Re: [LSF/MM/BPF TOPIC] Memory profiling using code tagging

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On 2/22/23 20:31, Suren Baghdasaryan wrote:
> We would like to continue the discussion about code tagging use for
> memory allocation profiling. The code tagging framework [1] and its
> applications were posted as an RFC [2] and discussed at LPC 2022. It
> has many applications proposed in the RFC but we would like to focus
> on its application for memory profiling. It can be used as a
> low-overhead solution to track memory leaks, rank memory consumers by
> the amount of memory they use, identify memory allocation hot paths
> and possible other use cases.
> Kent Overstreet and I worked on simplifying the solution, minimizing
> the overhead and implementing features requested during RFC review.

IIRC one large objection was the use of page_ext, I don't recall if you
found another solution to that?

> Kent Overstreet, Michal Hocko, Johannes Weiner, Matthew Wilcox, Andrew
> Morton, David Hildenbrand, Vlastimil Babka, Roman Gushchin would be
> good participants.
> 
> [1] https://lwn.net/Articles/906660/
> [2] https://lore.kernel.org/all/20220830214919.53220-1-surenb@xxxxxxxxxx/
> 





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