/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2012 ARM Ltd. */#ifndef __ASM_STACKTRACE_H#define __ASM_STACKTRACE_H #include <linux/percpu.h>#include <linux/sched.h>#include <linux/sched/task_stack.h>#include <linux/llist.h> #include <asm/memory.h>#include <asm/pointer_auth.h>#include <asm/ptrace.h>#include <asm/sdei.h> #include <asm/stacktrace/common.h> extern void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk,			   const char *loglvl); DECLARE_PER_CPU(unsigned long *, irq_stack_ptr); static inline struct stack_info stackinfo_get_irq(void){	unsigned long low = (unsigned long)raw_cpu_read(irq_stack_ptr);	unsigned long high = low + IRQ_STACK_SIZE; 	return (struct stack_info) {		.low = low,		.high = high,	};} static inline bool on_irq_stack(unsigned long sp, unsigned long size){	struct stack_info info = stackinfo_get_irq();	return stackinfo_on_stack(&info, sp, size);} static inline struct stack_info stackinfo_get_task(const struct task_struct *tsk){	unsigned long low = (unsigned long)task_stack_page(tsk);	unsigned long high = low + THREAD_SIZE; 	return (struct stack_info) {		.low = low,		.high = high,	};} static inline bool on_task_stack(const struct task_struct *tsk,				 unsigned long sp, unsigned long size){	struct stack_info info = stackinfo_get_task(tsk);	return stackinfo_on_stack(&info, sp, size);} #define on_thread_stack()	(on_task_stack(current, current_stack_pointer, 1)) #ifdef CONFIG_VMAP_STACKDECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack); static inline struct stack_info stackinfo_get_overflow(void){	unsigned long low = (unsigned long)raw_cpu_ptr(overflow_stack);	unsigned long high = low + OVERFLOW_STACK_SIZE; 	return (struct stack_info) {		.low = low,		.high = high,	};}#else#define stackinfo_get_overflow()	stackinfo_get_unknown()#endif #if defined(CONFIG_ARM_SDE_INTERFACE) && defined(CONFIG_VMAP_STACK)DECLARE_PER_CPU(unsigned long *, sdei_stack_normal_ptr);DECLARE_PER_CPU(unsigned long *, sdei_stack_critical_ptr); static inline struct stack_info stackinfo_get_sdei_normal(void){	unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_normal_ptr);	unsigned long high = low + SDEI_STACK_SIZE; 	return (struct stack_info) {		.low = low,		.high = high,	};} static inline struct stack_info stackinfo_get_sdei_critical(void){	unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_critical_ptr);	unsigned long high = low + SDEI_STACK_SIZE; 	return (struct stack_info) {		.low = low,		.high = high,	};}#else#define stackinfo_get_sdei_normal()	stackinfo_get_unknown()#define stackinfo_get_sdei_critical()	stackinfo_get_unknown()#endif #ifdef CONFIG_EFIextern u64 *efi_rt_stack_top; static inline struct stack_info stackinfo_get_efi(void){	unsigned long high = (u64)efi_rt_stack_top;	unsigned long low = high - THREAD_SIZE; 	return (struct stack_info) {		.low = low,		.high = high,	};}#endif #endif	/* __ASM_STACKTRACE_H */