From patchwork Thu Jan 28 07:25:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shilpasri G Bhat X-Patchwork-Id: 8147061 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 51B1B9FE6C for ; Thu, 28 Jan 2016 07:27:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8293C20328 for ; Thu, 28 Jan 2016 07:27:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F6592034F for ; Thu, 28 Jan 2016 07:27:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932651AbcA1H1T (ORCPT ); Thu, 28 Jan 2016 02:27:19 -0500 Received: from e23smtp01.au.ibm.com ([202.81.31.143]:54267 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932516AbcA1H1Q (ORCPT ); Thu, 28 Jan 2016 02:27:16 -0500 Received: from localhost by e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Thu, 28 Jan 2016 17:27:10 +1000 X-IBM-Helo: d23dlp03.au.ibm.com X-IBM-MailFrom: shilpa.bhat@linux.vnet.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org;linux-pm@vger.kernel.org Received: from d23relay08.au.ibm.com (d23relay08.au.ibm.com [9.185.71.33]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id CE3103578055; Thu, 28 Jan 2016 18:27:09 +1100 (EST) Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay08.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0S7QcxE31785134; Thu, 28 Jan 2016 18:26:46 +1100 Received: from d23av03.au.ibm.com (localhost [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0S7QZOR030278; Thu, 28 Jan 2016 18:26:37 +1100 Received: from localhost.in.ibm.com ([9.79.177.109]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u0S7Q6rt028456; Thu, 28 Jan 2016 18:26:32 +1100 From: Shilpasri G Bhat To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Cc: rjw@rjwysocki.net, viresh.kumar@linaro.org, linux-pm@vger.kernel.org, pc@us.ibm.com, anton@samba.org, ego@linux.vnet.ibm.com, shreyas@linux.vnet.ibm.com, bsingharora@gmail.com, mpe@ellerman.id.au, Shilpasri G Bhat , Ingo Molnar , Steven Rostedt Subject: [PATCH v7 4/6] cpufreq: powernv/tracing: Add powernv_throttle tracepoint Date: Thu, 28 Jan 2016 12:55:39 +0530 Message-Id: <1453965941-7363-5-git-send-email-shilpa.bhat@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1453965941-7363-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> References: <1453965941-7363-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16012807-1618-0000-0000-00000395D856 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds the powernv_throttle tracepoint to trace the CPU frequency throttling event, which is used by the powernv-cpufreq driver in POWER8. Signed-off-by: Shilpasri G Bhat Reviewed-by: Gautham R. Shenoy CC: Ingo Molnar CC: Steven Rostedt --- No changes since v2. include/trace/events/power.h | 22 ++++++++++++++++++++++ kernel/trace/power-traces.c | 1 + 2 files changed, 23 insertions(+) diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 284244e..19e5030 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -38,6 +38,28 @@ DEFINE_EVENT(cpu, cpu_idle, TP_ARGS(state, cpu_id) ); +TRACE_EVENT(powernv_throttle, + + TP_PROTO(int chip_id, const char *reason, int pmax), + + TP_ARGS(chip_id, reason, pmax), + + TP_STRUCT__entry( + __field(int, chip_id) + __string(reason, reason) + __field(int, pmax) + ), + + TP_fast_assign( + __entry->chip_id = chip_id; + __assign_str(reason, reason); + __entry->pmax = pmax; + ), + + TP_printk("Chip %d Pmax %d %s", __entry->chip_id, + __entry->pmax, __get_str(reason)) +); + TRACE_EVENT(pstate_sample, TP_PROTO(u32 core_busy, diff --git a/kernel/trace/power-traces.c b/kernel/trace/power-traces.c index eb4220a..81b8745 100644 --- a/kernel/trace/power-traces.c +++ b/kernel/trace/power-traces.c @@ -15,4 +15,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(suspend_resume); EXPORT_TRACEPOINT_SYMBOL_GPL(cpu_idle); +EXPORT_TRACEPOINT_SYMBOL_GPL(powernv_throttle);