1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __LINUX_STACKTRACE_H |
3 | #define __LINUX_STACKTRACE_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | struct task_struct; |
8 | struct pt_regs; |
9 | |
10 | #ifdef CONFIG_STACKTRACE |
11 | struct stack_trace { |
12 | unsigned int nr_entries, max_entries; |
13 | unsigned long *entries; |
14 | int skip; /* input argument: How many entries to skip */ |
15 | }; |
16 | |
17 | extern void save_stack_trace(struct stack_trace *trace); |
18 | extern void save_stack_trace_regs(struct pt_regs *regs, |
19 | struct stack_trace *trace); |
20 | extern void save_stack_trace_tsk(struct task_struct *tsk, |
21 | struct stack_trace *trace); |
22 | extern int save_stack_trace_tsk_reliable(struct task_struct *tsk, |
23 | struct stack_trace *trace); |
24 | |
25 | extern void print_stack_trace(struct stack_trace *trace, int spaces); |
26 | extern int snprint_stack_trace(char *buf, size_t size, |
27 | struct stack_trace *trace, int spaces); |
28 | |
29 | #ifdef CONFIG_USER_STACKTRACE_SUPPORT |
30 | extern void save_stack_trace_user(struct stack_trace *trace); |
31 | #else |
32 | # define save_stack_trace_user(trace) do { } while (0) |
33 | #endif |
34 | |
35 | #else /* !CONFIG_STACKTRACE */ |
36 | # define save_stack_trace(trace) do { } while (0) |
37 | # define save_stack_trace_tsk(tsk, trace) do { } while (0) |
38 | # define save_stack_trace_user(trace) do { } while (0) |
39 | # define print_stack_trace(trace, spaces) do { } while (0) |
40 | # define snprint_stack_trace(buf, size, trace, spaces) do { } while (0) |
41 | # define save_stack_trace_tsk_reliable(tsk, trace) ({ -ENOSYS; }) |
42 | #endif /* CONFIG_STACKTRACE */ |
43 | |
44 | #endif /* __LINUX_STACKTRACE_H */ |
45 | |