Re: [PATCH 2/5] mm: page_alloc: trace type pollution from compaction capturing

[Zi Yan <ziy@nvidia.com>]

On 13 Mar 2025, at 17:05, Johannes Weiner wrote:

> When the page allocator places pages of a certain migratetype into
> blocks of another type, it has lasting effects on the ability to
> compact and defragment down the line. For improving placement and
> compaction, visibility into such events is crucial.
>
> The most common case, allocator fallbacks, is already annotated, but
> compaction capturing is also allowed to grab pages of a different
> type. Extend the tracepoint to cover this case.
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
> ---
>  mm/page_alloc.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
Acked-by: Zi Yan <ziy@nvidia.com>

Best Regards,
Yan, Zi