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Message-Id: <20240614150033.10454-38-james.morse@arm.com>
Date: Fri, 14 Jun 2024 15:00:32 +0000
From: James Morse <james.morse@....com>
To: x86@...nel.org,
linux-kernel@...r.kernel.org
Cc: Fenghua Yu <fenghua.yu@...el.com>,
Reinette Chatre <reinette.chatre@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>,
H Peter Anvin <hpa@...or.com>,
Babu Moger <Babu.Moger@....com>,
James Morse <james.morse@....com>,
shameerali.kolothum.thodi@...wei.com,
D Scott Phillips OS <scott@...amperecomputing.com>,
carl@...amperecomputing.com,
lcherian@...vell.com,
bobo.shaobowang@...wei.com,
tan.shaopeng@...itsu.com,
baolin.wang@...ux.alibaba.com,
Jamie Iles <quic_jiles@...cinc.com>,
Xin Hao <xhao@...ux.alibaba.com>,
peternewman@...gle.com,
dfustini@...libre.com,
amitsinght@...vell.com,
David Hildenbrand <david@...hat.com>,
Rex Nie <rex.nie@...uarmicro.com>,
Dave Martin <dave.martin@....com>,
Dave Martin <Dave.Martin@....com>,
Shaopeng Tan <tan.shaopeng@...fujitsu.com>
Subject: [PATCH v3 37/38] x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl
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 <Dave.Martin@....com>
Signed-off-by: Dave Martin <Dave.Martin@....com>
Signed-off-by: James Morse <james.morse@....com>
Tested-by: Peter Newman <peternewman@...gle.com>
Tested-by: Shaopeng Tan <tan.shaopeng@...fujitsu.com>
----
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 <linux/resctrl.h>.
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 491342f56811..746431c66fc4 100644
--- a/arch/x86/include/asm/resctrl.h
+++ b/arch/x86/include/asm/resctrl.h
@@ -218,6 +218,9 @@ int resctrl_arch_measure_l2_residency(void *_plr);
int resctrl_arch_measure_l3_residency(void *_plr);
void resctrl_cpu_detect(struct cpuinfo_x86 *c);
+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
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/resctrl/core.c
index cb8119d58c30..b8e4a7a2ebb8 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -283,6 +283,11 @@ static void rdt_get_cdp_l2_config(void)
rdt_get_cdp_config(RDT_RESOURCE_L2);
}
+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_resource *hw_res = resctrl_to_arch_res(m->res);
diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 6f6785a31efe..40704445ac38 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -17,8 +17,6 @@
#define CQM_LIMBOCHECK_INTERVAL 1000
#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
@@ -371,13 +369,6 @@ static inline struct rdt_resource *resctrl_inc(struct rdt_resource *res)
return &hw_res->r_resctrl;
}
-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);
-
/*
* To return the common struct rdt_resource, which is contained in struct
* rdt_hw_resource, walk the resctrl member of struct rdt_hw_resource.
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
+#define MAX_MBA_BW 100u
+#define MBM_OVERFLOW_INTERVAL 1000
+
/* Reads to Local DRAM Memory */
#define READS_TO_LOCAL_MEM BIT(0)
--
2.39.2
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