[linux-2.6-block.git] / arch / riscv / include / asm / stacktrace.h

/* 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_STACK
DECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack);
#endif /* CONFIG_VMAP_STACK */

#endif /* _ASM_RISCV_STACKTRACE_H */
Commit	Line	Data
99c168fc KW	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#ifndef _ASM_RISCV_STACKTRACE_H
	4	#define _ASM_RISCV_STACKTRACE_H
	5
	6	#include <linux/sched.h>
	7	#include <asm/ptrace.h>
	8
	9	struct stackframe {
	10	unsigned long fp;
	11	unsigned long ra;
	12	};
	13
	14	extern void notrace walk_stackframe(struct task_struct task, struct pt_regs regs,
9dd97064	15	bool (fn)(void , unsigned long), void *arg);
091b9450 KW	16	extern void dump_backtrace(struct pt_regs regs, struct task_struct task,
091b9450 KW	17	const char *loglvl);
99c168fc	18
f0bddf50 GR	19	static inline bool on_thread_stack(void)
	20	{
	21	return !(((unsigned long)(current->stack) ^ current_stack_pointer) & ~(THREAD_SIZE - 1));
	22	}
	23
2cf96378 BD	24
	25	#ifdef CONFIG_VMAP_STACK
	26	DECLARE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack);
	27	#endif /* CONFIG_VMAP_STACK */
	28
99c168fc	29	#endif /* _ASM_RISCV_STACKTRACE_H */