arch/x86/kernel/cpu/resctrl/internal.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_RESCTRL_INTERNAL_H
   3 #define _ASM_X86_RESCTRL_INTERNAL_H
   4
   5 #include <linux/sched.h>
   6 #include <linux/kernfs.h>
   7 #include <linux/fs_context.h>
   8 #include <linux/jump_label.h>
   9
  10 #define MSR_IA32_L3_QOS_CFG             0xc81
  11 #define MSR_IA32_L2_QOS_CFG             0xc82
  12 #define MSR_IA32_L3_CBM_BASE            0xc90
  13 #define MSR_IA32_L2_CBM_BASE            0xd10
  14 #define MSR_IA32_MBA_THRTL_BASE         0xd50
  15 #define MSR_IA32_MBA_BW_BASE            0xc0000200
  16
  17 #define MSR_IA32_QM_CTR                 0x0c8e
  18 #define MSR_IA32_QM_EVTSEL              0x0c8d
  19
  20 #define L3_QOS_CDP_ENABLE               0x01ULL
  21
  22 #define L2_QOS_CDP_ENABLE               0x01ULL
  23
  24 /*
  25  * Event IDs are used to program IA32_QM_EVTSEL before reading event
  26  * counter from IA32_QM_CTR
  27  */
  28 #define QOS_L3_OCCUP_EVENT_ID           0x01
  29 #define QOS_L3_MBM_TOTAL_EVENT_ID       0x02
  30 #define QOS_L3_MBM_LOCAL_EVENT_ID       0x03
  31
  32 #define CQM_LIMBOCHECK_INTERVAL 1000
  33
  34 #define MBM_CNTR_WIDTH                  24
  35 #define MBM_OVERFLOW_INTERVAL           1000
  36 #define MAX_MBA_BW                      100u
  37 #define MBA_IS_LINEAR                   0x4
  38 #define MBA_MAX_MBPS                    U32_MAX
  39 #define MAX_MBA_BW_AMD                  0x800
  40
  41 #define RMID_VAL_ERROR                  BIT_ULL(63)
  42 #define RMID_VAL_UNAVAIL                BIT_ULL(62)
  43
  44
  45 struct rdt_fs_context {
  46         struct kernfs_fs_context        kfc;
  47         bool                            enable_cdpl2;
  48         bool                            enable_cdpl3;
  49         bool                            enable_mba_mbps;
  50 };
  51
  52 static inline struct rdt_fs_context *rdt_fc2context(struct fs_context *fc)
  53 {
  54         struct kernfs_fs_context *kfc = fc->fs_private;
  55
  56         return container_of(kfc, struct rdt_fs_context, kfc);
  57 }
  58
  59 DECLARE_STATIC_KEY_FALSE(rdt_enable_key);
  60
  61 /**
  62  * struct mon_evt - Entry in the event list of a resource
  63  * @evtid:              event id
  64  * @name:               name of the event
  65  */
  66 struct mon_evt {
  67         u32                     evtid;
  68         char                    *name;
  69         struct list_head        list;
  70 };
  71
  72 /**
  73  * struct mon_data_bits - Monitoring details for each event file
  74  * @rid:               Resource id associated with the event file.
  75  * @evtid:             Event id associated with the event file
  76  * @domid:             The domain to which the event file belongs
  77  */
  78 union mon_data_bits {
  79         void *priv;
  80         struct {
  81                 unsigned int rid        : 10;
  82                 unsigned int evtid      : 8;
  83                 unsigned int domid      : 14;
  84         } u;
  85 };
  86
  87 struct rmid_read {
  88         struct rdtgroup         *rgrp;
  89         struct rdt_domain       *d;
  90         int                     evtid;
  91         bool                    first;
  92         u64                     val;
  93 };
  94
  95 extern unsigned int resctrl_cqm_threshold;
  96 extern bool rdt_alloc_capable;
  97 extern bool rdt_mon_capable;
  98 extern unsigned int rdt_mon_features;
  99
 100 enum rdt_group_type {
 101         RDTCTRL_GROUP = 0,
 102         RDTMON_GROUP,
 103         RDT_NUM_GROUP,
 104 };
 105
 106 /**
 107  * enum rdtgrp_mode - Mode of a RDT resource group
 108  * @RDT_MODE_SHAREABLE: This resource group allows sharing of its allocations
 109  * @RDT_MODE_EXCLUSIVE: No sharing of this resource group's allocations allowed
 110  * @RDT_MODE_PSEUDO_LOCKSETUP: Resource group will be used for Pseudo-Locking
 111  * @RDT_MODE_PSEUDO_LOCKED: No sharing of this resource group's allocations
 112  *                          allowed AND the allocations are Cache Pseudo-Locked
 113  *
 114  * The mode of a resource group enables control over the allowed overlap
 115  * between allocations associated with different resource groups (classes
 116  * of service). User is able to modify the mode of a resource group by
 117  * writing to the "mode" resctrl file associated with the resource group.
 118  *
 119  * The "shareable", "exclusive", and "pseudo-locksetup" modes are set by
 120  * writing the appropriate text to the "mode" file. A resource group enters
 121  * "pseudo-locked" mode after the schemata is written while the resource
 122  * group is in "pseudo-locksetup" mode.
 123  */
 124 enum rdtgrp_mode {
 125         RDT_MODE_SHAREABLE = 0,
 126         RDT_MODE_EXCLUSIVE,
 127         RDT_MODE_PSEUDO_LOCKSETUP,
 128         RDT_MODE_PSEUDO_LOCKED,
 129
 130         /* Must be last */
 131         RDT_NUM_MODES,
 132 };
 133
 134 /**
 135  * struct mongroup - store mon group's data in resctrl fs.
 136  * @mon_data_kn         kernlfs node for the mon_data directory
 137  * @parent:                     parent rdtgrp
 138  * @crdtgrp_list:               child rdtgroup node list
 139  * @rmid:                       rmid for this rdtgroup
 140  */
 141 struct mongroup {
 142         struct kernfs_node      *mon_data_kn;
 143         struct rdtgroup         *parent;
 144         struct list_head        crdtgrp_list;
 145         u32                     rmid;
 146 };
 147
 148 /**
 149  * struct pseudo_lock_region - pseudo-lock region information
 150  * @r:                  RDT resource to which this pseudo-locked region
 151  *                      belongs
 152  * @d:                  RDT domain to which this pseudo-locked region
 153  *                      belongs
 154  * @cbm:                bitmask of the pseudo-locked region
 155  * @lock_thread_wq:     waitqueue used to wait on the pseudo-locking thread
 156  *                      completion
 157  * @thread_done:        variable used by waitqueue to test if pseudo-locking
 158  *                      thread completed
 159  * @cpu:                core associated with the cache on which the setup code
 160  *                      will be run
 161  * @line_size:          size of the cache lines
 162  * @size:               size of pseudo-locked region in bytes
 163  * @kmem:               the kernel memory associated with pseudo-locked region
 164  * @minor:              minor number of character device associated with this
 165  *                      region
 166  * @debugfs_dir:        pointer to this region's directory in the debugfs
 167  *                      filesystem
 168  * @pm_reqs:            Power management QoS requests related to this region
 169  */
 170 struct pseudo_lock_region {
 171         struct rdt_resource     *r;
 172         struct rdt_domain       *d;
 173         u32                     cbm;
 174         wait_queue_head_t       lock_thread_wq;
 175         int                     thread_done;
 176         int                     cpu;
 177         unsigned int            line_size;
 178         unsigned int            size;
 179         void                    *kmem;
 180         unsigned int            minor;
 181         struct dentry           *debugfs_dir;
 182         struct list_head        pm_reqs;
 183 };
 184
 185 /**
 186  * struct rdtgroup - store rdtgroup's data in resctrl file system.
 187  * @kn:                         kernfs node
 188  * @rdtgroup_list:              linked list for all rdtgroups
 189  * @closid:                     closid for this rdtgroup
 190  * @cpu_mask:                   CPUs assigned to this rdtgroup
 191  * @flags:                      status bits
 192  * @waitcount:                  how many cpus expect to find this
 193  *                              group when they acquire rdtgroup_mutex
 194  * @type:                       indicates type of this rdtgroup - either
 195  *                              monitor only or ctrl_mon group
 196  * @mon:                        mongroup related data
 197  * @mode:                       mode of resource group
 198  * @plr:                        pseudo-locked region
 199  */
 200 struct rdtgroup {
 201         struct kernfs_node              *kn;
 202         struct list_head                rdtgroup_list;
 203         u32                             closid;
 204         struct cpumask                  cpu_mask;
 205         int                             flags;
 206         atomic_t                        waitcount;
 207         enum rdt_group_type             type;
 208         struct mongroup                 mon;
 209         enum rdtgrp_mode                mode;
 210         struct pseudo_lock_region       *plr;
 211 };
 212
 213 /* rdtgroup.flags */
 214 #define RDT_DELETED             1
 215
 216 /* rftype.flags */
 217 #define RFTYPE_FLAGS_CPUS_LIST  1
 218
 219 /*
 220  * Define the file type flags for base and info directories.
 221  */
 222 #define RFTYPE_INFO                     BIT(0)
 223 #define RFTYPE_BASE                     BIT(1)
 224 #define RF_CTRLSHIFT                    4
 225 #define RF_MONSHIFT                     5
 226 #define RF_TOPSHIFT                     6
 227 #define RFTYPE_CTRL                     BIT(RF_CTRLSHIFT)
 228 #define RFTYPE_MON                      BIT(RF_MONSHIFT)
 229 #define RFTYPE_TOP                      BIT(RF_TOPSHIFT)
 230 #define RFTYPE_RES_CACHE                BIT(8)
 231 #define RFTYPE_RES_MB                   BIT(9)
 232 #define RF_CTRL_INFO                    (RFTYPE_INFO | RFTYPE_CTRL)
 233 #define RF_MON_INFO                     (RFTYPE_INFO | RFTYPE_MON)
 234 #define RF_TOP_INFO                     (RFTYPE_INFO | RFTYPE_TOP)
 235 #define RF_CTRL_BASE                    (RFTYPE_BASE | RFTYPE_CTRL)
 236
 237 /* List of all resource groups */
 238 extern struct list_head rdt_all_groups;
 239
 240 extern int max_name_width, max_data_width;
 241
 242 int __init rdtgroup_init(void);
 243 void __exit rdtgroup_exit(void);
 244
 245 /**
 246  * struct rftype - describe each file in the resctrl file system
 247  * @name:       File name
 248  * @mode:       Access mode
 249  * @kf_ops:     File operations
 250  * @flags:      File specific RFTYPE_FLAGS_* flags
 251  * @fflags:     File specific RF_* or RFTYPE_* flags
 252  * @seq_show:   Show content of the file
 253  * @write:      Write to the file
 254  */
 255 struct rftype {
 256         char                    *name;
 257         umode_t                 mode;
 258         struct kernfs_ops       *kf_ops;
 259         unsigned long           flags;
 260         unsigned long           fflags;
 261
 262         int (*seq_show)(struct kernfs_open_file *of,
 263                         struct seq_file *sf, void *v);
 264         /*
 265          * write() is the generic write callback which maps directly to
 266          * kernfs write operation and overrides all other operations.
 267          * Maximum write size is determined by ->max_write_len.
 268          */
 269         ssize_t (*write)(struct kernfs_open_file *of,
 270                          char *buf, size_t nbytes, loff_t off);
 271 };
 272
 273 /**
 274  * struct mbm_state - status for each MBM counter in each domain
 275  * @chunks:     Total data moved (multiply by rdt_group.mon_scale to get bytes)
 276  * @prev_msr    Value of IA32_QM_CTR for this RMID last time we read it
 277  * @chunks_bw   Total local data moved. Used for bandwidth calculation
 278  * @prev_bw_msr:Value of previous IA32_QM_CTR for bandwidth counting
 279  * @prev_bw     The most recent bandwidth in MBps
 280  * @delta_bw    Difference between the current and previous bandwidth
 281  * @delta_comp  Indicates whether to compute the delta_bw
 282  */
 283 struct mbm_state {
 284         u64     chunks;
 285         u64     prev_msr;
 286         u64     chunks_bw;
 287         u64     prev_bw_msr;
 288         u32     prev_bw;
 289         u32     delta_bw;
 290         bool    delta_comp;
 291 };
 292
 293 /**
 294  * struct rdt_domain - group of cpus sharing an RDT resource
 295  * @list:       all instances of this resource
 296  * @id:         unique id for this instance
 297  * @cpu_mask:   which cpus share this resource
 298  * @rmid_busy_llc:
 299  *              bitmap of which limbo RMIDs are above threshold
 300  * @mbm_total:  saved state for MBM total bandwidth
 301  * @mbm_local:  saved state for MBM local bandwidth
 302  * @mbm_over:   worker to periodically read MBM h/w counters
 303  * @cqm_limbo:  worker to periodically read CQM h/w counters
 304  * @mbm_work_cpu:
 305  *              worker cpu for MBM h/w counters
 306  * @cqm_work_cpu:
 307  *              worker cpu for CQM h/w counters
 308  * @ctrl_val:   array of cache or mem ctrl values (indexed by CLOSID)
 309  * @mbps_val:   When mba_sc is enabled, this holds the bandwidth in MBps
 310  * @new_ctrl:   new ctrl value to be loaded
 311  * @have_new_ctrl: did user provide new_ctrl for this domain
 312  * @plr:        pseudo-locked region (if any) associated with domain
 313  */
 314 struct rdt_domain {
 315         struct list_head                list;
 316         int                             id;
 317         struct cpumask                  cpu_mask;
 318         unsigned long                   *rmid_busy_llc;
 319         struct mbm_state                *mbm_total;
 320         struct mbm_state                *mbm_local;
 321         struct delayed_work             mbm_over;
 322         struct delayed_work             cqm_limbo;
 323         int                             mbm_work_cpu;
 324         int                             cqm_work_cpu;
 325         u32                             *ctrl_val;
 326         u32                             *mbps_val;
 327         u32                             new_ctrl;
 328         bool                            have_new_ctrl;
 329         struct pseudo_lock_region       *plr;
 330 };
 331
 332 /**
 333  * struct msr_param - set a range of MSRs from a domain
 334  * @res:       The resource to use
 335  * @low:       Beginning index from base MSR
 336  * @high:      End index
 337  */
 338 struct msr_param {
 339         struct rdt_resource     *res;
 340         int                     low;
 341         int                     high;
 342 };
 343
 344 /**
 345  * struct rdt_cache - Cache allocation related data
 346  * @cbm_len:            Length of the cache bit mask
 347  * @min_cbm_bits:       Minimum number of consecutive bits to be set
 348  * @cbm_idx_mult:       Multiplier of CBM index
 349  * @cbm_idx_offset:     Offset of CBM index. CBM index is computed by:
 350  *                      closid * cbm_idx_multi + cbm_idx_offset
 351  *                      in a cache bit mask
 352  * @shareable_bits:     Bitmask of shareable resource with other
 353  *                      executing entities
 354  */
 355 struct rdt_cache {
 356         unsigned int    cbm_len;
 357         unsigned int    min_cbm_bits;
 358         unsigned int    cbm_idx_mult;
 359         unsigned int    cbm_idx_offset;
 360         unsigned int    shareable_bits;
 361 };
 362
 363 /**
 364  * struct rdt_membw - Memory bandwidth allocation related data
 365  * @max_delay:          Max throttle delay. Delay is the hardware
 366  *                      representation for memory bandwidth.
 367  * @min_bw:             Minimum memory bandwidth percentage user can request
 368  * @bw_gran:            Granularity at which the memory bandwidth is allocated
 369  * @delay_linear:       True if memory B/W delay is in linear scale
 370  * @mba_sc:             True if MBA software controller(mba_sc) is enabled
 371  * @mb_map:             Mapping of memory B/W percentage to memory B/W delay
 372  */
 373 struct rdt_membw {
 374         u32             max_delay;
 375         u32             min_bw;
 376         u32             bw_gran;
 377         u32             delay_linear;
 378         bool            mba_sc;
 379         u32             *mb_map;
 380 };
 381
 382 static inline bool is_llc_occupancy_enabled(void)
 383 {
 384         return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID));
 385 }
 386
 387 static inline bool is_mbm_total_enabled(void)
 388 {
 389         return (rdt_mon_features & (1 << QOS_L3_MBM_TOTAL_EVENT_ID));
 390 }
 391
 392 static inline bool is_mbm_local_enabled(void)
 393 {
 394         return (rdt_mon_features & (1 << QOS_L3_MBM_LOCAL_EVENT_ID));
 395 }
 396
 397 static inline bool is_mbm_enabled(void)
 398 {
 399         return (is_mbm_total_enabled() || is_mbm_local_enabled());
 400 }
 401
 402 static inline bool is_mbm_event(int e)
 403 {
 404         return (e >= QOS_L3_MBM_TOTAL_EVENT_ID &&
 405                 e <= QOS_L3_MBM_LOCAL_EVENT_ID);
 406 }
 407
 408 struct rdt_parse_data {
 409         struct rdtgroup         *rdtgrp;
 410         char                    *buf;
 411 };
 412
 413 /**
 414  * struct rdt_resource - attributes of an RDT resource
 415  * @rid:                The index of the resource
 416  * @alloc_enabled:      Is allocation enabled on this machine
 417  * @mon_enabled:        Is monitoring enabled for this feature
 418  * @alloc_capable:      Is allocation available on this machine
 419  * @mon_capable:        Is monitor feature available on this machine
 420  * @name:               Name to use in "schemata" file
 421  * @num_closid:         Number of CLOSIDs available
 422  * @cache_level:        Which cache level defines scope of this resource
 423  * @default_ctrl:       Specifies default cache cbm or memory B/W percent.
 424  * @msr_base:           Base MSR address for CBMs
 425  * @msr_update:         Function pointer to update QOS MSRs
 426  * @data_width:         Character width of data when displaying
 427  * @domains:            All domains for this resource
 428  * @cache:              Cache allocation related data
 429  * @format_str:         Per resource format string to show domain value
 430  * @parse_ctrlval:      Per resource function pointer to parse control values
 431  * @cbm_validate        Cache bitmask validate function
 432  * @evt_list:           List of monitoring events
 433  * @num_rmid:           Number of RMIDs available
 434  * @mon_scale:          cqm counter * mon_scale = occupancy in bytes
 435  * @fflags:             flags to choose base and info files
 436  */
 437 struct rdt_resource {
 438         int                     rid;
 439         bool                    alloc_enabled;
 440         bool                    mon_enabled;
 441         bool                    alloc_capable;
 442         bool                    mon_capable;
 443         char                    *name;
 444         int                     num_closid;
 445         int                     cache_level;
 446         u32                     default_ctrl;
 447         unsigned int            msr_base;
 448         void (*msr_update)      (struct rdt_domain *d, struct msr_param *m,
 449                                  struct rdt_resource *r);
 450         int                     data_width;
 451         struct list_head        domains;
 452         struct rdt_cache        cache;
 453         struct rdt_membw        membw;
 454         const char              *format_str;
 455         int (*parse_ctrlval)(struct rdt_parse_data *data,
 456                              struct rdt_resource *r,
 457                              struct rdt_domain *d);
 458         bool (*cbm_validate)(char *buf, u32 *data, struct rdt_resource *r);
 459         struct list_head        evt_list;
 460         int                     num_rmid;
 461         unsigned int            mon_scale;
 462         unsigned long           fflags;
 463 };
 464
 465 int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r,
 466               struct rdt_domain *d);
 467 int parse_bw_intel(struct rdt_parse_data *data, struct rdt_resource *r,
 468                    struct rdt_domain *d);
 469 int parse_bw_amd(struct rdt_parse_data *data, struct rdt_resource *r,
 470                  struct rdt_domain *d);
 471
 472 extern struct mutex rdtgroup_mutex;
 473
 474 extern struct rdt_resource rdt_resources_all[];
 475 extern struct rdtgroup rdtgroup_default;
 476 DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key);
 477
 478 extern struct dentry *debugfs_resctrl;
 479
 480 enum {
 481         RDT_RESOURCE_L3,
 482         RDT_RESOURCE_L3DATA,
 483         RDT_RESOURCE_L3CODE,
 484         RDT_RESOURCE_L2,
 485         RDT_RESOURCE_L2DATA,
 486         RDT_RESOURCE_L2CODE,
 487         RDT_RESOURCE_MBA,
 488
 489         /* Must be the last */
 490         RDT_NUM_RESOURCES,
 491 };
 492
 493 #define for_each_rdt_resource(r)                                              \
 494         for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
 495              r++)
 496
 497 #define for_each_capable_rdt_resource(r)                                      \
 498         for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
 499              r++)                                                             \
 500                 if (r->alloc_capable || r->mon_capable)
 501
 502 #define for_each_alloc_capable_rdt_resource(r)                                \
 503         for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
 504              r++)                                                             \
 505                 if (r->alloc_capable)
 506
 507 #define for_each_mon_capable_rdt_resource(r)                                  \
 508         for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
 509              r++)                                                             \
 510                 if (r->mon_capable)
 511
 512 #define for_each_alloc_enabled_rdt_resource(r)                                \
 513         for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
 514              r++)                                                             \
 515                 if (r->alloc_enabled)
 516
 517 #define for_each_mon_enabled_rdt_resource(r)                                  \
 518         for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\
 519              r++)                                                             \
 520                 if (r->mon_enabled)
 521
 522 /* CPUID.(EAX=10H, ECX=ResID=1).EAX */
 523 union cpuid_0x10_1_eax {
 524         struct {
 525                 unsigned int cbm_len:5;
 526         } split;
 527         unsigned int full;
 528 };
 529
 530 /* CPUID.(EAX=10H, ECX=ResID=3).EAX */
 531 union cpuid_0x10_3_eax {
 532         struct {
 533                 unsigned int max_delay:12;
 534         } split;
 535         unsigned int full;
 536 };
 537
 538 /* CPUID.(EAX=10H, ECX=ResID).EDX */
 539 union cpuid_0x10_x_edx {
 540         struct {
 541                 unsigned int cos_max:16;
 542         } split;
 543         unsigned int full;
 544 };
 545
 546 void rdt_last_cmd_clear(void);
 547 void rdt_last_cmd_puts(const char *s);
 548 void rdt_last_cmd_printf(const char *fmt, ...);
 549
 550 void rdt_ctrl_update(void *arg);
 551 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn);
 552 void rdtgroup_kn_unlock(struct kernfs_node *kn);
 553 int rdtgroup_kn_mode_restrict(struct rdtgroup *r, const char *name);
 554 int rdtgroup_kn_mode_restore(struct rdtgroup *r, const char *name,
 555                              umode_t mask);
 556 struct rdt_domain *rdt_find_domain(struct rdt_resource *r, int id,
 557                                    struct list_head **pos);
 558 ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
 559                                 char *buf, size_t nbytes, loff_t off);
 560 int rdtgroup_schemata_show(struct kernfs_open_file *of,
 561                            struct seq_file *s, void *v);
 562 bool rdtgroup_cbm_overlaps(struct rdt_resource *r, struct rdt_domain *d,
 563                            unsigned long cbm, int closid, bool exclusive);
 564 unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r, struct rdt_domain *d,
 565                                   unsigned long cbm);
 566 enum rdtgrp_mode rdtgroup_mode_by_closid(int closid);
 567 int rdtgroup_tasks_assigned(struct rdtgroup *r);
 568 int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp);
 569 int rdtgroup_locksetup_exit(struct rdtgroup *rdtgrp);
 570 bool rdtgroup_cbm_overlaps_pseudo_locked(struct rdt_domain *d, unsigned long cbm);
 571 bool rdtgroup_pseudo_locked_in_hierarchy(struct rdt_domain *d);
 572 int rdt_pseudo_lock_init(void);
 573 void rdt_pseudo_lock_release(void);
 574 int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp);
 575 void rdtgroup_pseudo_lock_remove(struct rdtgroup *rdtgrp);
 576 struct rdt_domain *get_domain_from_cpu(int cpu, struct rdt_resource *r);
 577 int update_domains(struct rdt_resource *r, int closid);
 578 int closids_supported(void);
 579 void closid_free(int closid);
 580 int alloc_rmid(void);
 581 void free_rmid(u32 rmid);
 582 int rdt_get_mon_l3_config(struct rdt_resource *r);
 583 void mon_event_count(void *info);
 584 int rdtgroup_mondata_show(struct seq_file *m, void *arg);
 585 void rmdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
 586                                     unsigned int dom_id);
 587 void mkdir_mondata_subdir_allrdtgrp(struct rdt_resource *r,
 588                                     struct rdt_domain *d);
 589 void mon_event_read(struct rmid_read *rr, struct rdt_domain *d,
 590                     struct rdtgroup *rdtgrp, int evtid, int first);
 591 void mbm_setup_overflow_handler(struct rdt_domain *dom,
 592                                 unsigned long delay_ms);
 593 void mbm_handle_overflow(struct work_struct *work);
 594 bool is_mba_sc(struct rdt_resource *r);
 595 void setup_default_ctrlval(struct rdt_resource *r, u32 *dc, u32 *dm);
 596 u32 delay_bw_map(unsigned long bw, struct rdt_resource *r);
 597 void cqm_setup_limbo_handler(struct rdt_domain *dom, unsigned long delay_ms);
 598 void cqm_handle_limbo(struct work_struct *work);
 599 bool has_busy_rmid(struct rdt_resource *r, struct rdt_domain *d);
 600 void __check_limbo(struct rdt_domain *d, bool force_free);
 601 bool cbm_validate_intel(char *buf, u32 *data, struct rdt_resource *r);
 602 bool cbm_validate_amd(char *buf, u32 *data, struct rdt_resource *r);
 603
 604 #endif /* _ASM_X86_RESCTRL_INTERNAL_H */