From: Oscar Salvador <osalvador@suse.de>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Michal Hocko <mhocko@suse.com>, Marco Elver <elver@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Alexander Potapenko <glider@google.com>
Subject: Re: [PATCH v8 2/5] mm,page_owner: Implement the tracking of the stacks count
Date: Tue, 13 Feb 2024 17:04:38 +0100 [thread overview]
Message-ID: <ZcuTFo-EMWjbRsd6@localhost.localdomain> (raw)
In-Reply-To: <ZcuK2I6ZwFwFX-G5@localhost.localdomain>
On Tue, Feb 13, 2024 at 04:29:28PM +0100, Oscar Salvador wrote:
> I thought about giving them a refcount of 1, because we only print
> stacks which refcount > 1 anyways, but setting it to 0 has comes with
> the advantage of catching spurious increments, should someone call
> refcount_inc on those (which should not really happen).
On a second thought, I think we want a refcount of 1 for these stacks
at the beginning.
So should we e.g: re-enter page_owner, we would increment dummy_stack's
refcount. If refcount is 0, we will get a warning.
--
Oscar Salvador
SUSE Labs
next prev parent reply other threads:[~2024-02-13 16:04 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-12 22:30 [PATCH v8 0/5] page_owner: print stacks and their outstanding allocations Oscar Salvador
2024-02-12 22:30 ` [PATCH v8 1/5] lib/stackdepot: Move stack_record struct definition into the header Oscar Salvador
2024-02-13 8:26 ` Marco Elver
2024-02-13 11:12 ` Vlastimil Babka
2024-02-12 22:30 ` [PATCH v8 2/5] mm,page_owner: Implement the tracking of the stacks count Oscar Salvador
2024-02-13 8:30 ` Marco Elver
2024-02-13 9:16 ` Oscar Salvador
2024-02-13 9:16 ` Vlastimil Babka
2024-02-13 9:21 ` Marco Elver
2024-02-13 11:34 ` Vlastimil Babka
2024-02-13 12:40 ` Oscar Salvador
2024-02-13 12:58 ` Marco Elver
2024-02-13 9:46 ` Oscar Salvador
2024-02-13 13:42 ` Vlastimil Babka
2024-02-13 15:29 ` Oscar Salvador
2024-02-13 16:04 ` Oscar Salvador [this message]
2024-02-12 22:30 ` [PATCH v8 3/5] mm,page_owner: Display all stacks and their count Oscar Salvador
2024-02-13 8:38 ` Marco Elver
2024-02-13 9:19 ` Oscar Salvador
2024-02-13 14:25 ` Vlastimil Babka
2024-02-13 15:33 ` Oscar Salvador
2024-02-13 15:36 ` Vlastimil Babka
2024-02-12 22:30 ` [PATCH v8 4/5] mm,page_owner: Filter out stacks by a threshold Oscar Salvador
2024-02-13 8:41 ` Marco Elver
2024-02-13 8:44 ` Marco Elver
2024-02-13 9:21 ` Oscar Salvador
2024-02-13 14:56 ` Vlastimil Babka
2024-02-12 22:30 ` [PATCH v8 5/5] mm,page_owner: Update Documentation regarding page_owner_stacks Oscar Salvador
2024-02-13 8:45 ` Marco Elver
2024-02-13 9:13 ` Oscar Salvador
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