From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 45619C3DA59 for ; Mon, 15 Jul 2024 13:39:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Zeh6fFRRzkKvSvPPT6wGe9vTILovV10+pWEtSOfvTlc=; b=ODBLrbJ5UX1rWnYI+RPZVLju+h 9nNTDrzgMLBMrAJs3g3nZx4yNL3PceJAg14TqKH4M/TKPqqe90OkFqOig50/9m75Qm7hAPeKihj3D ZjagAEwmBLiq8VEJdQlTqfgOJomLGYyZK2H7KAFiYTauVyfX89irMF7qINq/F2wyTjE3t8OTNYHh1 23XNU/lXkw+rUaSiWRbuTqeg8Y0WeBgc5p7nc9m2cRjC5MoP/nhOJjqOVZYdT4obo66pmPF7nh+b9 jguGtQ9FvQ7o8e+zUyXZZhYMJc/nP9VprCwwxnhcli3kJVtI+Kr6r2Cz5zvj6VG1LO7JzF5uMUhpj 24EcWCPw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sTLuq-00000007EtS-2ix8; Mon, 15 Jul 2024 13:38:56 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sTLu3-00000007EZK-3b9g for linux-arm-kernel@lists.infradead.org; Mon, 15 Jul 2024 13:38:09 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C897EDA7; Mon, 15 Jul 2024 06:38:32 -0700 (PDT) Received: from thinkcentre-m93p.cambridge.arm.com (thinkcentre-m93p.cambridge.arm.com [10.1.197.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9DE7F3F73F; Mon, 15 Jul 2024 06:38:06 -0700 (PDT) From: Luke Parkin To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, arm-scmi@vger.kernel.org Cc: sudeep.holla@arm.com, cristian.marussi@arm.com, Luke Parkin Subject: [PATCH v3 2/5] firmware: arm_scmi: Add support for tracking statistics Date: Mon, 15 Jul 2024 14:37:48 +0100 Message-Id: <20240715133751.2877197-3-luke.parkin@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240715133751.2877197-1-luke.parkin@arm.com> References: <20240715133751.2877197-1-luke.parkin@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240715_063807_998946_069DEB58 X-CRM114-Status: GOOD ( 13.18 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a new config option for statistic tracking in SCMI subsystem Add an array and enum for tracking statistics Add scmi_log_stats op/no-op function for incrementing statistics Signed-off-by: Luke Parkin --- v2->v3 Switch to an enum & array method of storing statistics v1->v2 Config option now depends on DEBUG_FS Add scmi_log_stats rather than if(IS_ENABLED) Move location of scmi_debug_stats in the scmi_info struct --- drivers/firmware/arm_scmi/Kconfig | 11 +++++++++++ drivers/firmware/arm_scmi/common.h | 9 +++++++++ drivers/firmware/arm_scmi/driver.c | 6 ++++++ 3 files changed, 26 insertions(+) diff --git a/drivers/firmware/arm_scmi/Kconfig b/drivers/firmware/arm_scmi/Kconfig index aa5842be19b2..45e8e7df927e 100644 --- a/drivers/firmware/arm_scmi/Kconfig +++ b/drivers/firmware/arm_scmi/Kconfig @@ -55,6 +55,17 @@ config ARM_SCMI_RAW_MODE_SUPPORT_COEX operate normally, thing which could make an SCMI test suite using the SCMI Raw mode support unreliable. If unsure, say N. +config ARM_SCMI_DEBUG_STATISTICS + bool "Enable SCMI Raw mode statistic tracking" + select ARM_SCMI_NEED_DEBUGFS + depends on DEBUG_FS + help + Enables statistic tracking for the SCMI subsystem. + + Enable this option to create a new debugfs directory which contains + several useful statistics on various SCMI features. This can be useful + for debugging and SCMI monitoring. If unsure, say N. + config ARM_SCMI_HAVE_TRANSPORT bool help diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index b5ac25dbc1ca..157df695aeb1 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -301,6 +301,15 @@ extern const struct scmi_desc scmi_optee_desc; void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr, void *priv); +#ifdef CONFIG_ARM_SCMI_DEBUG_STATISTICS +static inline void scmi_log_stats(atomic_t *arr, int stat) +{ + atomic_inc(&arr[stat]); +} +#else +static inline void scmi_log_stats(atomic_t *arr, int stat) {} +#endif + enum scmi_bad_msg { MSG_UNEXPECTED = -1, MSG_INVALID = -2, diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 56a93d20bf23..6edec6ec912d 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -125,6 +125,10 @@ struct scmi_debug_info { bool is_atomic; }; +enum debug_stat_counters { + LAST +}; + /** * struct scmi_info - Structure representing a SCMI instance * @@ -161,6 +165,7 @@ struct scmi_debug_info { * bus * @devreq_mtx: A mutex to serialize device creation for this SCMI instance * @dbg: A pointer to debugfs related data (if any) + * @dbg_stats: An array of atomic_c's used for tracking statistics (if enabled) * @raw: An opaque reference handle used by SCMI Raw mode. */ struct scmi_info { @@ -187,6 +192,7 @@ struct scmi_info { /* Serialize device creation process for this instance */ struct mutex devreq_mtx; struct scmi_debug_info *dbg; + atomic_t dbg_stats[LAST]; void *raw; }; -- 2.34.1