| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) |
| * Copyright (C) 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| */ |
| |
| #ifndef __ASM_STACKTRACE_H |
| #define __ASM_STACKTRACE_H |
| |
| #include <linux/sched.h> |
| |
| /** |
| * arc_unwind_core - Unwind the kernel mode stack for an execution context |
| * @tsk: NULL for current task, specific task otherwise |
| * @regs: pt_regs used to seed the unwinder {SP, FP, BLINK, PC} |
| * If NULL, use pt_regs of @tsk (if !NULL) otherwise |
| * use the current values of {SP, FP, BLINK, PC} |
| * @consumer_fn: Callback invoked for each frame unwound |
| * Returns 0 to continue unwinding, -1 to stop |
| * @arg: Arg to callback |
| * |
| * Returns the address of first function in stack |
| * |
| * Semantics: |
| * - synchronous unwinding (e.g. dump_stack): @tsk NULL, @regs NULL |
| * - Asynchronous unwinding of sleeping task: @tsk !NULL, @regs NULL |
| * - Asynchronous unwinding of intr/excp etc: @tsk !NULL, @regs !NULL |
| */ |
| notrace noinline unsigned int arc_unwind_core( |
| struct task_struct *tsk, struct pt_regs *regs, |
| int (*consumer_fn) (unsigned int, void *), |
| void *arg); |
| |
| #endif /* __ASM_STACKTRACE_H */ |