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

[SeongJae Park]

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

Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>


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
> 
>