cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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i915_scheduler.h (2878B)

      1/*
      2 * SPDX-License-Identifier: MIT
      3 *
      4 * Copyright © 2018 Intel Corporation
      5 */
      6
      7#ifndef _I915_SCHEDULER_H_
      8#define _I915_SCHEDULER_H_
      9
     10#include <linux/bitops.h>
     11#include <linux/list.h>
     12#include <linux/kernel.h>
     13
     14#include "i915_scheduler_types.h"
     15
     16struct drm_printer;
     17
     18#define priolist_for_each_request(it, plist) \
     19	list_for_each_entry(it, &(plist)->requests, sched.link)
     20
     21#define priolist_for_each_request_consume(it, n, plist) \
     22	list_for_each_entry_safe(it, n, &(plist)->requests, sched.link)
     23
     24void i915_sched_node_init(struct i915_sched_node *node);
     25void i915_sched_node_reinit(struct i915_sched_node *node);
     26
     27bool __i915_sched_node_add_dependency(struct i915_sched_node *node,
     28				      struct i915_sched_node *signal,
     29				      struct i915_dependency *dep,
     30				      unsigned long flags);
     31
     32int i915_sched_node_add_dependency(struct i915_sched_node *node,
     33				   struct i915_sched_node *signal,
     34				   unsigned long flags);
     35
     36void i915_sched_node_fini(struct i915_sched_node *node);
     37
     38void i915_schedule(struct i915_request *request,
     39		   const struct i915_sched_attr *attr);
     40
     41struct list_head *
     42i915_sched_lookup_priolist(struct i915_sched_engine *sched_engine, int prio);
     43
     44void __i915_priolist_free(struct i915_priolist *p);
     45static inline void i915_priolist_free(struct i915_priolist *p)
     46{
     47	if (p->priority != I915_PRIORITY_NORMAL)
     48		__i915_priolist_free(p);
     49}
     50
     51struct i915_sched_engine *
     52i915_sched_engine_create(unsigned int subclass);
     53
     54static inline struct i915_sched_engine *
     55i915_sched_engine_get(struct i915_sched_engine *sched_engine)
     56{
     57	kref_get(&sched_engine->ref);
     58	return sched_engine;
     59}
     60
     61static inline void
     62i915_sched_engine_put(struct i915_sched_engine *sched_engine)
     63{
     64	kref_put(&sched_engine->ref, sched_engine->destroy);
     65}
     66
     67static inline bool
     68i915_sched_engine_is_empty(struct i915_sched_engine *sched_engine)
     69{
     70	return RB_EMPTY_ROOT(&sched_engine->queue.rb_root);
     71}
     72
     73static inline void
     74i915_sched_engine_reset_on_empty(struct i915_sched_engine *sched_engine)
     75{
     76	if (i915_sched_engine_is_empty(sched_engine))
     77		sched_engine->no_priolist = false;
     78}
     79
     80static inline void
     81i915_sched_engine_active_lock_bh(struct i915_sched_engine *sched_engine)
     82{
     83	local_bh_disable(); /* prevent local softirq and lock recursion */
     84	tasklet_lock(&sched_engine->tasklet);
     85}
     86
     87static inline void
     88i915_sched_engine_active_unlock_bh(struct i915_sched_engine *sched_engine)
     89{
     90	tasklet_unlock(&sched_engine->tasklet);
     91	local_bh_enable(); /* restore softirq, and kick ksoftirqd! */
     92}
     93
     94void i915_request_show_with_schedule(struct drm_printer *m,
     95				     const struct i915_request *rq,
     96				     const char *prefix,
     97				     int indent);
     98
     99static inline bool
    100i915_sched_engine_disabled(struct i915_sched_engine *sched_engine)
    101{
    102	return sched_engine->disabled(sched_engine);
    103}
    104
    105void i915_scheduler_module_exit(void);
    106int i915_scheduler_module_init(void);
    107
    108#endif /* _I915_SCHEDULER_H_ */