Re: [PATCH] mm/memory-failure: trace: change memory_failure_event to ras subsystem

[Lance Yang]

On Fri, Jun 05, 2026 at 04:12:13PM +0800, Xie Yuanbin wrote:
>For historical version, 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.
>
>Fixes: 31807483d395 ("mm/memory-failure: remove the selection of RAS")
>
>Reported-by: Yi Lai <yi1.lai@xxxxxxxxx>
>Reported-by: Qiuxu Zhuo <qiuxu.zhuo@xxxxxxxxx>
>Closes: https://lore.kernel.org/linux-mm/CY8PR11MB7134346A3E4BB28ECA28D6E989132@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>Cc: David Hildenbrand <david@xxxxxxxxxx>
>Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
>Cc: Borislav Petkov <bp@xxxxxxxxx>
>Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
>Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
>Signed-off-by: Xie Yuanbin <xieyuanbin1@xxxxxxxxxx>
>---
> include/trace/events/memory-failure.h | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
>diff --git a/include/trace/events/memory-failure.h b/include/trace/events/memory-failure.h
>index aa57cc8f896b..7a8ee5d1a44e 100644
>--- a/include/trace/events/memory-failure.h
>+++ b/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)
>-- 

Thanks. Feel free to add:
Reviewed-by: Lance Yang <lance.yang@xxxxxxxxx>