On Wed, Jul 17, 2024 at 2:20 PM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
>
> On Wed, Jul 17, 2024 at 1:19 PM Vlastimil Babka <vbabka@xxxxxxx> wrote:
> >
> > On 7/17/24 10:04 PM, Suren Baghdasaryan wrote:
> > > On Wed, Jul 17, 2024 at 12:36 PM Vlastimil Babka <vbabka@xxxxxxx> wrote:
> > >>
> > >> On 7/17/24 8:12 PM, Suren Baghdasaryan wrote:
> > >> > Outline and export free_reserved_page() because modules use it and it
> > >> > in turn uses page_ext_{get|put} which should not be exported. The same
> > >> > result could be obtained by outlining {get|put}_page_tag_ref() but that
> > >> > would have higher performance impact as these functions are used in
> > >> > more performance critical paths.
> > >> >
> > >> > Fixes: dcfe378c81f7 ("lib: introduce support for page allocation tagging")
> > >> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> > >> > Closes: https://lore.kernel.org/oe-kbuild-all/202407080044.DWMC9N9I-lkp@xxxxxxxxx/
> > >> > Suggested-by: Christoph Hellwig <hch@xxxxxxxxxxxxx>
> > >> > Suggested-by: Vlastimil Babka <vbabka@xxxxxxx>
> > >> > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
> > >>
> > >> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
> > >>
> > >> Are these two patches now stable@ material as 6.10 build is broken on ppc64
> > >> with alloc taging enabled?
> > >
> > > I tested them with that specific configuration mentioned in the bug
> > > report and with several usual ones I use.
> > > Yeah, I guess from now on all such fixes should have
> > >
> > > Cc: stable@xxxxxxxxxxxxxxx # v6.10
> >
> > Right. BTW I have just realized that the way you did Patch 2/2 and outlined
> > the whole free_reserved_page() (which is fair, it's an init-time function),
> > mem_alloc_profiling_enabled() didn't stay inlined so Patch 1/2 is in fact
> > not necessary anymore?
>
> Yeah, I think you are right, currently no module has reasons to use
> mem_alloc_profiling_enabled() directly. That might change in the
> future but we can add the export at the time it's needed.
> I checked and ppc64 build passes with just this patch. Let me post v3
> with just this patch and Cc stable@.
v3 posted at https://lore.kernel.org/all/20240717212844.2749975-1-surenb@xxxxxxxxxx/
>
>
> >
> >
> >
