Re: [PATCH v2] mm: add alloc_contig_migrate_range allocation statistics

[Minchan Kim]

On Wed, Feb 28, 2024 at 05:11:17AM +0000, Richard Chang wrote:
> alloc_contig_migrate_range has every information to be able to
> understand big contiguous allocation latency. For example, how many
> pages are migrated, how many times they were needed to unmap from
> page tables.
> 
> This patch adds the trace event to collect the allocation statistics.
> In the field, it was quite useful to understand CMA allocation
> latency.
> 
> Signed-off-by: Richard Chang <richardycc@xxxxxxxxxx>

Acked-by: Minchan Kim <minchan@xxxxxxxxxx>