From cd2b3416c3fcf66a078e9dacad40f290b07b9868 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 13 Jun 2009 18:35:29 +0000 Subject: [PATCH] Correct the method of waking the page daemon when the number of allocated pv entries surpasses the high water mark. The problem was that the page daemon would only be awakened the first time that the high water mark was surpassed. (The variable "pagedaemon_waken" is a non-working vestige of FreeBSD 4.x, in which it was external and reset by the page daemon whenever it ran. This reset allowed subsequent wakeups by the pv entry allocator.) --- sys/powerpc/booke/pmap.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/sys/powerpc/booke/pmap.c b/sys/powerpc/booke/pmap.c index 5a9dc1cf0e9..904424dedb4 100644 --- a/sys/powerpc/booke/pmap.c +++ b/sys/powerpc/booke/pmap.c @@ -156,8 +156,6 @@ static void mmu_booke_enter_locked(mmu_t, pmap_t, vm_offset_t, vm_page_t, unsigned int kptbl_min; /* Index of the first kernel ptbl. */ unsigned int kernel_ptbls; /* Number of KVA ptbls. */ -static int pagedaemon_waken; - /* * If user pmap is processed with mmu_booke_remove and the resident count * drops to 0, there are no more pages to remove, so we need not continue. @@ -712,11 +710,8 @@ pv_alloc(void) pv_entry_t pv; pv_entry_count++; - if ((pv_entry_count > pv_entry_high_water) && - (pagedaemon_waken == 0)) { - pagedaemon_waken = 1; - wakeup(&vm_pages_needed); - } + if (pv_entry_count > pv_entry_high_water) + pagedaemon_wakeup(); pv = uma_zalloc(pvzone, M_NOWAIT); return (pv);