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  +   €l–Ь4э( ©і( 	ЕЂfаB¦-яї„Л__†I|ҐЏ+ГВ ?ч     /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RESCTRL_H
#define _RESCTRL_H

#include <linux/cacheinfo.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/pid.h>
#include <linux/resctrl_types.h>

#ifdef CONFIG_ARCH_HAS_CPU_RESCTRL
#include <asm/resctrl.h>
#endif

/* CLOSID, RMID value used by the default control group */
#define RESCTRL_RESERVED_CLOSID		0
#define RESCTRL_RESERVED_RMID		0

#define RESCTRL_PICK_ANY_CPU		-1

#ifdef CONFIG_PROC_CPU_RESCTRL

int proc_resctrl_show(struct seq_file *m,
		      struct pid_namespace *ns,
		      struct pid *pid,
		      struct task_struct *tsk);

#endif

/* max value for struct rdt_domain's mbps_val */
#define MBA_MAX_MBPS   U32_MAX

/* Walk all possible resources, with variants for only controls or monitors. */
#define for_each_rdt_resource(_r)						\
	for ((_r) = resctrl_arch_get_resource(0);				\
	     (_r) && (_r)->rid < RDT_NUM_RESOURCES;				\
	     (_r) = resctrl_arch_get_resource((_r)->rid + 1))

#define for_each_capable_rdt_resource(r)				      \
	for_each_rdt_resource((r))					      \
		if ((r)->alloc_capable || (r)->mon_capable)

#define for_each_alloc_capable_rdt_resource(r)				      \
	for_each_rdt_resource((r))					      \
		if ((r)->alloc_capable)

#define for_each_mon_capable_rdt_resource(r)				      \
	for_each_rdt_resource((r))					      \
		if ((r)->mon_capable)

enum resctrl_res_level {
	RDT_RESOURCE_L3,
	RDT_RESOURCE_L2,
	RDT_RESOURCE_MBA,
	RDT_RESOURCE_SMBA,

	/* Must be the last */
	RDT_NUM_RESOURCES,
};

/**
 * enum resctrl_conf_type - The type of configuration.
 * @CDP_NONE:	No prioritisation, both code and data are controlled or monitored.
 * @CDP_CODE:	Configuration applies to instruction fetches.
 * @CDP_DATA:	Configuration applies to reads and writes.
 */
enum resctrl_conf_type {
	CDP_NONE,
	CDP_CODE,
	CDP_DATA,
};

#define CDP_NUM_TYPES	(CDP_DATA + 1)

/*
 * struct pseudo_lock_region - pseudo-lock region information
 * @s:			Resctrl schema for the resource to which this
 *			pseudo-locked region belongs
 * @closid:		The closid that this pseudo-locked region uses
 * @d:			RDT domain to which this pseudo-locked region
 *			belongs
 * @cbm:		bitmask of the pseudo-locked region
 * @lock_thread_wq:	waitqueue used to wait on the pseudo-locking thread
 *			completion
 * @thread_done:	variable used by waitqueue to test if pseudo-locking
 *			thread completed
 * @cpu:		core associated with the cache on which the setup code
 *			will be run
 * @line_size:		size of the cache lines
 * @size:		size of pseudo-locked region in bytes
 * @kmem:		the kernel memory associated with pseudo-locked region
 * @minor:		minor number of character device associated with this
 *			region
 * @debugfs_dir:	pointer to this region's directory in the debugfs
 *			filesystem
 * @pm_reqs:		Power management QoS requests related to this region
 */
struct pseudo_lock_region {
	struct resctrl_schema	*s;
	u32			closid;
	struct rdt_ctrl_domain	*d;
	u32			cbm;
	wait_queue_head_t	lock_thread_wq;
	int			thread_done;
	int			cpu;
	unsigned int		line_size;
	unsigned int		size;
	void			*kmem;
	unsigned int		minor;
	struct dentry		*debugfs_dir;
	struct list_head	pm_reqs;
};

/**
 * struct resctrl_staged_config - parsed configuration to be applied
 * @new_ctrl:		new ctrl value to be loaded
 * @have_new_ctrl:	whether the user provided new_ctrl is valid
 */
struct resctrl_staged_config {
	u32			new_ctrl;
	bool			have_new_ctrl;
};

enum resctrl_domain_type {
	RESCTRL_CTRL_DOMAIN,
	RESCTRL_MON_DOMAIN,
};

/**
 * struct rdt_domain_hdr - common header for different domain types
 * @list:		all instances of this resource
 * @id:			unique id for this instance
 * @type:		type of this instance
 * @cpu_mask:		which CPUs share this resource
 */
struct rdt_domain_hdr {
	struct list_head		list;
	int				id;
	enum resctrl_domain_type	type;
	struct cpumask			cpu_mask;
};

/**
 * struct rdt_ctrl_domain - group of CPUs sharing a resctrl control resource
 * @hdr:		common header for different domain types
 * @plr:		pseudo-locked region (if a