Author: markj
Date: Thu Nov 19 15:40:58 2020
New Revision: 367844
URL: https://svnweb.freebsd.org/changeset/base/367844
Log:
Micro-optimize vm_page_pqbatch_submit()
Avoid calling vm_page_domain() twice.
Discussed with: alc (in D27207)
Modified:
head/sys/vm/vm_page.c
Modified: head/sys/vm/vm_page.c
==============================================================================
--- head/sys/vm/vm_page.c Thu Nov 19 14:27:01 2020 (r367843)
+++ head/sys/vm/vm_page.c Thu Nov 19 15:40:58 2020 (r367844)
@@ -3598,8 +3598,6 @@ vm_page_pqbatch_submit(vm_page_t m, uint8_t queue)
KASSERT(queue < PQ_COUNT, ("invalid queue %d", queue));
domain = vm_page_domain(m);
- pq = &vm_pagequeue_domain(m)->vmd_pagequeues[queue];
-
critical_enter();
bq = DPCPU_PTR(pqbatch[domain][queue]);
if (vm_batchqueue_insert(bq, m)) {
@@ -3607,6 +3605,8 @@ vm_page_pqbatch_submit(vm_page_t m, uint8_t queue)
return;
}
critical_exit();
+
+ pq = &VM_DOMAIN(domain)->vmd_pagequeues[queue];
vm_pagequeue_lock(pq);
critical_enter();
bq = DPCPU_PTR(pqbatch[domain][queue]);
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