From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755096Ab3H2OTY (ORCPT ); Thu, 29 Aug 2013 10:19:24 -0400 Received: from mail-qc0-f176.google.com ([209.85.216.176]:59725 "EHLO mail-qc0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754284Ab3H2OTU (ORCPT ); Thu, 29 Aug 2013 10:19:20 -0400 MIME-Version: 1.0 Date: Thu, 29 Aug 2013 19:41:28 +0530 Message-ID: Subject: wakeup tracer not able to capture traces on 3.4 kernel From: Prabhat Kumar Ravi To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I trying to capture traces through wakeup tracer, but not able to capture it on 3.4 kernel with cortex A9 processor, armv7. {{{ / # mount -t debugfs nodev /debug / # sysctl kernel.ftrace_enabled=1 kernel.ftrace_enabled = 1 / # echo wakeup > /debug/tracing/current_tracer / # echo latency-format > /debug/tracing/trace_options / # echo 0 > /debug/tracing/tracing_max_latency / # echo 1 > /debug/tracing/tracing_on / # sleep 10 / # echo 0 > /debug/tracing/tracing_on / # cat /debug/tracing/trace # tracer: wakeup # }}} Please suggest me where I am wrong. Regards, Prabhat