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/resctrl.h>
6 #include <linux/sched.h>
7 #include <linux/kernfs.h>
8 #include <linux/fs_context.h>
9 #include <linux/jump_label.h>
10 #include <linux/tick.h>
11
12 #include <asm/resctrl.h>
13
14 #define L3_QOS_CDP_ENABLE 0x01ULL
15
16 #define L2_QOS_CDP_ENABLE 0x01ULL
17
18 #define CQM_LIMBOCHECK_INTERVAL 1000
19
20 #define MBM_CNTR_WIDTH_BASE 24
21 #define MBM_OVERFLOW_INTERVAL 1000
22 #define MAX_MBA_BW 100u
23 #define MBA_IS_LINEAR 0x4
24 #define MBM_CNTR_WIDTH_OFFSET_AMD 20
25
26 #define RMID_VAL_ERROR BIT_ULL(63)
27 #define RMID_VAL_UNAVAIL BIT_ULL(62)
28 /*
29 * With the above fields in use 62 bits remain in MSR_IA32_QM_CTR for
30 * data to be returned. The counter width is discovered from the hardware
31 * as an offset from MBM_CNTR_WIDTH_BASE.
32 */
33 #define MBM_CNTR_WIDTH_OFFSET_MAX (62 - MBM_CNTR_WIDTH_BASE)
34
35 /* Reads to Local DRAM Memory */
36 #define READS_TO_LOCAL_MEM BIT(0)
37
38 /* Reads to Remote DRAM Memory */
39 #define READS_TO_REMOTE_MEM BIT(1)
40
41 /* Non-Temporal Writes to Local Memory */
42 #define NON_TEMP_WRITE_TO_LOCAL_MEM BIT(2)
43
44 /* Non-Temporal Writes to Remote Memory */
45 #define NON_TEMP_WRITE_TO_REMOTE_MEM BIT(3)
46
47 /* Reads to Local Memory the system identifies as "Slow Memory" */
48 #define READS_TO_LOCAL_S_MEM BIT(4)
49
50 /* Reads to Remote Memory the system identifies as "Slow Memory" */
51 #define READS_TO_REMOTE_S_MEM BIT(5)
52
53 /* Dirty Victims to All Types of Memory */
54 #define DIRTY_VICTIMS_TO_ALL_MEM BIT(6)
55
56 /* Max event bits supported */
57 #define MAX_EVT_CONFIG_BITS GENMASK(6, 0)
58
59 /**
60 * cpumask_any_housekeeping() - Choose any CPU in @mask, preferring those that
61 * aren't marked nohz_full
62 * @mask: The mask to pick a CPU from.
63 * @exclude_cpu:The CPU to avoid picking.
64 *
65 * Returns a CPU from @mask, but not @exclude_cpu. If there are housekeeping
66 * CPUs that don't use nohz_full, these are preferred. Pass
67 * RESCTRL_PICK_ANY_CPU to avoid excluding any CPUs.
68 *
69 * When a CPU is excluded, returns >= nr_cpu_ids if no CPUs are available.
70 */
71 static inline unsigned int
72 cpumask_any_housekeeping(const struct cpumask *mask, int exclude_cpu)
73 {
74 unsigned int cpu, hk_cpu;
75
76 if (exclude_cpu == RESCTRL_PICK_ANY_CPU)
77 cpu = cpumask_any(mask);
78 else
79 cpu = cpumask_any_but(mask, exclude_cpu);
80
81 /* Only continue if tick_nohz_full_mask has been initialized. */
82 if (!tick_nohz_full_enabled())
83 return cpu;
84
85 /* If the CPU picked isn't marked nohz_full nothing more needs doing. */
86 if (cpu < nr_cpu_ids && !tick_nohz_full_cpu(cpu))
87 return cpu;
88
89 /* Try to find a CPU that isn't nohz_full to use in preference */
90 hk_cpu = cpumask_nth_andnot(0, mask, tick_nohz_full_mask);
91 if (hk_cpu == exclude_cpu)
92 hk_cpu = cpumask_nth_andnot(1, mask, tick_nohz_full_mask);
93
94 if (hk_cpu < nr_cpu_ids)
95 cpu = hk_cpu;
96
97 return cpu;
98 }
99
100 struct rdt_fs_context {
101 struct kernfs_fs_context kfc;
102 bool enable_cdpl2;
103 bool enable_cdpl3;
104 bool enable_mba_mbps;
105 bool enable_debug;
106 };
107
108 static inline struct rdt_fs_context *rdt_fc2context(struct fs_context *fc)
109 {
110 struct kernfs_fs_context *kfc = fc->fs_private;
111
112 return container_of(kfc, struct rdt_fs_context, kfc);
113 }
114
115 /**
116 * struct mon_evt - Entry in the event list of a resource
117 * @evtid: event id
118 * @name: name of the event
119 * @configurable: true if the event is configurable
120 * @list: entry in &rdt_resource->evt_list
121 */
122 struct mon_evt {
123 enum resctrl_event_id evtid;
124 char *name;
125 bool configurable;
126 struct list_head list;
127 };
128
129 /**
130 * union mon_data_bits - Monitoring details for each event file.
131 * @priv: Used to store monitoring event data in @u
132 * as kernfs private data.
133 * @u.rid: Resource id associated with the event file.
134 * @u.evtid: Event id associated with the event file.
135 * @u.sum: Set when event must be summed across multiple
136 * domains.
137 * @u.domid: When @u.sum is zero this is the domain to which
138 * the event file belongs. When @sum is one this
139 * is the id of the L3 cache that all domains to be
140 * summed share.
141 * @u: Name of the bit fields struct.
142 */
143 union mon_data_bits {
144 void *priv;
145 struct {
146 unsigned int rid : 10;
147 enum resctrl_event_id evtid : 7;
148 unsigned int sum : 1;
149 unsigned int domid : 14;
150 } u;
151 };
152
153 /**
154 * struct rmid_read - Data passed across smp_call*() to read event count.
155 * @rgrp: Resource group for which the counter is being read. If it is a parent
156 * resource group then its event count is summed with the count from all
157 * its child resource groups.
158 * @r: Resource describing the properties of the event being read.
159 * @d: Domain that the counter should be read from. If NULL then sum all
160 * domains in @r sharing L3 @ci.id
161 * @evtid: Which monitor event to read.
162 * @first: Initialize MBM counter when true.
163 * @ci: Cacheinfo for L3. Only set when @d is NULL. Used when summing domains.
164 * @err: Error encountered when reading counter.
165 * @val: Returned value of event counter. If @rgrp is a parent resource group,
166 * @val includes the sum of event counts from its child resource groups.
167 * If @d is NULL, @val includes the sum of all domains in @r sharing @ci.id,
168 * (summed across child resource groups if @rgrp is a parent resource group).
169 * @arch_mon_ctx: Hardware monitor allocated for this read request (MPAM only).
170 */
171 struct rmid_read {
172 struct rdtgroup *rgrp;
173 struct rdt_resource *r;
174 struct rdt_mon_domain *d;
175 enum resctrl_event_id evtid;
176 bool first;
177 struct cacheinfo *ci;
178 int err;
179 u64 val;
180 void *arch_mon_ctx;
181 };
182
183 extern unsigned int rdt_mon_features;
184 extern struct list_head resctrl_schema_all;
185 extern bool resctrl_mounted;
186
187 enum rdt_group_type {
188 RDTCTRL_GROUP = 0,
189 RDTMON_GROUP,
190 RDT_NUM_GROUP,
191 };
192
193 /**
194 * enum rdtgrp_mode - Mode of a RDT resource group
195 * @RDT_MODE_SHAREABLE: This resource group allows sharing of its allocations
196 * @RDT_MODE_EXCLUSIVE: No sharing of this resource group's allocations allowed
197 * @RDT_MODE_PSEUDO_LOCKSETUP: Resource group will be used for Pseudo-Locking
198 * @RDT_MODE_PSEUDO_LOCKED: No sharing of this resource group's allocations
199 * allowed AND the allocations are Cache Pseudo-Locked
200 * @RDT_NUM_MODES: Total number of modes
201 *
202 * The mode of a resource group enables control over the allowed overlap
203 * between allocations associated with different resource groups (classes
204 * of service). User is able to modify the mode of a resource group by
205 * writing to the "mode" resctrl file associated with the resource group.
206 *
207 * The "shareable", "exclusive", and "pseudo-locksetup" modes are set by
208 * writing the appropriate text to the "mode" file. A resource group enters
209 * "pseudo-locked" mode after the schemata is written while the resource
210 * group is in "pseudo-locksetup" mode.
211 */
212 enum rdtgrp_mode {
213 RDT_MODE_SHAREABLE = 0,
214 RDT_MODE_EXCLUSIVE,
215 RDT_MODE_PSEUDO_LOCKSETUP,
216 RDT_MODE_PSEUDO_LOCKED,
217
218 /* Must be last */
219 RDT_NUM_MODES,
220 };
221
222 /**
223 * struct mongroup - store mon group's data in resctrl fs.
224 * @mon_data_kn: kernfs node for the mon_data directory
225 * @parent: parent rdtgrp
226 * @crdtgrp_list: child rdtgroup node list
227 * @rmid: rmid for this rdtgroup
228 */
229 struct mongroup {
230 struct kernfs_node *mon_data_kn;
231 struct rdtgroup *parent;
232 struct list_head crdtgrp_list;
233 u32 rmid;
234 };
235
236 /**
237 * struct pseudo_lock_region - pseudo-lock region information
238 * @s: Resctrl schema for the resource to which this
239 * pseudo-locked region belongs
240 * @d: RDT domain to which this pseudo-locked region
241 * belongs
242 * @cbm: bitmask of the pseudo-locked region
243 * @lock_thread_wq: waitqueue used to wait on the pseudo-locking thread
244 * completion
245 * @thread_done: variable used by waitqueue to test if pseudo-locking
246 * thread completed
247 * @cpu: core associated with the cache on which the setup code
248 * will be run
249 * @line_size: size of the cache lines
250 * @size: size of pseudo-locked region in bytes
251 * @kmem: the kernel memory associated with pseudo-locked region
252 * @minor: minor number of character device associated with this
253 * region
254 * @debugfs_dir: pointer to this region's directory in the debugfs
255 * filesystem
256 * @pm_reqs: Power management QoS requests related to this region
257 */
258 struct pseudo_lock_region {
259 struct resctrl_schema *s;
260 struct rdt_ctrl_domain *d;
261 u32 cbm;
262 wait_queue_head_t lock_thread_wq;
263 int thread_done;
264 int cpu;
265 unsigned int line_size;
266 unsigned int size;
267 void *kmem;
268 unsigned int minor;
269 struct dentry *debugfs_dir;
270 struct list_head pm_reqs;
271 };
272
273 /**
274 * struct rdtgroup - store rdtgroup's data in resctrl file system.
275 * @kn: kernfs node
276 * @rdtgroup_list: linked list for all rdtgroups
277 * @closid: closid for this rdtgroup
278 * @cpu_mask: CPUs assigned to this rdtgroup
279 * @flags: status bits
280 * @waitcount: how many cpus expect to find this
281 * group when they acquire rdtgroup_mutex
282 * @type: indicates type of this rdtgroup - either
283 * monitor only or ctrl_mon group
284 * @mon: mongroup related data
285 * @mode: mode of resource group
286 * @plr: pseudo-locked region
287 */
288 struct rdtgroup {
289 struct kernfs_node *kn;
290 struct list_head rdtgroup_list;
291 u32 closid;
292 struct cpumask cpu_mask;
293 int flags;
294 atomic_t waitcount;
295 enum rdt_group_type type;
296 struct mongroup mon;
297 enum rdtgrp_mode mode;
298 struct pseudo_lock_region *plr;
299 };
300
301 /* rdtgroup.flags */
302 #define RDT_DELETED 1
303
304 /* rftype.flags */
305 #define RFTYPE_FLAGS_CPUS_LIST 1
306
307 /*
308 * Define the file type flags for base and info directories.
309 */
310 #define RFTYPE_INFO BIT(0)
311 #define RFTYPE_BASE BIT(1)
312 #define RFTYPE_CTRL BIT(4)
313 #define RFTYPE_MON BIT(5)
314 #define RFTYPE_TOP BIT(6)
315 #define RFTYPE_RES_CACHE BIT(8)
316 #define RFTYPE_RES_MB BIT(9)
317 #define RFTYPE_DEBUG BIT(10)
318 #define RFTYPE_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL)
319 #define RFTYPE_MON_INFO (RFTYPE_INFO | RFTYPE_MON)
320 #define RFTYPE_TOP_INFO (RFTYPE_INFO | RFTYPE_TOP)
321 #define RFTYPE_CTRL_BASE (RFTYPE_BASE | RFTYPE_CTRL)
322 #define RFTYPE_MON_BASE (RFTYPE_BASE | RFTYPE_MON)
323
324 /* List of all resource groups */
325 extern struct list_head rdt_all_groups;
326
327 extern int max_name_width, max_data_width;
328
329 int __init rdtgroup_init(void);
330 void __exit rdtgroup_exit(void);
331
332 /**
333 * struct rftype - describe each file in the resctrl file system
334 * @name: File name
335 * @mode: Access mode
336 * @kf_ops: File operations
337 * @flags: File specific RFTYPE_FLAGS_* flags
338 * @fflags: File specific RFTYPE_* flags
339 * @seq_show: Show content of the file
340 * @write: Write to the file
341 */
342 struct rftype {
343 char *name;
344 umode_t mode;
345 const struct kernfs_ops *kf_ops;
346 unsigned long flags;
347 unsigned long fflags;
348
349 int (*seq_show)(struct kernfs_open_file *of,
350 struct seq_file *sf, void *v);
351 /*
352 * write() is the generic write callback which maps directly to
353 * kernfs write operation and overrides all other operations.
354 * Maximum write size is determined by ->max_write_len.
355 */
356 ssize_t (*write)(struct kernfs_open_file *of,
357 char *buf, size_t nbytes, loff_t off);
358 };
359
360 /**
361 * struct mbm_state - status for each MBM counter in each domain
362 * @prev_bw_bytes: Previous bytes value read for bandwidth calculation
363 * @prev_bw: The most recent bandwidth in MBps
364 */
365 struct mbm_state {
366 u64 prev_bw_bytes;
367 u32 prev_bw;
368 };
369
370 /**
371 * struct arch_mbm_state - values used to compute resctrl_arch_rmid_read()s
372 * return value.
373 * @chunks: Total data moved (multiply by rdt_group.mon_scale to get bytes)
374 * @prev_msr: Value of IA32_QM_CTR last time it was read for the RMID used to
375 * find this struct.
376 */
377 struct arch_mbm_state {
378 u64 chunks;
379 u64 prev_msr;
380 };
381
382 /**
383 * struct rdt_hw_ctrl_domain - Arch private attributes of a set of CPUs that share
384 * a resource for a control function
385 * @d_resctrl: Properties exposed to the resctrl file system
386 * @ctrl_val: array of cache or mem ctrl values (indexed by CLOSID)
387 *
388 * Members of this structure are accessed via helpers that provide abstraction.
389 */
390 struct rdt_hw_ctrl_domain {
391 struct rdt_ctrl_domain d_resctrl;
392 u32 *ctrl_val;
393 };
394
395 /**
396 * struct rdt_hw_mon_domain - Arch private attributes of a set of CPUs that share
397 * a resource for a monitor function
398 * @d_resctrl: Properties exposed to the resctrl file system
399 * @arch_mbm_total: arch private state for MBM total bandwidth
400 * @arch_mbm_local: arch private state for MBM local bandwidth
401 *
402 * Members of this structure are accessed via helpers that provide abstraction.
403 */
404 struct rdt_hw_mon_domain {
405 struct rdt_mon_domain d_resctrl;
406 struct arch_mbm_state *arch_mbm_total;
407 struct arch_mbm_state *arch_mbm_local;
408 };
409
410 static inline struct rdt_hw_ctrl_domain *resctrl_to_arch_ctrl_dom(struct rdt_ctrl_domain *r)
411 {
412 return container_of(r, struct rdt_hw_ctrl_domain, d_resctrl);
413 }
414
415 static inline struct rdt_hw_mon_domain *resctrl_to_arch_mon_dom(struct rdt_mon_domain *r)
416 {
417 return container_of(r, struct rdt_hw_mon_domain, d_resctrl);
418 }
419
420 /**
421 * struct msr_param - set a range of MSRs from a domain
422 * @res: The resource to use
423 * @dom: The domain to update
424 * @low: Beginning index from base MSR
425 * @high: End index
426 */
427 struct msr_param {
428 struct rdt_resource *res;
429 struct rdt_ctrl_domain *dom;
430 u32 low;
431 u32 high;
432 };
433
434 static inline bool is_llc_occupancy_enabled(void)
435 {
436 return (rdt_mon_features & (1 << QOS_L3_OCCUP_EVENT_ID));
437 }
438
439 static inline bool is_mbm_total_enabled(void)
440 {
441 return (rdt_mon_features & (1 << QOS_L3_MBM_TOTAL_EVENT_ID));
442 }
443
444 static inline bool is_mbm_local_enabled(void)
445 {
446 return (rdt_mon_features & (1 << QOS_L3_MBM_LOCAL_EVENT_ID));
447 }
448
449 static inline bool is_mbm_enabled(void)
450 {
451 return (is_mbm_total_enabled() || is_mbm_local_enabled());
452 }
453
454 static inline bool is_mbm_event(int e)
455 {
456 return (e >= QOS_L3_MBM_TOTAL_EVENT_ID &&
457 e <= QOS_L3_MBM_LOCAL_EVENT_ID);
458 }
459
460 struct rdt_parse_data {
461 struct rdtgroup *rdtgrp;
462 char *buf;
463 };
464
465 /**
466 * struct rdt_hw_resource - arch private attributes of a resctrl resource
467 * @r_resctrl: Attributes of the resource used directly by resctrl.
468 * @num_closid: Maximum number of closid this hardware can support,
469 * regardless of CDP. This is exposed via
470 * resctrl_arch_get_num_closid() to avoid confusion
471 * with struct resctrl_schema's property of the same name,
472 * which has been corrected for features like CDP.
473 * @msr_base: Base MSR address for CBMs
474 * @msr_update: Function pointer to update QOS MSRs
475 * @mon_scale: cqm counter * mon_scale = occupancy in bytes
476 * @mbm_width: Monitor width, to detect and correct for overflow.
477 * @mbm_cfg_mask: Bandwidth sources that can be tracked when Bandwidth
478 * Monitoring Event Configuration (BMEC) is supported.
479 * @cdp_enabled: CDP state of this resource
480 *
481 * Members of this structure are either private to the architecture
482 * e.g. mbm_width, or accessed via helpers that provide abstraction. e.g.
483 * msr_update and msr_base.
484 */
485 struct rdt_hw_resource {
486 struct rdt_resource r_resctrl;
487 u32 num_closid;
488 unsigned int msr_base;
489 void (*msr_update)(struct msr_param *m);
490 unsigned int mon_scale;
491 unsigned int mbm_width;
492 unsigned int mbm_cfg_mask;
493 bool cdp_enabled;
494 };
495
496 static inline struct rdt_hw_resource *resctrl_to_arch_res(struct rdt_resource *r)
497 {
498 return container_of(r, struct rdt_hw_resource, r_resctrl);
499 }
500
501 int parse_cbm(struct rdt_parse_data *data, struct resctrl_schema *s,
502 struct rdt_ctrl_domain *d);
503 int parse_bw(struct rdt_parse_data *data, struct resctrl_schema *s,
504 struct rdt_ctrl_domain *d);
505
506 extern struct mutex rdtgroup_mutex;
507
508 extern struct rdt_hw_resource rdt_resources_all[];
509 extern struct rdtgroup rdtgroup_default;
510 extern struct dentry *debugfs_resctrl;
511
512 enum resctrl_res_level {
513 RDT_RESOURCE_L3,
514 RDT_RESOURCE_L2,
515 RDT_RESOURCE_MBA,
516 RDT_RESOURCE_SMBA,
517
518 /* Must be the last */
519 RDT_NUM_RESOURCES,
520 };
521
522 static inline struct rdt_resource *resctrl_inc(struct rdt_resource *res)
523 {
524 struct rdt_hw_resource *hw_res = resctrl_to_arch_res(res);
525
526 hw_res++;
527 return &hw_res->r_resctrl;
528 }
529
530 static inline bool resctrl_arch_get_cdp_enabled(enum resctrl_res_level l)
531 {
532 return rdt_resources_all[l].cdp_enabled;
533 }
534
535 int resctrl_arch_set_cdp_enabled(enum resctrl_res_level l, bool enable);
536
537 void arch_mon_domain_online(struct rdt_resource *r, struct rdt_mon_domain *d);
538
539 /*
540 * To return the common struct rdt_resource, which is contained in struct
541 * rdt_hw_resource, walk the resctrl member of struct rdt_hw_resource.
542 */
543 #define for_each_rdt_resource(r) \
544 for (r = &rdt_resources_all[0].r_resctrl; \
545 r <= &rdt_resources_all[RDT_NUM_RESOURCES - 1].r_resctrl; \
546 r = resctrl_inc(r))
547
548 #define for_each_capable_rdt_resource(r) \
549 for_each_rdt_resource(r) \
550 if (r->alloc_capable || r->mon_capable)
551
552 #define for_each_alloc_capable_rdt_resource(r) \
553 for_each_rdt_resource(r) \
554 if (r->alloc_capable)
555
556 #define for_each_mon_capable_rdt_resource(r) \
557 for_each_rdt_resource(r) \
558 if (r->mon_capable)
559
560 /* CPUID.(EAX=10H, ECX=ResID=1).EAX */
561 union cpuid_0x10_1_eax {
562 struct {
563 unsigned int cbm_len:5;
564 } split;
565 unsigned int full;
566 };
567
568 /* CPUID.(EAX=10H, ECX=ResID=3).EAX */
569 union cpuid_0x10_3_eax {
570 struct {
571 unsigned int max_delay:12;
572 } split;
573 unsigned int full;
574 };
575
576 /* CPUID.(EAX=10H, ECX=ResID).ECX */
577 union cpuid_0x10_x_ecx {
578 struct {
579 unsigned int reserved:3;
580 unsigned int noncont:1;
581 } split;
582 unsigned int full;
583 };
584
585 /* CPUID.(EAX=10H, ECX=ResID).EDX */
586 union cpuid_0x10_x_edx {
587 struct {
588 unsigned int cos_max:16;
589 } split;
590 unsigned int full;
591 };
592
593 void rdt_last_cmd_clear(void);
594 void rdt_last_cmd_puts(const char *s);
595 __printf(1, 2)
596 void rdt_last_cmd_printf(const char *fmt, ...);
597
598 void rdt_ctrl_update(void *arg);
599 struct rdtgroup *rdtgroup_kn_lock_live(struct kernfs_node *kn);
600 void rdtgroup_kn_unlock(struct kernfs_node *kn);
601 int rdtgroup_kn_mode_restrict(struct rdtgroup *r, const char *name);
602 int rdtgroup_kn_mode_restore(struct rdtgroup *r, const char *name,
603 umode_t mask);
604 struct rdt_domain_hdr *rdt_find_domain(struct list_head *h, int id,
605 struct list_head **pos);
606 ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
607 char *buf, size_t nbytes, loff_t off);
608 int rdtgroup_schemata_show(struct kernfs_open_file *of,
609 struct seq_file *s, void *v);
610 bool rdtgroup_cbm_overlaps(struct resctrl_schema *s, struct rdt_ctrl_domain *d,
611 unsigned long cbm, int closid, bool exclusive);
612 unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r, struct rdt_ctrl_domain *d,
613 unsigned long cbm);
614 enum rdtgrp_mode rdtgroup_mode_by_closid(int closid);
615 int rdtgroup_tasks_assigned(struct rdtgroup *r);
616 int rdtgroup_locksetup_enter(struct rdtgroup *rdtgrp);
617 int rdtgroup_locksetup_exit(struct rdtgroup *rdtgrp);
618 bool rdtgroup_cbm_overlaps_pseudo_locked(struct rdt_ctrl_domain *d, unsigned long cbm);
619 bool rdtgroup_pseudo_locked_in_hierarchy(struct rdt_ctrl_domain *d);
620 int rdt_pseudo_lock_init(void);
621 void rdt_pseudo_lock_release(void);
622 int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp);
623 void rdtgroup_pseudo_lock_remove(struct rdtgroup *rdtgrp);
624 struct rdt_ctrl_domain *get_ctrl_domain_from_cpu(int cpu, struct rdt_resource *r);
625 struct rdt_mon_domain *get_mon_domain_from_cpu(int cpu, struct rdt_resource *r);
626 int closids_supported(void);
627 void closid_free(int closid);
628 int alloc_rmid(u32 closid);
629 void free_rmid(u32 closid, u32 rmid);
630 int rdt_get_mon_l3_config(struct rdt_resource *r);
631 void __exit rdt_put_mon_l3_config(void);
632 bool __init rdt_cpu_has(int flag);
633 void mon_event_count(void *info);
634 int rdtgroup_mondata_show(struct seq_file *m, void *arg);
635 void mon_event_read(struct rmid_read *rr, struct rdt_resource *r,
636 struct rdt_mon_domain *d, struct rdtgroup *rdtgrp,
637 cpumask_t *cpumask, int evtid, int first);
638 void mbm_setup_overflow_handler(struct rdt_mon_domain *dom,
639 unsigned long delay_ms,
640 int exclude_cpu);
641 void mbm_handle_overflow(struct work_struct *work);
642 void __init intel_rdt_mbm_apply_quirk(void);
643 bool is_mba_sc(struct rdt_resource *r);
644 void cqm_setup_limbo_handler(struct rdt_mon_domain *dom, unsigned long delay_ms,
645 int exclude_cpu);
646 void cqm_handle_limbo(struct work_struct *work);
647 bool has_busy_rmid(struct rdt_mon_domain *d);
648 void __check_limbo(struct rdt_mon_domain *d, bool force_free);
649 void rdt_domain_reconfigure_cdp(struct rdt_resource *r);
650 void __init thread_throttle_mode_init(void);
651 void __init mbm_config_rftype_init(const char *config);
652 void rdt_staged_configs_clear(void);
653 bool closid_allocated(unsigned int closid);
654 int resctrl_find_cleanest_closid(void);
655
656 #endif /* _ASM_X86_RESCTRL_INTERNAL_H */
657
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