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Code Issues Releases Activity

Remove the arbitrary binding of the pagedaemon threads to the domains,

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update the comment accordingly and make it more precise.

Requested and reviewed by:	jeff (previous version)
This commit is contained in:
Konstantin Belousov 2013-08-17 07:10:01 +00:00
parent 3147331e16
commit 949c918635
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=254439
1 changed files with 4 additions and 23 deletions
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27
sys/vm/vm_pageout.c
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@ -1575,35 +1575,16 @@ static void
vm_pageout_worker(void *arg)
{
struct vm_domain *domain;
struct pcpu *pc;
int cpu, domidx;
int domidx;
domidx = (uintptr_t)arg;
domain = &vm_dom[domidx];
/*
* XXXKIB The bind is rather arbitrary. With some minor
* complications, we could assign the cpuset consisting of all
* CPUs in the same domain. In fact, it even does not matter
* if the CPU we bind to is in the affinity domain of this
* page queue, we only need to establish the fair distribution
* of pagedaemon threads among CPUs.
*
* XXXKIB It would be useful to allocate vm_pages for the
* domain from the domain, and put pcpu area into the page
* owned by the domain.
* XXXKIB It could be useful to bind pageout daemon threads to
* the cores belonging to the domain, from which vm_page_array
* is allocated.
*/
if (mem_affinity != NULL) {
CPU_FOREACH(cpu) {
pc = pcpu_find(cpu);
if (pc->pc_domain == domidx) {
thread_lock(curthread);
sched_bind(curthread, cpu);
thread_unlock(curthread);
break;
}
}
}
KASSERT(domain->vmd_segs != 0, ("domain without segments"));
vm_pageout_init_marker(&domain->vmd_marker, PQ_INACTIVE);