d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

o Remove the acquisition and release of Giant from the idle priority thread

Browse Source 
that pre-zeroes free pages.
 o Remove GIANT_REQUIRED from some low-level page queue functions.  (Instead
   assertions on the page queue lock are being added to the higher-level
   functions, like vm_page_wire(), etc.)

In collaboration with:	peter
This commit is contained in:
Alan Cox 2002-07-18 17:40:07 +00:00
parent 5acf5031ca
commit f23050633f
2 changed files with 1 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/vm/vm_pageq.c
View File

@ -195,7 +195,6 @@ _vm_pageq_find(int basequeue, int index)
vm_page_t m = NULL;
struct vpgqueues *pq;
GIANT_REQUIRED;
pq = &vm_page_queues[basequeue];
/*
@ -219,8 +218,6 @@ vm_pageq_find(int basequeue, int index, boolean_t prefer_zero)
{
vm_page_t m;
GIANT_REQUIRED;
#if PQ_L2_SIZE > 1
if (prefer_zero) {
m = TAILQ_LAST(&vm_page_queues[basequeue+index].pl, pglist);

6
sys/vm/vm_zeroidle.c
View File

@ -74,18 +74,15 @@ vm_page_zero_idle(void)
static int free_rover;
vm_page_t m;
mtx_lock(&Giant);
mtx_lock_spin(&vm_page_queue_free_mtx);
zero_state = 0;
m = vm_pageq_find(PQ_FREE, free_rover, FALSE);
if (m != NULL && (m->flags & PG_ZERO) == 0) {
vm_pageq_remove_nowakeup(m);
mtx_unlock_spin(&vm_page_queue_free_mtx);
mtx_unlock(&Giant);
pmap_zero_page_idle(m);
mtx_lock(&Giant);
mtx_lock_spin(&vm_page_queue_free_mtx);
vm_page_flag_set(m, PG_ZERO);
m->flags |= PG_ZERO;
vm_pageq_enqueue(PQ_FREE + m->pc, m);
++vm_page_zero_count;
++cnt_prezero;
@ -94,7 +91,6 @@ vm_page_zero_idle(void)
}
free_rover = (free_rover + PQ_PRIME2) & PQ_L2_MASK;
mtx_unlock_spin(&vm_page_queue_free_mtx);
mtx_unlock(&Giant);
return 1;
}