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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121/* 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))
DECLARE_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, };}
#if defined(CONFIG_ARM_SDE_INTERFACE)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 */