Re: [PATCH v9 12/14] khugepaged: improve tracepoints for mTHP orders

[David Hildenbrand <david@redhat.com>]

On 14.07.25 02:32, Nico Pache wrote:
> Add the order to the tracepoints to give better insight into what order
> is being operated at for khugepaged.
> 
> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
> Signed-off-by: Nico Pache <npache@redhat.com>
> ---

[...]

>   
>   TRACE_EVENT(mm_collapse_huge_page_swapin,
>   
> -	TP_PROTO(struct mm_struct *mm, int swapped_in, int referenced, int ret),
> +	TP_PROTO(struct mm_struct *mm, int swapped_in, int referenced, int ret,
> +			int order),


Indentation.

[...]

> +++ b/mm/khugepaged.c
> @@ -711,13 +711,14 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
>   	} else {
>   		result = SCAN_SUCCEED;
>   		trace_mm_collapse_huge_page_isolate(folio, none_or_zero,
> -						    referenced, writable, result);
> +						    referenced, writable, result,
> +						    order);
>   		return result;
>   	}
>   out:
>   	release_pte_pages(pte, _pte, compound_pagelist);
>   	trace_mm_collapse_huge_page_isolate(folio, none_or_zero,
> -					    referenced, writable, result);
> +					    referenced, writable, result, order);
>   	return result;
>   }
>   
> @@ -1097,7 +1098,8 @@ static int __collapse_huge_page_swapin(struct mm_struct *mm,
>   
>   	result = SCAN_SUCCEED;
>   out:
> -	trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, result);
> +	trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, result,
> +						order);

Dito.

Acked-by: David Hildenbrand <david@redhat.com>

-- 
Cheers,

David / dhildenb