On Sat, Nov 16, 2024 at 5:20 PM Jonathan Corbet wrote:
>
> Pasha Tatashin writes:
>
> > Page Detective is a kernel debugging tool that provides detailed
> > information about the usage and mapping of physical memory pages.
> >
> > It operates through the Linux debugfs interface, providing access
On Mon, Nov 18, 2024 at 1:49 AM Christoph Hellwig wrote:
>
> On Sat, Nov 16, 2024 at 05:59:18PM +, Pasha Tatashin wrote:
> > } while (start = next, start < end);
> > return err;
> > }
> > +EXPORT_SYMBOL_GPL(walk_page_range);
>
> Umm, no. We really should not expose all these page
On Mon, Nov 18, 2024 at 5:27 AM Lorenzo Stoakes
wrote:
>
> On Sat, Nov 16, 2024 at 05:59:17PM +, Pasha Tatashin wrote:
> > Page Detective will be using get_vma_name() that is currently used by
> > fs/proc to show names of VMAs in /proc//smaps for example.
> >
> > Move this function to mm/vma.c
On Mon, Nov 18, 2024 at 03:40:57PM -0500, Pasha Tatashin wrote:
> > You're putting something in an mm/ C-file and the header in fs.h? Eh?
>
> This is done so we do not have to include struct path into vma.h. fs.h
> already has some vma functions like: vma_is_dax() and vma_is_fsdax().
Yes, but DAX
On Sun, Nov 17, 2024 at 1:25 AM Muhammad Usama Anjum
wrote:
>
> On 11/16/24 10:59 PM, Pasha Tatashin wrote:
> > Add self tests for Page Detective, it contains testing of several memory
> > types, and also some negative/bad input tests.
> >
> > Signed-off-by: Pasha Tatashin
> > ---
> > MAINTAINER
On Sat, Nov 16, 2024 at 05:59:16PM +, Pasha Tatashin wrote:
> Page Detective is a new kernel debugging tool that provides detailed
> information about the usage and mapping of physical memory pages.
>
> It is often known that a particular page is corrupted, but it is hard to
> extract more inf
This patch looks good to me.
I assume the profile format change in the Android doc will be submitted soon.
Since "extbinary" is a superset of "binary", using the "extbinary"
format profile
in Android shouldn't cause any compatibility issues.
Reviewed-by: Rong Xu
-Rong
On Mon, Nov 18, 2024 at 2
On Mon, Nov 18, 2024 at 11:24 PM Pasha Tatashin
wrote:
> On Mon, Nov 18, 2024 at 7:54 AM Jann Horn wrote:
> >
> > On Mon, Nov 18, 2024 at 12:17 PM Lorenzo Stoakes
> > wrote:
> > > On Sat, Nov 16, 2024 at 05:59:16PM +, Pasha Tatashin wrote:
> > > > It operates through the Linux debugfs interf
On Mon, Nov 18, 2024 at 3:44 PM Matthew Wilcox wrote:
>
> On Mon, Nov 18, 2024 at 03:40:57PM -0500, Pasha Tatashin wrote:
> > > You're putting something in an mm/ C-file and the header in fs.h? Eh?
> >
> > This is done so we do not have to include struct path into vma.h. fs.h
> > already has some
> Can you point me to where a refcounted reference to the page comes
> from when page_detective_metadata() calls dump_page_lvl()?
I am sorry, I remembered incorrectly, we are getting reference right
after dump_page_lvl() in page_detective_memcg() -> folio_try_get(); I
will move the folio_try_get()
Sorry for the late review, I think this will miss v6.13 :(
On Wed, 13 Nov 2024 07:10:53 -0800 Breno Leitao wrote:
> /**
> * struct netconsole_target - Represents a configured netconsole target.
> * @list:Links this target into the target_list.
> @@ -97,6 +105,7 @@ static struct console ne
On Wed, 13 Nov 2024 07:10:55 -0800 Breno Leitao wrote:
> + if ! grep -q "cpu=[0-9]\+" "${TMPFILENAME}"; then
> + echo "FAIL: 'cpu=' not found in ${TMPFILENAME}" >&2
> + cat "${TMPFILENAME}" >&2
> + exit "${ksft_fail}"
> + fi
Could we try to do something
Select ARCH_SUPPORTS_AUTOFDO_CLANG to allow AUTOFDO_CLANG to be
selected.
On ARM64, ETM traces can be recorded and converted to AutoFDO profiles.
Experiments on Android show 4% improvement in cold app startup time
and 13% improvement in binder benchmarks.
Signed-off-by: Yabin Cui
---
Change-Log
On Mon, Nov 18, 2024 at 7:54 AM Jann Horn wrote:
>
> On Mon, Nov 18, 2024 at 12:17 PM Lorenzo Stoakes
> wrote:
> > On Sat, Nov 16, 2024 at 05:59:16PM +, Pasha Tatashin wrote:
> > > It operates through the Linux debugfs interface, with two files: "virt"
> > > and "phys".
> > >
> > > The "virt"
On Sat, Nov 16, 2024 at 6:59 PM Pasha Tatashin
wrote:
> Page Detective is a kernel debugging tool that provides detailed
> information about the usage and mapping of physical memory pages.
>
> It operates through the Linux debugfs interface, providing access
> to both virtual and physical address
On Mon, Nov 18, 2024 at 2:11 PM Roman Gushchin wrote:
>
> On Sat, Nov 16, 2024 at 05:59:16PM +, Pasha Tatashin wrote:
> > Page Detective is a new kernel debugging tool that provides detailed
> > information about the usage and mapping of physical memory pages.
> >
> > It is often known that a
On Mon, Nov 18, 2024 at 05:08:42PM -0500, Pasha Tatashin wrote:
> Additionally, using crash/drgn is not feasible for us at this time, it
> requires keeping external tools on our hosts, also it requires
> approval and a security review for each script before deployment in
> our fleet.
So it's ok to
On Sat, Nov 16, 2024 at 05:59:20PM +, Pasha Tatashin wrote:
> Page Detective is a kernel debugging tool that provides detailed
> information about the usage and mapping of physical memory pages.
>
> It operates through the Linux debugfs interface, providing access
> to both virtual and physical
On Mon, Nov 18, 2024 at 12:17 PM Lorenzo Stoakes
wrote:
> On Sat, Nov 16, 2024 at 05:59:16PM +, Pasha Tatashin wrote:
> > It operates through the Linux debugfs interface, with two files: "virt"
> > and "phys".
> >
> > The "virt" file takes a virtual address and PID and outputs information
> >
On Sat, Nov 16, 2024 at 05:59:17PM +, Pasha Tatashin wrote:
> Page Detective will be using get_vma_name() that is currently used by
> fs/proc to show names of VMAs in /proc//smaps for example.
>
> Move this function to mm/vma.c, and make it accessible by modules.
This is incorrect.
mm/vma.c i
On Sun, Nov 17, 2024 at 10:49:06PM -0800, Christoph Hellwig wrote:
> On Sat, Nov 16, 2024 at 05:59:18PM +, Pasha Tatashin wrote:
> > } while (start = next, start < end);
> > return err;
> > }
> > +EXPORT_SYMBOL_GPL(walk_page_range);
>
> Umm, no. We really should not expose all these p
On Sat, Nov 16, 2024 at 05:59:16PM +, Pasha Tatashin wrote:
> Page Detective is a new kernel debugging tool that provides detailed
> information about the usage and mapping of physical memory pages.
>
> It is often known that a particular page is corrupted, but it is hard to
> extract more info
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