linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Vlastimil Babka <vbabka@suse.cz>
To: Georgi Djakov <georgi.djakov@linaro.org>,
	akpm@linux-foundation.org, linux-mm@kvack.org
Cc: corbet@lwn.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] mm/page_owner: Record the timestamp of all pages during free
Date: Fri, 5 Feb 2021 13:02:08 +0100	[thread overview]
Message-ID: <db54c41c-2bb2-43e8-eb0d-5869a5cff10f@suse.cz> (raw)
In-Reply-To: <20210203175905.12267-1-georgi.djakov@linaro.org>

On 2/3/21 6:59 PM, Georgi Djakov wrote:
> Collect the time when each allocation is freed, to help with memory
> analysis with kdump/ramdump. Add the timestamp also in the page_owner
> debugfs file and print it in dump_page().
> 
> Having another timestamp when we free the page helps for debugging
> page migration issues. For example both alloc and free timestamps
> being the same can gave hints that there is an issue with migrating
> memory, as opposed to a page just being dropped during migration.
> 
> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>

Acked-by: Vlastimil Babka <vbabka@suse.cz>

Thanks.


      reply	other threads:[~2021-02-05 12:02 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-03 17:59 Georgi Djakov
2021-02-05 12:02 ` Vlastimil Babka [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=db54c41c-2bb2-43e8-eb0d-5869a5cff10f@suse.cz \
    --to=vbabka@suse.cz \
    --cc=akpm@linux-foundation.org \
    --cc=corbet@lwn.net \
    --cc=georgi.djakov@linaro.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox