Re: [RFC PATCH v3 4/7] mm/migrate: add MR_DAMON to migrate_reason

SeongJae Park
2024-04-05T19:20:54Z

On Fri, 5 Apr 2024 15:08:53 +0900 Honggyu Kim <honggyu.kim@sk.com> wrote:

> The current patch series introduces DAMON based migration across NUMA
> nodes so it'd be better to have a new migrate_reason in trace events.
>
> Signed-off-by: Honggyu Kim <honggyu.kim@sk.com>

Reviewed-by: SeongJae Park <sj@kernel.org>

Thanks,
SJ

> ---
> include/linux/migrate_mode.h | 1 +
> include/trace/events/migrate.h | 3 ++-
> 2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/migrate_mode.h b/include/linux/migrate_mode.h
> index f37cc03f9369..cec36b7e7ced 100644
> --- a/include/linux/migrate_mode.h
> +++ b/include/linux/migrate_mode.h
> @@ -29,6 +29,7 @@ enum migrate_reason {
> MR_CONTIG_RANGE,
> MR_LONGTERM_PIN,
> MR_DEMOTION,
> + MR_DAMON,
> MR_TYPES
> };
>
> diff --git a/include/trace/events/migrate.h b/include/trace/events/migrate.h
> index 0190ef725b43..cd01dd7b3640 100644
> --- a/include/trace/events/migrate.h
> +++ b/include/trace/events/migrate.h
> @@ -22,7 +22,8 @@
> EM( MR_NUMA_MISPLACED, "numa_misplaced") \
> EM( MR_CONTIG_RANGE, "contig_range") \
> EM( MR_LONGTERM_PIN, "longterm_pin") \
> - EMe(MR_DEMOTION, "demotion")
> + EM( MR_DEMOTION, "demotion") \
> + EMe(MR_DAMON, "damon")
>
> /*
> * First define the enums in the above macros to be exported to userspace
> --
> 2.34.1
>
>