+ mm-memory-failure-trace-change-memory_failure_event-to-ras-subsystem.patch added to mm-hotfixes-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/memory-failure: trace: change memory_failure_event to ras subsystem
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     mm-memory-failure-trace-change-memory_failure_event-to-ras-subsystem.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-failure-trace-change-memory_failure_event-to-ras-subsystem.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Xie Yuanbin <xieyuanbin1@huawei.com>
Subject: mm/memory-failure: trace: change memory_failure_event to ras subsystem
Date: Fri, 5 Jun 2026 16:12:13 +0800

Commit 97f0b1345219 ("tracing: add trace event for memory-failure")
introduced memory_failure_event in ras subsystem.  commit 31807483d395
("mm/memory-failure: remove the selection of RAS") changed
memory_failure_event to memory_failure subsystem.  This breaks the
backward compatibility, some user programs rely on it.

Change memory_failure_event to ras subsystem to keep backward
compatibility.

Link: https://lore.kernel.org/20260605081213.154660-1-xieyuanbin1@huawei.com
Fixes: 31807483d395 ("mm/memory-failure: remove the selection of RAS")
Signed-off-by: Xie Yuanbin <xieyuanbin1@huawei.com>
Reported-by: Yi Lai <yi1.lai@intel.com>
Reported-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Closes: https://lore.kernel.org/linux-mm/CY8PR11MB7134346A3E4BB28ECA28D6E989132@CY8PR11MB7134.namprd11.prod.outlook.com
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/trace/events/memory-failure.h |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/include/trace/events/memory-failure.h~mm-memory-failure-trace-change-memory_failure_event-to-ras-subsystem
+++ a/include/trace/events/memory-failure.h
@@ -1,6 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
-#define TRACE_SYSTEM memory_failure
+/*
+ * For historical versions, memory_failure_event is in ras subsystem,
+ * some user programs depend on it.
+ */
+#define TRACE_SYSTEM ras
 #define TRACE_INCLUDE_FILE memory-failure
 
 #if !defined(_TRACE_MEMORY_FAILURE_H) || defined(TRACE_HEADER_MULTI_READ)
_

Patches currently in -mm which might be from xieyuanbin1@huawei.com are

mm-memory-failure-trace-change-memory_failure_event-to-ras-subsystem.patch