1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) 4 * Copyright (C) 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 5 */ 6 7#ifndef __ASM_STACKTRACE_H 8#define __ASM_STACKTRACE_H 9 10#include <linux/sched.h> 11 12/** 13 * arc_unwind_core - Unwind the kernel mode stack for an execution context 14 * @tsk: NULL for current task, specific task otherwise 15 * @regs: pt_regs used to seed the unwinder {SP, FP, BLINK, PC} 16 * If NULL, use pt_regs of @tsk (if !NULL) otherwise 17 * use the current values of {SP, FP, BLINK, PC} 18 * @consumer_fn: Callback invoked for each frame unwound 19 * Returns 0 to continue unwinding, -1 to stop 20 * @arg: Arg to callback 21 * 22 * Returns the address of first function in stack 23 * 24 * Semantics: 25 * - synchronous unwinding (e.g. dump_stack): @tsk NULL, @regs NULL 26 * - Asynchronous unwinding of sleeping task: @tsk !NULL, @regs NULL 27 * - Asynchronous unwinding of intr/excp etc: @tsk !NULL, @regs !NULL 28 */ 29notrace noinline unsigned int arc_unwind_core( 30 struct task_struct *tsk, struct pt_regs *regs, 31 int (*consumer_fn) (unsigned int, void *), 32 void *arg); 33 34#endif /* __ASM_STACKTRACE_H */ 35