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     €ДГѓ®ВБА б    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_RATELIMIT_H
#define _LINUX_RATELIMIT_H

#include <linux/ratelimit_types.h>
#include <linux/sched.h>
#include <linux/spinlock.h>

static inline void ratelimit_state_init(struct ratelimit_state *rs,
					int interval, int burst)
{
	memset(rs, 0, sizeof(*rs));

	raw_spin_lock_init(&rs->lock);
	rs->interval	= interval;
	rs->burst	= burst;
}

static inline void ratelimit_default_init(struct ratelimit_state *rs)
{
	return ratelimit_state_init(rs, DEFAULT_RATELIMIT_INTERVAL,
					DEFAULT_RATELIMIT_BURST);
}

static inline void ratelimit_state_exit(struct ratelimit_state *rs)
{
	if (!(rs->flags & RATELIMIT_MSG_ON_RELEASE))
		return;

	if (rs->missed) {
		pr_warn("%s: %d output lines suppressed due to ratelimiting\n",
			current->comm, rs->missed);
		rs->missed = 0;
	}
}

static inline void
ratelimit_set_flags(struct ratelimit_state *rs, unsigned long flags)
{
	rs->flags = flags;
}

extern struct ratelimit_state printk_ratelimit_state;

#ifdef CONFIG_PRINTK

#define WARN_ON_RATELIMIT(condition, state)	({		\
	bool __rtn_cond = !!(condition);			\
	WARN_ON(__rtn_cond && __ratelimit(state));		\
	__rtn_cond;						\
})

#define WARN_RATELIMIT(condition, format, ...)			\
({								\
	static DEFINE_RATELIMIT_STATE(_rs,			\
				      DEFAULT_RATELIMIT_INTERVAL,	\
				      DEFAULT_RATELIMIT_BURST);	\
	int rtn = !!(condition);				\
								\
	if (unlikely(rtn && __ratelimit(&_rs)))			\
		WARN(rtn, format, ##__VA_ARGS__);		\
								\
	rtn;							\
})

#else

#define WARN_ON_RATELIMIT(condition, state)			\
	WARN_ON(condition)

#define WARN_RATELIMIT(condition, format, ...)			\
({								\
	int rtn = WARN(condition, format, ##__VA_ARGS__);	\
	rtn;							\
})

#endif

#endif /* _LINUX_RATELIMIT_H */
     	€ДГѓeж…ВБА     	/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_CONTEXT_TRACKING_STATE_H
#define _LINUX_CONTEXT_TRACKING_STATE_H

#include <linux/percpu.h>
#include <linux/static_key.h>
#include <linux/context_tracking_irq.h>

/* Offset to allow distinguishing irq vs. task-based idle entry/exit. */
#define CT_NESTING_IRQ_NONIDLE	((LONG_MAX / 2) + 1)

enum ctx_state {
	CT_STATE_DISABLED	= -1,	/* returned by ct_state() if unknown */
	CT_STATE_KERNEL		= 0,
	CT_STATE_IDLE		= 1,
	CT_STATE_USER		= 2,
	CT_STATE_GUEST		= 3,
	CT_STATE_MAX		= 4,
};

/* Odd value for watching, else even. */
#define CT_RCU_WATCHING CT_STATE_MAX

#define CT_STATE_MASK (CT_STATE_MAX - 1)
#define CT_RCU_WATCHING_MASK (~CT_STATE_MASK)

struct context_tracking {
#ifdef CONFIG_CONTEXT_TRACKING_USER
	/*
	 * When active is false, probes are unset in order
	 * to minimize overhead: TIF flags are cleared
	 * and calls to user_enter/exit are ignored. This
	 * may be further optimized using static keys.
	 */
	bool active;
	int recursion;
#endif
#ifdef CONFIG_CONTEXT_TRACKING
	atomic_t state;
#endif
#ifdef CONFIG_CONTEXT_TRACKING_IDLE
	long nesting;		/* Track process nesting level. */
	long nmi_nesting;	/* Track irq/NMI nesting level. */
#endif
};

#ifdef CONFIG_CONTEXT_TRACKING
DECLARE_PER_CPU(struct context_tracking, context_tracking);

static __always_inline int __ct_state(void)
{
	return arch_atomic_read(this_cpu_ptr(&context_tracking.state)) & CT_STATE_MASK;
}
#endif

#ifdef CONFIG_CONTEXT_TRACKING_IDLE
static __always_inline int ct_rcu_watching(void)
{
	return atomic_read(this_cpu_ptr(&context_tracking.state)) & CT_RCU_WATCHING_MASK;
}

static __always_inline int ct_rcu_watching_cpu(int cpu)
{
	struct context_tracking *ct = per_cpu_ptr(&context_tracking, cpu);

	return atomic_read(&ct->state) & CT_RCU_WATCHING_MASK;
}

static __always_inline int ct_rcu_watching_cpu_acquire(int cpu)
{
	struct context_tracking *ct = per_cpu_ptr(&context_tracking, cpu);

	return atomic_read_acquire(&ct->state) & CT_RCU_WATCHING_MASK;
}

static __always_inline long ct_nesting(void)
{
	return __this_cpu_read(context_tracking.nesting);
}

static __always_inline long ct_nesting_cpu(int cpu)
{
	struct context_tracking *ct = per_cpu_ptr(&context_tr