Re: [PATCH v3] mm/vmstat: add events for ksm cow

[Matthew Wilcox]

On Thu, Mar 24, 2022 at 10:43:33AM +0000, cgel.zte@xxxxxxxxx wrote:
> +++ b/include/linux/vm_event_item.h
> @@ -131,6 +131,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
>  		SWAP_RA_HIT,
>  #ifdef CONFIG_KSM
>  		KSM_SWPIN_COPY,
> +		COW_KSM,

Shouldn't we call this KSM_COW?

> +++ b/mm/vmstat.c
> @@ -1390,6 +1390,7 @@ const char * const vmstat_text[] = {
>  	"swap_ra_hit",
>  #ifdef CONFIG_KSM
>  	"ksm_swpin_copy",
> +	"cow_ksm",

... and this "ksm_cow"?