linux-kernel - Re: [PATCH v3 00/35] Memory allocation profiling

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Date: Tue, 13 Feb 2024 13:58:39 -0800
From: Suren Baghdasaryan <surenb@...gle.com>
To: Michal Hocko <mhocko@...e.com>
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Subject: Re: [PATCH v3 00/35] Memory allocation profiling

On Tue, Feb 13, 2024 at 4:24 AM Michal Hocko <mhocko@...e.com> wrote:
>
> On Mon 12-02-24 13:38:46, Suren Baghdasaryan wrote:
> [...]
> > We're aiming to get this in the next merge window, for 6.9. The feedback
> > we've gotten has been that even out of tree this patchset has already
> > been useful, and there's a significant amount of other work gated on the
> > code tagging functionality included in this patchset [2].
>
> I suspect it will not come as a surprise that I really dislike the
> implementation proposed here. I will not repeat my arguments, I have
> done so on several occasions already.
>
> Anyway, I didn't go as far as to nak it even though I _strongly_ believe
> this debugging feature will add a maintenance overhead for a very long
> time. I can live with all the downsides of the proposed implementation
> _as long as_ there is a wider agreement from the MM community as this is
> where the maintenance cost will be payed. So far I have not seen (m)any
> acks by MM developers so aiming into the next merge window is more than
> little rushed.

We tried other previously proposed approaches and all have their
downsides without making maintenance much easier. Your position is
understandable and I think it's fair. Let's see if others see more
benefit than cost here.
Thanks,
Suren.

>
> >  81 files changed, 2126 insertions(+), 695 deletions(-)
> --
> Michal Hocko
> SUSE Labs