xv6-riscv-kernel/kernel/sleeplock.h

#pragma once

#include "types.h"
#include "spinlock.h"

// Long-term locks for processes
struct sleeplock {
  u32             locked; // Is the lock held?
  struct spinlock lk;     // spinlock protecting this sleep lock

  // For debugging:
  char *name; // Name of lock.
  int   pid;  // Process holding lock
};