Date: Tue, 13 Mar 2018 10:40:12 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r330839 - user/pho/stress2/misc Message-ID: <201803131040.w2DAeCqM029075@repo.freebsd.org>
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Author: pho Date: Tue Mar 13 10:40:11 2018 New Revision: 330839 URL: https://svnweb.freebsd.org/changeset/base/330839 Log: Set KERNBUILDDIR and SYSDIR when building kernel modules. Added a variation of the contigmalloc() tests. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/contigmalloc3.sh (contents, props changed) Modified: user/pho/stress2/misc/contigmalloc.sh user/pho/stress2/misc/contigmalloc2.sh Modified: user/pho/stress2/misc/contigmalloc.sh ============================================================================== --- user/pho/stress2/misc/contigmalloc.sh Tue Mar 13 10:00:14 2018 (r330838) +++ user/pho/stress2/misc/contigmalloc.sh Tue Mar 13 10:40:11 2018 (r330839) @@ -45,6 +45,9 @@ [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 [ -d /usr/src/sys ] || exit 0 +builddir=`sysctl kern.version | grep @ | sed 's/.*://'` +[ -d "$builddir" ] && export KERNBUILDDIR=$builddir || exit 0 +export SYSDIR=`echo $builddir | sed 's#/sys.*#/sys#'` . ../default.cfg Modified: user/pho/stress2/misc/contigmalloc2.sh ============================================================================== --- user/pho/stress2/misc/contigmalloc2.sh Tue Mar 13 10:00:14 2018 (r330838) +++ user/pho/stress2/misc/contigmalloc2.sh Tue Mar 13 10:40:11 2018 (r330839) @@ -35,6 +35,9 @@ [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 [ -d /usr/src/sys ] || exit 0 +builddir=`sysctl kern.version | grep @ | sed 's/.*://'` +[ -d "$builddir" ] && export KERNBUILDDIR=$builddir || exit 0 +export SYSDIR=`echo $builddir | sed 's#/sys.*#/sys#'` . ../default.cfg Added: user/pho/stress2/misc/contigmalloc3.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/contigmalloc3.sh Tue Mar 13 10:40:11 2018 (r330839) @@ -0,0 +1,223 @@ +#!/bin/sh + +# +# Copyright (c) 2014 EMC Corp. +# 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 AUTHOR 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 AUTHOR 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. +# +# $FreeBSD$ +# + +# contigmalloc(9) / contigfree(9) test scenario. +# Test allocation with 1GB + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +[ -d /usr/src/sys ] || exit 0 +builddir=`sysctl kern.version | grep @ | sed 's/.*://'` +[ -d "$builddir" ] && export KERNBUILDDIR=$builddir || exit 0 +export SYSDIR=`echo $builddir | sed 's#/sys.*#/sys#'` + +. ../default.cfg + +odir=`pwd` +dir=/tmp/contigmalloc +rm -rf $dir; mkdir -p $dir +cat > $dir/ctest.c <<EOF +#include <sys/param.h> +#include <sys/syscall.h> + +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +#define MAXBUF (1LL * 1024 * 1024 * 1024) /* Max buffer size */ +#define TALLOC 1 +#define TFREE 2 + +void +test(int argc, char *argv[]) +{ + long mw, size; + int i, no, ps, res; + char *cp; + + if (argc == 3) { + no = atoi(argv[1]); + mw = atol(argv[2]); + } + if (argc != 3 || no == 0 || mw == 0) + errx(1, "Usage: %s <syscall number> <max wired>", argv[0]); + + ps = getpagesize(); + if (mw < MAXBUF / ps) { + fprintf(stderr, "max_wired too small for this test\n"); + exit (0); + } + i = 0; + size = round_page(MAXBUF); + res = syscall(no, TALLOC, &cp, &size); + if (res == -1) { + err(1, "contigmalloc(%lu MB) failed", + size / 1024 / 1024); + } else { +#if defined(TEST) + fprintf(stderr, "contigmalloc(%lu pages) %luMB\n", + size / ps, size / 1024 / 1024); +#endif + } + + res = syscall(no, TFREE, &cp, &size); +#if defined(TEST) + fprintf(stderr, "contigfree(%lu pages) %luMB\n", + size / ps, size / 1024 / 1024); +#endif +} + +int +main(int argc, char *argv[]) +{ + + test(argc, argv); + + return (0); +} + +EOF +mycc -o /tmp/ctest -Wall -Wextra -O0 -g $dir/ctest.c || exit 1 +rm $dir/ctest.c + +cd $dir +cat > Makefile <<EOF +KMOD= cmalloc +SRCS= cmalloc.c + +.include <bsd.kmod.mk> +EOF + +sed '1,/^EOF2/d' < $odir/$0 > cmalloc.c +make || exit 1 +kldload $dir/cmalloc.ko || exit 1 + +cd $odir +mw=`sysctl -n vm.max_wired` || exit 1 +/tmp/ctest `sysctl -n debug.cmalloc_offset` $mw 2>&1 | tail -5 +kldunload $dir/cmalloc.ko +rm -rf $dir /tmp/ctest +exit 0 + +EOF2 +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/proc.h> +#include <sys/sysctl.h> +#include <sys/sysent.h> +#include <sys/sysproto.h> +#include <sys/systm.h> + +#define TALLOC 1 +#define TFREE 2 + +/* + * Hook up a syscall for contigmalloc testing. + */ + +struct cmalloc_args { + int a_op; + void *a_ptr; + void *a_size; +}; + +static int +cmalloc(struct thread *td, struct cmalloc_args *uap) +{ + void *p; + unsigned long size; + int error; + + error = copyin(uap->a_size, &size, sizeof(size)); + if (error != 0) { + return (error); + } + switch (uap->a_op) { + case TFREE: + error = copyin(uap->a_ptr, &p, sizeof(p)); + if (error == 0) { + if (p != NULL) + contigfree(p, size, M_TEMP); + } + return (error); + + case TALLOC: + p = contigmalloc(size, M_TEMP, M_NOWAIT, 0ul, ~0ul, 4096, 0); + if (p != NULL) { + error = copyout(&p, uap->a_ptr, sizeof(p)); + return (error); + } + return (ENOMEM); + } + return (EINVAL); +} + +/* + * The sysent for the new syscall + */ +static struct sysent cmalloc_sysent = { + 3, /* sy_narg */ + (sy_call_t *) cmalloc /* sy_call */ +}; + +/* + * The offset in sysent where the syscall is allocated. + */ +static int cmalloc_offset = NO_SYSCALL; + +SYSCTL_INT(_debug, OID_AUTO, cmalloc_offset, CTLFLAG_RD, &cmalloc_offset, 0, + "cmalloc syscall number"); + +/* + * The function called at load/unload. + */ + +static int +cmalloc_load(struct module *module, int cmd, void *arg) +{ + int error = 0; + + switch (cmd) { + case MOD_LOAD : + break; + case MOD_UNLOAD : + break; + default : + error = EOPNOTSUPP; + break; + } + return (error); +} + +SYSCALL_MODULE(cmalloc_syscall, &cmalloc_offset, &cmalloc_sysent, + cmalloc_load, NULL);
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