170 lines
4.1 KiB
C
170 lines
4.1 KiB
C
/*-
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* Copyright (c) 2015, Adrian Chadd <adrian@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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/jail.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/refcount.h>
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#include <sys/sched.h>
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#include <sys/smp.h>
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#include <sys/syscallsubr.h>
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#include <sys/cpuset.h>
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#include <sys/sx.h>
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#include <sys/queue.h>
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#include <sys/libkern.h>
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#include <sys/limits.h>
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#include <sys/bus.h>
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#include <sys/interrupt.h>
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#include <vm/uma.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#include <vm/vm_param.h>
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#include <vm/vm_domain.h>
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int
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sys_numa_setaffinity(struct thread *td, struct numa_setaffinity_args *uap)
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{
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int error;
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struct vm_domain_policy vp;
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struct thread *ttd;
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struct proc *p;
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struct cpuset *set;
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set = NULL;
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p = NULL;
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/*
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* Copy in just the policy information into the policy
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* struct. Userland only supplies vm_domain_policy_entry.
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*/
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error = copyin(uap->policy, &vp.p, sizeof(vp.p));
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if (error)
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goto out;
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/*
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* Ensure the seq number is zero - otherwise seq.h
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* may get very confused.
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*/
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vp.seq = 0;
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/*
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* Validate policy.
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*/
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if (vm_domain_policy_validate(&vp) != 0) {
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error = EINVAL;
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goto out;
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}
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/*
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* Go find the desired proc/tid for this operation.
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*/
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error = cpuset_which(uap->which, uap->id, &p,
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&ttd, &set);
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if (error)
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goto out;
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/* Only handle CPU_WHICH_TID and CPU_WHICH_PID */
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/*
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* XXX if cpuset_which is called with WHICH_CPUSET and NULL cpuset,
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* it'll return ESRCH. We should just return EINVAL.
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*/
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switch (uap->which) {
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case CPU_WHICH_TID:
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vm_domain_policy_copy(&ttd->td_vm_dom_policy, &vp);
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break;
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case CPU_WHICH_PID:
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vm_domain_policy_copy(&p->p_vm_dom_policy, &vp);
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break;
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default:
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error = EINVAL;
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break;
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}
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PROC_UNLOCK(p);
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out:
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if (set)
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cpuset_rel(set);
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return (error);
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}
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int
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sys_numa_getaffinity(struct thread *td, struct numa_getaffinity_args *uap)
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{
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int error;
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struct vm_domain_policy vp;
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struct thread *ttd;
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struct proc *p;
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struct cpuset *set;
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set = NULL;
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p = NULL;
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error = cpuset_which(uap->which, uap->id, &p,
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&ttd, &set);
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if (error)
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goto out;
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/* Only handle CPU_WHICH_TID and CPU_WHICH_PID */
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/*
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* XXX if cpuset_which is called with WHICH_CPUSET and NULL cpuset,
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* it'll return ESRCH. We should just return EINVAL.
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*/
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switch (uap->which) {
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case CPU_WHICH_TID:
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vm_domain_policy_localcopy(&vp, &ttd->td_vm_dom_policy);
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break;
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case CPU_WHICH_PID:
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vm_domain_policy_localcopy(&vp, &p->p_vm_dom_policy);
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break;
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default:
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error = EINVAL;
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break;
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}
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if (p)
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PROC_UNLOCK(p);
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/*
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* Copy out only the vm_domain_policy_entry part.
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*/
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if (error == 0)
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error = copyout(&vp.p, uap->policy, sizeof(vp.p));
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out:
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if (set)
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cpuset_rel(set);
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return (error);
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}
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