Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753446AbbDGLIt (ORCPT ); Tue, 7 Apr 2015 07:08:49 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:46017 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750994AbbDGLIr (ORCPT ); Tue, 7 Apr 2015 07:08:47 -0400 From: Xie XiuQi To: , , CC: , , , , , , , , , , , , , 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> X-Mailer: git-send-email 1.7.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.100.166] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1839 Lines: 50 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/