Date: Wed, 14 Apr 2021 09:32:32 -0400 From: Mark Johnston <markj@freebsd.org> To: Andriy Gapon <avg@freebsd.org> Cc: freebsd-stable List <stable@freebsd.org>, FreeBSD Current <current@freebsd.org> Subject: Re: stable/13, vm page counts do not add up Message-ID: <YHbu8ApV7KfXEU%2By@nuc> In-Reply-To: <23d370fa-41db-a89b-03fd-e45deb874aed@FreeBSD.org> References: <0606571f-fec0-c7ad-98e8-a0b8554918e2@FreeBSD.org> <YG4OAVa0ohh4illU@nuc> <f509bf54-e283-eb29-2db2-1457dae7bc13@FreeBSD.org> <YG4ckaRbub6kEFO8@nuc> <dd0a979f-8a50-ab28-9701-0a8cddc9471b@FreeBSD.org> <YHYKsl/sNBNYZUDC@nuc> <23d370fa-41db-a89b-03fd-e45deb874aed@FreeBSD.org>
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On Wed, Apr 14, 2021 at 02:21:44PM +0300, Andriy Gapon wrote:
> On 14/04/2021 00:18, Mark Johnston wrote:
> > fbt::vm_page_unwire:entry
> > /args[0]->oflags & 0x4/
> > {
> > @unwire[stack()] = count();
> > }
>
> Unrelated report, dtrace complains about this probe on my stable/13 system:
> failed to resolve translated type for args[0]
>
> And I do not have any idea why...
There was a regression, see PR 253440. I think you have the fix
already, but perhaps not. Could you show output from
"dtrace -lv -n fbt::vm_page_unwire:entry"?
>
> From ctfdump:
> [27290] FUNC (vm_page_unwire) returns: 38 args: (1463, 3)
>
> <1463> TYPEDEF vm_page_t refers to 778
> <778> POINTER (anon) refers to 3575
> <3575> STRUCT vm_page (104 bytes)
> plinks type=3563 off=0
> listq type=3558 off=128
> object type=3564 off=256
> pindex type=3565 off=320
> phys_addr type=42 off=384
> md type=3571 off=448
> ref_count type=31 off=640
> busy_lock type=31 off=672
> a type=3573 off=704
> order type=3 off=736
> pool type=3 off=744
> flags type=3 off=752
> oflags type=3 off=760
> psind type=2167 off=768
> segind type=2167 off=776
> valid type=3574 off=784
> dirty type=3574 off=792
>
> --
> Andriy Gapon
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