Re: [PATCH v4 15/36] lib: introduce support for page allocation tagging

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On 2/21/24 20:40, Suren Baghdasaryan wrote:
> Introduce helper functions to easily instrument page allocators by
> storing a pointer to the allocation tag associated with the code that
> allocated the page in a page_ext field.
> 
> Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
> Co-developed-by: Kent Overstreet <kent.overstreet@xxxxxxxxx>
> Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx>

The static key usage seems fine now. Even if the page_ext overhead is still
always paid when compiled in, you mention in the cover letter there's a plan
for boot-time toggle later, so

Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>






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