From: Mauricio Faria de Oliveira <mfo@igalia.com>
To: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>,
Oscar Salvador <osalvador@suse.de>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kernel-dev@igalia.com
Subject: [PATCH RFC 1/9] mm: add config option SWAP_PAGE_OWNER
Date: Fri, 5 Dec 2025 20:17:13 -0300 [thread overview]
Message-ID: <20251205231721.104505-2-mfo@igalia.com> (raw)
In-Reply-To: <20251205231721.104505-1-mfo@igalia.com>
Add config option for page_owner support for pages in swap space.
Signed-off-by: Mauricio Faria de Oliveira <mfo@igalia.com>
---
mm/Kconfig.debug | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index 7638d75b27db..60bc0b6c3d69 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -119,6 +119,15 @@ config PAGE_OWNER
If unsure, say N.
+config SWAP_PAGE_OWNER
+ bool "Track page owner in swap space (EXPERIMENTAL)"
+ depends on PAGE_OWNER
+ help
+ This also keeps track of what call chain is the owner of a page
+ in swap space, maintaining the initial call chain over swap-out
+ and swap-in (otherwise lost at swap-out and reset at swap-in).
+ You should pass the "page_owner=on,swap" parameter to enable it.
+
config PAGE_TABLE_CHECK
bool "Check for invalid mappings in user page tables"
depends on ARCH_SUPPORTS_PAGE_TABLE_CHECK
--
2.51.0
next prev parent reply other threads:[~2025-12-05 23:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-05 23:17 [PATCH RFC 0/9] mm/page_owner: add support for pages in swap space Mauricio Faria de Oliveira
2025-12-05 23:17 ` Mauricio Faria de Oliveira [this message]
2025-12-05 23:17 ` [PATCH RFC 2/9] mm/page_owner: add parameter option 'page_owner=on,swap' Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 3/9] mm/page_owner: add 'struct swap_page_owner' and helpers Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 4/9] mm/page_owner: add 'xarray swap_page_owners' " Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 5/9] mm/page_owner: add swap hooks Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 6/9] mm/page_owner: report '(swapped)' pages in debugfs file 'page_owner' Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 7/9] mm/page_owner: add debugfs file 'swap_page_owner' Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 8/9] mm: call arch-specific swap hooks from generic swap hooks Mauricio Faria de Oliveira
2025-12-05 23:17 ` [PATCH RFC 9/9] mm: call page_owner " Mauricio Faria de Oliveira
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