Author: kib
Date: Fri Jul 25 15:07:07 2014
New Revision: 269090
URL: http://svnweb.freebsd.org/changeset/base/269090
Log:
Partial MFC of r268466:
Add a knob to disable the residency calculation for kern.proc.vmmap.
Tested by: "Ivan A. Kosarev" <ikosa...@accesssoftek.com>
Modified:
stable/9/sys/kern/kern_proc.c
Modified: stable/9/sys/kern/kern_proc.c
==============================================================================
--- stable/9/sys/kern/kern_proc.c Fri Jul 25 14:47:44 2014
(r269089)
+++ stable/9/sys/kern/kern_proc.c Fri Jul 25 15:07:07 2014
(r269090)
@@ -141,6 +141,10 @@ uma_zone_t proc_zone;
int kstack_pages = KSTACK_PAGES;
SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0,
"Kernel stack size in pages");
+static int vmmap_skip_res_cnt = 0;
+SYSCTL_INT(_kern, OID_AUTO, proc_vmmap_skip_resident_count, CTLFLAG_RW,
+ &vmmap_skip_res_cnt, 0,
+ "Skip calculation of the pages resident count in kern.proc.vmmap");
CTASSERT(sizeof(struct kinfo_proc) == KINFO_PROC_SIZE);
#ifdef COMPAT_FREEBSD32
@@ -2189,6 +2193,8 @@ kern_proc_vmmap_out(struct proc *p, stru
}
kve->kve_resident = 0;
addr = entry->start;
+ if (vmmap_skip_res_cnt)
+ goto skip_resident_count;
while (addr < entry->end) {
locked_pa = 0;
mincoreinfo = pmap_mincore(map->pmap, addr, &locked_pa);
@@ -2201,6 +2207,7 @@ kern_proc_vmmap_out(struct proc *p, stru
addr += PAGE_SIZE;
}
+skip_resident_count:
for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
if (tobj != obj)
VM_OBJECT_LOCK(tobj);
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