From nobody Fri Dec 19 11:30:20 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id ADC8022AE76 for ; Fri, 11 Apr 2025 16:43:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744389838; cv=none; b=DOv9OjFN1/gCJpcvTIF3s9SgTb1DbYZvFgvFevzYvbiL0VQFBwQLw+badurMsdRtHVpNrw1GUmoUcsqZLGPZ7lUQGLsF9gkB7R3hAmHBqgdsY9tTPTqrfcNETndJlKpaHplXDeW9wQ3FmFMCyVILAp1hjTCXkMFaBd8tTB9UdU4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744389838; c=relaxed/simple; bh=lcYy2V6aZJgnOMUPI6+8Jw6WsfVcI0u4Av3tmJnycec=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=iGd0lwrjYl39B0NYHPlVDyWILZXVox+VgRbE0aKLsLS3GAxYlLZTeIEOoJ6XeT8G4GQCiwN0ID6gp2mwAfdLAkSVHbTMDH+kyRLLEY+mNTBGGiWfIovux+c8HkdlHWZPH/CJCmLWMZwQxys2eTPuEp2LSlEvFeFTj7NiRAyjKbs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com 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 E6282204C; Fri, 11 Apr 2025 09:43:55 -0700 (PDT) Received: from merodach.members.linode.com (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A3B213F694; Fri, 11 Apr 2025 09:43:52 -0700 (PDT) From: James Morse To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: Reinette Chatre , Thomas Gleixner , Ingo Molnar , Borislav Petkov , H Peter Anvin , Babu Moger , James Morse , shameerali.kolothum.thodi@huawei.com, D Scott Phillips OS , carl@os.amperecomputing.com, lcherian@marvell.com, bobo.shaobowang@huawei.com, tan.shaopeng@fujitsu.com, baolin.wang@linux.alibaba.com, Jamie Iles , Xin Hao , peternewman@google.com, dfustini@baylibre.com, amitsinght@marvell.com, David Hildenbrand , Rex Nie , Dave Martin , Koba Ko , Shanker Donthineni , fenghuay@nvidia.com, Dave Martin , Shaopeng Tan , Babu Moger , Tony Luck Subject: [PATCH v8 12/21] x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl Date: Fri, 11 Apr 2025 16:42:20 +0000 Message-Id: <20250411164229.23413-13-james.morse@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20250411164229.23413-1-james.morse@arm.com> References: <20250411164229.23413-1-james.morse@arm.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 Content-Type: text/plain; charset="utf-8" Once the filesystem parts of resctrl move to fs/resctrl, it cannot rely on definitions in x86's internal.h. Move definitions in internal.h that need to be shared between the filesystem and architecture code to header files that fs/resctrl can include. Doing this separately means the filesystem code only moves between files of the same name, instead of having these changes mixed in too. Co-developed-by: Dave Martin Signed-off-by: Dave Martin Signed-off-by: James Morse Tested-by: Carl Worth # arm64 Tested-by: Shaopeng Tan Tested-by: Peter Newman Tested-by: Amit Singh Tomar # arm64 Tested-by: Shanker Donthineni # arm64 Tested-by: Babu Moger Reviewed-by: Shaopeng Tan Reviewed-by: Tony Luck Reviewed-by: Fenghua Yu Reviewed-by: Reinette Chatre --- Changes since v6: * Moved resctrl_arch_set_cdp_enabled() to rdtgroup.c instead of core.c Changes since v3: * Changed the number of hyphens at the end of the commit message. Changes since v2: * Dropped the rfflags and some other defines from being moved. Changes since v1: * Revert apparently unintentional duplication of a couple of variable declarations in . No functional change. --- arch/x86/include/asm/resctrl.h | 3 +++ arch/x86/kernel/cpu/resctrl/internal.h | 9 --------- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 5 +++++ include/linux/resctrl_types.h | 3 +++ 4 files changed, 11 insertions(+), 9 deletions(-) diff --git a/arch/x86/include/asm/resctrl.h b/arch/x86/include/asm/resctrl.h index 7a39728b0743..6eb7d5c94c7a 100644 --- a/arch/x86/include/asm/resctrl.h +++ b/arch/x86/include/asm/resctrl.h @@ -210,6 +210,9 @@ int resctrl_arch_measure_l2_residency(void *_plr); int resctrl_arch_measure_l3_residency(void *_plr); void resctrl_cpu_detect(struct cpuinfo_x86 *c); =20 +bool resctrl_arch_get_cdp_enabled(enum resctrl_res_level l); +int resctrl_arch_set_cdp_enabled(enum resctrl_res_level l, bool enable); + #else =20 static inline void resctrl_arch_sched_in(struct task_struct *tsk) {} diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/r= esctrl/internal.h index 365d5697a6ae..866b9fec5a11 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -16,8 +16,6 @@ #define CQM_LIMBOCHECK_INTERVAL 1000 =20 #define MBM_CNTR_WIDTH_BASE 24 -#define MBM_OVERFLOW_INTERVAL 1000 -#define MAX_MBA_BW 100u #define MBA_IS_LINEAR 0x4 #define MBM_CNTR_WIDTH_OFFSET_AMD 20 =20 @@ -410,13 +408,6 @@ extern struct rdtgroup rdtgroup_default; extern struct dentry *debugfs_resctrl; extern enum resctrl_event_id mba_mbps_default_event; =20 -static inline bool resctrl_arch_get_cdp_enabled(enum resctrl_res_level l) -{ - return rdt_resources_all[l].cdp_enabled; -} - -int resctrl_arch_set_cdp_enabled(enum resctrl_res_level l, bool enable); - void arch_mon_domain_online(struct rdt_resource *r, struct rdt_mon_domain = *d); =20 /* CPUID.(EAX=3D10H, ECX=3DResID=3D1).EAX */ diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/r= esctrl/rdtgroup.c index 23fd92cc0c56..25dc94cb8e88 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -2536,6 +2536,11 @@ int resctrl_arch_set_cdp_enabled(enum resctrl_res_le= vel l, bool enable) return 0; } =20 +bool resctrl_arch_get_cdp_enabled(enum resctrl_res_level l) +{ + return rdt_resources_all[l].cdp_enabled; +} + /* * We don't allow rdtgroup directories to be created anywhere * except the root directory. Thus when looking for the rdtgroup diff --git a/include/linux/resctrl_types.h b/include/linux/resctrl_types.h index 654323066174..a7faf2cd5406 100644 --- a/include/linux/resctrl_types.h +++ b/include/linux/resctrl_types.h @@ -7,6 +7,9 @@ #ifndef __LINUX_RESCTRL_TYPES_H #define __LINUX_RESCTRL_TYPES_H =20 +#define MAX_MBA_BW 100u +#define MBM_OVERFLOW_INTERVAL 1000 + /* Reads to Local DRAM Memory */ #define READS_TO_LOCAL_MEM BIT(0) =20 --=20 2.20.1