Author: jeff
Date: Mon Feb 17 01:59:55 2020
New Revision: 358012
URL: https://svnweb.freebsd.org/changeset/base/358012
Log:
Add a simple accessor that returns the bytes of memory consumed by a zone.
Modified:
head/sys/vm/uma.h
head/sys/vm/uma_core.c
Modified: head/sys/vm/uma.h
==============================================================================
--- head/sys/vm/uma.h Mon Feb 17 01:08:00 2020 (r358011)
+++ head/sys/vm/uma.h Mon Feb 17 01:59:55 2020 (r358012)
@@ -671,6 +671,11 @@ void uma_prealloc(uma_zone_t zone, int itemcnt);
int uma_zone_exhausted(uma_zone_t zone);
/*
+ * Returns the bytes of memory consumed by the zone.
+ */
+size_t uma_zone_memory(uma_zone_t zone);
+
+/*
* Common UMA_ZONE_PCPU zones.
*/
extern uma_zone_t pcpu_zone_int;
Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c Mon Feb 17 01:08:00 2020 (r358011)
+++ head/sys/vm/uma_core.c Mon Feb 17 01:59:55 2020 (r358012)
@@ -4681,6 +4681,27 @@ uma_prealloc(uma_zone_t zone, int items)
}
}
+/*
+ * Returns a snapshot of memory consumption in bytes.
+ */
+size_t
+uma_zone_memory(uma_zone_t zone)
+{
+ size_t sz;
+ int i;
+
+ sz = 0;
+ if (zone->uz_flags & UMA_ZFLAG_CACHE) {
+ for (i = 0; i < vm_ndomains; i++)
+ sz += zone->uz_domain[i].uzd_nitems;
+ return (sz * zone->uz_size);
+ }
+ for (i = 0; i < vm_ndomains; i++)
+ sz += zone->uz_keg->uk_domain[i].ud_pages;
+
+ return (sz * PAGE_SIZE);
+}
+
/* See uma.h */
void
uma_reclaim(int req)
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