From patchwork Tue Apr 25 14:35:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13223416 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 4EA28C77B61 for ; Tue, 25 Apr 2023 14:37:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=sSKiB1JPtbG9QKT/e9D6jXGQKU7V79UaLO/1FAK5oeg=; b=iboDAOv+iZa0sD oezqwYNBAYtpmyf3hERD8xsA9b4hjMMe6nSucTNAOYdwlU1Z16fmZXKdqPWLrSxXhTNBKOsGn5YsV 8MQVHVpHqTXRiPX8UJbgvXOGINm5Qe/agp7mKM9Wxwbnd/HiH3N3zcMNwMtQhe0PSAyXNhoSuEk3f yz9SWdyQuGFxhgMFU533/3xduit/MIB1/5j8EDAiC9MyR3c7s7/vx9tKgHxDd4C5EGeJPKY/28X8s tC+2F23OotgVFpKoDxLpiQXSHy9zcuM19eVI6QaFIQe3t4qtDu+lhPeezjDB8CYcvOgBEh8kBAET3 tUcXXbIoA54vr0s4P8XQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1prJmR-001P4n-0I; Tue, 25 Apr 2023 14:36:31 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1prJmK-001P2w-17 for linux-arm-kernel@lists.infradead.org; Tue, 25 Apr 2023 14:36:26 +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 4275E4B3; Tue, 25 Apr 2023 07:37:06 -0700 (PDT) Received: from localhost.localdomain (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B0E9C3F840; Tue, 25 Apr 2023 07:36:20 -0700 (PDT) From: James Clark To: coresight@lists.linaro.org, quic_jinlmao@quicinc.com, mike.leach@linaro.org, suzuki.poulose@arm.com Cc: James Clark , Leo Yan , Alexander Shishkin , Mathieu Poirier , Greg Kroah-Hartman , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 02/13] coresight: Use enum type for cs_mode wherever possible Date: Tue, 25 Apr 2023 15:35:29 +0100 Message-Id: <20230425143542.2305069-3-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230425143542.2305069-1-james.clark@arm.com> References: <20230425143542.2305069-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230425_073624_478359_AFED1A2D X-CRM114-Status: GOOD ( 17.98 ) 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 mode is stored as a local_t, but it is also passed around a lot as a plain u32, so use the correct type wherever local_t isn't currently used. This helps a little bit with readability. Reviewed-by: Mike Leach Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-core.c | 7 ++++--- drivers/hwtracing/coresight/coresight-etb10.c | 3 ++- drivers/hwtracing/coresight/coresight-etm3x-core.c | 6 +++--- drivers/hwtracing/coresight/coresight-etm4x-core.c | 6 +++--- drivers/hwtracing/coresight/coresight-priv.h | 9 ++------- drivers/hwtracing/coresight/coresight-stm.c | 6 +++--- drivers/hwtracing/coresight/coresight-tmc-etf.c | 2 +- drivers/hwtracing/coresight/coresight-tmc-etr.c | 7 +++---- drivers/hwtracing/coresight/coresight-tpdm.c | 4 ++-- drivers/hwtracing/coresight/coresight-tpiu.c | 3 ++- drivers/hwtracing/coresight/coresight-trbe.c | 3 ++- drivers/hwtracing/coresight/ultrasoc-smb.c | 3 ++- drivers/hwtracing/coresight/ultrasoc-smb.h | 2 +- include/linux/coresight.h | 13 ++++++++++--- 14 files changed, 40 insertions(+), 34 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 5733294ce5cd..c891078dffc6 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -308,7 +308,7 @@ void coresight_set_assoc_ectdev_mutex(struct coresight_device *csdev, EXPORT_SYMBOL_GPL(coresight_set_assoc_ectdev_mutex); static int coresight_enable_sink(struct coresight_device *csdev, - u32 mode, void *data) + enum cs_mode mode, void *data) { int ret; @@ -416,7 +416,8 @@ static void coresight_disable_link(struct coresight_device *csdev, csdev->enable = false; } -static int coresight_enable_source(struct coresight_device *csdev, u32 mode) +static int coresight_enable_source(struct coresight_device *csdev, + enum cs_mode mode) { int ret; @@ -516,7 +517,7 @@ void coresight_disable_path(struct list_head *path) } EXPORT_SYMBOL_GPL(coresight_disable_path); -int coresight_enable_path(struct list_head *path, u32 mode, void *sink_data) +int coresight_enable_path(struct list_head *path, enum cs_mode mode, void *sink_data) { int ret = 0; diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 8aa6e4f83e42..eb99c445015a 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -225,7 +225,8 @@ static int etb_enable_perf(struct coresight_device *csdev, void *data) return ret; } -static int etb_enable(struct coresight_device *csdev, u32 mode, void *data) +static int etb_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { int ret; diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index afc57195ee52..116a91d90ac2 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -552,8 +552,8 @@ static int etm_enable_sysfs(struct coresight_device *csdev) return ret; } -static int etm_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int etm_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { int ret; u32 val; @@ -671,7 +671,7 @@ static void etm_disable_sysfs(struct coresight_device *csdev) static void etm_disable(struct coresight_device *csdev, struct perf_event *event) { - u32 mode; + enum cs_mode mode; struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); /* diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 1ea8f173cca0..2ff4c42ea688 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -822,8 +822,8 @@ static int etm4_enable_sysfs(struct coresight_device *csdev) return ret; } -static int etm4_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int etm4_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { int ret; u32 val; @@ -989,7 +989,7 @@ static void etm4_disable_sysfs(struct coresight_device *csdev) static void etm4_disable(struct coresight_device *csdev, struct perf_event *event) { - u32 mode; + enum cs_mode mode; struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); /* diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 595ce5862056..788ff19c60f6 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -82,12 +82,6 @@ enum etm_addr_type { ETM_ADDR_TYPE_STOP, }; -enum cs_mode { - CS_MODE_DISABLED, - CS_MODE_SYSFS, - CS_MODE_PERF, -}; - /** * struct cs_buffer - keep track of a recording session' specifics * @cur: index of the current buffer @@ -133,7 +127,8 @@ static inline void CS_UNLOCK(void __iomem *addr) } void coresight_disable_path(struct list_head *path); -int coresight_enable_path(struct list_head *path, u32 mode, void *sink_data); +int coresight_enable_path(struct list_head *path, enum cs_mode mode, + void *sink_data); struct coresight_device *coresight_get_sink(struct list_head *path); struct coresight_device * coresight_get_enabled_sink(struct coresight_device *source); diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 66a614c5492c..a1c27c901ad1 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -119,7 +119,7 @@ DEFINE_CORESIGHT_DEVLIST(stm_devs, "stm"); * @spinlock: only one at a time pls. * @chs: the channels accociated to this STM. * @stm: structure associated to the generic STM interface. - * @mode: this tracer's mode, i.e sysFS, or disabled. + * @mode: this tracer's mode (enum cs_mode), i.e sysFS, or disabled. * @traceid: value of the current ID for this component. * @write_bytes: Maximus bytes this STM can write at a time. * @stmsper: settings for register STMSPER. @@ -192,8 +192,8 @@ static void stm_enable_hw(struct stm_drvdata *drvdata) CS_LOCK(drvdata->base); } -static int stm_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int stm_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { u32 val; struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 0ab1f73c2d06..14d3c1472455 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -302,7 +302,7 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data) } static int tmc_enable_etf_sink(struct coresight_device *csdev, - u32 mode, void *data) + enum cs_mode mode, void *data) { int ret; diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 918d461fcf4a..ed589cfff1b5 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1666,17 +1666,16 @@ static int tmc_enable_etr_sink_perf(struct coresight_device *csdev, void *data) } static int tmc_enable_etr_sink(struct coresight_device *csdev, - u32 mode, void *data) + enum cs_mode mode, void *data) { switch (mode) { case CS_MODE_SYSFS: return tmc_enable_etr_sink_sysfs(csdev); case CS_MODE_PERF: return tmc_enable_etr_sink_perf(csdev, data); + default: + return -EINVAL; } - - /* We shouldn't be here */ - return -EINVAL; } static int tmc_disable_etr_sink(struct coresight_device *csdev) diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index 9479a5e8c672..f4854af0431e 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -42,8 +42,8 @@ static void __tpdm_enable(struct tpdm_drvdata *drvdata) CS_LOCK(drvdata->base); } -static int tpdm_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int tpdm_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 34d37abd2c8d..b0179f761c98 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -69,7 +69,8 @@ static void tpiu_enable_hw(struct csdev_access *csa) CS_LOCK(csa->base); } -static int tpiu_enable(struct coresight_device *csdev, u32 mode, void *__unused) +static int tpiu_enable(struct coresight_device *csdev, enum cs_mode mode, + void *__unused) { tpiu_enable_hw(&csdev->access); atomic_inc(csdev->refcnt); diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index 1fc4fd79a1c6..5406e338c280 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -1005,7 +1005,8 @@ static int __arm_trbe_enable(struct trbe_buf *buf, return ret; } -static int arm_trbe_enable(struct coresight_device *csdev, u32 mode, void *data) +static int arm_trbe_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { struct trbe_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); struct trbe_cpudata *cpudata = dev_get_drvdata(&csdev->dev); diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c index b317342c7ce5..a2ced0b3c3cd 100644 --- a/drivers/hwtracing/coresight/ultrasoc-smb.c +++ b/drivers/hwtracing/coresight/ultrasoc-smb.c @@ -256,7 +256,8 @@ static int smb_enable_perf(struct coresight_device *csdev, void *data) return 0; } -static int smb_enable(struct coresight_device *csdev, u32 mode, void *data) +static int smb_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { struct smb_drv_data *drvdata = dev_get_drvdata(csdev->dev.parent); int ret = 0; diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.h b/drivers/hwtracing/coresight/ultrasoc-smb.h index 7dfbe42e37a0..d2e14e8d2c8a 100644 --- a/drivers/hwtracing/coresight/ultrasoc-smb.h +++ b/drivers/hwtracing/coresight/ultrasoc-smb.h @@ -119,7 +119,7 @@ struct smb_drv_data { struct mutex mutex; bool reading; pid_t pid; - u32 mode; + enum cs_mode mode; }; #endif diff --git a/include/linux/coresight.h b/include/linux/coresight.h index f19a47b9bb5a..1f878e8ed8c4 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -272,6 +272,12 @@ static struct coresight_dev_list (var) = { \ #define to_coresight_device(d) container_of(d, struct coresight_device, dev) +enum cs_mode { + CS_MODE_DISABLED, + CS_MODE_SYSFS, + CS_MODE_PERF, +}; + #define source_ops(csdev) csdev->ops->source_ops #define sink_ops(csdev) csdev->ops->sink_ops #define link_ops(csdev) csdev->ops->link_ops @@ -288,7 +294,8 @@ static struct coresight_dev_list (var) = { \ * @update_buffer: update buffer pointers after a trace session. */ struct coresight_ops_sink { - int (*enable)(struct coresight_device *csdev, u32 mode, void *data); + int (*enable)(struct coresight_device *csdev, enum cs_mode mode, + void *data); int (*disable)(struct coresight_device *csdev); void *(*alloc_buffer)(struct coresight_device *csdev, struct perf_event *event, void **pages, @@ -320,8 +327,8 @@ struct coresight_ops_link { */ struct coresight_ops_source { int (*cpu_id)(struct coresight_device *csdev); - int (*enable)(struct coresight_device *csdev, - struct perf_event *event, u32 mode); + int (*enable)(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode); void (*disable)(struct coresight_device *csdev, struct perf_event *event); };