From nobody Tue Oct 7 16:38:16 2025 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AF8161BF37; Tue, 8 Jul 2025 15:15:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987741; cv=none; b=M9agNKZ7LHgdX3krTXeQnmBrDgUywwLD2P9GNiz+z5Zk8rB0vcSAnrll9sShrveM6bnl8Cu7DxSiUoW3QGsdrLRlvE0oh+JQ26iy4jV/MBDj7kzpiRurszdc/v+xZqdr6bhdOAdscjn4pfEuA7wqf0aermgvrckhUJGnTG6GvKs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987741; c=relaxed/simple; bh=kWGQ8niWIt154hC3EbK6P5yuNnrD5aDaG+k8IKy+pnQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tET21jMmW596I1g7v49VT3t4j9c6+VdishkPMcoMjGMV3PnAZ/i5lBNNEIGX5M6585arioPkGmw/y16f96tW6uPl1wC1QlI0Y360G04X7Dw0hyNMnvNk/q6rb2AM+IjvJog3yDEw0xMI1//gLH/XRQ1iV4IbAmI7KfykN3L3xz8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bc4NB4r7hz6D8gg; Tue, 8 Jul 2025 23:12:26 +0800 (CST) Received: from frapeml500003.china.huawei.com (unknown [7.182.85.28]) by mail.maildlp.com (Postfix) with ESMTPS id 849261402A5; Tue, 8 Jul 2025 23:15:36 +0800 (CST) Received: from a2303103017.china.huawei.com (10.203.177.99) by frapeml500003.china.huawei.com (7.182.85.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 8 Jul 2025 17:15:35 +0200 From: Alireza Sanaee To: , CC: , , , , , , , , , , , , , Subject: [PATCH v2 1/5] of: add infra for finding CPU id from phandle Date: Tue, 8 Jul 2025 16:14:58 +0100 Message-ID: <20250708151502.561-2-alireza.sanaee@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250708151502.561-1-alireza.sanaee@huawei.com> References: <20250708151502.561-1-alireza.sanaee@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: lhrpeml500010.china.huawei.com (7.191.174.240) To frapeml500003.china.huawei.com (7.182.85.28) Content-Type: text/plain; charset="utf-8" Get CPU id from phandle. Many drivers get do this by getting hold of CPU node first through a phandle and then find the CPU ID using the relevant function. This commit encapsulates cpu node finding and improves readability. The API interface requires two parameters, 1) node, 2) pointer to pointer of CPU node, 3) cpu node index. API sets the pointer to the CPU node and allows the driver to play with the CPU itself, for logging purposes for instance. Signed-off-by: Alireza Sanaee --- drivers/of/cpu.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/linux/of.h | 9 +++++++++ 2 files changed, 49 insertions(+) diff --git a/drivers/of/cpu.c b/drivers/of/cpu.c index 5214dc3d05ae..494d47470f94 100644 --- a/drivers/of/cpu.c +++ b/drivers/of/cpu.c @@ -173,6 +173,46 @@ int of_cpu_node_to_id(struct device_node *cpu_node) } EXPORT_SYMBOL(of_cpu_node_to_id); =20 +/** + * of_cpu_phandle_to_id: Get the logical CPU number for a given device_node + * + * @node: Pointer to the device_node containing CPU phandle. + * @cpu_np: Pointer to the device_node for CPU. + * @cpu_idx: The index of the CPU in the list of CPUs. + * + * Return: The logical CPU number of the given CPU device_node or -ENODEV = if + * the CPU is not found, or if the node is NULL, it returns -1. On success, + * cpu_np will always point to the retrieved CPU device_node with refcount + * incremented, use of_node_put() on it when done. + */ +int of_cpu_phandle_to_id(const struct device_node *node, + struct device_node **cpu_np, + uint8_t cpu_idx) +{ + struct device_node *local_cpu_node; + int cpu; + + if (!node) + return -1; + + local_cpu_node =3D of_parse_phandle(node, "cpu", 0); + if (!local_cpu_node) + local_cpu_node =3D of_parse_phandle(node, "cpus", cpu_idx); + + if (!local_cpu_node) + return -ENODEV; + + cpu =3D of_cpu_node_to_id(local_cpu_node); + + if (cpu_np) + *cpu_np =3D local_cpu_node; + else + of_node_put(local_cpu_node); + + return cpu; +} +EXPORT_SYMBOL(of_cpu_phandle_to_id); + /** * of_get_cpu_state_node - Get CPU's idle state node at the given index * diff --git a/include/linux/of.h b/include/linux/of.h index a62154aeda1b..717e55065d99 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -365,6 +365,8 @@ extern const void *of_get_property(const struct device_= node *node, extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); extern struct device_node *of_cpu_device_node_get(int cpu); extern int of_cpu_node_to_id(struct device_node *np); +extern int of_cpu_phandle_to_id(const struct device_node *np, + struct device_node **cpu_np, uint8_t cpu_idx); extern struct device_node *of_get_next_cpu_node(struct device_node *prev); extern struct device_node *of_get_cpu_state_node(const struct device_node = *cpu_node, int index); @@ -680,6 +682,13 @@ static inline int of_cpu_node_to_id(struct device_node= *np) return -ENODEV; } =20 +static inline int of_cpu_phandle_to_id(const struct device_node *np, + struct device_node **cpu_np, + uint8_t cpu_idx) +{ + return -ENODEV; +} + static inline struct device_node *of_get_next_cpu_node(struct device_node = *prev) { return NULL; --=20 2.43.0 From nobody Tue Oct 7 16:38:16 2025 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9CC32E0916; Tue, 8 Jul 2025 15:16:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987771; cv=none; b=vAa3ZHFd19jxOkqzyY/4pFzaYLw31Yg97aBpH/iTaexluI7Lpm5e1TPkSNCG/G4U3Hm9/HFfSPS3gDuBKe/RNPc0wL792jvwPW235lkKt0dcADmR4moxjh09X/jUnXfjl3OP5ddNy3vt8d6eWU+dIHay/A+zO685YDiQ9OzA5Ck= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987771; c=relaxed/simple; bh=fPkbhYkP8oPCC3wrim1HbW/Hjnd8KZr7Pyf40Q9rta4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZthEBq04gVItnQs+Ge86YxNjSrJvbdjICOZ+T17/SO+9dZsU00K0ZL2j848ZAlBNMUU+Z/xBigRYjX+mOu3RbcKrskCsmEmFlRtQUcPFssjYAIpAkEu22F91uyKLH4+FKMlN1cVNvlnhUUxoJbl97qg/VYgo3nAMVYI4/Z4eYrk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bc4Np0DFNz6D8gp; Tue, 8 Jul 2025 23:12:58 +0800 (CST) Received: from frapeml500003.china.huawei.com (unknown [7.182.85.28]) by mail.maildlp.com (Postfix) with ESMTPS id DA5381402A5; Tue, 8 Jul 2025 23:16:07 +0800 (CST) Received: from a2303103017.china.huawei.com (10.203.177.99) by frapeml500003.china.huawei.com (7.182.85.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 8 Jul 2025 17:16:07 +0200 From: Alireza Sanaee To: , CC: , , , , , , , , , , , , , Subject: [PATCH v2 2/5] arch_topology: update CPU map to use the new API Date: Tue, 8 Jul 2025 16:14:59 +0100 Message-ID: <20250708151502.561-3-alireza.sanaee@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250708151502.561-1-alireza.sanaee@huawei.com> References: <20250708151502.561-1-alireza.sanaee@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: lhrpeml500010.china.huawei.com (7.191.174.240) To frapeml500003.china.huawei.com (7.182.85.28) Content-Type: text/plain; charset="utf-8" Cleans up the cpu-map generation using the created API. Signed-off-by: Alireza Sanaee --- drivers/base/arch_topology.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 1037169abb45..ccc73bfae90d 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -473,19 +473,19 @@ static unsigned int max_smt_thread_num =3D 1; */ static int __init get_cpu_for_node(struct device_node *node) { + struct device_node *cpu_node; int cpu; - struct device_node *cpu_node __free(device_node) =3D - of_parse_phandle(node, "cpu", 0); =20 - if (!cpu_node) - return -1; - - cpu =3D of_cpu_node_to_id(cpu_node); - if (cpu >=3D 0) + cpu =3D of_cpu_phandle_to_id(node, &cpu_node, 0); + if (cpu >=3D 0) { topology_parse_cpu_capacity(cpu_node, cpu); - else + of_node_put(cpu_node); + } else if (cpu =3D=3D -ENODEV) { pr_info("CPU node for %pOF exist but the possible cpu range is :%*pbl\n", cpu_node, cpumask_pr_args(cpu_possible_mask)); + of_node_put(cpu_node); + } else + return -1; =20 return cpu; } --=20 2.43.0 From nobody Tue Oct 7 16:38:16 2025 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1DB602E0B6A; Tue, 8 Jul 2025 15:16:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987803; cv=none; b=F59ESURWWJPPYOtJ5mKE62gZzEp5fKtkT9201HIkg7nO7X83kdIVAScMudbseCZ1kfqKRBpa4N/neF0OMotgt9QV1xDcO+G4zi2i4N+9mwWjarutEDmgUrMKQq8gTRBd8o+uiQ4G8SLacXZYwWQCnygh56Pu+eYp/CYLlP/Vyx0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987803; c=relaxed/simple; bh=AzmZdqYiO3CWonmWoyNc9NKpelTtl9CAsRIlzdipG20=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LiL4XacQa7AS615VxMbVN/pcY5CQqE1Du0AFxkFqjhkXvKYTj8RMJXHsU5752DQRCeFSwAYOQsr29DVgM87ojtD071ExsfNzMy2pYEey3u7A0RNAdGsHRaef8AFHdoOlod24qUmVsr+3iSJ3cQLw2bMf+DS7rG/dVrbHKWEC0+Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bc4Rp74lmz6GFHD; Tue, 8 Jul 2025 23:15:34 +0800 (CST) Received: from frapeml500003.china.huawei.com (unknown [7.182.85.28]) by mail.maildlp.com (Postfix) with ESMTPS id 1ED891402A5; Tue, 8 Jul 2025 23:16:39 +0800 (CST) Received: from a2303103017.china.huawei.com (10.203.177.99) by frapeml500003.china.huawei.com (7.182.85.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 8 Jul 2025 17:16:38 +0200 From: Alireza Sanaee To: , CC: , , , , , , , , , , , , , Subject: [PATCH v2 3/5] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id Date: Tue, 8 Jul 2025 16:15:00 +0100 Message-ID: <20250708151502.561-4-alireza.sanaee@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250708151502.561-1-alireza.sanaee@huawei.com> References: <20250708151502.561-1-alireza.sanaee@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: lhrpeml500010.china.huawei.com (7.191.174.240) To frapeml500003.china.huawei.com (7.182.85.28) Content-Type: text/plain; charset="utf-8" Use the newly created API to grab CPU id. Signed-off-by: Alireza Sanaee Reviewed-by: Mike Leach --- .../hwtracing/coresight/coresight-cti-platform.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers= /hwtracing/coresight/coresight-cti-platform.c index d0ae10bf6128..e1dc559d54aa 100644 --- a/drivers/hwtracing/coresight/coresight-cti-platform.c +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c @@ -41,20 +41,8 @@ */ static int of_cti_get_cpu_at_node(const struct device_node *node) { - int cpu; - struct device_node *dn; + int cpu =3D of_cpu_phandle_to_id(node, NULL, 0); =20 - if (node =3D=3D NULL) - return -1; - - dn =3D of_parse_phandle(node, "cpu", 0); - /* CTI affinity defaults to no cpu */ - if (!dn) - return -1; - cpu =3D of_cpu_node_to_id(dn); - of_node_put(dn); - - /* No Affinity if no cpu nodes are found */ return (cpu < 0) ? -1 : cpu; } =20 --=20 2.43.0 From nobody Tue Oct 7 16:38:16 2025 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E7322DECA8; Tue, 8 Jul 2025 15:17:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987834; cv=none; b=pZ+InahPAoIzOAPq5xjpwRlaJLunU+ZQujvxAaJ95QLEHUhK6dJZSo1lv8eQicKM4TLQc8EgaCAyT+RC9tY5VzOJSf4Ze5bco0mIkPRe4PMguRF3p1qsLpXSqgZ4p1GdKxHgMMxNHgMwe2ZNN0IoqqkO9tkXLdgm9WEp6Sjtf1c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987834; c=relaxed/simple; bh=AznY2zb6vloAg+re3GKgRRgegg6t9h4ttc8jZm+nJb0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZXY8lVweT4tb1+rv9pfEYrCpq/jEmPn7lUfep9hQmU6VCLrGJ3IwctTQGwmbqV5D4d+AxrofhqtzZNvYTiOsqa8lE/LObgBMObucOua+hvdh8RvxA5P+Tt5dtsTjvd8oqhuiFVjM9KkbIBCXrvJ58xvk4RhcF+KDbZQqJKJTDi0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bc4SQ47Mtz6GF8d; Tue, 8 Jul 2025 23:16:06 +0800 (CST) Received: from frapeml500003.china.huawei.com (unknown [7.182.85.28]) by mail.maildlp.com (Postfix) with ESMTPS id AE9071402A5; Tue, 8 Jul 2025 23:17:10 +0800 (CST) Received: from a2303103017.china.huawei.com (10.203.177.99) by frapeml500003.china.huawei.com (7.182.85.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 8 Jul 2025 17:17:09 +0200 From: Alireza Sanaee To: , CC: , , , , , , , , , , , , , Subject: [PATCH v2 4/5] coresight: Use of_cpu_phandle_to_id for grabbing CPU id Date: Tue, 8 Jul 2025 16:15:01 +0100 Message-ID: <20250708151502.561-5-alireza.sanaee@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250708151502.561-1-alireza.sanaee@huawei.com> References: <20250708151502.561-1-alireza.sanaee@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: lhrpeml500010.china.huawei.com (7.191.174.240) To frapeml500003.china.huawei.com (7.182.85.28) Content-Type: text/plain; charset="utf-8" Use the newly created API to grab CPU id. Signed-off-by: Alireza Sanaee Reviewed-by: Jonathan Cameron --- drivers/hwtracing/coresight/coresight-platform.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwt= racing/coresight/coresight-platform.c index 0db64c5f4995..95d46ea08936 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -167,20 +167,7 @@ of_coresight_get_output_ports_node(const struct device= _node *node) =20 static int of_coresight_get_cpu(struct device *dev) { - int cpu; - struct device_node *dn; - - if (!dev->of_node) - return -ENODEV; - - dn =3D of_parse_phandle(dev->of_node, "cpu", 0); - if (!dn) - return -ENODEV; - - cpu =3D of_cpu_node_to_id(dn); - of_node_put(dn); - - return cpu; + return of_cpu_phandle_to_id(dev->of_node, NULL, 0); } =20 /* --=20 2.43.0 From nobody Tue Oct 7 16:38:16 2025 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E41A42E06FD; Tue, 8 Jul 2025 15:17:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987865; cv=none; b=SG58Mq+m6Y9L/x03dAAsi3DR8vRRFOSlw4FAlljK5oMLO5a8T4V/AH2LaAIRQpE2e1jhtv9Xyi9vDNzv340EboHcFvdlFQIV2erdu2pzjKvR7dmlbES336TAfX4ZjvUmWsBa6XIG6PjVp4Fr7t4ANxcck83BDkjaHmJ4Xglkey0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751987865; c=relaxed/simple; bh=5Ll5SzLbMD5h6Fr5OnCwNbeQhZoJ6/RxszGBv5T4Je0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BWjZxbjMAqc3JfyFk08s63cznR7O8mlhY3rgiJrrS46tU3JLcQ15tYTVy6jBLVTzBqy3miHpWg7bhcPtKbqM3IjrTh/JmJDnMqA6wMl/9/cv9uSWkG+PWHZWkHhk+u7gzHHS8mTu4DS907+QoowtLG3oIdpQ67JjwJmaVQzuwvc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bc4TN15Fgz6GB73; Tue, 8 Jul 2025 23:16:56 +0800 (CST) Received: from frapeml500003.china.huawei.com (unknown [7.182.85.28]) by mail.maildlp.com (Postfix) with ESMTPS id D24C01404D8; Tue, 8 Jul 2025 23:17:41 +0800 (CST) Received: from a2303103017.china.huawei.com (10.203.177.99) by frapeml500003.china.huawei.com (7.182.85.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 8 Jul 2025 17:17:41 +0200 From: Alireza Sanaee To: , CC: , , , , , , , , , , , , , Subject: [PATCH v2 5/5] perf/arm-dsu: refactor cpu id retrieval via new API of_cpu_phandle_to_id Date: Tue, 8 Jul 2025 16:15:02 +0100 Message-ID: <20250708151502.561-6-alireza.sanaee@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250708151502.561-1-alireza.sanaee@huawei.com> References: <20250708151502.561-1-alireza.sanaee@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: lhrpeml500010.china.huawei.com (7.191.174.240) To frapeml500003.china.huawei.com (7.182.85.28) Content-Type: text/plain; charset="utf-8" Update arm-dsu to use the new API, where both "cpus" and "cpu" properties are supported. Signed-off-by: Alireza Sanaee --- drivers/perf/arm_dsu_pmu.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c index cb4fb59fe04b..1014b92c0fd2 100644 --- a/drivers/perf/arm_dsu_pmu.c +++ b/drivers/perf/arm_dsu_pmu.c @@ -591,17 +591,13 @@ static struct dsu_pmu *dsu_pmu_alloc(struct platform_= device *pdev) static int dsu_pmu_dt_get_cpus(struct device *dev, cpumask_t *mask) { int i =3D 0, n, cpu; - struct device_node *cpu_node; =20 n =3D of_count_phandle_with_args(dev->of_node, "cpus", NULL); if (n <=3D 0) return -ENODEV; + for (; i < n; i++) { - cpu_node =3D of_parse_phandle(dev->of_node, "cpus", i); - if (!cpu_node) - break; - cpu =3D of_cpu_node_to_id(cpu_node); - of_node_put(cpu_node); + cpu =3D of_cpu_phandle_to_id(dev->of_node, NULL, i); /* * We have to ignore the failures here and continue scanning * the list to handle cases where the nr_cpus could be capped --=20 2.43.0