1 files changed, 36 insertions, 113 deletions

diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 6a5f60a37219..caf9248339d5 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -2,6 +2,7 @@
 #ifndef _ASM_X86_RESCTRL_INTERNAL_H
 #define _ASM_X86_RESCTRL_INTERNAL_H
 
+#include <linux/resctrl.h>
 #include <linux/sched.h>
 #include <linux/kernfs.h>
 #include <linux/fs_context.h>
@@ -353,67 +354,6 @@ struct msr_param {
 	int			high;
 };
 
-/**
- * struct rdt_cache - Cache allocation related data
- * @cbm_len:		Length of the cache bit mask
- * @min_cbm_bits:	Minimum number of consecutive bits to be set
- * @cbm_idx_mult:	Multiplier of CBM index
- * @cbm_idx_offset:	Offset of CBM index. CBM index is computed by:
- *			closid * cbm_idx_multi + cbm_idx_offset
- *			in a cache bit mask
- * @shareable_bits:	Bitmask of shareable resource with other
- *			executing entities
- * @arch_has_sparse_bitmaps:	True if a bitmap like f00f is valid.
- * @arch_has_empty_bitmaps:	True if the '0' bitmap is valid.
- * @arch_has_per_cpu_cfg:	True if QOS_CFG register for this cache
- *				level has CPU scope.
- */
-struct rdt_cache {
-	unsigned int	cbm_len;
-	unsigned int	min_cbm_bits;
-	unsigned int	cbm_idx_mult;
-	unsigned int	cbm_idx_offset;
-	unsigned int	shareable_bits;
-	bool		arch_has_sparse_bitmaps;
-	bool		arch_has_empty_bitmaps;
-	bool		arch_has_per_cpu_cfg;
-};
-
-/**
- * enum membw_throttle_mode - System's memory bandwidth throttling mode
- * @THREAD_THROTTLE_UNDEFINED:	Not relevant to the system
- * @THREAD_THROTTLE_MAX:	Memory bandwidth is throttled at the core
- *				always using smallest bandwidth percentage
- *				assigned to threads, aka "max throttling"
- * @THREAD_THROTTLE_PER_THREAD:	Memory bandwidth is throttled at the thread
- */
-enum membw_throttle_mode {
-	THREAD_THROTTLE_UNDEFINED = 0,
-	THREAD_THROTTLE_MAX,
-	THREAD_THROTTLE_PER_THREAD,
-};
-
-/**
- * struct rdt_membw - Memory bandwidth allocation related data
- * @min_bw:		Minimum memory bandwidth percentage user can request
- * @bw_gran:		Granularity at which the memory bandwidth is allocated
- * @delay_linear:	True if memory B/W delay is in linear scale
- * @arch_needs_linear:	True if we can't configure non-linear resources
- * @throttle_mode:	Bandwidth throttling mode when threads request
- *			different memory bandwidths
- * @mba_sc:		True if MBA software controller(mba_sc) is enabled
- * @mb_map:		Mapping of memory B/W percentage to memory B/W delay
- */
-struct rdt_membw {
-	u32				min_bw;
-	u32				bw_gran;
-	u32				delay_linear;
-	bool				arch_needs_linear;
-	enum membw_throttle_mode	throttle_mode;
-	bool				mba_sc;
-	u32				*mb_map;
-};
-
 static inline bool is_llc_occupancy_enabled(void)
 {
 	return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID));
@@ -446,58 +386,33 @@ struct rdt_parse_data {
 };
 
 /**
- * struct rdt_resource - attributes of an RDT resource
- * @rid:		The index of the resource
- * @alloc_enabled:	Is allocation enabled on this machine
- * @mon_enabled:	Is monitoring enabled for this feature
- * @alloc_capable:	Is allocation available on this machine
- * @mon_capable:	Is monitor feature available on this machine
- * @name:		Name to use in "schemata" file
- * @num_closid:		Number of CLOSIDs available
- * @cache_level:	Which cache level defines scope of this resource
- * @default_ctrl:	Specifies default cache cbm or memory B/W percent.
+ * struct rdt_hw_resource - arch private attributes of a resctrl resource
+ * @r_resctrl:		Attributes of the resource used directly by resctrl.
+ * @num_closid:		Maximum number of closid this hardware can support.
  * @msr_base:		Base MSR address for CBMs
  * @msr_update:		Function pointer to update QOS MSRs
- * @data_width:		Character width of data when displaying
- * @domains:		All domains for this resource
- * @cache:		Cache allocation related data
- * @membw:		If the component has bandwidth controls, their properties.
- * @format_str:		Per resource format string to show domain value
- * @parse_ctrlval:	Per resource function pointer to parse control values
- * @evt_list:		List of monitoring events
- * @num_rmid:		Number of RMIDs available
  * @mon_scale:		cqm counter * mon_scale = occupancy in bytes
  * @mbm_width:		Monitor width, to detect and correct for overflow.
- * @fflags:		flags to choose base and info files
+ *
+ * Members of this structure are either private to the architecture
+ * e.g. mbm_width, or accessed via helpers that provide abstraction. e.g.
+ * msr_update and msr_base.
  */
-struct rdt_resource {
-	int			rid;
-	bool			alloc_enabled;
-	bool			mon_enabled;
-	bool			alloc_capable;
-	bool			mon_capable;
-	char			*name;
+struct rdt_hw_resource {
+	struct rdt_resource	r_resctrl;
 	int			num_closid;
-	int			cache_level;
-	u32			default_ctrl;
 	unsigned int		msr_base;
 	void (*msr_update)	(struct rdt_domain *d, struct msr_param *m,
 				 struct rdt_resource *r);
-	int			data_width;
-	struct list_head	domains;
-	struct rdt_cache	cache;
-	struct rdt_membw	membw;
-	const char		*format_str;
-	int (*parse_ctrlval)(struct rdt_parse_data *data,
-			     struct rdt_resource *r,
-			     struct rdt_domain *d);
-	struct list_head	evt_list;
-	int			num_rmid;
 	unsigned int		mon_scale;
 	unsigned int		mbm_width;
-	unsigned long		fflags;
 };
 
+static inline struct rdt_hw_resource *resctrl_to_arch_res(struct rdt_resource *r)
+{
+	return container_of(r, struct rdt_hw_resource, r_resctrl);
+}
+
 int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
 	      struct rdt_domain *d);
 int parse_bw(struct rdt_parse_data *data, struct rdt_resource *r,
@@ -505,7 +420,7 @@ int parse_bw(struct rdt_parse_data *data, struct rdt_resource *r,
 
 extern struct mutex rdtgroup_mutex;
 
-extern struct rdt_resource rdt_resources_all[];
+extern struct rdt_hw_resource rdt_resources_all[];
 extern struct rdtgroup rdtgroup_default;
 DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key);
 
@@ -524,33 +439,41 @@ enum {
 	RDT_NUM_RESOURCES,
 };
 
+static inline struct rdt_resource *resctrl_inc(struct rdt_resource *res)
+{
+	struct rdt_hw_resource *hw_res = resctrl_to_arch_res(res);
+
+	hw_res++;
+	return &hw_res->r_resctrl;
+}
+
+/*
+ * To return the common struct rdt_resource, which is contained in struct
+ * rdt_hw_resource, walk the resctrl member of struct rdt_hw_resource.
+ */
 #define for_each_rdt_resource(r)					      \
-	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
-	     r++)
+	for (r = &rdt_resources_all[0].r_resctrl;			      \
+	     r <= &rdt_resources_all[RDT_NUM_RESOURCES - 1].r_resctrl;	      \
+	     r = resctrl_inc(r))
 
 #define for_each_capable_rdt_resource(r)				      \
-	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
-	     r++)							      \
+	for_each_rdt_resource(r)					      \
 		if (r->alloc_capable || r->mon_capable)
 
 #define for_each_alloc_capable_rdt_resource(r)				      \
-	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
-	     r++)							      \
+	for_each_rdt_resource(r)					      \
 		if (r->alloc_capable)
 
 #define for_each_mon_capable_rdt_resource(r)				      \
-	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
-	     r++)							      \
+	for_each_rdt_resource(r)					      \
 		if (r->mon_capable)
 
 #define for_each_alloc_enabled_rdt_resource(r)				      \
-	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
-	     r++)							      \
+	for_each_rdt_resource(r)					      \
 		if (r->alloc_enabled)
 
 #define for_each_mon_enabled_rdt_resource(r)				      \
-	for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
-	     r++)							      \
+	for_each_rdt_resource(r)					      \
 		if (r->mon_enabled)
 
 /* CPUID.(EAX=10H, ECX=ResID=1).EAX */