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Remove kgmon(8)

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Follow-up to the removal of the mcov from kernel.

Noted by:	mckusick
Reviewed by:	mckusick
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D29563
This commit is contained in:
Konstantin Belousov 2021-04-03 01:00:20 +03:00
parent a64096aa63
commit 2d223ccdae
11 changed files with 7 additions and 714 deletions
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4
ObsoleteFiles.inc
View File

@ -36,6 +36,10 @@
# xargs -n1 | sort | uniq -d;
# done
# 20210403: remove kgmon(8)
OLD_FILES+=usr/sbin/kgmon
OLD_FILES+=usr/share/man/man8/kgmon.8.gz
# 20210401: remove bt(4) man page
OLD_FILES+=usr/share/man/man4/bt.4.gz

10
share/man/man4/hwpmc.4
View File

@ -28,7 +28,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd November 2, 2012
.Dd Apryl 3, 2021
.Dt HWPMC 4
.Os
.Sh NAME
@ -198,13 +198,6 @@ This modifier is valid only for a PMC being allocated in process-private
mode.
It signifies that the PMC will track hardware events for its
target process and the target's current and future descendants.
.It Dv PMC_F_KGMON
This modifier is valid only for a PMC being allocated in system-wide
sampling mode.
It signifies that the PMC's sampling interrupt is to be used to drive
kernel profiling via
.Xr kgmon 8 .
This functionality is currently unimplemented.
.It Dv PMC_F_LOG_PROCCSW
This modifier is valid only for a PMC being allocated in process-private
mode.
@ -764,7 +757,6 @@ operation is not being monitored by
.Xr kenv 1 ,
.Xr pmc 3 ,
.Xr pmclog 3 ,
.Xr kgmon 8 ,
.Xr kldload 8 ,
.Xr pmccontrol 8 ,
.Xr pmcstat 8 ,

3
share/man/man7/clocks.7
View File

@ -104,8 +104,7 @@ and throwing away information and resolution.
The profiling clock.
This is a real clock with frequency 1024.
It is used mainly by
.Xr moncontrol 3 ,
.Xr kgmon 8
.Xr moncontrol 3
and
.Xr gprof 1 .
Applications should determine its actual frequency using

5
targets/pseudo/userland/Makefile.depend
View File

@ -784,7 +784,6 @@ DIRDEPS.amd64= \
usr.sbin/hyperv/tools \
usr.sbin/hyperv/tools/kvp \
usr.sbin/hyperv/tools/vss \
usr.sbin/kgmon \
usr.sbin/lptcontrol \
usr.sbin/mptable \
usr.sbin/spkrtest \
@ -794,8 +793,7 @@ DIRDEPS.amd64= \
DIRDEPS.arm= \
sbin/bsdlabel \
sbin/fdisk \
usr.sbin/ofwdump \
usr.sbin/kgmon
usr.sbin/ofwdump
DIRDEPS.i386= \
sbin/bsdlabel \
@ -809,7 +807,6 @@ DIRDEPS.i386= \
usr.sbin/hyperv/tools \
usr.sbin/hyperv/tools/kvp \
usr.sbin/hyperv/tools/vss \
usr.sbin/kgmon \
usr.sbin/lptcontrol \
usr.sbin/mptable \
usr.sbin/pnpinfo \

1
usr.sbin/Makefile.amd64
View File

@ -21,7 +21,6 @@ SUBDIR+= cpucontrol
.if ${MK_HYPERV} != "no"
SUBDIR+= hyperv
.endif
SUBDIR+= kgmon
SUBDIR+= lptcontrol
SUBDIR+= mptable
SUBDIR+= spkrtest

1
usr.sbin/Makefile.arm
View File

@ -1,4 +1,3 @@
# $FreeBSD$
SUBDIR+= kgmon
SUBDIR+= ofwdump

1
usr.sbin/Makefile.i386
View File

@ -15,7 +15,6 @@ SUBDIR+= cpucontrol
.if ${MK_HYPERV} != "no"
SUBDIR+= hyperv
.endif
SUBDIR+= kgmon
SUBDIR+= lptcontrol
SUBDIR+= mptable
SUBDIR+= pnpinfo

16
usr.sbin/kgmon/Makefile
View File

@ -1,16 +0,0 @@
# @(#)Makefile 8.1 (Berkeley) 6/6/93
# $FreeBSD$
PROG= kgmon
MAN= kgmon.8
WARNS?= 2
# This program may safely be run setuid-root to allow non-root
# users to start, stop, and reset profiling buffers.
#
#BINOWN=root
#BINMODE=4555
LIBADD= kvm
.include <bsd.prog.mk>

19
usr.sbin/kgmon/Makefile.depend
View File

@ -1,19 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
gnu/lib/csu \
include \
include/xlocale \
lib/${CSU_DIR} \
lib/libc \
lib/libcompiler_rt \
lib/libelf \
lib/libkvm \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

130
usr.sbin/kgmon/kgmon.8
View File

@ -1,130 +0,0 @@
.\" Copyright (c) 1983, 1991, 1993
.\" The Regents of the University of California. 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.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
.\"
.\" @(#)kgmon.8 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
.Dd November 27, 2017
.Dt KGMON 8
.Os
.Sh NAME
.Nm kgmon
.Nd generate a dump of the operating system's profile buffers
.Sh SYNOPSIS
.Nm
.Op Fl Bbhpr
.Op Fl M Ar core
.Op Fl N Ar system
.Sh DESCRIPTION
The
.Nm
utility is used when profiling the operating system.
When no arguments are supplied,
.Nm
indicates the state of operating system profiling as running,
off, or not configured.
(see
.Xr config 8 )
If the
.Fl p
flag is specified,
.Nm
extracts profile data from the operating system and produces a
.Pa gmon.out
file suitable for later analysis by
.Xr gprof 1 .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl B
Resume the collection of high resolution profile data.
.It Fl b
Resume the collection of low resolution profile data.
.It Fl h
Stop the collection of profile data.
.It Fl p
Dump the contents of the profile buffers into a
.Pa gmon.out
file.
.It Fl r
Reset all the profile buffers.
If the
.Fl p
flag is also specified, the
.Pa gmon.out
file is generated before the buffers are reset.
.It Fl M
Extract values associated with the name list from the specified core
instead of the default
.Pa /dev/kmem .
.It Fl N
Extract the name list from the specified system instead of the
default
.Pa /boot/kernel/kernel .
.El
.Pp
If neither
.Fl B
nor
.Fl b
nor
.Fl h
is specified, the state of profiling collection remains unchanged.
For example, if the
.Fl p
flag is specified and profile data is being collected,
profiling will be momentarily suspended,
the operating system profile buffers will be dumped,
and profiling will be immediately resumed.
.Pp
The profile buffers should be reset when the resolution
of the profile data is changed.
.Sh FILES
.Bl -tag -width /boot/kernel/kernel -compact
.It Pa /boot/kernel/kernel
the default system
.It Pa /dev/kmem
the default memory
.El
.Sh DIAGNOSTICS
Users with only read permission on
.Pa /dev/kmem
cannot change the state
of profiling collection.
They can get a
.Pa gmon.out
file with the warning that the data may be
inconsistent if profiling is in progress.
.Sh SEE ALSO
.Xr gprof 1 ,
.Xr config 8 ,
.Xr pmcstat 8
.Sh HISTORY
The
.Nm
utility appeared in
.Bx 4.2 .

531
usr.sbin/kgmon/kgmon.c
View File

@ -1,531 +0,0 @@
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1983, 1992, 1993
* The Regents of the University of California. 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1983, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)kgmon.c 8.1 (Berkeley) 6/6/93";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/file.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <sys/gmon.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <kvm.h>
#include <limits.h>
#include <nlist.h>
#include <paths.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
struct nlist nl[] = {
#define N_GMONPARAM 0
{ "__gmonparam" },
#define N_PROFHZ 1
{ "_profhz" },
{ NULL },
};
struct kvmvars {
kvm_t *kd;
struct gmonparam gpm;
};
int Bflag, bflag, hflag, kflag, rflag, pflag;
int debug = 0;
int getprof(struct kvmvars *);
int getprofhz(struct kvmvars *);
void kern_readonly(int);
int openfiles(const char *, char *, struct kvmvars *);
void setprof(struct kvmvars *kvp, int state);
void dumpstate(struct kvmvars *kvp);
void reset(struct kvmvars *kvp);
static void usage(void);
int
main(int argc, char **argv)
{
int ch, mode, disp, accessmode;
struct kvmvars kvmvars;
const char *systemname;
char *kmemf;
if (seteuid(getuid()) != 0) {
err(1, "seteuid failed\n");
}
kmemf = NULL;
systemname = NULL;
while ((ch = getopt(argc, argv, "M:N:Bbhpr")) != -1) {
switch((char)ch) {
case 'M':
kmemf = optarg;
kflag = 1;
break;
case 'N':
systemname = optarg;
break;
case 'B':
Bflag = 1;
break;
case 'b':
bflag = 1;
break;
case 'h':
hflag = 1;
break;
case 'p':
pflag = 1;
break;
case 'r':
rflag = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
#define BACKWARD_COMPATIBILITY
#ifdef BACKWARD_COMPATIBILITY
if (*argv) {
systemname = *argv;
if (*++argv) {
kmemf = *argv;
++kflag;
}
}
#endif
if (systemname == NULL)
systemname = getbootfile();
accessmode = openfiles(systemname, kmemf, &kvmvars);
mode = getprof(&kvmvars);
if (hflag)
disp = GMON_PROF_OFF;
else if (Bflag)
disp = GMON_PROF_HIRES;
else if (bflag)
disp = GMON_PROF_ON;
else
disp = mode;
if (pflag)
dumpstate(&kvmvars);
if (rflag)
reset(&kvmvars);
if (accessmode == O_RDWR)
setprof(&kvmvars, disp);
(void)fprintf(stdout, "kgmon: kernel profiling is %s.\n",
disp == GMON_PROF_OFF ? "off" :
disp == GMON_PROF_HIRES ? "running (high resolution)" :
disp == GMON_PROF_ON ? "running" :
disp == GMON_PROF_BUSY ? "busy" :
disp == GMON_PROF_ERROR ? "off (error)" :
"in an unknown state");
return (0);
}
static void
usage(void)
{
fprintf(stderr, "usage: kgmon [-Bbhrp] [-M core] [-N system]\n");
exit(1);
}
/*
* Check that profiling is enabled and open any necessary files.
*/
int
openfiles(const char *systemname, char *kmemf, struct kvmvars *kvp)
{
size_t size;
int mib[3], state, openmode;
char errbuf[_POSIX2_LINE_MAX];
if (!kflag) {
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
mib[2] = GPROF_STATE;
size = sizeof state;
if (sysctl(mib, 3, &state, &size, NULL, 0) < 0)
errx(20, "profiling not defined in kernel");
if (!(Bflag || bflag || hflag || rflag ||
(pflag &&
(state == GMON_PROF_HIRES || state == GMON_PROF_ON))))
return (O_RDONLY);
(void)seteuid(0);
if (sysctl(mib, 3, NULL, NULL, &state, size) >= 0)
return (O_RDWR);
(void)seteuid(getuid());
kern_readonly(state);
return (O_RDONLY);
}
openmode = (Bflag || bflag || hflag || pflag || rflag)
? O_RDWR : O_RDONLY;
kvp->kd = kvm_openfiles(systemname, kmemf, NULL, openmode, errbuf);
if (kvp->kd == NULL) {
if (openmode == O_RDWR) {
openmode = O_RDONLY;
kvp->kd = kvm_openfiles(systemname, kmemf, NULL, O_RDONLY,
errbuf);
}
if (kvp->kd == NULL)
errx(2, "kvm_openfiles: %s", errbuf);
kern_readonly(GMON_PROF_ON);
}
if (kvm_nlist(kvp->kd, nl) < 0)
errx(3, "%s: no namelist", systemname);
if (!nl[N_GMONPARAM].n_value)
errx(20, "profiling not defined in kernel");
return (openmode);
}
/*
* Suppress options that require a writable kernel.
*/
void
kern_readonly(int mode)
{
(void)fprintf(stderr, "kgmon: kernel read-only: ");
if (pflag && (mode == GMON_PROF_HIRES || mode == GMON_PROF_ON))
(void)fprintf(stderr, "data may be inconsistent\n");
if (rflag)
(void)fprintf(stderr, "-r suppressed\n");
if (Bflag)
(void)fprintf(stderr, "-B suppressed\n");
if (bflag)
(void)fprintf(stderr, "-b suppressed\n");
if (hflag)
(void)fprintf(stderr, "-h suppressed\n");
rflag = Bflag = bflag = hflag = 0;
}
/*
* Get the state of kernel profiling.
*/
int
getprof(struct kvmvars *kvp)
{
size_t size;
int mib[3];
if (kflag) {
size = kvm_read(kvp->kd, nl[N_GMONPARAM].n_value, &kvp->gpm,
sizeof kvp->gpm);
} else {
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
mib[2] = GPROF_GMONPARAM;
size = sizeof kvp->gpm;
if (sysctl(mib, 3, &kvp->gpm, &size, NULL, 0) < 0)
size = 0;
}
/*
* Accept certain undersized "structs" from old kernels. We need
* everything up to hashfraction, and want profrate and
* histcounter_type. Assume that the kernel doesn't put garbage
* in any padding that is returned instead of profrate and
* histcounter_type. This is a bad assumption for dead kernels,
* since kvm_read() will normally return garbage for bytes beyond
* the end of the actual kernel struct, if any.
*/
if (size < offsetof(struct gmonparam, hashfraction) +
sizeof(kvp->gpm.hashfraction) || size > sizeof(kvp->gpm))
errx(4, "cannot get gmonparam: %s",
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
bzero((char *)&kvp->gpm + size, sizeof(kvp->gpm) - size);
if (kvp->gpm.profrate == 0)
kvp->gpm.profrate = getprofhz(kvp);
#ifdef __i386__
if (kvp->gpm.histcounter_type == 0) {
/*
* This fixup only works for not-so-old i386 kernels. The
* magic 16 is the kernel FUNCTION_ALIGNMENT. 64-bit
* counters are signed; smaller counters are unsigned.
*/
kvp->gpm.histcounter_type = 16 /
(kvp->gpm.textsize / kvp->gpm.kcountsize) * CHAR_BIT;
if (kvp->gpm.histcounter_type == 64)
kvp->gpm.histcounter_type = -64;
}
#endif
return (kvp->gpm.state);
}
/*
* Enable or disable kernel profiling according to the state variable.
*/
void
setprof(struct kvmvars *kvp, int state)
{
struct gmonparam *p = (struct gmonparam *)nl[N_GMONPARAM].n_value;
size_t sz;
int mib[3], oldstate;
sz = sizeof(state);
if (!kflag) {
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
mib[2] = GPROF_STATE;
if (sysctl(mib, 3, &oldstate, &sz, NULL, 0) < 0)
goto bad;
if (oldstate == state)
return;
(void)seteuid(0);
if (sysctl(mib, 3, NULL, NULL, &state, sz) >= 0) {
(void)seteuid(getuid());
return;
}
(void)seteuid(getuid());
} else if (kvm_write(kvp->kd, (u_long)&p->state, (void *)&state, sz)
== (ssize_t)sz)
return;
bad:
warnx("warning: cannot turn profiling %s",
state == GMON_PROF_OFF ? "off" : "on");
}
/*
* Build the gmon.out file.
*/
void
dumpstate(struct kvmvars *kvp)
{
register FILE *fp;
struct rawarc rawarc;
struct tostruct *tos;
u_long frompc;
u_short *froms, *tickbuf;
size_t i;
int mib[3];
struct gmonhdr h;
int fromindex, endfrom, toindex;
setprof(kvp, GMON_PROF_OFF);
fp = fopen("gmon.out", "w");
if (fp == NULL) {
warn("gmon.out");
return;
}
/*
* Build the gmon header and write it to a file.
*/
bzero(&h, sizeof(h));
h.lpc = kvp->gpm.lowpc;
h.hpc = kvp->gpm.highpc;
h.ncnt = kvp->gpm.kcountsize + sizeof(h);
h.version = GMONVERSION;
h.profrate = kvp->gpm.profrate;
h.histcounter_type = kvp->gpm.histcounter_type;
fwrite((char *)&h, sizeof(h), 1, fp);
/*
* Write out the tick buffer.
*/
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
if ((tickbuf = (u_short *)malloc(kvp->gpm.kcountsize)) == NULL)
errx(5, "cannot allocate kcount space");
if (kflag) {
i = kvm_read(kvp->kd, (u_long)kvp->gpm.kcount, (void *)tickbuf,
kvp->gpm.kcountsize);
} else {
mib[2] = GPROF_COUNT;
i = kvp->gpm.kcountsize;
if (sysctl(mib, 3, tickbuf, &i, NULL, 0) < 0)
i = 0;
}
if (i != kvp->gpm.kcountsize)
errx(6, "read ticks: read %lu, got %ld: %s",
kvp->gpm.kcountsize, (long)i,
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
if ((fwrite(tickbuf, kvp->gpm.kcountsize, 1, fp)) != 1)
err(7, "writing tocks to gmon.out");
free(tickbuf);
/*
* Write out the arc info.
*/
if ((froms = (u_short *)malloc(kvp->gpm.fromssize)) == NULL)
errx(8, "cannot allocate froms space");
if (kflag) {
i = kvm_read(kvp->kd, (u_long)kvp->gpm.froms, (void *)froms,
kvp->gpm.fromssize);
} else {
mib[2] = GPROF_FROMS;
i = kvp->gpm.fromssize;
if (sysctl(mib, 3, froms, &i, NULL, 0) < 0)
i = 0;
}
if (i != kvp->gpm.fromssize)
errx(9, "read froms: read %lu, got %ld: %s",
kvp->gpm.fromssize, (long)i,
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
if ((tos = (struct tostruct *)malloc(kvp->gpm.tossize)) == NULL)
errx(10, "cannot allocate tos space");
if (kflag) {
i = kvm_read(kvp->kd, (u_long)kvp->gpm.tos, (void *)tos,
kvp->gpm.tossize);
} else {
mib[2] = GPROF_TOS;
i = kvp->gpm.tossize;
if (sysctl(mib, 3, tos, &i, NULL, 0) < 0)
i = 0;
}
if (i != kvp->gpm.tossize)
errx(11, "read tos: read %lu, got %ld: %s",
kvp->gpm.tossize, (long)i,
kflag ? kvm_geterr(kvp->kd) : strerror(errno));
if (debug)
warnx("lowpc 0x%lx, textsize 0x%lx",
(unsigned long)kvp->gpm.lowpc, kvp->gpm.textsize);
endfrom = kvp->gpm.fromssize / sizeof(*froms);
for (fromindex = 0; fromindex < endfrom; ++fromindex) {
if (froms[fromindex] == 0)
continue;
frompc = (u_long)kvp->gpm.lowpc +
(fromindex * kvp->gpm.hashfraction * sizeof(*froms));
for (toindex = froms[fromindex]; toindex != 0;
toindex = tos[toindex].link) {
if (debug)
warnx("[mcleanup] frompc 0x%lx selfpc 0x%lx "
"count %ld", frompc, tos[toindex].selfpc,
tos[toindex].count);
rawarc.raw_frompc = frompc;
rawarc.raw_selfpc = (u_long)tos[toindex].selfpc;
rawarc.raw_count = tos[toindex].count;
fwrite((char *)&rawarc, sizeof(rawarc), 1, fp);
}
}
fclose(fp);
}
/*
* Get the profiling rate.
*/
int
getprofhz(struct kvmvars *kvp)
{
size_t size;
int mib[2], profrate;
struct clockinfo clockrate;
if (kflag) {
profrate = 1;
if (kvm_read(kvp->kd, nl[N_PROFHZ].n_value, &profrate,
sizeof profrate) != sizeof profrate)
warnx("get clockrate: %s", kvm_geterr(kvp->kd));
return (profrate);
}
mib[0] = CTL_KERN;
mib[1] = KERN_CLOCKRATE;
clockrate.profhz = 1;
size = sizeof clockrate;
if (sysctl(mib, 2, &clockrate, &size, NULL, 0) < 0)
warn("get clockrate");
return (clockrate.profhz);
}
/*
* Reset the kernel profiling date structures.
*/
void
reset(struct kvmvars *kvp)
{
char *zbuf;
u_long biggest;
int mib[3];
setprof(kvp, GMON_PROF_OFF);
biggest = kvp->gpm.kcountsize;
if (kvp->gpm.fromssize > biggest)
biggest = kvp->gpm.fromssize;
if (kvp->gpm.tossize > biggest)
biggest = kvp->gpm.tossize;
if ((zbuf = (char *)malloc(biggest)) == NULL)
errx(12, "cannot allocate zbuf space");
bzero(zbuf, biggest);
if (kflag) {
if (kvm_write(kvp->kd, (u_long)kvp->gpm.kcount, zbuf,
kvp->gpm.kcountsize) != (ssize_t)kvp->gpm.kcountsize)
errx(13, "tickbuf zero: %s", kvm_geterr(kvp->kd));
if (kvm_write(kvp->kd, (u_long)kvp->gpm.froms, zbuf,
kvp->gpm.fromssize) != (ssize_t)kvp->gpm.fromssize)
errx(14, "froms zero: %s", kvm_geterr(kvp->kd));
if (kvm_write(kvp->kd, (u_long)kvp->gpm.tos, zbuf,
kvp->gpm.tossize) != (ssize_t)kvp->gpm.tossize)
errx(15, "tos zero: %s", kvm_geterr(kvp->kd));
free(zbuf);
return;
}
(void)seteuid(0);
mib[0] = CTL_KERN;
mib[1] = KERN_PROF;
mib[2] = GPROF_COUNT;
if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.kcountsize) < 0)
err(13, "tickbuf zero");
mib[2] = GPROF_FROMS;
if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.fromssize) < 0)
err(14, "froms zero");
mib[2] = GPROF_TOS;
if (sysctl(mib, 3, NULL, NULL, zbuf, kvp->gpm.tossize) < 0)
err(15, "tos zero");
(void)seteuid(getuid());
free(zbuf);
}