From patchwork Mon Mar 28 06:39:49 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "(Exiting) Baolin Wang" X-Patchwork-Id: 8678301 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 727C0C0553 for ; Mon, 28 Mar 2016 06:40:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 646672021B for ; Mon, 28 Mar 2016 06:40:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3CEC22020F for ; Mon, 28 Mar 2016 06:40:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754610AbcC1Gki (ORCPT ); Mon, 28 Mar 2016 02:40:38 -0400 Received: from mail-pf0-f180.google.com ([209.85.192.180]:34500 "EHLO mail-pf0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754604AbcC1Gkh (ORCPT ); Mon, 28 Mar 2016 02:40:37 -0400 Received: by mail-pf0-f180.google.com with SMTP id x3so130204256pfb.1 for ; Sun, 27 Mar 2016 23:40:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=xug9YSSr9zTIiC7MRZoeNaRvDEMs1hy5tWG20n3PlSw=; b=Yovt5RtiQXBmoFjrO6tX+MohRzyn0CdX/pWtbgU+ul1JEYkg5qHtCriz+vJ6/IkJYZ ssPw3XdrKdaGpDyQqKXvPJNQpd8jaM5WI2K+0hX1HQPO4L9wJeHEpvGr+D1KFNs//zBH x33I2+XtEbmrnoQ+IK3DJWwi2sc3RK2zqLvss= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=xug9YSSr9zTIiC7MRZoeNaRvDEMs1hy5tWG20n3PlSw=; b=fv7HtRWzYuceNTp0Pto0O66OQy1spuc+xJlQYeGE2A/ISXAmDWItPwTIAvu+6iq4zm VCwBz9TS4LZSK6KVDVM4W7nNBXHJjpjQJt4gXQCFKFRheY2VSUenWWPejAHR03Npo2Wt bSY6DNaLQFi4sHBm6QDOjEKswAVENOz6VCQjy0Qc72NyGJl7E1jYYwna15fx350H86MI gTqSvPOV+t4f8hUcP9L625k1mVvGxmhsPLVQgN6t7OuyEWYbxG9ij28UdpKuddV/GZR2 BXOXiG/O2DmAk/qqqLpe4jrq0GbGLNBpZhMkwmEiBQ7cPnXrIkVt5/8NHePlfRvJ9xd5 83rg== X-Gm-Message-State: AD7BkJJLFJLLkD3QhWYt6pRpTcItyhlKosEtw31jlsSI5hFZ6bkAvkVPlIDTHe5SzZwK1KeS X-Received: by 10.98.65.14 with SMTP id o14mr39683854pfa.151.1459147236746; Sun, 27 Mar 2016 23:40:36 -0700 (PDT) Received: from baolinwangubtpc.spreadtrum.com ([175.111.195.49]) by smtp.gmail.com with ESMTPSA id p74sm32656686pfa.11.2016.03.27.23.40.30 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 27 Mar 2016 23:40:36 -0700 (PDT) From: Baolin Wang To: ulf.hansson@linaro.org, rostedt@goodmis.org, mingo@redhat.com Cc: adrian.hunter@intel.com, yangbo.lu@freescale.com, akpm@linux-foundation.org, JBottomley@Odin.com, lporzio@micron.com, jonathanh@nvidia.com, grundler@chromium.org, axboe@fb.com, fabf@skynet.be, yunpeng.gao@intel.com, dan.j.williams@intel.com, rabin.vincent@axis.com, chuanxiao.dong@intel.com, shawn.lin@rock-chips.com, heiko@sntech.de, dianders@chromium.org, david@protonic.nl, broonie@kernel.org, linus.walleij@linaro.org, takahiro.akashi@linaro.org, baolin.wang@linaro.org, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org Subject: [PATCH v3] mmc: Provide tracepoints for request processing Date: Mon, 28 Mar 2016 14:39:49 +0800 Message-Id: <45a62181170848cbd00c8e863f7c84772f2a8a5c.1459147046.git.baolin.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,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 provides some tracepoints for the lifecycle of a mmc request from starting to completion to help with performance analysis of MMC subsystem. Changes since v2: - Remove some redundant tracepoints which are repeated in block layer. Signed-off-by: Baolin Wang --- drivers/mmc/core/core.c | 7 +++ include/trace/events/mmc.h | 129 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+) create mode 100644 include/trace/events/mmc.h diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index f95d41f..7222e3f 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -36,6 +36,9 @@ #include #include +#define CREATE_TRACE_POINTS +#include + #include "core.h" #include "bus.h" #include "host.h" @@ -152,6 +155,8 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) led_trigger_event(host->led, LED_OFF); + trace_mmc_request_done(host, mrq); + if (mrq->sbc) { pr_debug("%s: req done : %d: %08x %08x %08x %08x\n", mmc_hostname(host), mrq->sbc->opcode, @@ -229,6 +234,8 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) if (mmc_card_removed(host->card)) return -ENOMEDIUM; + trace_mmc_request_start(host, mrq); + if (mrq->sbc) { pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n", mmc_hostname(host), mrq->sbc->opcode, diff --git a/include/trace/events/mmc.h b/include/trace/events/mmc.h new file mode 100644 index 0000000..e231bd5 --- /dev/null +++ b/include/trace/events/mmc.h @@ -0,0 +1,129 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM mmc + +#if !defined(_TRACE_MMC_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_MMC_H + +#include +#include +#include +#include + +TRACE_EVENT(mmc_request_start, + + TP_PROTO(struct mmc_host *host, struct mmc_request *mrq), + + TP_ARGS(host, mrq), + + TP_STRUCT__entry( + __field(u32, cmd_opcode) + __field(u32, cmd_arg) + __field(unsigned int, cmd_flags) + __field(u32, stop_opcode) + __field(u32, stop_arg) + __field(unsigned int, stop_flags) + __field(u32, sbc_opcode) + __field(u32, sbc_arg) + __field(unsigned int, sbc_flags) + __field(unsigned int, blocks) + __field(unsigned int, blksz) + __field(unsigned int, data_flags) + __field(struct mmc_request *, mrq) + __string(name, mmc_hostname(host)) + ), + + TP_fast_assign( + __entry->cmd_opcode = mrq->cmd->opcode; + __entry->cmd_arg = mrq->cmd->arg; + __entry->cmd_flags = mrq->cmd->flags; + __entry->stop_opcode = mrq->stop ? mrq->stop->opcode : 0; + __entry->stop_arg = mrq->stop ? mrq->stop->arg : 0; + __entry->stop_flags = mrq->stop ? mrq->stop->flags : 0; + __entry->sbc_opcode = mrq->sbc ? mrq->sbc->opcode : 0; + __entry->sbc_arg = mrq->sbc ? mrq->sbc->arg : 0; + __entry->sbc_flags = mrq->sbc ? mrq->sbc->flags : 0; + __entry->blksz = mrq->data ? mrq->data->blksz : 0; + __entry->blocks = mrq->data ? mrq->data->blocks : 0; + __entry->data_flags = mrq->data ? mrq->data->flags : 0; + __assign_str(name, mmc_hostname(host)); + __entry->mrq = mrq; + ), + + TP_printk("%s: start struct mmc_request[%p]: " + "cmd_opcode=%u cmd_arg=0x%x cmd_flags=0x%x " + "stop_opcode=%u stop_arg=0x%x stop_flags=0x%x " + "sbc_opcode=%u sbc_arg=0x%x sbc_flags=0x%x " + "blocks=%u blksz=%u data_flags=0x%x", + __get_str(name), __entry->mrq, + __entry->cmd_opcode, __entry->cmd_arg, __entry->cmd_flags, + __entry->stop_opcode, __entry->stop_arg, __entry->stop_flags, + __entry->sbc_opcode, __entry->sbc_arg, __entry->sbc_flags, + __entry->blocks, __entry->blksz, __entry->data_flags) +); + +TRACE_EVENT(mmc_request_done, + + TP_PROTO(struct mmc_host *host, struct mmc_request *mrq), + + TP_ARGS(host, mrq), + + TP_STRUCT__entry( + __field(u32, cmd_opcode) + __field(int, cmd_err) + __array(u32, cmd_resp, 4) + __field(u32, stop_opcode) + __field(int, stop_err) + __array(u32, stop_resp, 4) + __field(u32, sbc_opcode) + __field(int, sbc_err) + __array(u32, sbc_resp, 4) + __field(unsigned int, bytes_xfered) + __field(int, data_err) + __field(struct mmc_request *, mrq) + __string(name, mmc_hostname(host)) + ), + + TP_fast_assign( + __entry->cmd_opcode = mrq->cmd->opcode; + __entry->cmd_err = mrq->cmd->error; + memcpy(__entry->cmd_resp, mrq->cmd->resp, 4); + __entry->stop_opcode = mrq->stop ? mrq->stop->opcode : 0; + __entry->stop_err = mrq->stop ? mrq->stop->error : 0; + __entry->stop_resp[0] = mrq->stop ? mrq->stop->resp[0] : 0; + __entry->stop_resp[1] = mrq->stop ? mrq->stop->resp[1] : 0; + __entry->stop_resp[2] = mrq->stop ? mrq->stop->resp[2] : 0; + __entry->stop_resp[3] = mrq->stop ? mrq->stop->resp[3] : 0; + __entry->sbc_opcode = mrq->sbc ? mrq->sbc->opcode : 0; + __entry->sbc_err = mrq->sbc ? mrq->sbc->error : 0; + __entry->sbc_resp[0] = mrq->sbc ? mrq->sbc->resp[0] : 0; + __entry->sbc_resp[1] = mrq->sbc ? mrq->sbc->resp[1] : 0; + __entry->sbc_resp[2] = mrq->sbc ? mrq->sbc->resp[2] : 0; + __entry->sbc_resp[3] = mrq->sbc ? mrq->sbc->resp[3] : 0; + __entry->bytes_xfered = mrq->data ? mrq->data->bytes_xfered : 0; + __entry->data_err = mrq->data ? mrq->data->error : 0; + __assign_str(name, mmc_hostname(host)); + __entry->mrq = mrq; + ), + + TP_printk("%s: end struct mmc_request[%p]: " + "cmd_opcode=%u cmd_err=%d cmd_resp=0x%x 0x%x 0x%x 0x%x " + "stop_opcode=%u stop_err=%d stop_resp=0x%x 0x%x 0x%x 0x%x " + "sbc_opcode=%u sbc_err=%d sbc_resp=0x%x 0x%x 0x%x 0x%x " + "bytes_xfered=%u data_err=%d", + __get_str(name), __entry->mrq, + __entry->cmd_opcode, __entry->cmd_err, + __entry->cmd_resp[0], __entry->cmd_resp[1], + __entry->cmd_resp[2], __entry->cmd_resp[3], + __entry->stop_opcode, __entry->stop_err, + __entry->stop_resp[0], __entry->stop_resp[1], + __entry->stop_resp[2], __entry->stop_resp[3], + __entry->sbc_opcode, __entry->sbc_err, + __entry->sbc_resp[0], __entry->sbc_resp[1], + __entry->sbc_resp[2], __entry->sbc_resp[3], + __entry->bytes_xfered, __entry->data_err) +); + +#endif /* _TRACE_MMC_H */ + +/* This part must be outside protection */ +#include