linux-kernel - Re: [RFC PATCH v3 4/7] mm/migrate: add MR_DAMON to migrate

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Message-Id: <20240405192051.67009-1-sj@kernel.org>
Date: Fri,  5 Apr 2024 12:20:51 -0700
From: SeongJae Park <sj@...nel.org>
To: Honggyu Kim <honggyu.kim@...com>
Cc: SeongJae Park <sj@...nel.org>,
	damon@...ts.linux.dev,
	linux-mm@...ck.org,
	akpm@...ux-foundation.org,
	apopple@...dia.com,
	baolin.wang@...ux.alibaba.com,
	dave.jiang@...el.com,
	hyeongtak.ji@...com,
	kernel_team@...ynix.com,
	linmiaohe@...wei.com,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	mathieu.desnoyers@...icios.com,
	mhiramat@...nel.org,
	rakie.kim@...com,
	rostedt@...dmis.org,
	surenb@...gle.com,
	yangx.jy@...itsu.com,
	ying.huang@...el.com,
	ziy@...dia.com,
	42.hyeyoo@...il.com,
	art.jeongseob@...il.com
Subject: Re: [RFC PATCH v3 4/7] mm/migrate: add MR_DAMON to migrate_reason

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

Reviewed-by: SeongJae Park <sj@...nel.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
> 
>