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_BASE 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 #define MBM_CNTR_WIDTH_OFFSET_AMD 20 41 42 #define RMID_VAL_ERROR BIT_ULL(63) 43 #define RMID_VAL_UNAVAIL BIT_ULL(62) 44 /* 45 * With the above fields in use 62 bits remain in MSR_IA32_QM_CTR for 46 * data to be returned. The counter width is discovered from the hardware 47 * as an offset from MBM_CNTR_WIDTH_BASE. 48 */ 49 #define MBM_CNTR_WIDTH_OFFSET_MAX (62 - MBM_CNTR_WIDTH_BASE) 50 51 52 struct rdt_fs_context { 53 struct kernfs_fs_context kfc; 54 bool enable_cdpl2; 55 bool enable_cdpl3; 56 bool enable_mba_mbps; 57 }; 58 59 static inline struct rdt_fs_context *rdt_fc2context(struct fs_context *fc) 60 { 61 struct kernfs_fs_context *kfc = fc->fs_private; 62 63 return container_of(kfc, struct rdt_fs_context, kfc); 64 } 65 66 DECLARE_STATIC_KEY_FALSE(rdt_enable_key); 67 DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key); 68 69 /** 70 * struct mon_evt - Entry in the event list of a resource 71 * @evtid: event id 72 * @name: name of the event 73 * @list: entry in &rdt_resource->evt_list 74 */ 75 struct mon_evt { 76 u32 evtid; 77 char *name; 78 struct list_head list; 79 }; 80 81 /** 82 * union mon_data_bits - Monitoring details for each event file 83 * @priv: Used to store monitoring event data in @u 84 * as kernfs private data 85 * @rid: Resource id associated with the event file 86 * @evtid: Event id associated with the event file 87 * @domid: The domain to which the event file belongs 88 * @u: Name of the bit fields struct 89 */ 90 union mon_data_bits { 91 void *priv; 92 struct { 93 unsigned int rid : 10; 94 unsigned int evtid : 8; 95 unsigned int domid : 14; 96 } u; 97 }; 98 99 struct rmid_read { 100 struct rdtgroup *rgrp; 101 struct rdt_resource *r; 102 struct rdt_domain *d; 103 int evtid; 104 bool first; 105 u64 val; 106 }; 107 108 extern unsigned int resctrl_cqm_threshold; 109 extern bool rdt_alloc_capable; 110 extern bool rdt_mon_capable; 111 extern unsigned int rdt_mon_features; 112 113 enum rdt_group_type { 114 RDTCTRL_GROUP = 0, 115 RDTMON_GROUP, 116 RDT_NUM_GROUP, 117 }; 118 119 /** 120 * enum rdtgrp_mode - Mode of a RDT resource group 121 * @RDT_MODE_SHAREABLE: This resource group allows sharing of its allocations 122 * @RDT_MODE_EXCLUSIVE: No sharing of this resource group's allocations allowed 123 * @RDT_MODE_PSEUDO_LOCKSETUP: Resource group will be used for Pseudo-Locking 124 * @RDT_MODE_PSEUDO_LOCKED: No sharing of this resource group's allocations 125 * allowed AND the allocations are Cache Pseudo-Locked 126 * @RDT_NUM_MODES: Total number of modes 127 * 128 * The mode of a resource group enables control over the allowed overlap 129 * between allocations associated with different resource groups (classes 130 * of service). User is able to modify the mode of a resource group by 131 * writing to the "mode" resctrl file associated with the resource group. 132 * 133 * The "shareable", "exclusive", and "pseudo-locksetup" modes are set by 134 * writing the appropriate text to the "mode" file. A resource group enters 135 * "pseudo-locked" mode after the schemata is written while the resource 136 * group is in "pseudo-locksetup" mode. 137 */ 138 enum rdtgrp_mode { 139 RDT_MODE_SHAREABLE = 0, 140 RDT_MODE_EXCLUSIVE, 141 RDT_MODE_PSEUDO_LOCKSETUP, 142 RDT_MODE_PSEUDO_LOCKED, 143 144 /* Must be last */ 145 RDT_NUM_MODES, 146 }; 147 148 /** 149 * struct mongroup - store mon group's data in resctrl fs. 150 * @mon_data_kn: kernfs node for the mon_data directory 151 * @parent: parent rdtgrp 152 * @crdtgrp_list: child rdtgroup node list 153 * @rmid: rmid for this rdtgroup 154 */ 155 struct mongroup { 156 struct kernfs_node *mon_data_kn; 157 struct rdtgroup *parent; 158 struct list_head crdtgrp_list; 159 u32 rmid; 160 }; 161 162 /** 163 * struct pseudo_lock_region - pseudo-lock region information 164 * @r: RDT resource to which this pseudo-locked region 165 * belongs 166 * @d: RDT domain to which this pseudo-locked region 167 * belongs 168 * @cbm: bitmask of the pseudo-locked region 169 * @lock_thread_wq: waitqueue used to wait on the pseudo-locking thread 170 * completion 171 * @thread_done: variable used by waitqueue to test if pseudo-locking 172 * thread completed 173 * @cpu: core associated with the cache on which the setup code 174 * will be run 175 * @line_size: size of the cache lines 176 * @size: size of pseudo-locked region in bytes 177 * @kmem: the kernel memory associated with pseudo-locked region 178 * @minor: minor number of character device associated with this 179 * region 180 * @debugfs_dir: pointer to this region's directory in the debugfs 181 * filesystem 182 * @pm_reqs: Power management QoS requests related to this region 183 */ 184 struct pseudo_lock_region { 185 struct rdt_resource *r; 186 struct rdt_domain *d; 187 u32 cbm; 188 wait_queue_head_t lock_thread_wq; 189 int thread_done; 190 int cpu; 191 unsigned int line_size; 192 unsigned int size; 193 void *kmem; 194 unsigned int minor; 195 struct dentry *debugfs_dir; 196 struct list_head pm_reqs; 197 }; 198 199 /** 200 * struct rdtgroup - store rdtgroup's data in resctrl file system. 201 * @kn: kernfs node 202 * @rdtgroup_list: linked list for all rdtgroups 203 * @closid: closid for this rdtgroup 204 * @cpu_mask: CPUs assigned to this rdtgroup 205 * @flags: status bits 206 * @waitcount: how many cpus expect to find this 207 * group when they acquire rdtgroup_mutex 208 * @type: indicates type of this rdtgroup - either 209 * monitor only or ctrl_mon group 210 * @mon: mongroup related data 211 * @mode: mode of resource group 212 * @plr: pseudo-locked region 213 */ 214 struct rdtgroup { 215 struct kernfs_node *kn; 216 struct list_head rdtgroup_list; 217 u32 closid; 218 struct cpumask cpu_mask; 219 int flags; 220 atomic_t waitcount; 221 enum rdt_group_type type; 222 struct mongroup mon; 223 enum rdtgrp_mode mode; 224 struct pseudo_lock_region *plr; 225 }; 226 227 /* rdtgroup.flags */ 228 #define RDT_DELETED 1 229 230 /* rftype.flags */ 231 #define RFTYPE_FLAGS_CPUS_LIST 1 232 233 /* 234 * Define the file type flags for base and info directories. 235 */ 236 #define RFTYPE_INFO BIT(0) 237 #define RFTYPE_BASE BIT(1) 238 #define RF_CTRLSHIFT 4 239 #define RF_MONSHIFT 5 240 #define RF_TOPSHIFT 6 241 #define RFTYPE_CTRL BIT(RF_CTRLSHIFT) 242 #define RFTYPE_MON BIT(RF_MONSHIFT) 243 #define RFTYPE_TOP BIT(RF_TOPSHIFT) 244 #define RFTYPE_RES_CACHE BIT(8) 245 #define RFTYPE_RES_MB BIT(9) 246 #define RF_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL) 247 #define RF_MON_INFO (RFTYPE_INFO | RFTYPE_MON) 248 #define RF_TOP_INFO (RFTYPE_INFO | RFTYPE_TOP) 249 #define RF_CTRL_BASE (RFTYPE_BASE | RFTYPE_CTRL) 250 251 /* List of all resource groups */ 252 extern struct list_head rdt_all_groups; 253 254 extern int max_name_width, max_data_width; 255 256 int __init rdtgroup_init(void); 257 void __exit rdtgroup_exit(void); 258 259 /** 260 * struct rftype - describe each file in the resctrl file system 261 * @name: File name 262 * @mode: Access mode 263 * @kf_ops: File operations 264 * @flags: File specific RFTYPE_FLAGS_* flags 265 * @fflags: File specific RF_* or RFTYPE_* flags 266 * @seq_show: Show content of the file 267 * @write: Write to the file 268 */ 269 struct rftype { 270 char *name; 271 umode_t mode; 272 const struct kernfs_ops *kf_ops; 273 unsigned long flags; 274 unsigned long fflags; 275 276 int (*seq_show)(struct kernfs_open_file *of, 277 struct seq_file *sf, void *v); 278 /* 279 * write() is the generic write callback which maps directly to 280 * kernfs write operation and overrides all other operations. 281 * Maximum write size is determined by ->max_write_len. 282 */ 283 ssize_t (*write)(struct kernfs_open_file *of, 284 char *buf, size_t nbytes, loff_t off); 285 }; 286 287 /** 288 * struct mbm_state - status for each MBM counter in each domain 289 * @chunks: Total data moved (multiply by rdt_group.mon_scale to get bytes) 290 * @prev_msr: Value of IA32_QM_CTR for this RMID last time we read it 291 * @prev_bw_msr:Value of previous IA32_QM_CTR for bandwidth counting 292 * @prev_bw: The most recent bandwidth in MBps 293 * @delta_bw: Difference between the current and previous bandwidth 294 * @delta_comp: Indicates whether to compute the delta_bw 295 */ 296 struct mbm_state { 297 u64 chunks; 298 u64 prev_msr; 299 u64 prev_bw_msr; 300 u32 prev_bw; 301 u32 delta_bw; 302 bool delta_comp; 303 }; 304 305 /** 306 * struct rdt_domain - group of cpus sharing an RDT resource 307 * @list: all instances of this resource 308 * @id: unique id for this instance 309 * @cpu_mask: which cpus share this resource 310 * @rmid_busy_llc: 311 * bitmap of which limbo RMIDs are above threshold 312 * @mbm_total: saved state for MBM total bandwidth 313 * @mbm_local: saved state for MBM local bandwidth 314 * @mbm_over: worker to periodically read MBM h/w counters 315 * @cqm_limbo: worker to periodically read CQM h/w counters 316 * @mbm_work_cpu: 317 * worker cpu for MBM h/w counters 318 * @cqm_work_cpu: 319 * worker cpu for CQM h/w counters 320 * @ctrl_val: array of cache or mem ctrl values (indexed by CLOSID) 321 * @mbps_val: When mba_sc is enabled, this holds the bandwidth in MBps 322 * @new_ctrl: new ctrl value to be loaded 323 * @have_new_ctrl: did user provide new_ctrl for this domain 324 * @plr: pseudo-locked region (if any) associated with domain 325 */ 326 struct rdt_domain { 327 struct list_head list; 328 int id; 329 struct cpumask cpu_mask; 330 unsigned long *rmid_busy_llc; 331 struct mbm_state *mbm_total; 332 struct mbm_state *mbm_local; 333 struct delayed_work mbm_over; 334 struct delayed_work cqm_limbo; 335 int mbm_work_cpu; 336 int cqm_work_cpu; 337 u32 *ctrl_val; 338 u32 *mbps_val; 339 u32 new_ctrl; 340 bool have_new_ctrl; 341 struct pseudo_lock_region *plr; 342 }; 343 344 /** 345 * struct msr_param - set a range of MSRs from a domain 346 * @res: The resource to use 347 * @low: Beginning index from base MSR 348 * @high: End index 349 */ 350 struct msr_param { 351 struct rdt_resource *res; 352 int low; 353 int high; 354 }; 355 356 /** 357 * struct rdt_cache - Cache allocation related data 358 * @cbm_len: Length of the cache bit mask 359 * @min_cbm_bits: Minimum number of consecutive bits to be set 360 * @cbm_idx_mult: Multiplier of CBM index 361 * @cbm_idx_offset: Offset of CBM index. CBM index is computed by: 362 * closid * cbm_idx_multi + cbm_idx_offset 363 * in a cache bit mask 364 * @shareable_bits: Bitmask of shareable resource with other 365 * executing entities 366 * @arch_has_sparse_bitmaps: True if a bitmap like f00f is valid. 367 * @arch_has_empty_bitmaps: True if the '0' bitmap is valid. 368 * @arch_has_per_cpu_cfg: True if QOS_CFG register for this cache 369 * level has CPU scope. 370 */ 371 struct rdt_cache { 372 unsigned int cbm_len; 373 unsigned int min_cbm_bits; 374 unsigned int cbm_idx_mult; 375 unsigned int cbm_idx_offset; 376 unsigned int shareable_bits; 377 bool arch_has_sparse_bitmaps; 378 bool arch_has_empty_bitmaps; 379 bool arch_has_per_cpu_cfg; 380 }; 381 382 /** 383 * enum membw_throttle_mode - System's memory bandwidth throttling mode 384 * @THREAD_THROTTLE_UNDEFINED: Not relevant to the system 385 * @THREAD_THROTTLE_MAX: Memory bandwidth is throttled at the core 386 * always using smallest bandwidth percentage 387 * assigned to threads, aka "max throttling" 388 * @THREAD_THROTTLE_PER_THREAD: Memory bandwidth is throttled at the thread 389 */ 390 enum membw_throttle_mode { 391 THREAD_THROTTLE_UNDEFINED = 0, 392 THREAD_THROTTLE_MAX, 393 THREAD_THROTTLE_PER_THREAD, 394 }; 395 396 /** 397 * struct rdt_membw - Memory bandwidth allocation related data 398 * @min_bw: Minimum memory bandwidth percentage user can request 399 * @bw_gran: Granularity at which the memory bandwidth is allocated 400 * @delay_linear: True if memory B/W delay is in linear scale 401 * @arch_needs_linear: True if we can't configure non-linear resources 402 * @throttle_mode: Bandwidth throttling mode when threads request 403 * different memory bandwidths 404 * @mba_sc: True if MBA software controller(mba_sc) is enabled 405 * @mb_map: Mapping of memory B/W percentage to memory B/W delay 406 */ 407 struct rdt_membw { 408 u32 min_bw; 409 u32 bw_gran; 410 u32 delay_linear; 411 bool arch_needs_linear; 412 enum membw_throttle_mode throttle_mode; 413 bool mba_sc; 414 u32 *mb_map; 415 }; 416 417 static inline bool is_llc_occupancy_enabled(void) 418 { 419 return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID)); 420 } 421 422 static inline bool is_mbm_total_enabled(void) 423 { 424 return (rdt_mon_features & (1 << QOS_L3_MBM_TOTAL_EVENT_ID)); 425 } 426 427 static inline bool is_mbm_local_enabled(void) 428 { 429 return (rdt_mon_features & (1 << QOS_L3_MBM_LOCAL_EVENT_ID)); 430 } 431 432 static inline bool is_mbm_enabled(void) 433 { 434 return (is_mbm_total_enabled() || is_mbm_local_enabled()); 435 } 436 437 static inline bool is_mbm_event(int e) 438 { 439 return (e >= QOS_L3_MBM_TOTAL_EVENT_ID && 440 e <= QOS_L3_MBM_LOCAL_EVENT_ID); 441 } 442 443 struct rdt_parse_data { 444 struct rdtgroup *rdtgrp; 445 char *buf; 446 }; 447 448 /** 449 * struct rdt_resource - attributes of an RDT resource 450 * @rid: The index of the resource 451 * @alloc_enabled: Is allocation enabled on this machine 452 * @mon_enabled: Is monitoring enabled for this feature 453 * @alloc_capable: Is allocation available on this machine 454 * @mon_capable: Is monitor feature available on this machine 455 * @name: Name to use in "schemata" file 456 * @num_closid: Number of CLOSIDs available 457 * @cache_level: Which cache level defines scope of this resource 458 * @default_ctrl: Specifies default cache cbm or memory B/W percent. 459 * @msr_base: Base MSR address for CBMs 460 * @msr_update: Function pointer to update QOS MSRs 461 * @data_width: Character width of data when displaying 462 * @domains: All domains for this resource 463 * @cache: Cache allocation related data 464 * @membw: If the component has bandwidth controls, their properties. 465 * @format_str: Per resource format string to show domain value 466 * @parse_ctrlval: Per resource function pointer to parse control values 467 * @evt_list: List of monitoring events 468 * @num_rmid: Number of RMIDs available 469 * @mon_scale: cqm counter * mon_scale = occupancy in bytes 470 * @mbm_width: Monitor width, to detect and correct for overflow. 471 * @fflags: flags to choose base and info files 472 */ 473 struct rdt_resource { 474 int rid; 475 bool alloc_enabled; 476 bool mon_enabled; 477 bool alloc_capable; 478 bool mon_capable; 479 char *name; 480 int num_closid; 481 int cache_level; 482 u32 default_ctrl; 483 unsigned int msr_base; 484 void (*msr_update) (struct rdt_domain *d, struct msr_param *m, 485 struct rdt_resource *r); 486 int data_width; 487 struct list_head domains; 488 struct rdt_cache cache; 489 struct rdt_membw membw; 490 const char *format_str; 491 int (*parse_ctrlval)(struct rdt_parse_data *data, 492 struct rdt_resource *r, 493 struct rdt_domain *d); 494 struct list_head evt_list; 495 int num_rmid; 496 unsigned int mon_scale; 497 unsigned int mbm_width; 498 unsigned long fflags; 499 }; 500 501 int parse_cbm(struct rdt_parse_data *data, struct rdt_resource *r, 502 struct rdt_domain *d); 503 int parse_bw(struct rdt_parse_data *data, struct rdt_resource *r, 504 struct rdt_domain *d); 505 506 extern struct mutex rdtgroup_mutex; 507 508 extern struct rdt_resource rdt_resources_all[]; 509 extern struct rdtgroup rdtgroup_default; 510 DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key); 511 512 extern struct dentry *debugfs_resctrl; 513 514 enum { 515 RDT_RESOURCE_L3, 516 RDT_RESOURCE_L3DATA, 517 RDT_RESOURCE_L3CODE, 518 RDT_RESOURCE_L2, 519 RDT_RESOURCE_L2DATA, 520 RDT_RESOURCE_L2CODE, 521 RDT_RESOURCE_MBA, 522 523 /* Must be the last */ 524 RDT_NUM_RESOURCES, 525 }; 526 527 #define for_each_rdt_resource(r) \ 528 for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\ 529 r++) 530 531 #define for_each_capable_rdt_resource(r) \ 532 for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\ 533 r++) \ 534 if (r->alloc_capable || r->mon_capable) 535 536 #define for_each_alloc_capable_rdt_resource(r) \ 537 for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\ 538 r++) \ 539 if (r->alloc_capable) 540 541 #define for_each_mon_capable_rdt_resource(r) \ 542 for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\ 543 r++) \ 544 if (r->mon_capable) 545 546 #define for_each_alloc_enabled_rdt_resource(r) \ 547 for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\ 548 r++) \ 549 if (r->alloc_enabled) 550 551 #define for_each_mon_enabled_rdt_resource(r) \ 552 for (r = rdt_resources_all; r < rdt_resources_all + RDT_NUM_RESOURCES;\ 553 r++) \ 554 if (r->mon_enabled) 555 556 /* CPUID.(EAX=10H, ECX=ResID=1).EAX */ 557 union cpuid_0x10_1_eax { 558 struct { 559 unsigned int cbm_len:5; 560 } split; 561 unsigned int full; 562 }; 563 564 /* CPUID.(EAX=10H, ECX=ResID=3).EAX */ 565 union cpuid_0x10_3_eax { 566 struct { 567 unsigned int max_delay:12; 568 } split; 569 unsigned int full; 570 }; 571 572 /* CPUID.(EAX=10H, ECX=ResID).EDX */ 573 union cpuid_0x10_x_edx { 574 struct { 575 unsigned int cos_max:16; 576 } split; 577 unsigned int full; 578 }; 579 580 void rdt_last_cmd_clear(void); 581 void rdt_last_cmd_puts(const char *s); 582 __printf(1, 2) 583 void rdt_last_cmd_printf(const char *fmt, ...); 584 585 void rdt_ctrl_update(void *arg); 586 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn); 587 void rdtgroup_kn_unlock(struct kernfs_node *kn); 588 int rdtgroup_kn_mode_restrict(struct rdtgroup *r, const char *name); 589 int rdtgroup_kn_mode_restore(struct rdtgroup *r, const char *name, 590 umode_t mask); 591 struct rdt_domain *rdt_find_domain(struct rdt_resource *r, int id, 592 struct list_head **pos); 593 ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of, 594 char *buf, size_t nbytes, loff_t off); 595 int rdtgroup_schemata_show(struct kernfs_open_file *of, 596 struct seq_file *s, void *v); 597 bool rdtgroup_cbm_overlaps(struct rdt_resource *r, struct rdt_domain *d, 598 unsigned long cbm, int closid, bool exclusive); 599 unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r, struct rdt_domain *d, 600 unsigned long cbm); 601 enum rdtgrp_mode rdtgroup_mode_by_closid(int closid); 602 int rdtgroup_tasks_assigned(struct rdtgroup *r); 603 int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp); 604 int rdtgroup_locksetup_exit(struct rdtgroup *rdtgrp); 605 bool rdtgroup_cbm_overlaps_pseudo_locked(struct rdt_domain *d, unsigned long cbm); 606 bool rdtgroup_pseudo_locked_in_hierarchy(struct rdt_domain *d); 607 int rdt_pseudo_lock_init(void); 608 void rdt_pseudo_lock_release(void); 609 int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp); 610 void rdtgroup_pseudo_lock_remove(struct rdtgroup *rdtgrp); 611 struct rdt_domain *get_domain_from_cpu(int cpu, struct rdt_resource *r); 612 int update_domains(struct rdt_resource *r, int closid); 613 int closids_supported(void); 614 void closid_free(int closid); 615 int alloc_rmid(void); 616 void free_rmid(u32 rmid); 617 int rdt_get_mon_l3_config(struct rdt_resource *r); 618 void mon_event_count(void *info); 619 int rdtgroup_mondata_show(struct seq_file *m, void *arg); 620 void rmdir_mondata_subdir_allrdtgrp(struct rdt_resource *r, 621 unsigned int dom_id); 622 void mkdir_mondata_subdir_allrdtgrp(struct rdt_resource *r, 623 struct rdt_domain *d); 624 void mon_event_read(struct rmid_read *rr, struct rdt_resource *r, 625 struct rdt_domain *d, struct rdtgroup *rdtgrp, 626 int evtid, int first); 627 void mbm_setup_overflow_handler(struct rdt_domain *dom, 628 unsigned long delay_ms); 629 void mbm_handle_overflow(struct work_struct *work); 630 void __init intel_rdt_mbm_apply_quirk(void); 631 bool is_mba_sc(struct rdt_resource *r); 632 void setup_default_ctrlval(struct rdt_resource *r, u32 *dc, u32 *dm); 633 u32 delay_bw_map(unsigned long bw, struct rdt_resource *r); 634 void cqm_setup_limbo_handler(struct rdt_domain *dom, unsigned long delay_ms); 635 void cqm_handle_limbo(struct work_struct *work); 636 bool has_busy_rmid(struct rdt_resource *r, struct rdt_domain *d); 637 void __check_limbo(struct rdt_domain *d, bool force_free); 638 void rdt_domain_reconfigure_cdp(struct rdt_resource *r); 639 void __init thread_throttle_mode_init(void); 640 641 #endif /* _ASM_X86_RESCTRL_INTERNAL_H */ 642