Add files for r327895
Implement 'domainset', a cpuset based NUMA policy mechanism. This allows userspace to control NUMA policy administratively and programmatically. Implement domainset based iterators in the page layer. Remove the now legacy numa_* syscalls. Cleanup some header polution created by having seq.h in proc.h. Reviewed by: markj, kib Discussed with: alc Tested by: pho Sponsored by: Netflix, Dell/EMC Isilon Differential Revision: https://reviews.freebsd.org/D13403
This commit is contained in:
Jeff Roberson
parent
3f289c3fcf
commit
7b11a48326
60
sys/sys/_domainset.h
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60
sys/sys/_domainset.h
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@ -0,0 +1,60 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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||||
* are met:
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice unmodified, this list of conditions, and the following
|
||||
* disclaimer.
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||||
* 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.
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||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS__DOMAINSET_H_
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#define _SYS__DOMAINSET_H_
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#include <sys/_bitset.h>
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#ifdef _KERNEL
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#define DOMAINSET_SETSIZE MAXMEMDOM
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#endif
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#define DOMAINSET_MAXSIZE 256
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#ifndef DOMAINSET_SETSIZE
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#define DOMAINSET_SETSIZE DOMAINSET_MAXSIZE
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#endif
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BITSET_DEFINE(_domainset, DOMAINSET_SETSIZE);
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typedef struct _domainset domainset_t;
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/*
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* This structure is intended to be embedded in objects which have policy
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* attributes. Each object keeps its own iterator so round-robin is
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* synchronized and accurate.
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*/
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struct domainset;
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struct domainset_ref {
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struct domainset * volatile dr_policy;
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int dr_iterator;
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};
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#endif /* !_SYS__DOMAINSET_H_ */
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102
sys/sys/domainset.h
Normal file
102
sys/sys/domainset.h
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@ -0,0 +1,102 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_DOMAINSETSET_H_
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#define _SYS_DOMAINSETSET_H_
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#include <sys/_domainset.h>
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#include <sys/bitset.h>
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#define _NDOMAINSETBITS _BITSET_BITS
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#define _NDOMAINSETWORDS __bitset_words(DOMAINSET_SETSIZE)
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#define DOMAINSETSETBUFSIZ ((2 + sizeof(long) * 2) * _NDOMAINSETWORDS)
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#define DOMAINSET_CLR(n, p) BIT_CLR(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_COPY(f, t) BIT_COPY(DOMAINSET_SETSIZE, f, t)
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#define DOMAINSET_ISSET(n, p) BIT_ISSET(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_SET(n, p) BIT_SET(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_ZERO(p) BIT_ZERO(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_FILL(p) BIT_FILL(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_SETOF(n, p) BIT_SETOF(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_EMPTY(p) BIT_EMPTY(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_ISFULLSET(p) BIT_ISFULLSET(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_SUBSET(p, c) BIT_SUBSET(DOMAINSET_SETSIZE, p, c)
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#define DOMAINSET_OVERLAP(p, c) BIT_OVERLAP(DOMAINSET_SETSIZE, p, c)
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#define DOMAINSET_CMP(p, c) BIT_CMP(DOMAINSET_SETSIZE, p, c)
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#define DOMAINSET_OR(d, s) BIT_OR(DOMAINSET_SETSIZE, d, s)
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#define DOMAINSET_AND(d, s) BIT_AND(DOMAINSET_SETSIZE, d, s)
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#define DOMAINSET_NAND(d, s) BIT_NAND(DOMAINSET_SETSIZE, d, s)
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#define DOMAINSET_CLR_ATOMIC(n, p) BIT_CLR_ATOMIC(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_SET_ATOMIC(n, p) BIT_SET_ATOMIC(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_SET_ATOMIC_ACQ(n, p) \
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BIT_SET_ATOMIC_ACQ(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_AND_ATOMIC(n, p) BIT_AND_ATOMIC(DOMAINSET_SETSIZE, n, p)
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#define DOMAINSET_OR_ATOMIC(d, s) BIT_OR_ATOMIC(DOMAINSET_SETSIZE, d, s)
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#define DOMAINSET_COPY_STORE_REL(f, t) \
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BIT_COPY_STORE_REL(DOMAINSET_SETSIZE, f, t)
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#define DOMAINSET_FFS(p) BIT_FFS(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_FLS(p) BIT_FLS(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_COUNT(p) BIT_COUNT(DOMAINSET_SETSIZE, p)
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#define DOMAINSET_FSET BITSET_FSET(_NDOMAINSETWORDS)
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#define DOMAINSET_T_INITIALIZER BITSET_T_INITIALIZER
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#define DOMAINSET_POLICY_INVALID 0
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#define DOMAINSET_POLICY_ROUNDROBIN 1
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#define DOMAINSET_POLICY_FIRSTTOUCH 2
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#define DOMAINSET_POLICY_PREFER 3
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#define DOMAINSET_POLICY_MAX DOMAINSET_POLICY_PREFER
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#ifdef _KERNEL
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#include <sys/queue.h>
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LIST_HEAD(domainlist, domainset);
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struct domainset {
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LIST_ENTRY(domainset) ds_link;
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domainset_t ds_mask; /* allowed domains. */
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uint16_t ds_policy; /* Policy type. */
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int16_t ds_prefer; /* Preferred domain or -1. */
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uint16_t ds_cnt; /* popcnt from above. */
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uint16_t ds_max; /* Maximum domain in set. */
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};
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void domainset_zero(void);
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#else
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__BEGIN_DECLS
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int cpuset_getdomain(cpulevel_t, cpuwhich_t, id_t, size_t, domainset_t *,
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int *);
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int cpuset_setdomain(cpulevel_t, cpuwhich_t, id_t, size_t,
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const domainset_t *, int);
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__END_DECLS
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#endif
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#endif /* !_SYS_DOMAINSETSET_H_ */
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243
sys/vm/vm_domainset.c
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243
sys/vm/vm_domainset.c
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@ -0,0 +1,243 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_vm.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bitset.h>
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#include <sys/domainset.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/malloc.h>
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#include <sys/vmmeter.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_domainset.h>
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#include <vm/vm_object.h>
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#include <vm/vm_page.h>
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#include <vm/vm_phys.h>
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/*
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* Iterators are written such that the first nowait pass has as short a
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* codepath as possible to eliminate bloat from the allocator. It is
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* assumed that most allocations are successful.
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*/
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/*
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* Determine which policy is to be used for this allocation.
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*/
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static void
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vm_domainset_iter_domain(struct vm_domainset_iter *di, struct vm_object *obj)
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{
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struct domainset *domain;
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/*
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* object policy takes precedence over thread policy. The policies
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* are immutable and unsynchronized. Updates can race but pointer
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* loads are assumed to be atomic.
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*/
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if (obj != NULL && (domain = obj->domain.dr_policy) != NULL) {
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di->di_domain = domain;
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di->di_iter = &obj->domain.dr_iterator;
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} else {
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di->di_domain = curthread->td_domain.dr_policy;
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di->di_iter = &curthread->td_domain.dr_iterator;
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}
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}
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static void
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vm_domainset_iter_rr(struct vm_domainset_iter *di, int *domain)
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{
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int d;
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d = *di->di_iter;
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do {
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d = (d + 1) % di->di_domain->ds_max;
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} while (!DOMAINSET_ISSET(d, &di->di_domain->ds_mask));
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*di->di_iter = *domain = d;
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}
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static void
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vm_domainset_iter_prefer(struct vm_domainset_iter *di, int *domain)
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{
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int d;
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d = *di->di_iter;
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do {
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d = (d + 1) % di->di_domain->ds_max;
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} while (!DOMAINSET_ISSET(d, &di->di_domain->ds_mask) ||
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d == di->di_domain->ds_prefer);
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*di->di_iter = *domain = d;
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}
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static void
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vm_domainset_iter_next(struct vm_domainset_iter *di, int *domain)
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{
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KASSERT(di->di_n > 0,
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("vm_domainset_iter_first: Invalid n %d", di->di_n));
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switch (di->di_domain->ds_policy) {
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case DOMAINSET_POLICY_FIRSTTOUCH:
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/*
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* To prevent impossible allocations we convert an invalid
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* first-touch to round-robin.
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*/
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/* FALLTHROUGH */
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case DOMAINSET_POLICY_ROUNDROBIN:
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vm_domainset_iter_rr(di, domain);
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break;
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case DOMAINSET_POLICY_PREFER:
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vm_domainset_iter_prefer(di, domain);
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break;
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default:
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panic("vm_domainset_iter_first: Unknown policy %d",
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di->di_domain->ds_policy);
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}
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KASSERT(*domain < vm_ndomains,
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("vm_domainset_iter_next: Invalid domain %d", *domain));
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}
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static void
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vm_domainset_iter_first(struct vm_domainset_iter *di, int *domain)
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{
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switch (di->di_domain->ds_policy) {
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case DOMAINSET_POLICY_FIRSTTOUCH:
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*domain = PCPU_GET(domain);
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if (DOMAINSET_ISSET(*domain, &di->di_domain->ds_mask)) {
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di->di_n = 1;
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break;
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}
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/*
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* To prevent impossible allocations we convert an invalid
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* first-touch to round-robin.
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*/
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/* FALLTHROUGH */
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case DOMAINSET_POLICY_ROUNDROBIN:
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di->di_n = di->di_domain->ds_cnt;
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vm_domainset_iter_rr(di, domain);
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break;
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case DOMAINSET_POLICY_PREFER:
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*domain = di->di_domain->ds_prefer;
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di->di_n = di->di_domain->ds_cnt;
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break;
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default:
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panic("vm_domainset_iter_first: Unknown policy %d",
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di->di_domain->ds_policy);
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}
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KASSERT(di->di_n > 0,
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("vm_domainset_iter_first: Invalid n %d", di->di_n));
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KASSERT(*domain < vm_ndomains,
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("vm_domainset_iter_first: Invalid domain %d", *domain));
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}
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void
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vm_domainset_iter_page_init(struct vm_domainset_iter *di, struct vm_object *obj,
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int *domain, int *req)
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{
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vm_domainset_iter_domain(di, obj);
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di->di_flags = *req;
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*req = (di->di_flags & ~(VM_ALLOC_WAITOK | VM_ALLOC_WAITFAIL)) |
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VM_ALLOC_NOWAIT;
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vm_domainset_iter_first(di, domain);
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}
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int
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vm_domainset_iter_page(struct vm_domainset_iter *di, int *domain, int *req)
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{
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/*
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* If we exhausted all options with NOWAIT and did a WAITFAIL it
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* is time to return an error to the caller.
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*/
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if ((*req & VM_ALLOC_WAITFAIL) != 0)
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return (ENOMEM);
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/* If there are more domains to visit we run the iterator. */
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if (--di->di_n != 0) {
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vm_domainset_iter_next(di, domain);
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return (0);
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}
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/* If we visited all domains and this was a NOWAIT we return error. */
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if ((di->di_flags & (VM_ALLOC_WAITOK | VM_ALLOC_WAITFAIL)) == 0)
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return (ENOMEM);
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/*
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* We have visited all domains with non-blocking allocations, try
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* from the beginning with a blocking allocation.
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*/
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vm_domainset_iter_first(di, domain);
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*req = di->di_flags;
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return (0);
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}
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void
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vm_domainset_iter_malloc_init(struct vm_domainset_iter *di,
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struct vm_object *obj, int *domain, int *flags)
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{
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vm_domainset_iter_domain(di, obj);
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di->di_flags = *flags;
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*flags = (di->di_flags & ~M_WAITOK) | M_NOWAIT;
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vm_domainset_iter_first(di, domain);
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}
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int
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vm_domainset_iter_malloc(struct vm_domainset_iter *di, int *domain, int *flags)
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{
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/* If there are more domains to visit we run the iterator. */
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if (--di->di_n != 0) {
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vm_domainset_iter_next(di, domain);
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return (0);
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}
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/* If we visited all domains and this was a NOWAIT we return error. */
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if ((di->di_flags & M_WAITOK) == 0)
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return (ENOMEM);
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/*
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* We have visited all domains with non-blocking allocations, try
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* from the beginning with a blocking allocation.
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*/
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vm_domainset_iter_first(di, domain);
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*flags = di->di_flags;
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return (0);
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}
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47
sys/vm/vm_domainset.h
Normal file
47
sys/vm/vm_domainset.h
Normal file
@ -0,0 +1,47 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org>
|
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* 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 unmodified, 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 ``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 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
#ifndef __VM_DOMAINSET_H__
|
||||
#define __VM_DOMAINSET_H__
|
||||
|
||||
struct vm_domainset_iter {
|
||||
struct domainset *di_domain;
|
||||
int *di_iter;
|
||||
int di_flags;
|
||||
int di_n;
|
||||
};
|
||||
|
||||
int vm_domainset_iter_page(struct vm_domainset_iter *, int *, int *);
|
||||
void vm_domainset_iter_page_init(struct vm_domainset_iter *,
|
||||
struct vm_object *, int *, int *);
|
||||
int vm_domainset_iter_malloc(struct vm_domainset_iter *, int *, int *);
|
||||
void vm_domainset_iter_malloc_init(struct vm_domainset_iter *,
|
||||
struct vm_object *, int *, int *);
|
||||
|
||||
#endif /* __VM_DOMAINSET_H__ */
|
||||
Loading…
x
Reference in New Issue
Block a user