Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 770 insertions, 0 deletions

diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
new file mode 100644
index 000000000000..01ae1964c938
--- /dev/null
+++ b/arch/s390/appldata/appldata_base.c
@@ -0,0 +1,770 @@
+/*
+ * arch/s390/appldata/appldata_base.c
+ *
+ * Base infrastructure for Linux-z/VM Monitor Stream, Stage 1.
+ * Exports appldata_register_ops() and appldata_unregister_ops() for the
+ * data gathering modules.
+ *
+ * Copyright (C) 2003 IBM Corporation, IBM Deutschland Entwicklung GmbH.
+ *
+ * Author: Gerald Schaefer <geraldsc@de.ibm.com>
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/smp.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/page-flags.h>
+#include <linux/swap.h>
+#include <linux/pagemap.h>
+#include <linux/sysctl.h>
+#include <asm/timer.h>
+//#include <linux/kernel_stat.h>
+#include <linux/notifier.h>
+#include <linux/cpu.h>
+
+#include "appldata.h"
+
+
+#define MY_PRINT_NAME	"appldata"		/* for debug messages, etc. */
+#define APPLDATA_CPU_INTERVAL	10000		/* default (CPU) time for
+						   sampling interval in
+						   milliseconds */
+
+#define TOD_MICRO	0x01000			/* nr. of TOD clock units
+						   for 1 microsecond */
+#ifndef CONFIG_ARCH_S390X
+
+#define APPLDATA_START_INTERVAL_REC 0x00   	/* Function codes for */
+#define APPLDATA_STOP_REC	    0x01	/* DIAG 0xDC	  */
+#define APPLDATA_GEN_EVENT_RECORD   0x02
+#define APPLDATA_START_CONFIG_REC   0x03
+
+#else
+
+#define APPLDATA_START_INTERVAL_REC 0x80
+#define APPLDATA_STOP_REC   	    0x81
+#define APPLDATA_GEN_EVENT_RECORD   0x82
+#define APPLDATA_START_CONFIG_REC   0x83
+
+#endif /* CONFIG_ARCH_S390X */
+
+
+/*
+ * Parameter list for DIAGNOSE X'DC'
+ */
+#ifndef CONFIG_ARCH_S390X
+struct appldata_parameter_list {
+	u16 diag;		/* The DIAGNOSE code X'00DC'          */
+	u8  function;		/* The function code for the DIAGNOSE */
+	u8  parlist_length;	/* Length of the parameter list       */
+	u32 product_id_addr;	/* Address of the 16-byte product ID  */
+	u16 reserved;
+	u16 buffer_length;	/* Length of the application data buffer  */
+	u32 buffer_addr;	/* Address of the application data buffer */
+};
+#else
+struct appldata_parameter_list {
+	u16 diag;
+	u8  function;
+	u8  parlist_length;
+	u32 unused01;
+	u16 reserved;
+	u16 buffer_length;
+	u32 unused02;
+	u64 product_id_addr;
+	u64 buffer_addr;
+};
+#endif /* CONFIG_ARCH_S390X */
+
+/*
+ * /proc entries (sysctl)
+ */
+static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata";
+static int appldata_timer_handler(ctl_table *ctl, int write, struct file *filp,
+				  void __user *buffer, size_t *lenp, loff_t *ppos);
+static int appldata_interval_handler(ctl_table *ctl, int write,
+					 struct file *filp,
+					 void __user *buffer,
+					 size_t *lenp, loff_t *ppos);
+
+static struct ctl_table_header *appldata_sysctl_header;
+static struct ctl_table appldata_table[] = {
+	{
+		.ctl_name	= CTL_APPLDATA_TIMER,
+		.procname	= "timer",
+		.mode		= S_IRUGO | S_IWUSR,
+		.proc_handler	= &appldata_timer_handler,
+	},
+	{
+		.ctl_name	= CTL_APPLDATA_INTERVAL,
+		.procname	= "interval",
+		.mode		= S_IRUGO | S_IWUSR,
+		.proc_handler	= &appldata_interval_handler,
+	},
+	{ .ctl_name = 0 }
+};
+
+static struct ctl_table appldata_dir_table[] = {
+	{
+		.ctl_name	= CTL_APPLDATA,
+		.procname	= appldata_proc_name,
+		.maxlen		= 0,
+		.mode		= S_IRUGO | S_IXUGO,
+		.child		= appldata_table,
+	},
+	{ .ctl_name = 0 }
+};
+
+/*
+ * Timer
+ */
+DEFINE_PER_CPU(struct vtimer_list, appldata_timer);
+static atomic_t appldata_expire_count = ATOMIC_INIT(0);
+
+static DEFINE_SPINLOCK(appldata_timer_lock);
+static int appldata_interval = APPLDATA_CPU_INTERVAL;
+static int appldata_timer_active;
+
+/*
+ * Tasklet
+ */
+static struct tasklet_struct appldata_tasklet_struct;
+
+/*
+ * Ops list
+ */
+static DEFINE_SPINLOCK(appldata_ops_lock);
+static LIST_HEAD(appldata_ops_list);
+
+
+/************************* timer, tasklet, DIAG ******************************/
+/*
+ * appldata_timer_function()
+ *
+ * schedule tasklet and reschedule timer
+ */
+static void appldata_timer_function(unsigned long data, struct pt_regs *regs)
+{
+	P_DEBUG("   -= Timer =-\n");
+	P_DEBUG("CPU: %i, expire_count: %i\n", smp_processor_id(),
+		atomic_read(&appldata_expire_count));
+	if (atomic_dec_and_test(&appldata_expire_count)) {
+		atomic_set(&appldata_expire_count, num_online_cpus());
+		tasklet_schedule((struct tasklet_struct *) data);
+	}
+}
+
+/*
+ * appldata_tasklet_function()
+ *
+ * call data gathering function for each (active) module
+ */
+static void appldata_tasklet_function(unsigned long data)
+{
+	struct list_head *lh;
+	struct appldata_ops *ops;
+	int i;
+
+	P_DEBUG("  -= Tasklet =-\n");
+	i = 0;
+	spin_lock(&appldata_ops_lock);
+	list_for_each(lh, &appldata_ops_list) {
+		ops = list_entry(lh, struct appldata_ops, list);
+		P_DEBUG("list_for_each loop: %i) active = %u, name = %s\n",
+			++i, ops->active, ops->name);
+		if (ops->active == 1) {
+			ops->callback(ops->data);
+		}
+	}
+	spin_unlock(&appldata_ops_lock);
+}
+
+/*
+ * appldata_diag()
+ *
+ * prepare parameter list, issue DIAG 0xDC
+ */
+static int appldata_diag(char record_nr, u16 function, unsigned long buffer,
+			u16 length)
+{
+	unsigned long ry;
+	struct appldata_product_id {
+		char prod_nr[7];			/* product nr. */
+		char prod_fn[2];			/* product function */
+		char record_nr;				/* record nr. */
+		char version_nr[2];			/* version */
+		char release_nr[2];			/* release */
+		char mod_lvl[2];			/* modification lvl. */
+	} appldata_product_id = {
+	/* all strings are EBCDIC, record_nr is byte */
+		.prod_nr    = {0xD3, 0xC9, 0xD5, 0xE4,
+				0xE7, 0xD2, 0xD9},	/* "LINUXKR" */
+		.prod_fn    = {0xD5, 0xD3},		/* "NL" */
+		.record_nr  = record_nr,
+		.version_nr = {0xF2, 0xF6},		/* "26" */
+		.release_nr = {0xF0, 0xF1},		/* "01" */
+		.mod_lvl    = {0xF0, 0xF0},		/* "00" */
+	};
+	struct appldata_parameter_list appldata_parameter_list = {
+				.diag = 0xDC,
+				.function = function,
+				.parlist_length =
+					sizeof(appldata_parameter_list),
+				.buffer_length = length,
+				.product_id_addr =
+					(unsigned long) &appldata_product_id,
+				.buffer_addr = virt_to_phys((void *) buffer)
+	};
+
+	if (!MACHINE_IS_VM)
+		return -ENOSYS;
+	ry = -1;
+	asm volatile(
+			"diag %1,%0,0xDC\n\t"
+			: "=d" (ry) : "d" (&(appldata_parameter_list)) : "cc");
+	return (int) ry;
+}
+/********************** timer, tasklet, DIAG <END> ***************************/
+
+
+/****************************** /proc stuff **********************************/
+
+/*
+ * appldata_mod_vtimer_wrap()
+ *
+ * wrapper function for mod_virt_timer(), because smp_call_function_on()
+ * accepts only one parameter.
+ */
+static void __appldata_mod_vtimer_wrap(void *p) {
+	struct {
+		struct vtimer_list *timer;
+		u64    expires;
+	} *args = p;
+	mod_virt_timer(args->timer, args->expires);
+}
+
+#define APPLDATA_ADD_TIMER	0
+#define APPLDATA_DEL_TIMER	1
+#define APPLDATA_MOD_TIMER	2
+
+/*
+ * __appldata_vtimer_setup()
+ *
+ * Add, delete or modify virtual timers on all online cpus.
+ * The caller needs to get the appldata_timer_lock spinlock.
+ */
+static void
+__appldata_vtimer_setup(int cmd)
+{
+	u64 per_cpu_interval;
+	int i;
+
+	switch (cmd) {
+	case APPLDATA_ADD_TIMER:
+		if (appldata_timer_active)
+			break;
+		per_cpu_interval = (u64) (appldata_interval*1000 /
+					  num_online_cpus()) * TOD_MICRO;
+		for_each_online_cpu(i) {
+			per_cpu(appldata_timer, i).expires = per_cpu_interval;
+			smp_call_function_on(add_virt_timer_periodic,
+					     &per_cpu(appldata_timer, i),
+					     0, 1, i);
+		}
+		appldata_timer_active = 1;
+		P_INFO("Monitoring timer started.\n");
+		break;
+	case APPLDATA_DEL_TIMER:
+		for_each_online_cpu(i)
+			del_virt_timer(&per_cpu(appldata_timer, i));
+		if (!appldata_timer_active)
+			break;
+		appldata_timer_active = 0;
+		atomic_set(&appldata_expire_count, num_online_cpus());
+		P_INFO("Monitoring timer stopped.\n");
+		break;
+	case APPLDATA_MOD_TIMER:
+		per_cpu_interval = (u64) (appldata_interval*1000 /
+					  num_online_cpus()) * TOD_MICRO;
+		if (!appldata_timer_active)
+			break;
+		for_each_online_cpu(i) {
+			struct {
+				struct vtimer_list *timer;
+				u64    expires;
+			} args;
+			args.timer = &per_cpu(appldata_timer, i);
+			args.expires = per_cpu_interval;
+			smp_call_function_on(__appldata_mod_vtimer_wrap,
+					     &args, 0, 1, i);
+		}
+	}
+}
+
+/*
+ * appldata_timer_handler()
+ *
+ * Start/Stop timer, show status of timer (0 = not active, 1 = active)
+ */
+static int
+appldata_timer_handler(ctl_table *ctl, int write, struct file *filp,
+			   void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+	int len;
+	char buf[2];
+
+	if (!*lenp || *ppos) {
+		*lenp = 0;
+		return 0;
+	}
+	if (!write) {
+		len = sprintf(buf, appldata_timer_active ? "1\n" : "0\n");
+		if (len > *lenp)
+			len = *lenp;
+		if (copy_to_user(buffer, buf, len))
+			return -EFAULT;
+		goto out;
+	}
+	len = *lenp;
+	if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len))
+		return -EFAULT;
+	spin_lock(&appldata_timer_lock);
+	if (buf[0] == '1')
+		__appldata_vtimer_setup(APPLDATA_ADD_TIMER);
+	else if (buf[0] == '0')
+		__appldata_vtimer_setup(APPLDATA_DEL_TIMER);
+	spin_unlock(&appldata_timer_lock);
+out:
+	*lenp = len;
+	*ppos += len;
+	return 0;
+}
+
+/*
+ * appldata_interval_handler()
+ *
+ * Set (CPU) timer interval for collection of data (in milliseconds), show
+ * current timer interval.
+ */
+static int
+appldata_interval_handler(ctl_table *ctl, int write, struct file *filp,
+			   void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+	int len, interval;
+	char buf[16];
+
+	if (!*lenp || *ppos) {
+		*lenp = 0;
+		return 0;
+	}
+	if (!write) {
+		len = sprintf(buf, "%i\n", appldata_interval);
+		if (len > *lenp)
+			len = *lenp;
+		if (copy_to_user(buffer, buf, len))
+			return -EFAULT;
+		goto out;
+	}
+	len = *lenp;
+	if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len)) {
+		return -EFAULT;
+	}
+	sscanf(buf, "%i", &interval);
+	if (interval <= 0) {
+		P_ERROR("Timer CPU interval has to be > 0!\n");
+		return -EINVAL;
+	}
+
+	spin_lock(&appldata_timer_lock);
+	appldata_interval = interval;
+	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
+	spin_unlock(&appldata_timer_lock);
+
+	P_INFO("Monitoring CPU interval set to %u milliseconds.\n",
+		 interval);
+out:
+	*lenp = len;
+	*ppos += len;
+	return 0;
+}
+
+/*
+ * appldata_generic_handler()
+ *
+ * Generic start/stop monitoring and DIAG, show status of
+ * monitoring (0 = not in process, 1 = in process)
+ */
+static int
+appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
+			   void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+	struct appldata_ops *ops = NULL, *tmp_ops;
+	int rc, len, found;
+	char buf[2];
+	struct list_head *lh;
+
+	found = 0;
+	spin_lock_bh(&appldata_ops_lock);
+	list_for_each(lh, &appldata_ops_list) {
+		tmp_ops = list_entry(lh, struct appldata_ops, list);
+		if (&tmp_ops->ctl_table[2] == ctl) {
+			found = 1;
+		}
+	}
+	if (!found) {
+		spin_unlock_bh(&appldata_ops_lock);
+		return -ENODEV;
+	}
+	ops = ctl->data;
+	if (!try_module_get(ops->owner)) {	// protect this function
+		spin_unlock_bh(&appldata_ops_lock);
+		return -ENODEV;
+	}
+	spin_unlock_bh(&appldata_ops_lock);
+
+	if (!*lenp || *ppos) {
+		*lenp = 0;
+		module_put(ops->owner);
+		return 0;
+	}
+	if (!write) {
+		len = sprintf(buf, ops->active ? "1\n" : "0\n");
+		if (len > *lenp)
+			len = *lenp;
+		if (copy_to_user(buffer, buf, len)) {
+			module_put(ops->owner);
+			return -EFAULT;
+		}
+		goto out;
+	}
+	len = *lenp;
+	if (copy_from_user(buf, buffer,
+			   len > sizeof(buf) ? sizeof(buf) : len)) {
+		module_put(ops->owner);
+		return -EFAULT;
+	}
+
+	spin_lock_bh(&appldata_ops_lock);
+	if ((buf[0] == '1') && (ops->active == 0)) {
+		if (!try_module_get(ops->owner)) {	// protect tasklet
+			spin_unlock_bh(&appldata_ops_lock);
+			module_put(ops->owner);
+			return -ENODEV;
+		}
+		ops->active = 1;
+		ops->callback(ops->data);	// init record
+		rc = appldata_diag(ops->record_nr,
+					APPLDATA_START_INTERVAL_REC,
+					(unsigned long) ops->data, ops->size);
+		if (rc != 0) {
+			P_ERROR("START DIAG 0xDC for %s failed, "
+				"return code: %d\n", ops->name, rc);
+			module_put(ops->owner);
+			ops->active = 0;
+		} else {
+			P_INFO("Monitoring %s data enabled, "
+				"DIAG 0xDC started.\n", ops->name);
+		}
+	} else if ((buf[0] == '0') && (ops->active == 1)) {
+		ops->active = 0;
+		rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
+				(unsigned long) ops->data, ops->size);
+		if (rc != 0) {
+			P_ERROR("STOP DIAG 0xDC for %s failed, "
+				"return code: %d\n", ops->name, rc);
+		} else {
+			P_INFO("Monitoring %s data disabled, "
+				"DIAG 0xDC stopped.\n", ops->name);
+		}
+		module_put(ops->owner);
+	}
+	spin_unlock_bh(&appldata_ops_lock);
+out:
+	*lenp = len;
+	*ppos += len;
+	module_put(ops->owner);
+	return 0;
+}
+
+/*************************** /proc stuff <END> *******************************/
+
+
+/************************* module-ops management *****************************/
+/*
+ * appldata_register_ops()
+ *
+ * update ops list, register /proc/sys entries
+ */
+int appldata_register_ops(struct appldata_ops *ops)
+{
+	struct list_head *lh;
+	struct appldata_ops *tmp_ops;
+	int i;
+
+	i = 0;
+
+	if ((ops->size > APPLDATA_MAX_REC_SIZE) ||
+		(ops->size < 0)){
+		P_ERROR("Invalid size of %s record = %i, maximum = %i!\n",
+			ops->name, ops->size, APPLDATA_MAX_REC_SIZE);
+		return -ENOMEM;
+	}
+	if ((ops->ctl_nr == CTL_APPLDATA) ||
+	    (ops->ctl_nr == CTL_APPLDATA_TIMER) ||
+	    (ops->ctl_nr == CTL_APPLDATA_INTERVAL)) {
+		P_ERROR("ctl_nr %i already in use!\n", ops->ctl_nr);
+		return -EBUSY;
+	}
+	ops->ctl_table = kmalloc(4*sizeof(struct ctl_table), GFP_KERNEL);
+	if (ops->ctl_table == NULL) {
+		P_ERROR("Not enough memory for %s ctl_table!\n", ops->name);
+		return -ENOMEM;
+	}
+	memset(ops->ctl_table, 0, 4*sizeof(struct ctl_table));
+
+	spin_lock_bh(&appldata_ops_lock);
+	list_for_each(lh, &appldata_ops_list) {
+		tmp_ops = list_entry(lh, struct appldata_ops, list);
+		P_DEBUG("register_ops loop: %i) name = %s, ctl = %i\n",
+			++i, tmp_ops->name, tmp_ops->ctl_nr);
+		P_DEBUG("Comparing %s (ctl %i) with %s (ctl %i)\n",
+			tmp_ops->name, tmp_ops->ctl_nr, ops->name,
+			ops->ctl_nr);
+		if (strncmp(tmp_ops->name, ops->name,
+				APPLDATA_PROC_NAME_LENGTH) == 0) {
+			P_ERROR("Name \"%s\" already registered!\n", ops->name);
+			kfree(ops->ctl_table);
+			spin_unlock_bh(&appldata_ops_lock);
+			return -EBUSY;
+		}
+		if (tmp_ops->ctl_nr == ops->ctl_nr) {
+			P_ERROR("ctl_nr %i already registered!\n", ops->ctl_nr);
+			kfree(ops->ctl_table);
+			spin_unlock_bh(&appldata_ops_lock);
+			return -EBUSY;
+		}
+	}
+	list_add(&ops->list, &appldata_ops_list);
+	spin_unlock_bh(&appldata_ops_lock);
+
+	ops->ctl_table[0].ctl_name = CTL_APPLDATA;
+	ops->ctl_table[0].procname = appldata_proc_name;
+	ops->ctl_table[0].maxlen   = 0;
+	ops->ctl_table[0].mode     = S_IRUGO | S_IXUGO;
+	ops->ctl_table[0].child    = &ops->ctl_table[2];
+
+	ops->ctl_table[1].ctl_name = 0;
+
+	ops->ctl_table[2].ctl_name = ops->ctl_nr;
+	ops->ctl_table[2].procname = ops->name;
+	ops->ctl_table[2].mode     = S_IRUGO | S_IWUSR;
+	ops->ctl_table[2].proc_handler = appldata_generic_handler;
+	ops->ctl_table[2].data = ops;
+
+	ops->ctl_table[3].ctl_name = 0;
+
+	ops->sysctl_header = register_sysctl_table(ops->ctl_table,1);
+
+	P_INFO("%s-ops registered!\n", ops->name);
+	return 0;
+}
+
+/*
+ * appldata_unregister_ops()
+ *
+ * update ops list, unregister /proc entries, stop DIAG if necessary
+ */
+void appldata_unregister_ops(struct appldata_ops *ops)
+{
+	spin_lock_bh(&appldata_ops_lock);
+	unregister_sysctl_table(ops->sysctl_header);
+	list_del(&ops->list);
+	kfree(ops->ctl_table);
+	ops->ctl_table = NULL;
+	spin_unlock_bh(&appldata_ops_lock);
+	P_INFO("%s-ops unregistered!\n", ops->name);
+}
+/********************** module-ops management <END> **************************/
+
+
+/******************************* init / exit *********************************/
+
+static void
+appldata_online_cpu(int cpu)
+{
+	init_virt_timer(&per_cpu(appldata_timer, cpu));
+	per_cpu(appldata_timer, cpu).function = appldata_timer_function;
+	per_cpu(appldata_timer, cpu).data = (unsigned long)
+		&appldata_tasklet_struct;
+	atomic_inc(&appldata_expire_count);
+	spin_lock(&appldata_timer_lock);
+	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
+	spin_unlock(&appldata_timer_lock);
+}
+
+static void
+appldata_offline_cpu(int cpu)
+{
+	del_virt_timer(&per_cpu(appldata_timer, cpu));
+	if (atomic_dec_and_test(&appldata_expire_count)) {
+		atomic_set(&appldata_expire_count, num_online_cpus());
+		tasklet_schedule(&appldata_tasklet_struct);
+	}
+	spin_lock(&appldata_timer_lock);
+	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
+	spin_unlock(&appldata_timer_lock);
+}
+
+static int
+appldata_cpu_notify(struct notifier_block *self,
+		    unsigned long action, void *hcpu)
+{
+	switch (action) {
+	case CPU_ONLINE:
+		appldata_online_cpu((long) hcpu);
+		break;
+#ifdef CONFIG_HOTPLUG_CPU
+	case CPU_DEAD:
+		appldata_offline_cpu((long) hcpu);
+		break;
+#endif
+	default:
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block __devinitdata appldata_nb = {
+	.notifier_call = appldata_cpu_notify,
+};
+
+/*
+ * appldata_init()
+ *
+ * init timer and tasklet, register /proc entries
+ */
+static int __init appldata_init(void)
+{
+	int i;
+
+	P_DEBUG("sizeof(parameter_list) = %lu\n",
+		sizeof(struct appldata_parameter_list));
+
+	for_each_online_cpu(i)
+		appldata_online_cpu(i);
+
+	/* Register cpu hotplug notifier */
+	register_cpu_notifier(&appldata_nb);
+
+	appldata_sysctl_header = register_sysctl_table(appldata_dir_table, 1);
+#ifdef MODULE
+	appldata_dir_table[0].de->owner = THIS_MODULE;
+	appldata_table[0].de->owner = THIS_MODULE;
+	appldata_table[1].de->owner = THIS_MODULE;
+#endif
+
+	tasklet_init(&appldata_tasklet_struct, appldata_tasklet_function, 0);
+	P_DEBUG("Base interface initialized.\n");
+	return 0;
+}
+
+/*
+ * appldata_exit()
+ *
+ * stop timer and tasklet, unregister /proc entries
+ */
+static void __exit appldata_exit(void)
+{
+	struct list_head *lh;
+	struct appldata_ops *ops;
+	int rc, i;
+
+	P_DEBUG("Unloading module ...\n");
+	/*
+	 * ops list should be empty, but just in case something went wrong...
+	 */
+	spin_lock_bh(&appldata_ops_lock);
+	list_for_each(lh, &appldata_ops_list) {
+		ops = list_entry(lh, struct appldata_ops, list);
+		rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
+				(unsigned long) ops->data, ops->size);
+		if (rc != 0) {
+			P_ERROR("STOP DIAG 0xDC for %s failed, "
+				"return code: %d\n", ops->name, rc);
+		}
+	}
+	spin_unlock_bh(&appldata_ops_lock);
+
+	for_each_online_cpu(i)
+		appldata_offline_cpu(i);
+
+	appldata_timer_active = 0;
+
+	unregister_sysctl_table(appldata_sysctl_header);
+
+	tasklet_kill(&appldata_tasklet_struct);
+	P_DEBUG("... module unloaded!\n");
+}
+/**************************** init / exit <END> ******************************/
+
+
+module_init(appldata_init);
+module_exit(appldata_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Gerald Schaefer");
+MODULE_DESCRIPTION("Linux-VM Monitor Stream, base infrastructure");
+
+EXPORT_SYMBOL_GPL(appldata_register_ops);
+EXPORT_SYMBOL_GPL(appldata_unregister_ops);
+
+#ifdef MODULE
+/*
+ * Kernel symbols needed by appldata_mem and appldata_os modules.
+ * However, if this file is compiled as a module (for testing only), these
+ * symbols are not exported. In this case, we define them locally and export
+ * those.
+ */
+void si_swapinfo(struct sysinfo *val)
+{
+	val->freeswap = -1ul;
+	val->totalswap = -1ul;
+}
+
+unsigned long avenrun[3] = {-1 - FIXED_1/200, -1 - FIXED_1/200,
+				-1 - FIXED_1/200};
+int nr_threads = -1;
+
+void get_full_page_state(struct page_state *ps)
+{
+	memset(ps, -1, sizeof(struct page_state));
+}
+
+unsigned long nr_running(void)
+{
+	return -1;
+}
+
+unsigned long nr_iowait(void)
+{
+	return -1;
+}
+
+/*unsigned long nr_context_switches(void)
+{
+	return -1;
+}*/
+#endif /* MODULE */
+EXPORT_SYMBOL_GPL(si_swapinfo);
+EXPORT_SYMBOL_GPL(nr_threads);
+EXPORT_SYMBOL_GPL(avenrun);
+EXPORT_SYMBOL_GPL(get_full_page_state);
+EXPORT_SYMBOL_GPL(nr_running);
+EXPORT_SYMBOL_GPL(nr_iowait);
+//EXPORT_SYMBOL_GPL(nr_context_switches);