linux-kernel - Re: [PATCH v2 1/1] alloc_tag: mark inaccurate allocation counters in /proc/allocinfo output

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Message-ID: <CAJuCfpH1JW8vwOFF2H2SOxZqoJHadXsTc6C=LUS_=twcf=k9qQ@mail.gmail.com>
Date: Mon, 15 Sep 2025 20:34:33 -0700
From: Suren Baghdasaryan <surenb@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: kent.overstreet@...ux.dev, vbabka@...e.cz, hannes@...xchg.org, 
	usamaarif642@...il.com, rientjes@...gle.com, roman.gushchin@...ux.dev, 
	harry.yoo@...cle.com, shakeel.butt@...ux.dev, 00107082@....com, 
	pyyjason@...il.com, pasha.tatashin@...een.com, souravpanda@...gle.com, 
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] alloc_tag: mark inaccurate allocation counters in
 /proc/allocinfo output

On Mon, Sep 15, 2025 at 7:56 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Mon, 15 Sep 2025 19:48:14 -0700 Suren Baghdasaryan <surenb@...gle.com> wrote:
>
> >
> > > Perhaps we can tell people what accurate:no actually means.  It is a
> > > rather disturbing thing to see!  How worried should our users be about
> > > it?
> >
> > Right. How about adding a section like this:
> >
> > Supported markers in v2:
> > accurate:no
> >               Absolute values of the counters in this line are not
> >               accurate because of the failure to allocate storage required
> >               to track some of the allocations made at this location.
> >               Deltas in these counters are accurate, therefore counters
> >               can be used to track allocation size and count changes.
> >
> >
> > If this looks good,
>
> looks awesome ;)
>
> > could you fold it into the existing patch or
> > should I respin?
>
> A little fixlet would be preferred (by me, at least).

Ok, should I post a fixup patch or you will do that in-place?