From: Usama Arif <usamaarif642@gmail.com>
To: Suren Baghdasaryan <surenb@google.com>, akpm@linux-foundation.org
Cc: kent.overstreet@linux.dev, vbabka@suse.cz, hannes@cmpxchg.org,
rientjes@google.com, roman.gushchin@linux.dev,
harry.yoo@oracle.com, shakeel.butt@linux.dev, 00107082@163.com,
pyyjason@gmail.com, pasha.tatashin@soleen.com,
souravpanda@google.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] fixup: alloc_tag: mark inaccurate allocation counters in /proc/allocinfo output
Date: Tue, 16 Sep 2025 21:50:51 +0100 [thread overview]
Message-ID: <4c4e97c1-7f93-4c09-a235-ab169a998ef0@gmail.com> (raw)
In-Reply-To: <20250916160110.266190-1-surenb@google.com>
On 16/09/2025 17:01, Suren Baghdasaryan wrote:
> Document new "accurate:no" marker.
>
> Fixes: 39d117e04d15 ("alloc_tag: mark inaccurate allocation counters in /proc/allocinfo output")
> Suggested-by: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Suren Baghdasaryan <surenb@google.com>
> ---
> Based on mm-new
>
> Documentation/filesystems/proc.rst | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
> index 1776a06571c2..17668f82ff1c 100644
> --- a/Documentation/filesystems/proc.rst
> +++ b/Documentation/filesystems/proc.rst
> @@ -1014,6 +1014,14 @@ If file version is 2.0 or higher then each line may contain additional
> For example if the counters are not accurate, the line will be appended with
> "accurate:no" pair.
>
> +Supported markers in v2:
> +accurate:no
> + Absolute values of the counters in this line are not
s/values/value/ maybe? :)> + accurate because of the failure to allocate storage required
s/storage required/memory/
> + 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.
> +
> Example output.
>
> ::
>
> base-commit: 199236646ffd82b5a5bcf2bca1579ea06cb0ae74
next prev parent reply other threads:[~2025-09-16 20:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-16 16:01 Suren Baghdasaryan
2025-09-16 20:50 ` Usama Arif [this message]
2025-09-16 22:15 ` Suren Baghdasaryan
2025-09-17 0:56 ` Andrew Morton
2025-09-17 1:23 ` Suren Baghdasaryan
2025-09-19 4:20 ` Randy Dunlap
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