     gp->tos, gp->tossize);
+               break;

        case GPROF_GMONPARAM:
        case GPROF_GMONPARAM:

-               return (sysctl_rdstruct(oldp, oldlenp, newp, gp, sizeof *gp));
+               error = sysctl_rdstruct(oldp, oldlenp, newp, gp, sizeof *gp);
+               break;

        default:
        default:

-               return (EOPNOTSUPP);
+               error = ENOTSUP;
+               break;

        }
        }

-       /* NOTREACHED */
+
+       /* adjust index so we return the right required/consumed amount */
+       if (!error)
+               req->oldidx += req->oldlen;
+
+       return(error);

 }
 }

+SYSCTL_PROC(_kern, KERN_PROF, prof, STLFLAG_NODE|CTLFLAG_RW | CTLFLAG_LOCKED,
+       0,                      /* Pointer argument (arg1) */
+       0,                      /* Integer argument (arg2) */
+       sysctl_doprofhandle,    /* Handler function */
+       NULL,                   /* No explicit data */
+       "");

 
 
 /*
 
 
 /*


@@ -175,15 +228,14 @@ sysctl_doprof(name, namelen, oldp, oldlenp, newp, newlen)
  */
 void
 mcount(
  */
 void
 mcount(

-    register u_long frompc,
-    register u_long selfpc
+    uintptr_t frompc,
+    uintptr_t selfpc

 )
 {
     unsigned short *frompcindex;
 )
 {
     unsigned short *frompcindex;

-       register struct tostruct *top, *prevtop;
+       tostruct_t *top, *prevtop;

        struct gmonparam *p = &_gmonparam;
        struct gmonparam *p = &_gmonparam;

-       register long toindex;
-       MCOUNT_INIT;
+       long toindex;

 
     /*
      * check that we are profiling
 
     /*
      * check that we are profiling


@@ -192,7 +244,7 @@ mcount(
     if (p->state != GMON_PROF_ON)
         return;
 
     if (p->state != GMON_PROF_ON)
         return;
 

-       MCOUNT_ENTER;
+       lck_spin_lock(mcount_lock);

 
        /*
         *      check that frompcindex is a reasonable pc value.
 
        /*
         *      check that frompcindex is a reasonable pc value.


@@ -275,108 +327,30 @@ mcount(
 
        }
 done:
 
        }
 done:

-       MCOUNT_EXIT;
+       lck_spin_unlock(mcount_lock);

        return;
 
 overflow:
     p->state = GMON_PROF_ERROR;
        return;
 
 overflow:
     p->state = GMON_PROF_ERROR;

-       MCOUNT_EXIT;
+        lck_spin_unlock(mcount_lock);

        printf("mcount: tos overflow\n");
        return;
 }
 
 #endif /* GPROF */
 
        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)
 #define PROFILE_LOCK(x)
 #define PROFILE_UNLOCK(x)

-#endif

 
 

-struct profil_args {
-       short   *bufbase;
-       u_int bufsize;
-       u_int pcoffset;
-       u_int pcscale;
-};
-int
-profil(p, uap, retval)
-       struct proc *p;
-       register struct profil_args *uap;
-       register_t *retval;
-{
-       register struct uprof *upp = &p->p_stats->p_prof;
-       struct uprof *upc, *nupc;
-       int s;
-
-       if (uap->pcscale > (1 << 16))
-               return (EINVAL);
-       if (uap->pcscale == 0) {
-               stopprofclock(p);
-               return (0);
-       }
-
-       /* 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));
-       }
-
-       upp->pr_next = 0;
-       PROFILE_UNLOCK(&upp->pr_lock);
-       startprofclock(p);
-       splx(s);
-       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;
-{
-       struct uprof *upp = &p->p_stats->p_prof, *upc;
-       int s;
-
-       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);
-}

 
 /*
  * Scale is a fixed-point number with the binary point 16 bits
  * into the value, and is <= 1.0.  pc is at most 32 bits, so the
  * intermediate result is at most 48 bits.
  */
 
 /*
  * Scale is a fixed-point number with the binary point 16 bits
  * into the value, and is <= 1.0.  pc is at most 32 bits, so the
  * intermediate result is at most 48 bits.
  */

+//K64todo - this doesn't fit into 64 bit any more, it needs 64+16

 #define PC_TO_INDEX(pc, prof) \
 #define PC_TO_INDEX(pc, prof) \

-       ((int)(((u_quad_t)((pc) - (prof)->pr_off) * \
+       ((user_addr_t)(((u_quad_t)((pc) - (prof)->pr_off) * \

                        (u_quad_t)((prof)->pr_scale)) >> 16) & ~1)
 
 /*
                        (u_quad_t)((prof)->pr_scale)) >> 16) & ~1)
 
 /*


@@ -394,33 +368,53 @@ add_profil(p, uap, retval)
  * update fails, we simply turn off profiling.
  */
 void
  * 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;
+       user_addr_t off;

        u_short count;
 
        /* Testing P_PROFIL may be unnecessary, but is certainly safe. */
        if ((p->p_flag & P_PROFIL) == 0 || ticks == 0)
                return;
 
        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(pc,prof);
+            cell = (short *)(prof->pr_base + off);
+            if (cell >= (short *)prof->pr_base &&
+                cell < (short*)(prof->pr_size + 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;
+            }
+        }

        }
 }
        }
 }