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Code Issues Releases Activity

Added sysctl to turn off calls to vmem_check().

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Sponsored by:	EMC / Isilon storage division
Discussed with:	 jeff
This commit is contained in:
Peter Holm 2013-08-20 11:06:56 +00:00
parent 8ce80d4bd4
commit 844e14d34c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=254558
1 changed files with 9 additions and 3 deletions
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12
sys/kern/subr_vmem.c
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@ -54,6 +54,7 @@ __FBSDID("$FreeBSD$");
#include <sys/mutex.h>
#include <sys/smp.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <sys/vmem.h>
@ -167,6 +168,9 @@ struct vmem_btag {
#define BT_END(bt) ((bt)->bt_start + (bt)->bt_size - 1)
#if defined(DIAGNOSTIC)
static int enable_vmem_check = 1;
SYSCTL_INT(_debug, OID_AUTO, vmem_check, CTLFLAG_RW,
&enable_vmem_check, 0, "Enable vmem check");
static void vmem_check(vmem_t *);
#endif
@ -720,9 +724,11 @@ vmem_periodic(void *unused, int pending)
LIST_FOREACH(vm, &vmem_list, vm_alllist) {
#ifdef DIAGNOSTIC
/* Convenient time to verify vmem state. */
VMEM_LOCK(vm);
vmem_check(vm);
VMEM_UNLOCK(vm);
if (enable_vmem_check == 1) {
VMEM_LOCK(vm);
vmem_check(vm);
VMEM_UNLOCK(vm);
}
#endif
desired = 1 << flsl(vm->vm_nbusytag);
desired = MIN(MAX(desired, VMEM_HASHSIZE_MIN),