On 14/04/2021 16:32, Mark Johnston wrote:
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"?
dtrace -lv -n fbt::vm_page_unwire:entry
ID PROVIDER MODULE FUNCTION NAME
54323 fbt kernel vm_page_unwire entry
Probe Description Attributes
Identifier Names: Private
Data Semantics: Private
Dependency Class: Unknown
Argument Attributes
Identifier Names: Private
Data Semantics: Private
Dependency Class: ISA
Argument Types
args[0]: (unknown)
args[1]: (unknown)
It seems that I should have the fix, but somehow I still have the problem.
I've been doing NO_CLEAN builds for a long while, so maybe some stale file
didn't get re-created...
It looks that dt_lex.c under /usr/obj is rather dated.
... I've removed that file and rebuilt libdtrace and everything is okay now.
Thank you.
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
--
Andriy Gapon
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