kernel/buf.h

@@ -1,9 +1,3 @@
-#pragma once
-
-#include "types.h"
-#include "sleeplock.h"
-#include "fs.h"
-
 struct buf {
   int              valid; // has data been read from disk?
   int              disk;  // does disk "own" buf?

kernel/defs.h

@@ -1,8 +1,3 @@
-#pragma once
-
-#include "riscv.h"
-#include "types.h"
-
 struct buf;
 struct context;
 struct file;

kernel/elf.h

@@ -1,7 +1,3 @@
-#pragma once
-
-#include "types.h"
-
 // Format of an ELF executable file
 
 #define ELF_MAGIC 0x464C457FU // "\x7FELF" in little endian

kernel/fcntl.h

@@ -1,5 +1,3 @@
-#pragma once
-
 #define O_RDONLY 0x000
 #define O_WRONLY 0x001
 #define O_RDWR   0x002

kernel/file.h

@@ -1,9 +1,3 @@
-#pragma once
-
-#include "types.h"
-#include "sleeplock.h"
-#include "fs.h"
-
 struct file {
   enum { FD_NONE, FD_PIPE, FD_INODE, FD_DEVICE } type;
   int           ref; // reference count

kernel/fs.h

@@ -1,7 +1,3 @@
-#pragma once
-
-#include "types.h"
-
 // On-disk file system format.
 // Both the kernel and user programs use this header file.
 

kernel/memlayout.h

@@ -1,5 +1,3 @@
-#pragma once
-
 // Physical memory layout
 
 // qemu -machine virt is set up like this,

kernel/param.h

@@ -1,5 +1,3 @@
-#pragma once
-
 #define NPROC       64                // maximum number of processes
 #define NCPU        8                 // maximum number of CPUs
 #define NOFILE      16                // open files per process

kernel/proc.h

@@ -1,10 +1,3 @@
-#pragma once
-
-#include "types.h"
-#include "param.h"
-#include "riscv.h"
-#include "spinlock.h"
-
 // Saved registers for kernel context switches.
 struct context {
   u64 ra;
@@ -111,5 +104,4 @@ struct proc {
   struct file      *ofile[NOFILE]; // Open files
   struct inode     *cwd;           // Current directory
   char              name[16];      // Process name (debugging)
-  int               mask;          // Process mask
 };

kernel/riscv.h

@@ -1,9 +1,5 @@
-#pragma once
-
 #ifndef __ASSEMBLER__
 
-#include "types.h"
-
 // which hart (core) is this?
 static inline u64
 r_mhartid()

kernel/sleeplock.h

@@ -1,8 +1,3 @@
-#pragma once
-
-#include "types.h"
-#include "spinlock.h"
-
 // Long-term locks for processes
 struct sleeplock {
   u32             locked; // Is the lock held?

kernel/spinlock.h

@@ -1,7 +1,3 @@
-#pragma once
-
-#include "types.h"
-
 // Mutual exclusion lock.
 struct spinlock {
   u32 locked; // Is the lock held?

kernel/stat.h

@@ -1,7 +1,3 @@
-#pragma once
-
-#include "types.h"
-
 #define T_DIR    1 // Directory
 #define T_FILE   2 // File
 #define T_DEVICE 3 // Device

kernel/syscall.c

@@ -101,17 +101,16 @@ extern u64 sys_unlink(void);
 extern u64 sys_link(void);
 extern u64 sys_mkdir(void);
 extern u64 sys_close(void);
-extern u64 sys_trace(void);
 
 // An array mapping syscall numbers from syscall.h
 // to the function that handles the system call.
 static u64 (*syscalls[])(void) = {
-  [SYS_fork] = sys_fork,   [SYS_exit] = sys_exit,     [SYS_wait] = sys_wait,     [SYS_pipe] = sys_pipe,
-  [SYS_read] = sys_read,   [SYS_kill] = sys_kill,     [SYS_exec] = sys_exec,     [SYS_fstat] = sys_fstat,
-  [SYS_chdir] = sys_chdir, [SYS_dup] = sys_dup,       [SYS_getpid] = sys_getpid, [SYS_sbrk] = sys_sbrk,
-  [SYS_sleep] = sys_sleep, [SYS_uptime] = sys_uptime, [SYS_open] = sys_open,     [SYS_write] = sys_write,
-  [SYS_mknod] = sys_mknod, [SYS_unlink] = sys_unlink, [SYS_link] = sys_link,     [SYS_mkdir] = sys_mkdir,
-  [SYS_close] = sys_close, [SYS_trace] = sys_trace,
+  [SYS_fork] sys_fork,   [SYS_exit] sys_exit,     [SYS_wait] sys_wait,     [SYS_pipe] sys_pipe,
+  [SYS_read] sys_read,   [SYS_kill] sys_kill,     [SYS_exec] sys_exec,     [SYS_fstat] sys_fstat,
+  [SYS_chdir] sys_chdir, [SYS_dup] sys_dup,       [SYS_getpid] sys_getpid, [SYS_sbrk] sys_sbrk,
+  [SYS_sleep] sys_sleep, [SYS_uptime] sys_uptime, [SYS_open] sys_open,     [SYS_write] sys_write,
+  [SYS_mknod] sys_mknod, [SYS_unlink] sys_unlink, [SYS_link] sys_link,     [SYS_mkdir] sys_mkdir,
+  [SYS_close] sys_close,
 };
 
 void

kernel/syscall.h

@@ -1,5 +1,3 @@
-#pragma once
-
 // System call numbers
 #define SYS_fork   1
 #define SYS_exit   2
@@ -22,4 +20,3 @@
 #define SYS_link   19
 #define SYS_mkdir  20
 #define SYS_close  21
-#define SYS_trace  22

kernel/sysproc.c

@@ -89,10 +89,3 @@ sys_uptime(void)
   release(&tickslock);
   return xticks;
 }
-
-u64
-sys_trace(void)
-{
-  /* TODO: Implement sys_trace */
-  return 0;
-}

kernel/types.h

@@ -1,5 +1,3 @@
-#pragma once
-
 typedef unsigned char  u8;
 typedef unsigned short u16;
 typedef unsigned int   u32;

kernel/virtio.h

@@ -1,7 +1,4 @@
-#pragma once
-
-#include "types.h"
-
+//
 // virtio device definitions.
 // for both the mmio interface, and virtio descriptors.
 // only tested with qemu.

user/user.h

@@ -1,7 +1,3 @@
-#pragma once
-
-#include "../kernel/types.h"
-
 struct stat;
 
 // system calls
@@ -26,7 +22,6 @@ int   getpid(void);
 char *sbrk(int);
 int   sleep(int);
 int   uptime(void);
-int   trace(int);
 
 // ulib.c
 int   stat(const char *, struct stat *);

user/usys.pl

@@ -36,4 +36,3 @@ entry("getpid");
 entry("sbrk");
 entry("sleep");
 entry("uptime");
-entry("trace");