linux-kernel - Re: [PATCH v3] khugepaged: Pass folio instead of head page to trace events

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Message-ID: <aAsHUZ6HTGFBRyXO@casper.infradead.org>
Date: Fri, 25 Apr 2025 04:53:53 +0100
From: Matthew Wilcox <willy@...radead.org>
To: nifan.cxl@...il.com
Cc: rostedt@...dmis.org, mhiramat@...nel.org, akpm@...ux-foundation.org,
	david@...hat.com, fan.ni@...sung.com, yang@...amperecomputing.com,
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	linux-mm@...ck.org, npache@...hat.com, mcgrof@...nel.org,
	a.manzanares@...sung.com, dave@...olabs.net,
	Baolin Wang <baolin.wang@...ux.alibaba.com>
Subject: Re: [PATCH v3] khugepaged: Pass folio instead of head page to trace
 events

On Thu, Apr 24, 2025 at 05:16:51PM -0700, nifan.cxl@...il.com wrote:
> From: Fan Ni <fan.ni@...sung.com>
> 
> The trace functions trace_mm_collapse_huge_page_isolate() and
> trace_mm_khugepaged_scan_pmd() each have a single user, which
> always passes in the head page of a folio.
> Refactor both functions to take a folio directly.
> 
> Signed-off-by: Fan Ni <fan.ni@...sung.com>
> Reviewed-by: Nico Pache <npache@...hat.com>
> Reviewed-by: Davidlohr Bueso <dave@...olabs.net>
> Reviewed-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Reviewed-by: Yang Shi <yang@...amperecomputing.com>
> Acked-by: David Hildenbrand <david@...hat.com>

Reviewed-by: Matthew Wilcox (Oracle) <willy@...radead.org>