include/linux/nmi.h - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  linux/include/linux/nmi.h
  */
 #ifndef LINUX_NMI_H
 #define LINUX_NMI_H

 #include <linux/sched.h>
 #include <asm/irq.h>
 #if defined(CONFIG_HAVE_NMI_WATCHDOG)
 #include <asm/nmi.h>
 #endif

 #ifdef CONFIG_SEC_DEBUG
 #define TASK_COMM_LEN 16
 #define SOFTIRQ_TYPE_LEN 16

 enum hardlockup_type {
 	HL_TASK_STUCK = 1,
 	HL_IRQ_STUCK,
 	HL_IDLE_STUCK,
 	HL_SMC_CALL_STUCK,
 	HL_IRQ_STORM,
 	HL_HRTIMER_ERROR,
 	HL_UNKNOWN_STUCK
 };

 struct task_info {
 	char task_comm[TASK_COMM_LEN];
 };

 struct cpuidle_info {
 	char *mode;
 };

 struct smc_info {
 	int cmd;
 };

 struct irq_info {
 	int irq;
 	void *fn;
 	unsigned long long avg_period;
 };

 struct hardlockup_info {
 	enum hardlockup_type hl_type;
 	unsigned long long delay_time;
 	union {
 		struct task_info task_info;
 		struct cpuidle_info cpuidle_info;
 		struct smc_info smc_info;
 		struct irq_info irq_info;
 	};
 };

 struct softirq_info {
 	ktime_t last_arrival;
 	char softirq_type[SOFTIRQ_TYPE_LEN];
 	void *fn;
 };

 enum softlockup_type {
 	SL_SOFTIRQ_STUCK = 1,
 	SL_TASK_STUCK,
 	SL_UNKNOWN_STUCK
 };

 struct softlockup_info {
 	enum softlockup_type sl_type;
 	unsigned long long delay_time;
 	int preempt_count;
 	union {
 		struct softirq_info softirq_info;
 		struct task_info task_info;
 	};
 };
 #endif

 #ifdef CONFIG_LOCKUP_DETECTOR
 void lockup_detector_init(void);
 void lockup_detector_soft_poweroff(void);
 void lockup_detector_cleanup(void);
 bool is_hardlockup(void);

 extern int watchdog_user_enabled;
 extern int nmi_watchdog_user_enabled;
 extern int soft_watchdog_user_enabled;
 extern int watchdog_thresh;
 extern unsigned long watchdog_enabled;

 extern struct cpumask watchdog_cpumask;
 extern unsigned long *watchdog_cpumask_bits;
 #ifdef CONFIG_SMP
 extern int sysctl_softlockup_all_cpu_backtrace;
 extern int sysctl_hardlockup_all_cpu_backtrace;
 #else
 #define sysctl_softlockup_all_cpu_backtrace 0
 #define sysctl_hardlockup_all_cpu_backtrace 0
 #endif /* !CONFIG_SMP */

 #else /* CONFIG_LOCKUP_DETECTOR */
 static inline void lockup_detector_init(void) { }
 static inline void lockup_detector_soft_poweroff(void) { }
 static inline void lockup_detector_cleanup(void) { }
 #endif /* !CONFIG_LOCKUP_DETECTOR */

 #ifdef CONFIG_SOFTLOCKUP_DETECTOR
 extern void touch_softlockup_watchdog_sched(void);
 extern void touch_softlockup_watchdog(void);
 extern void touch_softlockup_watchdog_sync(void);
 extern void touch_all_softlockup_watchdogs(void);
 extern unsigned int  softlockup_panic;
 #else
 static inline void touch_softlockup_watchdog_sched(void) { }
 static inline void touch_softlockup_watchdog(void) { }
 static inline void touch_softlockup_watchdog_sync(void) { }
 static inline void touch_all_softlockup_watchdogs(void) { }
 #endif

 #if defined(CONFIG_SEC_DEBUG) && defined(CONFIG_SOFTLOCKUP_DETECTOR)
 extern void sl_softirq_entry(const char *, void *);
 extern void sl_softirq_exit(void);
 unsigned long long get_dss_softlockup_thresh(void);
 #else
 static inline void void sl_softirq_entry(const char *, void *) { }
 static inline void sl_softirq_exit(void) { }
 #endif

 #ifdef CONFIG_DETECT_HUNG_TASK
 void reset_hung_task_detector(void);
 #else
 static inline void reset_hung_task_detector(void) { }
 #endif

 /*
  * The run state of the lockup detectors is controlled by the content of the
  * 'watchdog_enabled' variable. Each lockup detector has its dedicated bit -
  * bit 0 for the hard lockup detector and bit 1 for the soft lockup detector.
  *
  * 'watchdog_user_enabled', 'nmi_watchdog_user_enabled' and
  * 'soft_watchdog_user_enabled' are variables that are only used as an
  * 'interface' between the parameters in /proc/sys/kernel and the internal
  * state bits in 'watchdog_enabled'. The 'watchdog_thresh' variable is
  * handled differently because its value is not boolean, and the lockup
  * detectors are 'suspended' while 'watchdog_thresh' is equal zero.
  */
 #define NMI_WATCHDOG_ENABLED_BIT   0
 #define SOFT_WATCHDOG_ENABLED_BIT  1
 #define NMI_WATCHDOG_ENABLED      (1 << NMI_WATCHDOG_ENABLED_BIT)
 #define SOFT_WATCHDOG_ENABLED     (1 << SOFT_WATCHDOG_ENABLED_BIT)

 #if defined(CONFIG_HARDLOCKUP_DETECTOR) || defined(CONFIG_HARDLOCKUP_DETECTOR_OTHER_CPU)
 extern void hardlockup_detector_disable(void);
 extern unsigned int hardlockup_panic;
 #else
 static inline void hardlockup_detector_disable(void) {}
 #endif

 #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
 # define NMI_WATCHDOG_SYSCTL_PERM	0644
 #else
 # define NMI_WATCHDOG_SYSCTL_PERM	0444
 #endif

 #if defined(CONFIG_HARDLOCKUP_DETECTOR_PERF)
 extern void arch_touch_nmi_watchdog(void);
 extern void hardlockup_detector_perf_stop(void);
 extern void hardlockup_detector_perf_restart(void);
 extern void hardlockup_detector_perf_disable(void);
 extern void hardlockup_detector_perf_enable(void);
 extern void hardlockup_detector_perf_cleanup(void);
 extern int hardlockup_detector_perf_init(void);
 #else
 static inline void hardlockup_detector_perf_stop(void) { }
 static inline void hardlockup_detector_perf_restart(void) { }
 static inline void hardlockup_detector_perf_disable(void) { }
 static inline void hardlockup_detector_perf_enable(void) { }
 static inline void hardlockup_detector_perf_cleanup(void) { }
 # if !defined(CONFIG_HAVE_NMI_WATCHDOG)
 static inline int hardlockup_detector_perf_init(void) { return -ENODEV; }
 static inline void arch_touch_nmi_watchdog(void) {}
 # else
 static inline int hardlockup_detector_perf_init(void) { return 0; }
 # endif
 #endif

 void watchdog_nmi_stop(void);
 void watchdog_nmi_start(void);
 int watchdog_nmi_probe(void);
 int watchdog_nmi_enable(unsigned int cpu);
 void watchdog_nmi_disable(unsigned int cpu);

 /**
  * touch_nmi_watchdog - restart NMI watchdog timeout.
  *
  * If the architecture supports the NMI watchdog, touch_nmi_watchdog()
  * may be used to reset the timeout - for code which intentionally
  * disables interrupts for a long time. This call is stateless.
  */
 #if defined(CONFIG_HARDLOCKUP_DETECTOR_OTHER_CPU)
 extern void touch_nmi_watchdog(void);

 #if defined(CONFIG_SEC_DEBUG)
 extern void update_hardlockup_type(unsigned int cpu);
 unsigned long long get_hardlockup_thresh(void);
 #endif

 #else
 static inline void touch_nmi_watchdog(void)
 {
 	arch_touch_nmi_watchdog();
 	touch_softlockup_watchdog();
 }
 #endif
 /*
  * Create trigger_all_cpu_backtrace() out of the arch-provided
  * base function. Return whether such support was available,
  * to allow calling code to fall back to some other mechanism:
  */
 #ifdef arch_trigger_cpumask_backtrace
 static inline bool trigger_all_cpu_backtrace(void)
 {
 	arch_trigger_cpumask_backtrace(cpu_online_mask, false);
 	return true;
 }

 static inline bool trigger_allbutself_cpu_backtrace(void)
 {
 	arch_trigger_cpumask_backtrace(cpu_online_mask, true);
 	return true;
 }

 static inline bool trigger_cpumask_backtrace(struct cpumask *mask)
 {
 	arch_trigger_cpumask_backtrace(mask, false);
 	return true;
 }

 static inline bool trigger_single_cpu_backtrace(int cpu)
 {
 	arch_trigger_cpumask_backtrace(cpumask_of(cpu), false);
 	return true;
 }

 /* generic implementation */
 void nmi_trigger_cpumask_backtrace(const cpumask_t *mask,
 				   bool exclude_self,
 				   void (*raise)(cpumask_t *mask));
 bool nmi_cpu_backtrace(struct pt_regs *regs);

 #else
 static inline bool trigger_all_cpu_backtrace(void)
 {
 	return false;
 }
 static inline bool trigger_allbutself_cpu_backtrace(void)
 {
 	return false;
 }
 static inline bool trigger_cpumask_backtrace(struct cpumask *mask)
 {
 	return false;
 }
 static inline bool trigger_single_cpu_backtrace(int cpu)
 {
 	return false;
 }
 #endif

 #ifdef CONFIG_HARDLOCKUP_DETECTOR_PERF
 u64 hw_nmi_get_sample_period(int watchdog_thresh);
 #endif

 #if defined(CONFIG_HARDLOCKUP_CHECK_TIMESTAMP) && \
     defined(CONFIG_HARDLOCKUP_DETECTOR_PERF)
 void watchdog_update_hrtimer_threshold(u64 period);
 #else
 static inline void watchdog_update_hrtimer_threshold(u64 period) { }
 #endif

 struct ctl_table;
 extern int proc_watchdog(struct ctl_table *, int ,
 			 void __user *, size_t *, loff_t *);
 extern int proc_nmi_watchdog(struct ctl_table *, int ,
 			     void __user *, size_t *, loff_t *);
 extern int proc_soft_watchdog(struct ctl_table *, int ,
 			      void __user *, size_t *, loff_t *);
 extern int proc_watchdog_thresh(struct ctl_table *, int ,
 				void __user *, size_t *, loff_t *);
 extern int proc_watchdog_cpumask(struct ctl_table *, int,
 				 void __user *, size_t *, loff_t *);

 #ifdef CONFIG_HAVE_ACPI_APEI_NMI
 #include <asm/nmi.h>
 #endif

 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* linux/include/linux/nmi.h
	*/
	#ifndef LINUX_NMI_H
	#define LINUX_NMI_H

	#include <linux/sched.h>
	#include <asm/irq.h>
	#if defined(CONFIG_HAVE_NMI_WATCHDOG)
	#include <asm/nmi.h>
	#endif

	#ifdef CONFIG_SEC_DEBUG
	#define TASK_COMM_LEN 16
	#define SOFTIRQ_TYPE_LEN 16

	enum hardlockup_type {
	HL_TASK_STUCK = 1,
	HL_IRQ_STUCK,
	HL_IDLE_STUCK,
	HL_SMC_CALL_STUCK,
	HL_IRQ_STORM,
	HL_HRTIMER_ERROR,
	HL_UNKNOWN_STUCK
	};

	struct task_info {
	char task_comm[TASK_COMM_LEN];
	};

	struct cpuidle_info {
	char *mode;
	};

	struct smc_info {
	int cmd;
	};

	struct irq_info {
	int irq;
	void *fn;
	unsigned long long avg_period;
	};

	struct hardlockup_info {
	enum hardlockup_type hl_type;
	unsigned long long delay_time;
	union {
	struct task_info task_info;
	struct cpuidle_info cpuidle_info;
	struct smc_info smc_info;
	struct irq_info irq_info;
	};
	};

	struct softirq_info {
	ktime_t last_arrival;
	char softirq_type[SOFTIRQ_TYPE_LEN];
	void *fn;
	};

	enum softlockup_type {
	SL_SOFTIRQ_STUCK = 1,
	SL_TASK_STUCK,
	SL_UNKNOWN_STUCK
	};

	struct softlockup_info {
	enum softlockup_type sl_type;
	unsigned long long delay_time;
	int preempt_count;
	union {
	struct softirq_info softirq_info;
	struct task_info task_info;
	};
	};
	#endif

	#ifdef CONFIG_LOCKUP_DETECTOR
	void lockup_detector_init(void);
	void lockup_detector_soft_poweroff(void);
	void lockup_detector_cleanup(void);
	bool is_hardlockup(void);

	extern int watchdog_user_enabled;
	extern int nmi_watchdog_user_enabled;
	extern int soft_watchdog_user_enabled;
	extern int watchdog_thresh;
	extern unsigned long watchdog_enabled;

	extern struct cpumask watchdog_cpumask;
	extern unsigned long *watchdog_cpumask_bits;
	#ifdef CONFIG_SMP
	extern int sysctl_softlockup_all_cpu_backtrace;
	extern int sysctl_hardlockup_all_cpu_backtrace;
	#else
	#define sysctl_softlockup_all_cpu_backtrace 0
	#define sysctl_hardlockup_all_cpu_backtrace 0
	#endif /* !CONFIG_SMP */

	#else /* CONFIG_LOCKUP_DETECTOR */
	static inline void lockup_detector_init(void) { }
	static inline void lockup_detector_soft_poweroff(void) { }
	static inline void lockup_detector_cleanup(void) { }
	#endif /* !CONFIG_LOCKUP_DETECTOR */

	#ifdef CONFIG_SOFTLOCKUP_DETECTOR
	extern void touch_softlockup_watchdog_sched(void);
	extern void touch_softlockup_watchdog(void);
	extern void touch_softlockup_watchdog_sync(void);
	extern void touch_all_softlockup_watchdogs(void);
	extern unsigned int softlockup_panic;
	#else
	static inline void touch_softlockup_watchdog_sched(void) { }
	static inline void touch_softlockup_watchdog(void) { }
	static inline void touch_softlockup_watchdog_sync(void) { }
	static inline void touch_all_softlockup_watchdogs(void) { }
	#endif

	#if defined(CONFIG_SEC_DEBUG) && defined(CONFIG_SOFTLOCKUP_DETECTOR)
	extern void sl_softirq_entry(const char , void );
	extern void sl_softirq_exit(void);
	unsigned long long get_dss_softlockup_thresh(void);
	#else
	static inline void void sl_softirq_entry(const char , void ) { }
	static inline void sl_softirq_exit(void) { }
	#endif

	#ifdef CONFIG_DETECT_HUNG_TASK
	void reset_hung_task_detector(void);
	#else
	static inline void reset_hung_task_detector(void) { }
	#endif

	/*
	* The run state of the lockup detectors is controlled by the content of the
	* 'watchdog_enabled' variable. Each lockup detector has its dedicated bit -
	* bit 0 for the hard lockup detector and bit 1 for the soft lockup detector.
	*
	* 'watchdog_user_enabled', 'nmi_watchdog_user_enabled' and
	* 'soft_watchdog_user_enabled' are variables that are only used as an
	* 'interface' between the parameters in /proc/sys/kernel and the internal
	* state bits in 'watchdog_enabled'. The 'watchdog_thresh' variable is
	* handled differently because its value is not boolean, and the lockup
	* detectors are 'suspended' while 'watchdog_thresh' is equal zero.
	*/
	#define NMI_WATCHDOG_ENABLED_BIT 0
	#define SOFT_WATCHDOG_ENABLED_BIT 1
	#define NMI_WATCHDOG_ENABLED (1 << NMI_WATCHDOG_ENABLED_BIT)
	#define SOFT_WATCHDOG_ENABLED (1 << SOFT_WATCHDOG_ENABLED_BIT)

	#if defined(CONFIG_HARDLOCKUP_DETECTOR) \|\| defined(CONFIG_HARDLOCKUP_DETECTOR_OTHER_CPU)
	extern void hardlockup_detector_disable(void);
	extern unsigned int hardlockup_panic;
	#else
	static inline void hardlockup_detector_disable(void) {}
	#endif

	#if defined(CONFIG_HAVE_NMI_WATCHDOG) \|\| defined(CONFIG_HARDLOCKUP_DETECTOR)
	# define NMI_WATCHDOG_SYSCTL_PERM 0644
	#else
	# define NMI_WATCHDOG_SYSCTL_PERM 0444
	#endif

	#if defined(CONFIG_HARDLOCKUP_DETECTOR_PERF)
	extern void arch_touch_nmi_watchdog(void);
	extern void hardlockup_detector_perf_stop(void);
	extern void hardlockup_detector_perf_restart(void);
	extern void hardlockup_detector_perf_disable(void);
	extern void hardlockup_detector_perf_enable(void);
	extern void hardlockup_detector_perf_cleanup(void);
	extern int hardlockup_detector_perf_init(void);
	#else
	static inline void hardlockup_detector_perf_stop(void) { }
	static inline void hardlockup_detector_perf_restart(void) { }
	static inline void hardlockup_detector_perf_disable(void) { }
	static inline void hardlockup_detector_perf_enable(void) { }
	static inline void hardlockup_detector_perf_cleanup(void) { }
	# if !defined(CONFIG_HAVE_NMI_WATCHDOG)
	static inline int hardlockup_detector_perf_init(void) { return -ENODEV; }
	static inline void arch_touch_nmi_watchdog(void) {}
	# else
	static inline int hardlockup_detector_perf_init(void) { return 0; }
	# endif
	#endif

	void watchdog_nmi_stop(void);
	void watchdog_nmi_start(void);
	int watchdog_nmi_probe(void);
	int watchdog_nmi_enable(unsigned int cpu);
	void watchdog_nmi_disable(unsigned int cpu);

	/**
	* touch_nmi_watchdog - restart NMI watchdog timeout.
	*
	* If the architecture supports the NMI watchdog, touch_nmi_watchdog()
	* may be used to reset the timeout - for code which intentionally
	* disables interrupts for a long time. This call is stateless.
	*/
	#if defined(CONFIG_HARDLOCKUP_DETECTOR_OTHER_CPU)
	extern void touch_nmi_watchdog(void);

	#if defined(CONFIG_SEC_DEBUG)
	extern void update_hardlockup_type(unsigned int cpu);
	unsigned long long get_hardlockup_thresh(void);
	#endif

	#else
	static inline void touch_nmi_watchdog(void)
	{
	arch_touch_nmi_watchdog();
	touch_softlockup_watchdog();
	}
	#endif
	/*
	* Create trigger_all_cpu_backtrace() out of the arch-provided
	* base function. Return whether such support was available,
	* to allow calling code to fall back to some other mechanism:
	*/
	#ifdef arch_trigger_cpumask_backtrace
	static inline bool trigger_all_cpu_backtrace(void)
	{
	arch_trigger_cpumask_backtrace(cpu_online_mask, false);
	return true;
	}

	static inline bool trigger_allbutself_cpu_backtrace(void)
	{
	arch_trigger_cpumask_backtrace(cpu_online_mask, true);
	return true;
	}

	static inline bool trigger_cpumask_backtrace(struct cpumask *mask)
	{
	arch_trigger_cpumask_backtrace(mask, false);
	return true;
	}

	static inline bool trigger_single_cpu_backtrace(int cpu)
	{
	arch_trigger_cpumask_backtrace(cpumask_of(cpu), false);
	return true;
	}

	/* generic implementation */
	void nmi_trigger_cpumask_backtrace(const cpumask_t *mask,
	bool exclude_self,
	void (raise)(cpumask_t mask));
	bool nmi_cpu_backtrace(struct pt_regs *regs);

	#else
	static inline bool trigger_all_cpu_backtrace(void)
	{
	return false;
	}
	static inline bool trigger_allbutself_cpu_backtrace(void)
	{
	return false;
	}
	static inline bool trigger_cpumask_backtrace(struct cpumask *mask)
	{
	return false;
	}
	static inline bool trigger_single_cpu_backtrace(int cpu)
	{
	return false;
	}
	#endif

	#ifdef CONFIG_HARDLOCKUP_DETECTOR_PERF
	u64 hw_nmi_get_sample_period(int watchdog_thresh);
	#endif

	#if defined(CONFIG_HARDLOCKUP_CHECK_TIMESTAMP) && \
	defined(CONFIG_HARDLOCKUP_DETECTOR_PERF)
	void watchdog_update_hrtimer_threshold(u64 period);
	#else
	static inline void watchdog_update_hrtimer_threshold(u64 period) { }
	#endif

	struct ctl_table;
	extern int proc_watchdog(struct ctl_table *, int ,
	void __user , size_t , loff_t *);
	extern int proc_nmi_watchdog(struct ctl_table *, int ,
	void __user , size_t , loff_t *);
	extern int proc_soft_watchdog(struct ctl_table *, int ,
	void __user , size_t , loff_t *);
	extern int proc_watchdog_thresh(struct ctl_table *, int ,
	void __user , size_t , loff_t *);
	extern int proc_watchdog_cpumask(struct ctl_table *, int,
	void __user , size_t , loff_t *);

	#ifdef CONFIG_HAVE_ACPI_APEI_NMI
	#include <asm/nmi.h>
	#endif

	#endif