include/linux/sched/debug.h

   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 long state_filter);
  18
  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
  35 extern void sched_show_task(struct task_struct *p);
  36
  37 #ifdef CONFIG_SCHED_DEBUG
  38 struct seq_file;
  39 extern void proc_sched_show_task(struct task_struct *p,
  40                                  struct pid_namespace *ns, struct seq_file *m);
  41 extern void proc_sched_set_task(struct task_struct *p);
  42 #endif
  43
  44 /* Attach to any functions which should be ignored in wchan output. */
  45 #define __sched         __attribute__((__section__(".sched.text")))
  46
  47 /* Linker adds these: start and end of __sched functions */
  48 extern char __sched_text_start[], __sched_text_end[];
  49
  50 /* Is this address in the __sched functions? */
  51 extern int in_sched_functions(unsigned long addr);
  52
  53 #endif /* _LINUX_SCHED_DEBUG_H */