18a272653SPeter Holm#!/bin/sh 28a272653SPeter Holm 38a272653SPeter Holm# 48a272653SPeter Holm# Copyright (c) 2015 EMC Corp. 58a272653SPeter Holm# All rights reserved. 68a272653SPeter Holm# 78a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 88a272653SPeter Holm# modification, are permitted provided that the following conditions 98a272653SPeter Holm# are met: 108a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 118a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 128a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 138a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 148a272653SPeter Holm# documentation and/or other materials provided with the distribution. 158a272653SPeter Holm# 168a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 178a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 188a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 198a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 208a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 218a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 228a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 238a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 248a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 258a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 268a272653SPeter Holm# SUCH DAMAGE. 278a272653SPeter Holm# 288a272653SPeter Holm 298a272653SPeter Holm# contigmalloc(9) / contigfree(9) test scenario. 308a272653SPeter Holm# Regression test for allocations >= 2 GiB. 318a272653SPeter Holm# "panic: vm_page_insert_after: mpred doesn't precede pindex" seen. 328a272653SPeter Holm# Fixed by r284207. 338a272653SPeter Holm 348a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 358a272653SPeter Holm[ -d /usr/src/sys ] || exit 0 368a272653SPeter Holmbuilddir=`sysctl kern.version | grep @ | sed 's/.*://'` 378a272653SPeter Holm[ -d "$builddir" ] && export KERNBUILDDIR=$builddir || exit 0 388a272653SPeter Holmexport SYSDIR=`echo $builddir | sed 's#/sys.*#/sys#'` 398a272653SPeter Holm 408a272653SPeter Holm. ../default.cfg 418a272653SPeter Holm 428a272653SPeter Holmodir=`pwd` 438a272653SPeter Holmdir=/tmp/contigmalloc 448a272653SPeter Holmrm -rf $dir; mkdir -p $dir 458a272653SPeter Holmcat > $dir/ctest2.c <<EOF 468a272653SPeter Holm#include <sys/param.h> 478a272653SPeter Holm#include <sys/syscall.h> 488a272653SPeter Holm 498a272653SPeter Holm#include <err.h> 508a272653SPeter Holm#include <errno.h> 518a272653SPeter Holm#include <stdio.h> 528a272653SPeter Holm#include <stdlib.h> 538a272653SPeter Holm#include <unistd.h> 548a272653SPeter Holm 558a272653SPeter Holm#define TALLOC 1 568a272653SPeter Holm#define TFREE 2 578a272653SPeter Holm 588a272653SPeter Holmvoid *p; 598a272653SPeter Holmlong size; 608a272653SPeter Holmint n; 618a272653SPeter Holm 628a272653SPeter Holmvoid 638a272653SPeter Holmtest(int argc, char *argv[]) 648a272653SPeter Holm{ 658a272653SPeter Holm long mw; 668a272653SPeter Holm int no, ps, res; 678a272653SPeter Holm 688a272653SPeter Holm if (argc == 3) { 698a272653SPeter Holm no = atoi(argv[1]); 708a272653SPeter Holm mw = atol(argv[2]); 718a272653SPeter Holm } 728a272653SPeter Holm if (argc != 3 || no == 0 || mw == 0) 738a272653SPeter Holm errx(1, "Usage: %s <syscall number> <max wired>", argv[0]); 748a272653SPeter Holm 758a272653SPeter Holm ps = getpagesize(); 768a272653SPeter Holm size = mw / 100 * 80 * ps; /* Use 80% of vm.max_user_wired */ 778a272653SPeter Holm while (size > 0) { 788a272653SPeter Holm res = syscall(no, TALLOC, &p, &size); 798a272653SPeter Holm if (res == -1) { 808a272653SPeter Holm if (errno != ENOMEM) 818a272653SPeter Holm warn("contigmalloc(%lu pages) failed", 828a272653SPeter Holm size); 838a272653SPeter Holm } else { 848a272653SPeter Holm#if defined(TEST) 858a272653SPeter Holm fprintf(stderr, "pre contigmalloc(%lu pages): %lu MiB\n", 868a272653SPeter Holm size, size * ps / 1024 / 1024); 878a272653SPeter Holm#endif 888a272653SPeter Holm res = syscall(no, TFREE, &p, &size); 898a272653SPeter Holm#if defined(TEST) 908a272653SPeter Holm fprintf(stderr, "contigfree(%lu pages)\n", 918a272653SPeter Holm size); 928a272653SPeter Holm#endif 938a272653SPeter Holm } 948a272653SPeter Holm size /= 2; 958a272653SPeter Holm } 968a272653SPeter Holm} 978a272653SPeter Holm 988a272653SPeter Holmint 998a272653SPeter Holmmain(int argc, char *argv[]) 1008a272653SPeter Holm{ 1018a272653SPeter Holm test(argc, argv); 1028a272653SPeter Holm 1038a272653SPeter Holm return (0); 1048a272653SPeter Holm} 1058a272653SPeter Holm 1068a272653SPeter HolmEOF 1078a272653SPeter Holmmycc -o /tmp/ctest2 -Wall -Wextra -O0 -g $dir/ctest2.c || exit 1 1088a272653SPeter Holmrm $dir/ctest2.c 1098a272653SPeter Holm 1108a272653SPeter Holmcd $dir 1118a272653SPeter Holmcat > Makefile <<EOF 1128a272653SPeter HolmKMOD= cmalloc2 1138a272653SPeter HolmSRCS= cmalloc2.c 1148a272653SPeter Holm 1158a272653SPeter Holm.include <bsd.kmod.mk> 1168a272653SPeter HolmEOF 1178a272653SPeter Holm 1188a272653SPeter Holmsed '1,/^EOF2/d' < $odir/$0 > cmalloc2.c 1198a272653SPeter Holmmake depend all || exit 1 1208a272653SPeter Holmkldload $dir/cmalloc2.ko || exit 1 1218a272653SPeter Holm 1228a272653SPeter Holmcd $odir 1238a272653SPeter Holmmw=$((`sysctl -n vm.max_user_wired` - \ 1248a272653SPeter Holm `sysctl -n vm.stats.vm.v_user_wire_count`)) || exit 1 1258a272653SPeter Holm/tmp/ctest2 `sysctl -n debug.cmalloc_offset` $mw #2>&1 | tail -5 1268a272653SPeter Holmkldunload $dir/cmalloc2.ko 1278a272653SPeter Holmrm -rf $dir /tmp/ctest2 1288a272653SPeter Holmexit 0 1298a272653SPeter Holm 1308a272653SPeter HolmEOF2 1318a272653SPeter Holm#include <sys/param.h> 1328a272653SPeter Holm#include <sys/kernel.h> 1338a272653SPeter Holm#include <sys/malloc.h> 1348a272653SPeter Holm#include <sys/module.h> 1358a272653SPeter Holm#include <sys/proc.h> 1368a272653SPeter Holm#include <sys/sysctl.h> 1378a272653SPeter Holm#include <sys/sysent.h> 1388a272653SPeter Holm#include <sys/sysproto.h> 1398a272653SPeter Holm#include <sys/systm.h> 1408a272653SPeter Holm 1418a272653SPeter Holm#define TALLOC 1 1428a272653SPeter Holm#define TFREE 2 1438a272653SPeter Holm 1448a272653SPeter Holm/* 1458a272653SPeter Holm * Hook up a syscall for contigmalloc testing. 1468a272653SPeter Holm */ 1478a272653SPeter Holm 1488a272653SPeter Holmstruct cmalloc_args { 1498a272653SPeter Holm int a_op; 1508a272653SPeter Holm void *a_ptr; 1518a272653SPeter Holm void *a_size; 1528a272653SPeter Holm}; 1538a272653SPeter Holm 1548a272653SPeter Holmstatic int 1558a272653SPeter Holmcmalloc(struct thread *td, struct cmalloc_args *uap) 1568a272653SPeter Holm{ 1578a272653SPeter Holm void *p; 1588a272653SPeter Holm unsigned long size; 1598a272653SPeter Holm int error; 1608a272653SPeter Holm 1618a272653SPeter Holm error = copyin(uap->a_size, &size, sizeof(size)); 1628a272653SPeter Holm if (error != 0) { 1638a272653SPeter Holm return (error); 1648a272653SPeter Holm } 1658a272653SPeter Holm switch (uap->a_op) { 1668a272653SPeter Holm case TFREE: 1678a272653SPeter Holm error = copyin(uap->a_ptr, &p, sizeof(p)); 1688a272653SPeter Holm if (error == 0) { 1698a272653SPeter Holm if (p != NULL) 1708a272653SPeter Holm contigfree(p, size, M_TEMP); 1718a272653SPeter Holm } 1728a272653SPeter Holm return (error); 1738a272653SPeter Holm 1748a272653SPeter Holm case TALLOC: 1758a272653SPeter Holm p = contigmalloc(size, M_TEMP, M_NOWAIT, 0ul, ~0ul, 4096, 0); 1768a272653SPeter Holm if (p != NULL) { 1778a272653SPeter Holm error = copyout(&p, uap->a_ptr, sizeof(p)); 1788a272653SPeter Holm return (error); 1798a272653SPeter Holm } 1808a272653SPeter Holm return (ENOMEM); 1818a272653SPeter Holm } 1828a272653SPeter Holm return (EINVAL); 1838a272653SPeter Holm} 1848a272653SPeter Holm 1858a272653SPeter Holm/* 1868a272653SPeter Holm * The sysent for the new syscall 1878a272653SPeter Holm */ 1888a272653SPeter Holmstatic struct sysent cmalloc_sysent = { 1898a272653SPeter Holm .sy_narg = 3, /* sy_narg */ 1908a272653SPeter Holm .sy_call = (sy_call_t *) cmalloc /* sy_call */ 1918a272653SPeter Holm}; 1928a272653SPeter Holm 1938a272653SPeter Holm/* 1948a272653SPeter Holm * The offset in sysent where the syscall is allocated. 1958a272653SPeter Holm */ 1968a272653SPeter Holmstatic int cmalloc_offset = NO_SYSCALL; 1978a272653SPeter Holm 1988a272653SPeter HolmSYSCTL_INT(_debug, OID_AUTO, cmalloc_offset, CTLFLAG_RD, &cmalloc_offset, 0, 1998a272653SPeter Holm "cmalloc syscall number"); 2008a272653SPeter Holm 2018a272653SPeter Holm/* 2028a272653SPeter Holm * The function called at load/unload. 2038a272653SPeter Holm */ 2048a272653SPeter Holm 2058a272653SPeter Holmstatic int 2068a272653SPeter Holmcmalloc_load(struct module *module, int cmd, void *arg) 2078a272653SPeter Holm{ 2088a272653SPeter Holm int error = 0; 2098a272653SPeter Holm 2108a272653SPeter Holm switch (cmd) { 2118a272653SPeter Holm case MOD_LOAD : 2128a272653SPeter Holm break; 2138a272653SPeter Holm case MOD_UNLOAD : 2148a272653SPeter Holm break; 2158a272653SPeter Holm default : 2168a272653SPeter Holm error = EOPNOTSUPP; 2178a272653SPeter Holm break; 2188a272653SPeter Holm } 2198a272653SPeter Holm return (error); 2208a272653SPeter Holm} 2218a272653SPeter Holm 2228a272653SPeter HolmSYSCALL_MODULE(cmalloc_syscall, &cmalloc_offset, &cmalloc_sysent, 2238a272653SPeter Holm cmalloc_load, NULL); 224