From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
To: Chintan Pandya <cpandya@codeaurora.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>,
Johannes Weiner <hannes@cmpxchg.org>,
Minchan Kim <minchan@kernel.org>, Dave Hansen <dave@sr71.net>,
Michal Nazarewicz <mina86@mina86.com>,
Jungsoo Son <jungsoo.son@lge.com>, Ingo Molnar <mingo@redhat.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 6/8] mm/page_owner: keep track of page owners
Date: Thu, 4 Dec 2014 15:56:22 +0900 [thread overview]
Message-ID: <20141204065622.GB12141@js1304-P5Q-DELUXE> (raw)
In-Reply-To: <547F0EF8.5030402@codeaurora.org>
On Wed, Dec 03, 2014 at 06:54:08PM +0530, Chintan Pandya wrote:
> Hi Kim,
Hello, Chintan.
>
> This is really useful stuff that you are doing. And the runtime
> allocation for storing page owner stack is a good call.
>
> Along with that, we also use extended version of the original
> page_owner patch. The extension is, to store stack trace at the time
> of freeing the page. That will indeed eat up space like anything
> (just double of original page_owner) but it helps in debugging some
> crucial issues. Like, illegitimate free, finding leaked pages (if we
Sound really interesting. I hope to see it.
> store their time stamps) etc. The same has been useful in finding
> double-free cases in drivers. But we have never got a chance to
> upstream that. Now that these patches are being discussed again, do
> you think it would be good idea to integrate in the same league of
> patches ?
Good to hear. I think that you can upstream it separately. If you send
the patch, I will review it and help to merge it.
Thanks.
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next prev parent reply other threads:[~2014-12-04 6:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-24 8:15 [PATCH v3 0/8] Resurrect and use struct page extension for some debugging features Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 1/8] mm/page_ext: resurrect struct page extending code for debugging Joonsoo Kim
2014-12-03 1:18 ` Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 2/8] mm/debug-pagealloc: prepare boottime configurable on/off Joonsoo Kim
2014-11-27 12:35 ` Paul Bolle
2014-11-28 7:35 ` Joonsoo Kim
2014-12-22 9:10 ` Paul Bolle
2014-12-23 4:56 ` Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 3/8] mm/debug-pagealloc: make debug-pagealloc boottime configurable Joonsoo Kim
2014-11-24 22:55 ` Andrew Morton
2014-11-24 23:42 ` Joonsoo Kim
2014-11-26 20:49 ` Andrew Morton
2014-11-27 5:10 ` Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 4/8] mm/nommu: use alloc_pages_exact() rather than it's own implementation Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 5/8] stacktrace: introduce snprint_stack_trace for buffer output Joonsoo Kim
2014-11-24 22:57 ` Andrew Morton
2014-11-24 23:46 ` Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 6/8] mm/page_owner: keep track of page owners Joonsoo Kim
2014-12-03 13:24 ` Chintan Pandya
2014-12-04 6:56 ` Joonsoo Kim [this message]
2014-11-24 8:15 ` [PATCH v3 7/8] mm/page_owner: correct owner information for early allocated pages Joonsoo Kim
2014-11-24 8:15 ` [PATCH v3 8/8] Documentation: add new page_owner document Joonsoo Kim
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