From patchwork Wed Mar 30 04:36:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linyu Yuan X-Patchwork-Id: 555535 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 B2374C433FE for ; Wed, 30 Mar 2022 04:36:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242615AbiC3EiW (ORCPT ); Wed, 30 Mar 2022 00:38:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242660AbiC3EiQ (ORCPT ); Wed, 30 Mar 2022 00:38:16 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5DA0C22B18 for ; Tue, 29 Mar 2022 21:36:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1648614992; x=1680150992; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=oNyAYn2iRB9DghlnpbxutG5HqEHxLidQEAxBj35aa9A=; b=hBSQyf2nn+NBRdpmaaveugVL5dyrHZlY4TreZUvWTamtAjD9XGy29gk3 XIP5wETCfuC8wZvI/+DZ2xTD2+bpuBZHYz+Y+MDF+Qat9vxzn6Nm+BIe5 rC59/bN6MWCMq48Wn5kSx+mOaCfpORXGNQL0/1c70tydvl8TLrT2KBU0X E=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 29 Mar 2022 21:36:32 -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; 29 Mar 2022 21:36:31 -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 21:36:31 -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 21:36:29 -0700 From: Linyu Yuan To: Felipe Balbi , Greg Kroah-Hartman CC: , Jack Pham , "Linyu Yuan" Subject: [PATCH v3 2/5] usb: gadget: add trace event of configfs operation Date: Wed, 30 Mar 2022 12:36:17 +0800 Message-ID: <1648614980-25024-3-git-send-email-quic_linyyuan@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1648614980-25024-1-git-send-email-quic_linyyuan@quicinc.com> References: <1648614980-25024-1-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 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