linux-kernel - Re: [PATCH v4] mm/khugepaged: add tracepoint to collapse

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Date:   Fri, 9 Dec 2022 15:57:13 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Gautam Menghani <gautammenghani201@...il.com>
Cc:     mhiramat@...nel.org, akpm@...ux-foundation.org,
        shy828301@...il.com, zokeefe@...gle.com, vbabka@...e.cz,
        david@...hat.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] mm/khugepaged: add tracepoint to collapse_file()

On Sat,  3 Dec 2022 01:48:07 +0530
Gautam Menghani <gautammenghani201@...il.com> wrote:

> Currently, is_shmem is not being captured. Capturing is_shmem is useful 
> as it can indicate if tmpfs is being used as a backing store instead of 
> persistent storage. Add the tracepoint in collapse_file() named 
> "mm_khugepaged_collapse_file" for capturing is_shmem.
> 
> Signed-off-by: Gautam Menghani <gautammenghani201@...il.com>
> ---

>From a tracing point of view:

Reviewed-by: Steven Rostedt (Google) <rostedt@...dmis.org>

-- Steve