/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_RISCV_STACKTRACE_H#define _ASM_RISCV_STACKTRACE_H #include <linux/sched.h>#include <asm/ptrace.h> struct stackframe {	unsigned long fp;	unsigned long ra;}; extern void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,				    bool (*fn)(void *, unsigned long), void *arg);extern void dump_backtrace(struct pt_regs *regs, struct task_struct *task,			   const char *loglvl); static inline bool on_thread_stack(void){	return !(((unsigned long)(current->stack) ^ current_stack_pointer) & ~(THREAD_SIZE - 1));}  #ifdef CONFIG_VMAP_STACKDECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack);#endif /* CONFIG_VMAP_STACK */ #endif /* _ASM_RISCV_STACKTRACE_H */