From nobody Thu Apr 2 00:13:28 2026 Received: from canpmsgout02.his.huawei.com (canpmsgout02.his.huawei.com [113.46.200.217]) (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 61FC83AB298; Wed, 1 Apr 2026 08:16:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.217 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775031420; cv=none; b=h83O+PJm0KTklByPJ5hCyrBGTDzzcM+aKxZX5qBTFNfQxDC5VR6g1gWvtwwJUZAFY16waV5OH+IGl8MJPBM0RBjQE0sWJ1z0jhN4V0Dpsfh3AbYtLGn8k1HZiJ9/FKmP0qYdHPlGMMl5izjNBo2rRzPebJZGaxDtPFSOhlZ+Kek= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775031420; c=relaxed/simple; bh=425fWiSrilzQ1wl2CPxfhnZrrHqEHVxKbyTM+Z2Qq/M=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WbU7Sh1NVtcGO0Ixf5TczMq4I4ouK3I9tQ6cmXYB9em4UQKJCC/MC07zj3vThXzaBlsHfa//NZTO9PhbXGBtHgdJkKsEJhRmVKZvbhz8G7hVVz2v9RxdNAZKN67uxPddQ50FaiWh4ZqOJBoCrOlfxmQrHIvCafkgoekhrH+EScs= 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; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=gAhZczIG; arc=none smtp.client-ip=113.46.200.217 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="gAhZczIG" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=ANvjKw/V+x/xgnK84bsEKs2slfuc72S2wtUZ6Ltd7AU=; b=gAhZczIG65dC2yh+2aADvwVAp++19t5FyGF4ZzbeSLiKAirv37HFkiFuy/A1lWBlr5MpsM4Ut Lnhv1/GDpeZI1w99rpED8gfQlunCOXOTiUjR1yp3rBy23eO6v/Ttq6ZYJsfo+fm/1xgWotDODEb YV0jLZY6lrTP0qpYzZ1KoG4= Received: from mail.maildlp.com (unknown [172.19.162.140]) by canpmsgout02.his.huawei.com (SkyGuard) with ESMTPS id 4flyNW224WzcZxn; Wed, 1 Apr 2026 16:10:51 +0800 (CST) Received: from kwepemk500009.china.huawei.com (unknown [7.202.194.94]) by mail.maildlp.com (Postfix) with ESMTPS id BC54C203B2; Wed, 1 Apr 2026 16:16:55 +0800 (CST) Received: from localhost.localdomain (10.50.163.32) by kwepemk500009.china.huawei.com (7.202.194.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 1 Apr 2026 16:16:53 +0800 From: Chengwen Feng To: Bjorn Helgaas , Catalin Marinas , Will Deacon , "Rafael J . Wysocki" CC: Jonathan Corbet , WANG Xuerui , Thomas Gleixner , Dave Hansen , "H . Peter Anvin" , Juergen Gross , Boris Ostrovsky , Len Brown , Sunil V L , Mark Rutland , Jonathan Cameron , Kees Cook , Yanteng Si , Sean Christopherson , Kai Huang , Tom Lendacky , Thomas Huth , Thorsten Blum , Kevin Loughlin , Zheyun Shen , Peter Zijlstra , Pawan Gupta , Xin Li , "Ahmed S . Darwish" , Sohil Mehta , Ilkka Koskinen , Robin Murphy , James Clark , Besar Wicaksono , Ma Ke , Wei Huang , Andy Gospodarek , Somnath Kotur , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH RESEND v10 5/8] ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h Date: Wed, 1 Apr 2026 16:16:37 +0800 Message-ID: <20260401081640.26875-6-fengchengwen@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260401081640.26875-1-fengchengwen@huawei.com> References: <20260401081640.26875-1-fengchengwen@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: kwepems200001.china.huawei.com (7.221.188.67) To kwepemk500009.china.huawei.com (7.202.194.94) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Centralize acpi_get_cpu_uid() in include/linux/acpi.h (global scope) and remove arch-specific declarations from arm64/loongarch/riscv/x86 asm/acpi.h. This unifies the interface across architectures and simplifies maintenance by eliminating duplicate prototypes. Cc: stable@vger.kernel.org Signed-off-by: Chengwen Feng Reviewed-by: Jonathan Cameron --- arch/arm64/include/asm/acpi.h | 1 - arch/loongarch/include/asm/acpi.h | 1 - arch/riscv/include/asm/acpi.h | 1 - arch/x86/include/asm/acpi.h | 2 -- include/linux/acpi.h | 11 +++++++++++ 5 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 2219a3301e72..bdb0ecf95b5c 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -118,7 +118,6 @@ static inline u32 get_acpi_id_for_cpu(unsigned int cpu) { return acpi_cpu_get_madt_gicc(cpu)->uid; } -int acpi_get_cpu_uid(unsigned int cpu, u32 *uid); int get_cpu_for_acpi_id(u32 uid); =20 static inline void arch_fix_phys_package_id(int num, u32 slot) { } diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm= /acpi.h index 8bb101b4557e..7376840fa9f7 100644 --- a/arch/loongarch/include/asm/acpi.h +++ b/arch/loongarch/include/asm/acpi.h @@ -44,7 +44,6 @@ static inline u32 get_acpi_id_for_cpu(unsigned int cpu) { return acpi_core_pic[cpu_logical_map(cpu)].processor_id; } -int acpi_get_cpu_uid(unsigned int cpu, u32 *uid); =20 #endif /* !CONFIG_ACPI */ =20 diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h index f3520cc85af3..6e13695120bc 100644 --- a/arch/riscv/include/asm/acpi.h +++ b/arch/riscv/include/asm/acpi.h @@ -65,7 +65,6 @@ static inline u32 get_acpi_id_for_cpu(int cpu) { return acpi_cpu_get_madt_rintc(cpu)->uid; } -int acpi_get_cpu_uid(unsigned int cpu, u32 *uid); =20 int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const char **isa); diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index 92b5c27c4fea..a03aa6f999d1 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -157,8 +157,6 @@ static inline bool acpi_has_cpu_in_madt(void) return !!acpi_lapic; } =20 -int acpi_get_cpu_uid(unsigned int cpu, u32 *uid); - #define ACPI_HAVE_ARCH_SET_ROOT_POINTER static __always_inline void acpi_arch_set_root_pointer(u64 addr) { diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 4d2f0bed7a06..74a73f0e5944 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -324,6 +324,17 @@ int acpi_unmap_cpu(int cpu); =20 acpi_handle acpi_get_processor_handle(int cpu); =20 +/** + * acpi_get_cpu_uid() - Get ACPI Processor UID of from MADT table + * @cpu: Logical CPU number (0-based) + * @uid: Pointer to store ACPI Processor UID + * + * Return: 0 on success (ACPI Processor ID stored in *uid); + * -EINVAL if CPU number is invalid or out of range; + * -ENODEV if ACPI Processor UID for the CPU is not found. + */ +int acpi_get_cpu_uid(unsigned int cpu, u32 *uid); + #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr); #endif --=20 2.17.1