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-rw-r--r--arch/arc/include/asm/stacktrace.h37
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diff --git a/arch/arc/include/asm/stacktrace.h b/arch/arc/include/asm/stacktrace.h
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1/*
2 * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
3 * Copyright (C) 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#ifndef __ASM_STACKTRACE_H
11#define __ASM_STACKTRACE_H
12
13#include <linux/sched.h>
14
15/**
16 * arc_unwind_core - Unwind the kernel mode stack for an execution context
17 * @tsk: NULL for current task, specific task otherwise
18 * @regs: pt_regs used to seed the unwinder {SP, FP, BLINK, PC}
19 * If NULL, use pt_regs of @tsk (if !NULL) otherwise
20 * use the current values of {SP, FP, BLINK, PC}
21 * @consumer_fn: Callback invoked for each frame unwound
22 * Returns 0 to continue unwinding, -1 to stop
23 * @arg: Arg to callback
24 *
25 * Returns the address of first function in stack
26 *
27 * Semantics:
28 * - synchronous unwinding (e.g. dump_stack): @tsk NULL, @regs NULL
29 * - Asynchronous unwinding of sleeping task: @tsk !NULL, @regs NULL
30 * - Asynchronous unwinding of intr/excp etc: @tsk !NULL, @regs !NULL
31 */
32notrace noinline unsigned int arc_unwind_core(
33 struct task_struct *tsk, struct pt_regs *regs,
34 int (*consumer_fn) (unsigned int, void *),
35 void *arg);
36
37#endif /* __ASM_STACKTRACE_H */