From nobody Mon Feb 9 12:23:50 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id D373A1E9B3E for ; Fri, 7 Feb 2025 18:21:08 +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=1738952480; cv=none; b=iGIfXqQkHM4bkVz/lJnh07eM7HwAumiwo/sRSyin3cIpzq8v3G8OHys87K+erGce4VMvwBxJCSiOmGKZOYDCDKF3zJZxCKkvBLrStzU2mMSy+XSNHyyHODOFfil0wQKNhBhdWZcgQ+UfT2dTfwUjuqzxnbHoGmnCYnz6R88Ec/g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738952480; c=relaxed/simple; bh=onSZ9hJ9+HB1F/Wf19OQLN9O2NuI9656AEqEjkY8uL0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=U+gNgVHmafRcGMxhg7Mc25tv9eHE0lxr9XcaZ/cszz66nnarhw15T1n/7y71A+aR1axgGUlk1cB33RXIOP/fyNMQ72S+p7ON5Og2yZQfjCHCr6vnWDM+/OM+gW6YibBj/jwzxVZO0AKndM3gLUMNQ8/Uo6pwUEBxgLItW1Qrr+Q= 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 D175E1FC4; Fri, 7 Feb 2025 10:21:30 -0800 (PST) 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 996973F63F; Fri, 7 Feb 2025 10:21:04 -0800 (PST) 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 , Dave Martin , Shaopeng Tan , Tony Luck Subject: [PATCH v6 41/42] x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl Date: Fri, 7 Feb 2025 18:18:22 +0000 Message-Id: <20250207181823.6378-42-james.morse@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20250207181823.6378-1-james.morse@arm.com> References: <20250207181823.6378-1-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 Reviewed-by: Shaopeng Tan Reviewed-by: Tony Luck --- 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/core.c | 5 +++++ arch/x86/kernel/cpu/resctrl/internal.h | 9 --------- 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/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 6303c0ee0ae2..f2cd7ba39fcc 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -288,6 +288,11 @@ static void rdt_get_cdp_l2_config(void) rdt_get_cdp_config(RDT_RESOURCE_L2); } =20 +bool resctrl_arch_get_cdp_enabled(enum resctrl_res_level l) +{ + return rdt_resources_all[l].cdp_enabled; +} + static void mba_wrmsr_amd(struct msr_param *m) { struct rdt_hw_ctrl_domain *hw_dom =3D resctrl_to_arch_ctrl_dom(m->dom); diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/r= esctrl/internal.h index ee50b7375717..a569e31d75f6 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 @@ -403,13 +401,6 @@ 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/include/linux/resctrl_types.h b/include/linux/resctrl_types.h index 70226f5ab3e3..b84a6e0834a7 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 2.39.2