1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_SCHED_DEBUG_H
3 #define _LINUX_SCHED_DEBUG_H
4 
5 /*
6  * Various scheduler/task debugging interfaces:
7  */
8 
9 struct task_struct;
10 struct pid_namespace;
11 
12 extern void dump_cpu_task(int cpu);
13 
14 /*
15  * Only dump TASK_* tasks. (0 for all tasks)
16  */
17 extern void show_state_filter(unsigned int state_filter);
18 
show_state(void)19 static inline void show_state(void)
20 {
21 	show_state_filter(0);
22 }
23 
24 struct pt_regs;
25 
26 extern void show_regs(struct pt_regs *);
27 
28 /*
29  * TASK is a pointer to the task whose backtrace we want to see (or NULL for current
30  * task), SP is the stack pointer of the first frame that should be shown in the back
31  * trace (or NULL if the entire call-chain of the task should be shown).
32  */
33 extern void show_stack(struct task_struct *task, unsigned long *sp,
34 		       const char *loglvl);
35 
36 extern void sched_show_task(struct task_struct *p);
37 
38 #ifdef CONFIG_SCHED_DEBUG
39 struct seq_file;
40 extern void proc_sched_show_task(struct task_struct *p,
41 				 struct pid_namespace *ns, struct seq_file *m);
42 extern void proc_sched_set_task(struct task_struct *p);
43 #endif
44 
45 /* Attach to any functions which should be ignored in wchan output. */
46 #define __sched		__section(".sched.text")
47 
48 /* Linker adds these: start and end of __sched functions */
49 extern char __sched_text_start[], __sched_text_end[];
50 
51 /* Is this address in the __sched functions? */
52 extern int in_sched_functions(unsigned long addr);
53 
54 #endif /* _LINUX_SCHED_DEBUG_H */
55