mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-28 11:57:28 +00:00
c0ae66888b
kernel via the global cpuset_domain[] array. To export these to userland, add a CPU_WHICH_DOMAIN level that can be used to fetch the mask for a specific domain. Add a -d flag to cpuset(1) that can be used to fetch the mask for a given domain. Differential Revision: https://reviews.freebsd.org/D1232 Submitted by: jeff (kernel bits) Reviewed by: adrian, jeff
366 lines
7.8 KiB
C
366 lines
7.8 KiB
C
/*
|
|
* Copyright (c) 2007, 2008 Jeffrey Roberson <jeff@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Copyright (c) 2008 Nokia Corporation
|
|
* 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 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/cpuset.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
static int Cflag;
|
|
static int cflag;
|
|
static int dflag;
|
|
static int gflag;
|
|
static int iflag;
|
|
static int jflag;
|
|
static int lflag;
|
|
static int pflag;
|
|
static int rflag;
|
|
static int sflag;
|
|
static int tflag;
|
|
static int xflag;
|
|
static id_t id;
|
|
static cpulevel_t level;
|
|
static cpuwhich_t which;
|
|
|
|
static void usage(void);
|
|
|
|
static void printset(cpuset_t *mask);
|
|
|
|
static void
|
|
parselist(char *list, cpuset_t *mask)
|
|
{
|
|
enum { NONE, NUM, DASH } state;
|
|
int lastnum;
|
|
int curnum;
|
|
char *l;
|
|
|
|
if (strcasecmp(list, "all") == 0) {
|
|
if (cpuset_getaffinity(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1,
|
|
sizeof(*mask), mask) != 0)
|
|
err(EXIT_FAILURE, "getaffinity");
|
|
return;
|
|
}
|
|
state = NONE;
|
|
curnum = lastnum = 0;
|
|
for (l = list; *l != '\0';) {
|
|
if (isdigit(*l)) {
|
|
curnum = atoi(l);
|
|
if (curnum > CPU_SETSIZE)
|
|
errx(EXIT_FAILURE,
|
|
"Only %d cpus supported", CPU_SETSIZE);
|
|
while (isdigit(*l))
|
|
l++;
|
|
switch (state) {
|
|
case NONE:
|
|
lastnum = curnum;
|
|
state = NUM;
|
|
break;
|
|
case DASH:
|
|
for (; lastnum <= curnum; lastnum++)
|
|
CPU_SET(lastnum, mask);
|
|
state = NONE;
|
|
break;
|
|
case NUM:
|
|
default:
|
|
goto parserr;
|
|
}
|
|
continue;
|
|
}
|
|
switch (*l) {
|
|
case ',':
|
|
switch (state) {
|
|
case NONE:
|
|
break;
|
|
case NUM:
|
|
CPU_SET(curnum, mask);
|
|
state = NONE;
|
|
break;
|
|
case DASH:
|
|
goto parserr;
|
|
break;
|
|
}
|
|
break;
|
|
case '-':
|
|
if (state != NUM)
|
|
goto parserr;
|
|
state = DASH;
|
|
break;
|
|
default:
|
|
goto parserr;
|
|
}
|
|
l++;
|
|
}
|
|
switch (state) {
|
|
case NONE:
|
|
break;
|
|
case NUM:
|
|
CPU_SET(curnum, mask);
|
|
break;
|
|
case DASH:
|
|
goto parserr;
|
|
}
|
|
return;
|
|
parserr:
|
|
errx(EXIT_FAILURE, "Malformed cpu-list %s", list);
|
|
}
|
|
|
|
static void
|
|
printset(cpuset_t *mask)
|
|
{
|
|
int once;
|
|
int cpu;
|
|
|
|
for (once = 0, cpu = 0; cpu < CPU_SETSIZE; cpu++) {
|
|
if (CPU_ISSET(cpu, mask)) {
|
|
if (once == 0) {
|
|
printf("%d", cpu);
|
|
once = 1;
|
|
} else
|
|
printf(", %d", cpu);
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
static const char *whichnames[] = { NULL, "tid", "pid", "cpuset", "irq", "jail",
|
|
"domain" };
|
|
static const char *levelnames[] = { NULL, " root", " cpuset", "" };
|
|
|
|
static void
|
|
printaffinity(void)
|
|
{
|
|
cpuset_t mask;
|
|
|
|
if (cpuset_getaffinity(level, which, id, sizeof(mask), &mask) != 0)
|
|
err(EXIT_FAILURE, "getaffinity");
|
|
printf("%s %jd%s mask: ", whichnames[which], (intmax_t)id,
|
|
levelnames[level]);
|
|
printset(&mask);
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
static void
|
|
printsetid(void)
|
|
{
|
|
cpusetid_t setid;
|
|
|
|
/*
|
|
* Only LEVEL_WHICH && WHICH_CPUSET has a numbered id.
|
|
*/
|
|
if (level == CPU_LEVEL_WHICH && !sflag)
|
|
level = CPU_LEVEL_CPUSET;
|
|
if (cpuset_getid(level, which, id, &setid))
|
|
err(errno, "getid");
|
|
printf("%s %jd%s id: %d\n", whichnames[which], (intmax_t)id,
|
|
levelnames[level], setid);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
cpusetid_t setid;
|
|
cpuset_t mask;
|
|
lwpid_t tid;
|
|
pid_t pid;
|
|
int ch;
|
|
|
|
CPU_ZERO(&mask);
|
|
level = CPU_LEVEL_WHICH;
|
|
which = CPU_WHICH_PID;
|
|
id = pid = tid = setid = -1;
|
|
while ((ch = getopt(argc, argv, "Ccd:gij:l:p:rs:t:x:")) != -1) {
|
|
switch (ch) {
|
|
case 'C':
|
|
Cflag = 1;
|
|
break;
|
|
case 'c':
|
|
cflag = 1;
|
|
level = CPU_LEVEL_CPUSET;
|
|
break;
|
|
case 'd':
|
|
dflag = 1;
|
|
which = CPU_WHICH_DOMAIN;
|
|
id = atoi(optarg);
|
|
break;
|
|
case 'g':
|
|
gflag = 1;
|
|
break;
|
|
case 'i':
|
|
iflag = 1;
|
|
break;
|
|
case 'j':
|
|
jflag = 1;
|
|
which = CPU_WHICH_JAIL;
|
|
id = atoi(optarg);
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
parselist(optarg, &mask);
|
|
break;
|
|
case 'p':
|
|
pflag = 1;
|
|
which = CPU_WHICH_PID;
|
|
id = pid = atoi(optarg);
|
|
break;
|
|
case 'r':
|
|
level = CPU_LEVEL_ROOT;
|
|
rflag = 1;
|
|
break;
|
|
case 's':
|
|
sflag = 1;
|
|
which = CPU_WHICH_CPUSET;
|
|
id = setid = atoi(optarg);
|
|
break;
|
|
case 't':
|
|
tflag = 1;
|
|
which = CPU_WHICH_TID;
|
|
id = tid = atoi(optarg);
|
|
break;
|
|
case 'x':
|
|
xflag = 1;
|
|
which = CPU_WHICH_IRQ;
|
|
id = atoi(optarg);
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (gflag) {
|
|
if (argc || Cflag || lflag)
|
|
usage();
|
|
/* Only one identity specifier. */
|
|
if (dflag + jflag + xflag + sflag + pflag + tflag > 1)
|
|
usage();
|
|
if (iflag)
|
|
printsetid();
|
|
else
|
|
printaffinity();
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
if (dflag || iflag || rflag)
|
|
usage();
|
|
/*
|
|
* The user wants to run a command with a set and possibly cpumask.
|
|
*/
|
|
if (argc) {
|
|
if (Cflag || pflag || tflag || xflag || jflag)
|
|
usage();
|
|
if (sflag) {
|
|
if (cpuset_setid(CPU_WHICH_PID, -1, setid))
|
|
err(argc, "setid");
|
|
} else {
|
|
if (cpuset(&setid))
|
|
err(argc, "newid");
|
|
}
|
|
if (lflag) {
|
|
if (cpuset_setaffinity(level, CPU_WHICH_PID,
|
|
-1, sizeof(mask), &mask) != 0)
|
|
err(EXIT_FAILURE, "setaffinity");
|
|
}
|
|
errno = 0;
|
|
execvp(*argv, argv);
|
|
err(errno == ENOENT ? 127 : 126, "%s", *argv);
|
|
}
|
|
/*
|
|
* We're modifying something that presently exists.
|
|
*/
|
|
if (Cflag && (jflag || !pflag || sflag || tflag || xflag))
|
|
usage();
|
|
if (!lflag && cflag)
|
|
usage();
|
|
if (!lflag && !(Cflag || sflag))
|
|
usage();
|
|
/* You can only set a mask on a thread. */
|
|
if (tflag && (sflag | pflag | xflag | jflag))
|
|
usage();
|
|
/* You can only set a mask on an irq. */
|
|
if (xflag && (jflag | pflag | sflag | tflag))
|
|
usage();
|
|
if (Cflag) {
|
|
/*
|
|
* Create a new cpuset and move the specified process
|
|
* into the set.
|
|
*/
|
|
if (cpuset(&setid) < 0)
|
|
err(EXIT_FAILURE, "newid");
|
|
sflag = 1;
|
|
}
|
|
if (pflag && sflag) {
|
|
if (cpuset_setid(CPU_WHICH_PID, pid, setid))
|
|
err(EXIT_FAILURE, "setid");
|
|
/*
|
|
* If the user specifies a set and a list we want the mask
|
|
* to effect the pid and not the set.
|
|
*/
|
|
which = CPU_WHICH_PID;
|
|
id = pid;
|
|
}
|
|
if (lflag) {
|
|
if (cpuset_setaffinity(level, which, id, sizeof(mask),
|
|
&mask) != 0)
|
|
err(EXIT_FAILURE, "setaffinity");
|
|
}
|
|
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr,
|
|
"usage: cpuset [-l cpu-list] [-s setid] cmd ...\n");
|
|
fprintf(stderr,
|
|
" cpuset [-l cpu-list] [-s setid] -p pid\n");
|
|
fprintf(stderr,
|
|
" cpuset [-c] [-l cpu-list] -C -p pid\n");
|
|
fprintf(stderr,
|
|
" cpuset [-c] [-l cpu-list] [-j jailid | -p pid | -t tid | -s setid | -x irq]\n");
|
|
fprintf(stderr,
|
|
" cpuset -g [-cir] [-d domain | -j jailid | -p pid | -t tid | -s setid |\n"
|
|
" -x irq]\n");
|
|
exit(1);
|
|
}
|