From patchwork Wed Mar 30 06:18:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linyu Yuan X-Patchwork-Id: 555248 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 09E1FC433F5 for ; Wed, 30 Mar 2022 06:18:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243226AbiC3GUY (ORCPT ); Wed, 30 Mar 2022 02:20:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243221AbiC3GUW (ORCPT ); Wed, 30 Mar 2022 02:20:22 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 307263A1 for ; Tue, 29 Mar 2022 23:18:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1648621115; x=1680157115; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kB3ysvfoRDzOtspBq8yaUTNmNXUZ0LmxWE8/gJrFVJU=; b=sj93Q9/GZPg6dy8BkcS3YecQ4qhPDs8TlBrnyyonNLbH+ZekaM6Y3FdI Bi2e+wW7tFee3ebi7FogmSF5SOJIhvjNhLGIoRkDuVZzSDoZSXDdNzGK6 1pYam07mLCE7Wm/EHBhikKOnMr8lU3GJC2aSAwIHe3GVynXmXZp7CFwfZ 4=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-01.qualcomm.com with ESMTP; 29 Mar 2022 23:18:30 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2022 23:18:32 -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; Tue, 29 Mar 2022 23:18:30 -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; Tue, 29 Mar 2022 23:18:28 -0700 From: Linyu Yuan To: Felipe Balbi , Greg Kroah-Hartman CC: , Jack Pham , "Linyu Yuan" Subject: [PATCH v4 2/5] usb: gadget: add trace event of configfs operation Date: Wed, 30 Mar 2022 14:18:04 +0800 Message-ID: <1648621087-14948-3-git-send-email-quic_linyyuan@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1648621087-14948-1-git-send-email-quic_linyyuan@quicinc.com> References: <1648621087-14948-1-git-send-email-quic_linyyuan@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) 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, it allow create APIs base on it to add trace events for usb gadget and function layer, then it will cover all user input like make configfs group/item, drop item, write attribute, allow/drop link. Signed-off-by: Linyu Yuan --- v2: no change v3: add trace.c and configfs.c will not include trace.h v4: no change drivers/usb/gadget/Makefile | 2 ++ drivers/usb/gadget/trace.c | 8 ++++++++ drivers/usb/gadget/trace.h | 39 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 49 insertions(+) create mode 100644 drivers/usb/gadget/trace.c create mode 100644 drivers/usb/gadget/trace.h diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 33f1ef9..b426f5c 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -8,5 +8,7 @@ subdir-ccflags-$(CONFIG_USB_GADGET_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o libcomposite-y := usbstring.o config.o epautoconf.o libcomposite-y += composite.o functions.o configfs.o u_f.o +CFLAGS_trace.o := -I$(src) +libcomposite-y += trace.o obj-$(CONFIG_USB_GADGET) += udc/ function/ legacy/ diff --git a/drivers/usb/gadget/trace.c b/drivers/usb/gadget/trace.c new file mode 100644 index 0000000..8b4b1db --- /dev/null +++ b/drivers/usb/gadget/trace.c @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#define CREATE_TRACE_POINTS +#include "trace.h" + 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