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