linux-kernel - Re: [RFC 1/3] mm: add tracepoint for scanning pages

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Message-ID: <557E249B.6070208@redhat.com>
Date:	Sun, 14 Jun 2015 21:04:27 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Ebru Akagunduz <ebru.akagunduz@...il.com>, linux-mm@...ck.org
CC:	akpm@...ux-foundation.org, kirill.shutemov@...ux.intel.com,
	n-horiguchi@...jp.nec.com, aarcange@...hat.com,
	iamjoonsoo.kim@....com, xiexiuqi@...wei.com, gorcunov@...nvz.org,
	linux-kernel@...r.kernel.org, mgorman@...e.de, rientjes@...gle.com,
	vbabka@...e.cz, aneesh.kumar@...ux.vnet.ibm.com, hughd@...gle.com,
	hannes@...xchg.org, mhocko@...e.cz, boaz@...xistor.com,
	raindel@...lanox.com
Subject: Re: [RFC 1/3] mm: add tracepoint for scanning pages

On 06/14/2015 11:04 AM, Ebru Akagunduz wrote:
> Using static tracepoints, data of functions is recorded.
> It is good to automatize debugging without doing a lot
> of changes in the source code.
> 
> This patch adds tracepoint for khugepaged_scan_pmd,
> collapse_huge_page and __collapse_huge_page_isolate.

These trace points seem like a useful set to figure out what
the THP collapse code is doing.

> Signed-off-by: Ebru Akagunduz <ebru.akagunduz@...il.com>

Acked-by: Rik van Riel <riel@...hat.com>

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