From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f173.google.com (mail-pd0-f173.google.com [209.85.192.173]) by kanga.kvack.org (Postfix) with ESMTP id 4139D6B0038 for ; Tue, 7 Apr 2015 07:15:55 -0400 (EDT) Received: by pdbnk13 with SMTP id nk13so75892044pdb.0 for ; Tue, 07 Apr 2015 04:15:55 -0700 (PDT) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com. [119.145.14.65]) by mx.google.com with ESMTPS id h8si10860962pde.174.2015.04.07.04.10.14 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 07 Apr 2015 04:15:54 -0700 (PDT) From: Xie XiuQi Subject: [RFC PATCH v3 0/2] tracing: add trace event for memory-failure Date: Tue, 7 Apr 2015 19:05:29 +0800 Message-ID: <1428404731-21565-1-git-send-email-xiexiuqi@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: n-horiguchi@ah.jp.nec.com, rostedt@goodmis.org, mingo@redhat.com Cc: akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, koct9i@gmail.com, hpa@linux.intel.com, hannes@cmpxchg.org, iamjoonsoo.kim@lge.com, luto@amacapital.net, nasa4836@gmail.com, gong.chen@linux.intel.com, bhelgaas@google.com, bp@suse.de, tony.luck@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org RAS user space tools like rasdaemon which base on trace event, could receive mce error event, but no memory recovery result event. So, I want to add this event to make this scenario complete. This patch add a event at ras group for memory-failure. The output like below: # tracer: nop # # entries-in-buffer/entries-written: 2/2 #P:24 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | mce-inject-13150 [001] .... 277.019359: memory_failure_event: pfn 0x19869: recovery action for free buddy page: Delayed -- v2->v3: - rebase on top of linux-next - based on Steven Rostedt's "tracing: Add TRACE_DEFINE_ENUM() macro to map enums to their values" patch set v1. v1->v2: - Comment update - Just passing 'result' instead of 'action_name[result]', suggested by Steve. And hard coded there because trace-cmd and perf do not have a way to process enums. Xie XiuQi (2): memory-failure: export page_type and action result tracing: add trace event for memory-failure include/linux/mm.h | 34 ++++++++++ include/ras/ras_event.h | 83 ++++++++++++++++++++++++ kernel/trace/trace.c | 2 +- mm/memory-failure.c | 165 ++++++++++++++++++++---------------------------- 4 files changed, 185 insertions(+), 99 deletions(-) -- 1.8.3.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org