| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) |
| 4 | * Copyright (C) 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | */ |
| 29 | notrace 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 */ |