[PATCH v1 30/31] x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl

James Morse
2024-03-21T16:53:07Z

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.

Signed-off-by: James Morse <james.morse@arm.com>
---
arch/x86/include/asm/resctrl.h | 3 +++
arch/x86/kernel/cpu/resctrl/core.c | 5 ++++
arch/x86/kernel/cpu/resctrl/internal.h | 36 --------------------------
include/linux/resctrl.h | 3 +++
include/linux/resctrl_types.h | 30 +++++++++++++++++++++
5 files changed, 41 insertions(+), 36 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 f94ad04023c3..c0fb2e22e110 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -306,6 +306,11 @@ 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 rdt_domain *d, struct msr_param *m, struct rdt_resource *r)
{
diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 56218193a8ba..0f7e3f10941b 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -15,12 +15,6 @@

#define L2_QOS_CDP_ENABLE 0x01ULL

-#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

#define RMID_VAL_ERROR BIT_ULL(63)
@@ -210,29 +204,6 @@ struct rdtgroup {
struct pseudo_lock_region *plr;
};

-/* rdtgroup.flags */
-#define RDT_DELETED 1
-
-/* rftype.flags */
-#define RFTYPE_FLAGS_CPUS_LIST 1
-
-/*
- * Define the file type flags for base and info directories.
- */
-#define RFTYPE_INFO BIT(0)
-#define RFTYPE_BASE BIT(1)
-#define RFTYPE_CTRL BIT(4)
-#define RFTYPE_MON BIT(5)
-#define RFTYPE_TOP BIT(6)
-#define RFTYPE_RES_CACHE BIT(8)
-#define RFTYPE_RES_MB BIT(9)
-#define RFTYPE_DEBUG BIT(10)
-#define RFTYPE_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL)
-#define RFTYPE_MON_INFO (RFTYPE_INFO | RFTYPE_MON)
-#define RFTYPE_TOP_INFO (RFTYPE_INFO | RFTYPE_TOP)
-#define RFTYPE_CTRL_BASE (RFTYPE_BASE | RFTYPE_CTRL)
-#define RFTYPE_MON_BASE (RFTYPE_BASE | RFTYPE_MON)
-
/* List of all resource groups */
extern struct list_head rdt_all_groups;

@@ -370,13 +341,6 @@ 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.h b/include/linux/resctrl.h
index f786ffceeda3..00cc0457af50 100644
--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h
@@ -41,6 +41,9 @@ int proc_resctrl_show(struct seq_file *m,
*/
#define RESCTRL_MAX_CBM 32

+extern unsigned int resctrl_rmid_realloc_limit;
+extern unsigned int resctrl_rmid_realloc_threshold;
+
/**
* struct pseudo_lock_region - pseudo-lock region information
* @s: Resctrl schema for the resource to which this
diff --git a/include/linux/resctrl_types.h b/include/linux/resctrl_types.h
index 4788bd95dac6..fe0b10b589c0 100644
--- a/include/linux/resctrl_types.h
+++ b/include/linux/resctrl_types.h
@@ -7,6 +7,36 @@
#ifndef __LINUX_RESCTRL_TYPES_H
#define __LINUX_RESCTRL_TYPES_H

+#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
+
+/* rdtgroup.flags */
+#define RDT_DELETED 1
+
+/* rftype.flags */
+#define RFTYPE_FLAGS_CPUS_LIST 1
+
+/*
+ * Define the file type flags for base and info directories.
+ */
+#define RFTYPE_INFO BIT(0)
+#define RFTYPE_BASE BIT(1)
+#define RFTYPE_CTRL BIT(4)
+#define RFTYPE_MON BIT(5)
+#define RFTYPE_TOP BIT(6)
+#define RFTYPE_RES_CACHE BIT(8)
+#define RFTYPE_RES_MB BIT(9)
+#define RFTYPE_DEBUG BIT(10)
+#define RFTYPE_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL)
+#define RFTYPE_MON_INFO (RFTYPE_INFO | RFTYPE_MON)
+#define RFTYPE_TOP_INFO (RFTYPE_INFO | RFTYPE_TOP)
+#define RFTYPE_CTRL_BASE (RFTYPE_BASE | RFTYPE_CTRL)
+#define RFTYPE_MON_BASE (RFTYPE_BASE | RFTYPE_MON)
+
/* Reads to Local DRAM Memory */
#define READS_TO_LOCAL_MEM BIT(0)

--
2.39.2