From patchwork Sun Mar 20 04:35:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linyu Yuan X-Patchwork-Id: 12786411 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 579D1C433F5 for ; Sun, 20 Mar 2022 04:35:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244699AbiCTEgm (ORCPT ); Sun, 20 Mar 2022 00:36:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235846AbiCTEgi (ORCPT ); Sun, 20 Mar 2022 00:36:38 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99D7AE0A3 for ; Sat, 19 Mar 2022 21:35:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1647750914; x=1679286914; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=qlJGwixuBamASEt+ES5RBWBibSXNH3GVmGQuEGVYlr4=; b=jVEXA8zayupfwzED6R4RQA/wDDnZQBm18m44eJ/B8p+s9H5ax8Pogn5G KcSklaJCHfatIPak6toqG3burTvqESuVdTGwgTA0dV1+ajkroLraDRG9N 6YdC0A/iCEwvdWcKci0+Dcs7G3JgHml3kHFYqxg0Hh/y7OYFJ+Fv0/p9s w=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 19 Mar 2022 21:35:13 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg07-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Mar 2022 21:35:13 -0700 Received: from nalasex01b.na.qualcomm.com (10.47.209.197) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sat, 19 Mar 2022 21:35:13 -0700 Received: from linyyuan-gv.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sat, 19 Mar 2022 21:35:11 -0700 From: Linyu Yuan To: Greg Kroah-Hartman CC: , Jack Pham , "Linyu Yuan" Subject: [PATCH 1/4] usb: gadget: add trace event of configfs operation Date: Sun, 20 Mar 2022 12:35:01 +0800 Message-ID: <1647750904-6524-2-git-send-email-quic_linyyuan@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1647750904-6524-1-git-send-email-quic_linyyuan@quicinc.com> References: <1647750904-6524-1-git-send-email-quic_linyyuan@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01b.na.qualcomm.com (10.47.209.197) Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Add a common trace event entry which have only one __string field, the following patch will add global function base on it to allow usb gadget and function layer use them, it will cover all user input like make configfs group/item, drop item, write attribute, allow/drop link. Signed-off-by: Linyu Yuan --- drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/configfs.c | 3 +++ drivers/usb/gadget/trace.h | 39 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+) create mode 100644 drivers/usb/gadget/trace.h diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 33f1ef9..e072a11 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -5,6 +5,7 @@ subdir-ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG subdir-ccflags-$(CONFIG_USB_GADGET_VERBOSE) += -DVERBOSE_DEBUG +CFLAGS_configfs.o := -I$(src) obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o libcomposite-y := usbstring.o config.o epautoconf.o libcomposite-y += composite.o functions.o configfs.o u_f.o diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 1fb837d..f35a226 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -123,6 +123,9 @@ static int usb_string_copy(const char *s, char **s_copy) return 0; } +#define CREATE_TRACE_POINTS +#include "trace.h" + #define GI_DEVICE_DESC_SIMPLE_R_u8(__name) \ static ssize_t gadget_dev_desc_##__name##_show(struct config_item *item, \ char *page) \ diff --git a/drivers/usb/gadget/trace.h b/drivers/usb/gadget/trace.h new file mode 100644 index 0000000..d556580 --- /dev/null +++ b/drivers/usb/gadget/trace.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM gadget_configfs + + +#if !defined(_GADGET_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define _GADGET_TRACE_H + +#include + +TRACE_EVENT(gadget_configfs, + TP_PROTO(char *info), + TP_ARGS(info), + TP_STRUCT__entry( + __string(info, info) + ), + + TP_fast_assign( + __assign_str(info, info); + ), + + TP_printk("%s", __get_str(info)) +); + +#endif /* _GADGET_TRACE_H */ + +/* this part has to be here */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . + +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE trace + +#include