From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D0F24A3412; Fri, 5 Jun 2026 08:51:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780649503; cv=none; b=SAap+amqP+Zzb/rSeTvdpKrsUYpo6Ni9ZOpGh/+uS61FJlIEAT03kgZ6uuQzNsULm4dWjZuv4oz9RCv4bN3mhxVazvervM2fxK1DSI1WAN7dUMc/CGLvWs8a3DdnPH7Yl4EHaR4tPj2jgY79KjJ8IheAGJuu6jtWJixPR6ns7Qo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780649503; c=relaxed/simple; bh=8yIvpbTVxGba6Vh2/cqlmbq+KNydJas30bcx4rW4Tjc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=JcjWvhQ2pk3bVBF8cH470YPeYkr80kP9dkXGulhcxbUiXuYJbSe6u9nxGpyph0fGL9k+fVWtFQne1J/rGOnqOjTncmCEx2V3k0majt3gUsgRTikej7ls/In3R9jos8WP5fXEVH+Udqne0tUrrOlGdUPn/Iqq2jzxTYI1RAllswY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=de1zSMnq; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="de1zSMnq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1296E1F00893; Fri, 5 Jun 2026 08:51:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780649501; bh=IIeJ9iL/lDvJySy7dwtIphbMaPaW1rE4MmoyhmBkXhM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=de1zSMnqVEgSxN0NuY43apjjCw8weSD6Yqs0qDheynej3/5uzpJ3BcBucvOjU0FqN N5O+ucZbnVM5/lKIjvqhVw8vPjrtJsckzMuhWIHkFdC77e9NNzpQ+jx60NyQAkgujA I87krPuwzgTZ1Jgz/jfIBD64CKNxVAAXnWT2xt9W/6zNWz8KjkCJf74yvuGLSMwtxv /jQWa6XQHhg+mPcJBlRoOhoA4uli8Kaz8VHLi5uobGppq6/NKgd7yRODnWjDediKfl YHexHFXdw56TOlZOBHqPHq7toE46jHuqRbYmNrYQCt80M23BJyFm5zr6hIXrEuzXUO GzdOVw5WcMD8w== Message-ID: Date: Fri, 5 Jun 2026 10:51:33 +0200 Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/memory-failure: trace: change memory_failure_event to ras subsystem To: Xie Yuanbin , qiuxu.zhuo@intel.com, bp@alien8.de, akpm@linux-foundation.org, rostedt@goodmis.org, linmiaohe@huawei.com, nao.horiguchi@gmail.com, mhiramat@kernel.org, mchehab+huawei@kernel.org, tony.luck@intel.com, yi1.lai@intel.com Cc: linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, torvalds@linux-foundation.org, lilinjie8@huawei.com, liaohua4@huawei.com References: <20260605081213.154660-1-xieyuanbin1@huawei.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/5/26 10:12, 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 > Reported-by: Qiuxu Zhuo > Closes: https://lore.kernel.org/linux-mm/CY8PR11MB7134346A3E4BB28ECA28D6E989132@CY8PR11MB7134.namprd11.prod.outlook.com > Cc: David Hildenbrand > Cc: Steven Rostedt > Cc: Borislav Petkov > Cc: Andrew Morton > Cc: Miaohe Lin > Signed-off-by: Xie Yuanbin > --- > 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) We should Cc: given that it's in v6.19 and nobody noticed :( Acked-by: David Hildenbrand (Arm) Thanks, and fortunately now I learned about possible ABI salability of trace events. -- Cheers, David