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Re: [RFC PATCH 00/30] Code tagging framework and applications
- To: Michal Hocko <mhocko@xxxxxxxx>
- From: Kent Overstreet <kent.overstreet@xxxxxxxxx>
- Date: Mon, 5 Sep 2022 19:46:49 -0400
- Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>, Mel Gorman <mgorman@xxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Roman Gushchin <roman.gushchin@xxxxxxxxx>, Davidlohr Bueso <dave@xxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, "Liam R. Howlett" <liam.howlett@xxxxxxxxxx>, David Vernet <void@xxxxxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Laurent Dufour <ldufour@xxxxxxxxxxxxx>, Peter Xu <peterx@xxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, mcgrof@xxxxxxxxxx, masahiroy@xxxxxxxxxx, nathan@xxxxxxxxxx, changbin.du@xxxxxxxxx, ytcoode@xxxxxxxxx, Vincent Guittot <vincent.guittot@xxxxxxxxxx>, Dietmar Eggemann <dietmar.eggemann@xxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Benjamin Segall <bsegall@xxxxxxxxxx>, Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>, Valentin Schneider <vschneid@xxxxxxxxxx>, Christopher Lameter <cl@xxxxxxxxx>, Pekka Enberg <penberg@xxxxxxxxxx>, Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>, 42.hyeyoo@xxxxxxxxx, Alexander Potapenko <glider@xxxxxxxxxx>, Marco Elver <elver@xxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, Shakeel Butt <shakeelb@xxxxxxxxxx>, Muchun Song <songmuchun@xxxxxxxxxxxxx>, arnd@xxxxxxxx, jbaron@xxxxxxxxxx, David Rientjes <rientjes@xxxxxxxxxx>, Minchan Kim <minchan@xxxxxxxxxx>, Kalesh Singh <kaleshsingh@xxxxxxxxxx>, kernel-team <kernel-team@xxxxxxxxxxx>, linux-mm <linux-mm@xxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, kasan-dev@xxxxxxxxxxxxxxxx, io-uring@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, linux-modules@xxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>
- Delivery-date: Mon, 05 Sep 2022 23:48:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Mon, Sep 05, 2022 at 10:49:38AM +0200, Michal Hocko wrote:
> This is really my main concern about this whole work. Not only it adds a
> considerable maintenance burden to the core MM because
[citation needed]
> it adds on top of
> our existing allocator layers complexity but it would need to spread beyond
> MM to be useful because it is usually outside of MM where leaks happen.
If you want the tracking to happen at a different level of the call stack, just
call _kmalloc() directly and call alloc_tag_add()/sub() yourself.
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