--- linux-pl12/fs/proc/array.c.orig	Mon Aug  9 20:02:29 1993
+++ linux-pl12/fs/proc/array.c	Mon Aug 16 20:54:36 1993
@@ -11,6 +11,7 @@
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
+#include <linux/kernel_stat.h>
 #include <linux/tty.h>
 
 #include <asm/segment.h>
@@ -63,6 +64,30 @@
 		i.totalswap, i.totalswap-i.freeswap, i.freeswap);
 }
 
+static int get_kstat(char * buffer)
+{
+	return sprintf(buffer,"cpu  %u,%u,%u,%u\ndisk %u,%u,%u,%u\npage %u,%u\nswap %u,%u\nintr %u\npack %u,%u\nerr  %u,%u\ncoll %u\nctxt %u\n",
+		kstat.cpu_user,
+		kstat.cpu_nice,
+		kstat.cpu_system,
+		jiffies - (kstat.cpu_user+kstat.cpu_nice+kstat.cpu_system),
+		kstat.dk_drive[0],
+		kstat.dk_drive[1],
+		kstat.dk_drive[2],
+		kstat.dk_drive[3],
+		kstat.pgpgin,
+		kstat.pgpgout,
+		kstat.pswpin,
+		kstat.pswpout,
+		kstat.interrupts,
+		kstat.ipackets,
+		kstat.opackets,
+		kstat.ierrors,
+		kstat.oerrors,
+		kstat.collisions,
+		kstat.context_swtch);
+}
+
 static int get_version(char * buffer)
 {
 	extern char *linux_banner;
@@ -344,6 +369,9 @@
 			length = get_malloc(page);
 			break;
 #endif
+		case 14:
+			length = get_kstat(page);
+			break;
 		default:
 			free_page((unsigned long) page);
 			return -EBADF;
--- linux-pl12/fs/proc/root.c.orig	Tue Jul 13 00:09:24 1993
+++ linux-pl12/fs/proc/root.c	Mon Aug 16 20:55:25 1993
@@ -64,6 +64,7 @@
 #ifdef CONFIG_DEBUG_MALLOC
 	{13,6,"malloc" },
 #endif
+	{14,4,"stat" },
 };
 
 #define NR_ROOT_DIRENTRY ((sizeof (root_dir))/(sizeof (root_dir[0])))
--- linux-pl12/kernel/blk_drv/ll_rw_blk.c.orig	Mon Aug 16 23:25:51 1993
+++ linux-pl12/kernel/blk_drv/ll_rw_blk.c	Tue Aug 17 00:06:59 1993
@@ -9,6 +9,7 @@
  */
 #include <linux/sched.h>
 #include <linux/kernel.h>
+#include <linux/kernel_stat.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/config.h>
@@ -355,6 +356,15 @@
 	  if (bh[i]) {
 	    bh[i]->b_req = 1;
 	    make_request(major, rw, bh[i]);
+	    /*
+	     * Actually we want to count requests on a per disk basis somewhere
+	     * else. Here we'd like to count total blocks. But it is too late 
+	     * at night, now, to keep things apart.  (jnweiger@uni-erlangen.de)
+	     */
+	    if (rw == READ || rw == READA)
+	    	kstat.pgpgin++;
+	    else
+	    	kstat.pgpgout++;
 	}
 	if(plugged){
 	  cli();
--- linux-pl12/kernel/sched.c.orig	Mon Aug  9 20:02:32 1993
+++ linux-pl12/kernel/sched.c	Mon Aug 16 23:23:46 1993
@@ -16,6 +16,7 @@
 #include <linux/sched.h>
 #include <linux/timer.h>
 #include <linux/kernel.h>
+#include <linux/kernel_stat.h>
 #include <linux/sys.h>
 #include <linux/fdreg.h>
 #include <linux/errno.h>
@@ -71,6 +72,9 @@
 
 long user_stack [ PAGE_SIZE>>2 ] ;
 
+struct kernel_stat kstat =
+	{ 0, 0, 0, { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
 struct {
 	long * a;
 	short b;
@@ -157,6 +161,9 @@
 		for_each_task(p)
 			p->counter = (p->counter >> 1) + p->priority;
 	}
+	if(current != next)
+		kstat.context_swtch++;
+
 	switch_to(next);
 }
 
@@ -361,6 +368,12 @@
 	calc_load();
 	if ((VM_MASK & regs->eflags) || (3 & regs->cs)) {
 		current->utime++;
+		if(current != task[0]) {
+			if(current->priority != 15)
+				kstat.cpu_nice++;
+			else
+				kstat.cpu_user++;
+		}
 		/* Update ITIMER_VIRT for current task if not in a system call */
 		if (current->it_virt_value && !(--current->it_virt_value)) {
 			current->it_virt_value = current->it_virt_incr;
@@ -368,6 +381,8 @@
 		}
 	} else {
 		current->stime++;
+		if(current != task[0])
+			kstat.cpu_system++;
 #ifdef CONFIG_PROFILE
 		if (prof_buffer && current != task[0]) {
 			unsigned long eip = regs->eip;
--- linux-pl12/mm/swap.c.orig	Mon Aug 16 23:27:08 1993
+++ linux-pl12/mm/swap.c	Mon Aug 16 22:02:51 1993
@@ -13,6 +13,7 @@
 #include <linux/sched.h>
 #include <linux/head.h>
 #include <linux/kernel.h>
+#include <linux/kernel_stat.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/stat.h>
@@ -77,6 +78,10 @@
 	}
 	while (set_bit(offset,p->swap_lockmap))
 		sleep_on(&lock_queue);
+	if (rw == READ)
+		kstat.pswpin++;
+	else
+		kstat.pswpout++;
 	if (p->swap_device) {
 		ll_rw_page(rw,p->swap_device,offset,buf);