[deliverable/linux.git] / drivers / staging / lustre / lustre / obdclass / class_obd.c

/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright (c) 2011, 2012, Intel Corporation.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 */

#define DEBUG_SUBSYSTEM S_CLASS
# include <linux/atomic.h>

#include "../include/obd_support.h"
#include "../include/obd_class.h"
#include "../../include/linux/lnet/lnetctl.h"
#include "../include/lustre_debug.h"
#include "../include/lprocfs_status.h"
#include "../include/lustre/lustre_build_version.h"
#include <linux/list.h>
#include "../include/cl_object.h"
#include "llog_internal.h"


struct obd_device *obd_devs[MAX_OBD_DEVICES];
EXPORT_SYMBOL(obd_devs);
struct list_head obd_types;
DEFINE_RWLOCK(obd_dev_lock);

__u64 obd_max_pages;
EXPORT_SYMBOL(obd_max_pages);
__u64 obd_max_alloc;
EXPORT_SYMBOL(obd_max_alloc);
__u64 obd_alloc;
EXPORT_SYMBOL(obd_alloc);
__u64 obd_pages;
EXPORT_SYMBOL(obd_pages);
static DEFINE_SPINLOCK(obd_updatemax_lock);

/* The following are visible and mutable through /proc/sys/lustre/. */
unsigned int obd_debug_peer_on_timeout;
EXPORT_SYMBOL(obd_debug_peer_on_timeout);
unsigned int obd_dump_on_timeout;
EXPORT_SYMBOL(obd_dump_on_timeout);
unsigned int obd_dump_on_eviction;
EXPORT_SYMBOL(obd_dump_on_eviction);
unsigned int obd_max_dirty_pages = 256;
EXPORT_SYMBOL(obd_max_dirty_pages);
atomic_t obd_dirty_pages;
EXPORT_SYMBOL(obd_dirty_pages);
unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
EXPORT_SYMBOL(obd_timeout);
unsigned int obd_timeout_set;
EXPORT_SYMBOL(obd_timeout_set);
/* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
unsigned int at_min;
EXPORT_SYMBOL(at_min);
unsigned int at_max = 600;
EXPORT_SYMBOL(at_max);
unsigned int at_history = 600;
EXPORT_SYMBOL(at_history);
int at_early_margin = 5;
EXPORT_SYMBOL(at_early_margin);
int at_extra = 30;
EXPORT_SYMBOL(at_extra);

atomic_t obd_dirty_transit_pages;
EXPORT_SYMBOL(obd_dirty_transit_pages);

char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
EXPORT_SYMBOL(obd_jobid_var);

char obd_jobid_node[JOBSTATS_JOBID_SIZE + 1];

/* Get jobid of current process from stored variable or calculate
 * it from pid and user_id.
 *
 * Historically this was also done by reading the environment variable
 * stored in between the "env_start" & "env_end" of task struct.
 * This is now deprecated.
 */
int lustre_get_jobid(char *jobid)
{
	memset(jobid, 0, JOBSTATS_JOBID_SIZE);
	/* Jobstats isn't enabled */
	if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0)
		return 0;

	/* Use process name + fsuid as jobid */
	if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) {
		snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s.%u",
			 current_comm(),
			 from_kuid(&init_user_ns, current_fsuid()));
		return 0;
	}

	/* Whole node dedicated to single job */
	if (strcmp(obd_jobid_var, JOBSTATS_NODELOCAL) == 0) {
		strcpy(jobid, obd_jobid_node);
		return 0;
	}

	return -ENOENT;
}
EXPORT_SYMBOL(lustre_get_jobid);

static inline void obd_data2conn(struct lustre_handle *conn,
				 struct obd_ioctl_data *data)
{
	memset(conn, 0, sizeof(*conn));
	conn->cookie = data->ioc_cookie;
}

static inline void obd_conn2data(struct obd_ioctl_data *data,
				 struct lustre_handle *conn)
{
	data->ioc_cookie = conn->cookie;
}

int class_resolve_dev_name(__u32 len, const char *name)
{
	int rc;
	int dev;

	if (!len || !name) {
		CERROR("No name passed,!\n");
		rc = -EINVAL;
		goto out;
	}
	if (name[len - 1] != 0) {
		CERROR("Name not nul terminated!\n");
		rc = -EINVAL;
		goto out;
	}

	CDEBUG(D_IOCTL, "device name %s\n", name);
	dev = class_name2dev(name);
	if (dev == -1) {
		CDEBUG(D_IOCTL, "No device for name %s!\n", name);
		rc = -EINVAL;
		goto out;
	}

	CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
	rc = dev;

out:
	return rc;
}

int class_handle_ioctl(unsigned int cmd, unsigned long arg)
{
	char *buf = NULL;
	struct obd_ioctl_data *data;
	struct libcfs_debug_ioctl_data *debug_data;
	struct obd_device *obd = NULL;
	int err = 0, len = 0;

	/* only for debugging */
	if (cmd == LIBCFS_IOC_DEBUG_MASK) {
		debug_data = (struct libcfs_debug_ioctl_data *)arg;
		libcfs_subsystem_debug = debug_data->subs;
		libcfs_debug = debug_data->debug;
		return 0;
	}

	CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
	if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
		CERROR("OBD ioctl: data error\n");
		return -EINVAL;
	}
	data = (struct obd_ioctl_data *)buf;

	switch (cmd) {
	case OBD_IOC_PROCESS_CFG: {
		struct lustre_cfg *lcfg;

		if (!data->ioc_plen1 || !data->ioc_pbuf1) {
			CERROR("No config buffer passed!\n");
			err = -EINVAL;
			goto out;
		}
		lcfg = kzalloc(data->ioc_plen1, GFP_NOFS);
		if (!lcfg) {
			err = -ENOMEM;
			goto out;
		}
		err = copy_from_user(lcfg, data->ioc_pbuf1,
					 data->ioc_plen1);
		if (!err)
			err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
		if (!err)
			err = class_process_config(lcfg);

		kfree(lcfg);
		goto out;
	}

	case OBD_GET_VERSION:
		if (!data->ioc_inlbuf1) {
			CERROR("No buffer passed in ioctl\n");
			err = -EINVAL;
			goto out;
		}

		if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
			CERROR("ioctl buffer too small to hold version\n");
			err = -EINVAL;
			goto out;
		}

		memcpy(data->ioc_bulk, BUILD_VERSION,
		       strlen(BUILD_VERSION) + 1);

		err = obd_ioctl_popdata((void *)arg, data, len);
		if (err)
			err = -EFAULT;
		goto out;

	case OBD_IOC_NAME2DEV: {
		/* Resolve a device name.  This does not change the
		 * currently selected device.
		 */
		int dev;

		dev = class_resolve_dev_name(data->ioc_inllen1,
					     data->ioc_inlbuf1);
		data->ioc_dev = dev;
		if (dev < 0) {
			err = -EINVAL;
			goto out;
		}

		err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
		if (err)
			err = -EFAULT;
		goto out;
	}

	case OBD_IOC_UUID2DEV: {
		/* Resolve a device uuid.  This does not change the
		 * currently selected device.
		 */
		int dev;
		struct obd_uuid uuid;

		if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
			CERROR("No UUID passed!\n");
			err = -EINVAL;
			goto out;
		}
		if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
			CERROR("UUID not NUL terminated!\n");
			err = -EINVAL;
			goto out;
		}

		CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
		obd_str2uuid(&uuid, data->ioc_inlbuf1);
		dev = class_uuid2dev(&uuid);
		data->ioc_dev = dev;
		if (dev == -1) {
			CDEBUG(D_IOCTL, "No device for UUID %s!\n",
			       data->ioc_inlbuf1);
			err = -EINVAL;
			goto out;
		}

		CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
		       dev);
		err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
		if (err)
			err = -EFAULT;
		goto out;
	}

	case OBD_IOC_CLOSE_UUID: {
		CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
		       data->ioc_inlbuf1);
		err = 0;
		goto out;
	}

	case OBD_IOC_GETDEVICE: {
		int     index = data->ioc_count;
		char    *status, *str;

		if (!data->ioc_inlbuf1) {
			CERROR("No buffer passed in ioctl\n");
			err = -EINVAL;
			goto out;
		}
		if (data->ioc_inllen1 < 128) {
			CERROR("ioctl buffer too small to hold version\n");
			err = -EINVAL;
			goto out;
		}

		obd = class_num2obd(index);
		if (!obd) {
			err = -ENOENT;
			goto out;
		}

		if (obd->obd_stopping)
			status = "ST";
		else if (obd->obd_set_up)
			status = "UP";
		else if (obd->obd_attached)
			status = "AT";
		else
			status = "--";
		str = (char *)data->ioc_bulk;
		snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
			 (int)index, status, obd->obd_type->typ_name,
			 obd->obd_name, obd->obd_uuid.uuid,
			 atomic_read(&obd->obd_refcount));
		err = obd_ioctl_popdata((void *)arg, data, len);

		err = 0;
		goto out;
	}

	}

	if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
		if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL) {
			err = -EINVAL;
			goto out;
		}
		if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME) {
			err = -EINVAL;
			goto out;
		}
		obd = class_name2obd(data->ioc_inlbuf4);
	} else if (data->ioc_dev < class_devno_max()) {
		obd = class_num2obd(data->ioc_dev);
	} else {
		CERROR("OBD ioctl: No device\n");
		err = -EINVAL;
		goto out;
	}

	if (obd == NULL) {
		CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
		err = -EINVAL;
		goto out;
	}
	LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);

	if (!obd->obd_set_up || obd->obd_stopping) {
		CERROR("OBD ioctl: device not setup %d\n", data->ioc_dev);
		err = -EINVAL;
		goto out;
	}

	switch (cmd) {
	case OBD_IOC_NO_TRANSNO: {
		if (!obd->obd_attached) {
			CERROR("Device %d not attached\n", obd->obd_minor);
			err = -ENODEV;
			goto out;
		}
		CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
		       obd->obd_name);
		obd->obd_no_transno = 1;
		err = 0;
		goto out;
	}

	default: {
		err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
		if (err)
			goto out;

		err = obd_ioctl_popdata((void *)arg, data, len);
		if (err)
			err = -EFAULT;
		goto out;
	}
	}

 out:
	if (buf)
		obd_ioctl_freedata(buf, len);
	return err;
} /* class_handle_ioctl */

#define OBD_INIT_CHECK
int obd_init_checks(void)
{
	__u64 u64val, div64val;
	char buf[64];
	int len, ret = 0;

	CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", "%llu", "%lld", "%#llx");

	CDEBUG(D_INFO, "OBD_OBJECT_EOF = %#llx\n", (__u64)OBD_OBJECT_EOF);

	u64val = OBD_OBJECT_EOF;
	CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
	if (u64val != OBD_OBJECT_EOF) {
		CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
		       u64val, (int)sizeof(u64val));
		ret = -EINVAL;
	}
	len = snprintf(buf, sizeof(buf), "%#llx", u64val);
	if (len != 18) {
		CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
		ret = -EINVAL;
	}

	div64val = OBD_OBJECT_EOF;
	CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
	if (u64val != OBD_OBJECT_EOF) {
		CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
		       u64val, (int)sizeof(u64val));
		ret = -EOVERFLOW;
	}
	if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
		CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
		       u64val, (int)sizeof(u64val));
		return -EOVERFLOW;
	}
	if (do_div(div64val, 256) != (u64val & 255)) {
		CERROR("do_div(%#llx,256) != %llu\n", u64val, u64val & 255);
		return -EOVERFLOW;
	}
	if (u64val >> 8 != div64val) {
		CERROR("do_div(%#llx,256) %llu != %llu\n",
		       u64val, div64val, u64val >> 8);
		return -EOVERFLOW;
	}
	len = snprintf(buf, sizeof(buf), "%#llx", u64val);
	if (len != 18) {
		CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
		ret = -EINVAL;
	}
	len = snprintf(buf, sizeof(buf), "%llu", u64val);
	if (len != 20) {
		CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
		ret = -EINVAL;
	}
	len = snprintf(buf, sizeof(buf), "%lld", u64val);
	if (len != 2) {
		CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
		ret = -EINVAL;
	}
	if ((u64val & ~CFS_PAGE_MASK) >= PAGE_CACHE_SIZE) {
		CWARN("mask failed: u64val %llu >= %llu\n", u64val,
		      (__u64)PAGE_CACHE_SIZE);
		ret = -EINVAL;
	}

	return ret;
}

extern int class_procfs_init(void);
extern int class_procfs_clean(void);

static int __init init_obdclass(void)
{
	int i, err;
	int lustre_register_fs(void);

	for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
		INIT_LIST_HEAD(&capa_list[i]);

	LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");

	spin_lock_init(&obd_types_lock);
	obd_zombie_impexp_init();

	obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
					 LPROCFS_STATS_FLAG_NONE |
					 LPROCFS_STATS_FLAG_IRQ_SAFE);

	if (obd_memory == NULL) {
		CERROR("kmalloc of 'obd_memory' failed\n");
		return -ENOMEM;
	}

	lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
			     LPROCFS_CNTR_AVGMINMAX,
			     "memused", "bytes");
	lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
			     LPROCFS_CNTR_AVGMINMAX,
			     "pagesused", "pages");

	err = obd_init_checks();
	if (err == -EOVERFLOW)
		return err;

	class_init_uuidlist();
	err = class_handle_init();
	if (err)
		return err;

	INIT_LIST_HEAD(&obd_types);

	err = misc_register(&obd_psdev);
	if (err) {
		CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
		return err;
	}

	/* This struct is already zeroed for us (static global) */
	for (i = 0; i < class_devno_max(); i++)
		obd_devs[i] = NULL;

	/* Default the dirty page cache cap to 1/2 of system memory.
	 * For clients with less memory, a larger fraction is needed
	 * for other purposes (mostly for BGL). */
	if (totalram_pages <= 512 << (20 - PAGE_CACHE_SHIFT))
		obd_max_dirty_pages = totalram_pages / 4;
	else
		obd_max_dirty_pages = totalram_pages / 2;

	err = obd_init_caches();
	if (err)
		return err;

	err = class_procfs_init();
	if (err)
		return err;

	err = obd_sysctl_init();
	if (err)
		return err;

	err = lu_global_init();
	if (err)
		return err;

	err = cl_global_init();
	if (err != 0)
		return err;


	err = llog_info_init();
	if (err)
		return err;

	err = lustre_register_fs();

	return err;
}

void obd_update_maxusage(void)
{
	__u64 max1, max2;

	max1 = obd_pages_sum();
	max2 = obd_memory_sum();

	spin_lock(&obd_updatemax_lock);
	if (max1 > obd_max_pages)
		obd_max_pages = max1;
	if (max2 > obd_max_alloc)
		obd_max_alloc = max2;
	spin_unlock(&obd_updatemax_lock);
}
EXPORT_SYMBOL(obd_update_maxusage);

__u64 obd_memory_max(void)
{
	__u64 ret;

	spin_lock(&obd_updatemax_lock);
	ret = obd_max_alloc;
	spin_unlock(&obd_updatemax_lock);

	return ret;
}
EXPORT_SYMBOL(obd_memory_max);

__u64 obd_pages_max(void)
{
	__u64 ret;

	spin_lock(&obd_updatemax_lock);
	ret = obd_max_pages;
	spin_unlock(&obd_updatemax_lock);

	return ret;
}
EXPORT_SYMBOL(obd_pages_max);

/* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 * ifdef to the end of the file to cover module and versioning goo.*/
static void cleanup_obdclass(void)
{
	int i;
	int lustre_unregister_fs(void);
	__u64 memory_leaked, pages_leaked;
	__u64 memory_max, pages_max;

	lustre_unregister_fs();

	misc_deregister(&obd_psdev);
	for (i = 0; i < class_devno_max(); i++) {
		struct obd_device *obd = class_num2obd(i);
		if (obd && obd->obd_set_up &&
		    OBT(obd) && OBP(obd, detach)) {
			/* XXX should this call generic detach otherwise? */
			LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
			OBP(obd, detach)(obd);
		}
	}
	llog_info_fini();
	cl_global_fini();
	lu_global_fini();

	obd_cleanup_caches();

	class_procfs_clean();

	class_handle_cleanup();
	class_exit_uuidlist();
	obd_zombie_impexp_stop();

	memory_leaked = obd_memory_sum();
	pages_leaked = obd_pages_sum();

	memory_max = obd_memory_max();
	pages_max = obd_pages_max();

	lprocfs_free_stats(&obd_memory);
	CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
	       "obd_memory max: %llu, leaked: %llu\n",
	       memory_max, memory_leaked);
	CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
	       "obd_memory_pages max: %llu, leaked: %llu\n",
	       pages_max, pages_leaked);
}

MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
MODULE_LICENSE("GPL");
MODULE_VERSION(LUSTRE_VERSION_STRING);

module_init(init_obdclass);
module_exit(cleanup_obdclass);
Commit	Line	Data
d7e09d03 PT	1	/*
	2	* GPL HEADER START
	3	*
	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 only,
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License version 2 for more details (a copy is included
	14	* in the LICENSE file that accompanied this code).
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* version 2 along with this program; If not, see
	18	* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
	19	*
	20	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	21	* CA 95054 USA or visit www.sun.com if you need additional information or
	22	* have any questions.
	23	*
	24	* GPL HEADER END
	25	*/
	26	/*
	27	* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
	28	* Use is subject to license terms.
	29	*
	30	* Copyright (c) 2011, 2012, Intel Corporation.
	31	*/
	32	/*
	33	* This file is part of Lustre, http://www.lustre.org/
	34	* Lustre is a trademark of Sun Microsystems, Inc.
	35	*/
	36
	37	#define DEBUG_SUBSYSTEM S_CLASS
e409842a	38	# include <linux/atomic.h>
d7e09d03	39
610f7377 GKH	40	#include "../include/obd_support.h"
610f7377 GKH	41	#include "../include/obd_class.h"
9fdaf8c0	42	#include "../../include/linux/lnet/lnetctl.h"
610f7377 GKH	43	#include "../include/lustre_debug.h"
	44	#include "../include/lprocfs_status.h"
	45	#include "../include/lustre/lustre_build_version.h"
d7e09d03	46	#include <linux/list.h>
610f7377	47	#include "../include/cl_object.h"
d7e09d03 PT	48	#include "llog_internal.h"
	49
	50
	51	struct obd_device *obd_devs[MAX_OBD_DEVICES];
	52	EXPORT_SYMBOL(obd_devs);
	53	struct list_head obd_types;
	54	DEFINE_RWLOCK(obd_dev_lock);
	55
ea28d21a	56	__u64 obd_max_pages;
9d2834dd	57	EXPORT_SYMBOL(obd_max_pages);
ea28d21a	58	__u64 obd_max_alloc;
9d2834dd PT	59	EXPORT_SYMBOL(obd_max_alloc);
	60	__u64 obd_alloc;
	61	EXPORT_SYMBOL(obd_alloc);
	62	__u64 obd_pages;
	63	EXPORT_SYMBOL(obd_pages);
6acbd752	64	static DEFINE_SPINLOCK(obd_updatemax_lock);
d7e09d03 PT	65
d7e09d03 PT	66	/* The following are visible and mutable through /proc/sys/lustre/. */
d7e09d03 PT	67	unsigned int obd_debug_peer_on_timeout;
	68	EXPORT_SYMBOL(obd_debug_peer_on_timeout);
	69	unsigned int obd_dump_on_timeout;
	70	EXPORT_SYMBOL(obd_dump_on_timeout);
	71	unsigned int obd_dump_on_eviction;
	72	EXPORT_SYMBOL(obd_dump_on_eviction);
	73	unsigned int obd_max_dirty_pages = 256;
	74	EXPORT_SYMBOL(obd_max_dirty_pages);
d7e09d03 PT	75	atomic_t obd_dirty_pages;
	76	EXPORT_SYMBOL(obd_dirty_pages);
	77	unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */
	78	EXPORT_SYMBOL(obd_timeout);
d7e09d03 PT	79	unsigned int obd_timeout_set;
d7e09d03 PT	80	EXPORT_SYMBOL(obd_timeout_set);
d7e09d03	81	/* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
ea28d21a	82	unsigned int at_min;
d7e09d03 PT	83	EXPORT_SYMBOL(at_min);
	84	unsigned int at_max = 600;
	85	EXPORT_SYMBOL(at_max);
	86	unsigned int at_history = 600;
	87	EXPORT_SYMBOL(at_history);
	88	int at_early_margin = 5;
	89	EXPORT_SYMBOL(at_early_margin);
	90	int at_extra = 30;
	91	EXPORT_SYMBOL(at_extra);
	92
	93	atomic_t obd_dirty_transit_pages;
	94	EXPORT_SYMBOL(obd_dirty_transit_pages);
	95
	96	char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
	97	EXPORT_SYMBOL(obd_jobid_var);
	98
76133e66 OD	99	char obd_jobid_node[JOBSTATS_JOBID_SIZE + 1];
	100
	101	/* Get jobid of current process from stored variable or calculate
	102	* it from pid and user_id.
d7e09d03	103	*
76133e66 OD	104	* Historically this was also done by reading the environment variable
	105	* stored in between the "env_start" & "env_end" of task struct.
	106	* This is now deprecated.
d7e09d03 PT	107	*/
	108	int lustre_get_jobid(char *jobid)
	109	{
d7e09d03 PT	110	memset(jobid, 0, JOBSTATS_JOBID_SIZE);
	111	/* Jobstats isn't enabled */
	112	if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0)
0a3bdb00	113	return 0;
d7e09d03 PT	114
	115	/* Use process name + fsuid as jobid */
	116	if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) {
	117	snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s.%u",
4b1a25f0 PT	118	current_comm(),
4b1a25f0 PT	119	from_kuid(&init_user_ns, current_fsuid()));
0a3bdb00	120	return 0;
d7e09d03 PT	121	}
d7e09d03 PT	122
76133e66 OD	123	/* Whole node dedicated to single job */
	124	if (strcmp(obd_jobid_var, JOBSTATS_NODELOCAL) == 0) {
	125	strcpy(jobid, obd_jobid_node);
	126	return 0;
d7e09d03	127	}
76133e66 OD	128
76133e66 OD	129	return -ENOENT;
d7e09d03 PT	130	}
	131	EXPORT_SYMBOL(lustre_get_jobid);
	132
d7e09d03 PT	133	static inline void obd_data2conn(struct lustre_handle *conn,
	134	struct obd_ioctl_data *data)
	135	{
ec83e611	136	memset(conn, 0, sizeof(*conn));
d7e09d03 PT	137	conn->cookie = data->ioc_cookie;
	138	}
	139
	140	static inline void obd_conn2data(struct obd_ioctl_data *data,
	141	struct lustre_handle *conn)
	142	{
	143	data->ioc_cookie = conn->cookie;
	144	}
	145
	146	int class_resolve_dev_name(__u32 len, const char *name)
	147	{
	148	int rc;
	149	int dev;
	150
d7e09d03 PT	151	if (!len \|\| !name) {
d7e09d03 PT	152	CERROR("No name passed,!\n");
d212afd9 JL	153	rc = -EINVAL;
d212afd9 JL	154	goto out;
d7e09d03 PT	155	}
	156	if (name[len - 1] != 0) {
	157	CERROR("Name not nul terminated!\n");
d212afd9 JL	158	rc = -EINVAL;
d212afd9 JL	159	goto out;
d7e09d03 PT	160	}
	161
	162	CDEBUG(D_IOCTL, "device name %s\n", name);
	163	dev = class_name2dev(name);
	164	if (dev == -1) {
	165	CDEBUG(D_IOCTL, "No device for name %s!\n", name);
d212afd9 JL	166	rc = -EINVAL;
d212afd9 JL	167	goto out;
d7e09d03 PT	168	}
	169
	170	CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
	171	rc = dev;
	172
	173	out:
0a3bdb00	174	return rc;
d7e09d03 PT	175	}
	176
	177	int class_handle_ioctl(unsigned int cmd, unsigned long arg)
	178	{
	179	char *buf = NULL;
	180	struct obd_ioctl_data *data;
	181	struct libcfs_debug_ioctl_data *debug_data;
	182	struct obd_device *obd = NULL;
	183	int err = 0, len = 0;
d7e09d03 PT	184
	185	/* only for debugging */
	186	if (cmd == LIBCFS_IOC_DEBUG_MASK) {
bdbb0512	187	debug_data = (struct libcfs_debug_ioctl_data *)arg;
d7e09d03 PT	188	libcfs_subsystem_debug = debug_data->subs;
	189	libcfs_debug = debug_data->debug;
	190	return 0;
	191	}
	192
	193	CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
	194	if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
	195	CERROR("OBD ioctl: data error\n");
0a3bdb00	196	return -EINVAL;
d7e09d03 PT	197	}
	198	data = (struct obd_ioctl_data *)buf;
	199
	200	switch (cmd) {
	201	case OBD_IOC_PROCESS_CFG: {
	202	struct lustre_cfg *lcfg;
	203
	204	if (!data->ioc_plen1 \|\| !data->ioc_pbuf1) {
	205	CERROR("No config buffer passed!\n");
d212afd9 JL	206	err = -EINVAL;
d212afd9 JL	207	goto out;
d7e09d03	208	}
d7279044	209	lcfg = kzalloc(data->ioc_plen1, GFP_NOFS);
485640b5	210	if (!lcfg) {
d212afd9 JL	211	err = -ENOMEM;
	212	goto out;
	213	}
d7e09d03 PT	214	err = copy_from_user(lcfg, data->ioc_pbuf1,
	215	data->ioc_plen1);
	216	if (!err)
	217	err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
	218	if (!err)
	219	err = class_process_config(lcfg);
	220
d7279044	221	kfree(lcfg);
d212afd9	222	goto out;
d7e09d03 PT	223	}
	224
	225	case OBD_GET_VERSION:
	226	if (!data->ioc_inlbuf1) {
	227	CERROR("No buffer passed in ioctl\n");
d212afd9 JL	228	err = -EINVAL;
d212afd9 JL	229	goto out;
d7e09d03 PT	230	}
	231
	232	if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
	233	CERROR("ioctl buffer too small to hold version\n");
d212afd9 JL	234	err = -EINVAL;
d212afd9 JL	235	goto out;
d7e09d03 PT	236	}
	237
	238	memcpy(data->ioc_bulk, BUILD_VERSION,
	239	strlen(BUILD_VERSION) + 1);
	240
	241	err = obd_ioctl_popdata((void *)arg, data, len);
	242	if (err)
	243	err = -EFAULT;
d212afd9	244	goto out;
d7e09d03 PT	245
	246	case OBD_IOC_NAME2DEV: {
	247	/* Resolve a device name. This does not change the
	248	* currently selected device.
	249	*/
	250	int dev;
	251
	252	dev = class_resolve_dev_name(data->ioc_inllen1,
	253	data->ioc_inlbuf1);
	254	data->ioc_dev = dev;
d212afd9 JL	255	if (dev < 0) {
	256	err = -EINVAL;
	257	goto out;
	258	}
d7e09d03 PT	259
	260	err = obd_ioctl_popdata((void )arg, data, sizeof(data));
	261	if (err)
	262	err = -EFAULT;
d212afd9	263	goto out;
d7e09d03 PT	264	}
	265
	266	case OBD_IOC_UUID2DEV: {
	267	/* Resolve a device uuid. This does not change the
	268	* currently selected device.
	269	*/
	270	int dev;
	271	struct obd_uuid uuid;
	272
	273	if (!data->ioc_inllen1 \|\| !data->ioc_inlbuf1) {
	274	CERROR("No UUID passed!\n");
d212afd9 JL	275	err = -EINVAL;
d212afd9 JL	276	goto out;
d7e09d03 PT	277	}
	278	if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
	279	CERROR("UUID not NUL terminated!\n");
d212afd9 JL	280	err = -EINVAL;
d212afd9 JL	281	goto out;
d7e09d03 PT	282	}
	283
	284	CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
	285	obd_str2uuid(&uuid, data->ioc_inlbuf1);
	286	dev = class_uuid2dev(&uuid);
	287	data->ioc_dev = dev;
	288	if (dev == -1) {
	289	CDEBUG(D_IOCTL, "No device for UUID %s!\n",
	290	data->ioc_inlbuf1);
d212afd9 JL	291	err = -EINVAL;
d212afd9 JL	292	goto out;
d7e09d03 PT	293	}
	294
	295	CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
	296	dev);
	297	err = obd_ioctl_popdata((void )arg, data, sizeof(data));
	298	if (err)
	299	err = -EFAULT;
d212afd9	300	goto out;
d7e09d03 PT	301	}
	302
	303	case OBD_IOC_CLOSE_UUID: {
	304	CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
	305	data->ioc_inlbuf1);
d212afd9 JL	306	err = 0;
d212afd9 JL	307	goto out;
d7e09d03 PT	308	}
	309
	310	case OBD_IOC_GETDEVICE: {
	311	int index = data->ioc_count;
	312	char status, str;
	313
	314	if (!data->ioc_inlbuf1) {
	315	CERROR("No buffer passed in ioctl\n");
d212afd9 JL	316	err = -EINVAL;
d212afd9 JL	317	goto out;
d7e09d03 PT	318	}
	319	if (data->ioc_inllen1 < 128) {
	320	CERROR("ioctl buffer too small to hold version\n");
d212afd9 JL	321	err = -EINVAL;
d212afd9 JL	322	goto out;
d7e09d03 PT	323	}
	324
	325	obd = class_num2obd(index);
d212afd9 JL	326	if (!obd) {
	327	err = -ENOENT;
	328	goto out;
	329	}
d7e09d03 PT	330
	331	if (obd->obd_stopping)
	332	status = "ST";
	333	else if (obd->obd_set_up)
	334	status = "UP";
	335	else if (obd->obd_attached)
	336	status = "AT";
	337	else
	338	status = "--";
	339	str = (char *)data->ioc_bulk;
	340	snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
	341	(int)index, status, obd->obd_type->typ_name,
	342	obd->obd_name, obd->obd_uuid.uuid,
	343	atomic_read(&obd->obd_refcount));
	344	err = obd_ioctl_popdata((void *)arg, data, len);
	345
d212afd9 JL	346	err = 0;
d212afd9 JL	347	goto out;
d7e09d03 PT	348	}
	349
	350	}
	351
	352	if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
d212afd9 JL	353	if (data->ioc_inllen4 <= 0 \|\| data->ioc_inlbuf4 == NULL) {
	354	err = -EINVAL;
	355	goto out;
	356	}
	357	if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME) {
	358	err = -EINVAL;
	359	goto out;
	360	}
d7e09d03 PT	361	obd = class_name2obd(data->ioc_inlbuf4);
	362	} else if (data->ioc_dev < class_devno_max()) {
	363	obd = class_num2obd(data->ioc_dev);
	364	} else {
	365	CERROR("OBD ioctl: No device\n");
d212afd9 JL	366	err = -EINVAL;
d212afd9 JL	367	goto out;
d7e09d03 PT	368	}
	369
	370	if (obd == NULL) {
	371	CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
d212afd9 JL	372	err = -EINVAL;
d212afd9 JL	373	goto out;
d7e09d03 PT	374	}
	375	LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
	376
	377	if (!obd->obd_set_up \|\| obd->obd_stopping) {
d212afd9 JL	378	CERROR("OBD ioctl: device not setup %d\n", data->ioc_dev);
	379	err = -EINVAL;
	380	goto out;
d7e09d03 PT	381	}
d7e09d03 PT	382
a58a38ac	383	switch (cmd) {
d7e09d03 PT	384	case OBD_IOC_NO_TRANSNO: {
	385	if (!obd->obd_attached) {
	386	CERROR("Device %d not attached\n", obd->obd_minor);
d212afd9 JL	387	err = -ENODEV;
d212afd9 JL	388	goto out;
d7e09d03 PT	389	}
	390	CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
	391	obd->obd_name);
	392	obd->obd_no_transno = 1;
d212afd9 JL	393	err = 0;
d212afd9 JL	394	goto out;
d7e09d03 PT	395	}
	396
	397	default: {
	398	err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
	399	if (err)
d212afd9	400	goto out;
d7e09d03 PT	401
	402	err = obd_ioctl_popdata((void *)arg, data, len);
	403	if (err)
	404	err = -EFAULT;
d212afd9	405	goto out;
d7e09d03 PT	406	}
	407	}
	408
	409	out:
	410	if (buf)
	411	obd_ioctl_freedata(buf, len);
0a3bdb00	412	return err;
d7e09d03 PT	413	} /* class_handle_ioctl */
d7e09d03 PT	414
d7e09d03 PT	415	#define OBD_INIT_CHECK
	416	int obd_init_checks(void)
	417	{
	418	__u64 u64val, div64val;
	419	char buf[64];
	420	int len, ret = 0;
	421
55f5a824	422	CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", "%llu", "%lld", "%#llx");
d7e09d03	423
55f5a824	424	CDEBUG(D_INFO, "OBD_OBJECT_EOF = %#llx\n", (__u64)OBD_OBJECT_EOF);
d7e09d03 PT	425
d7e09d03 PT	426	u64val = OBD_OBJECT_EOF;
55f5a824	427	CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
d7e09d03	428	if (u64val != OBD_OBJECT_EOF) {
55f5a824	429	CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
d7e09d03 PT	430	u64val, (int)sizeof(u64val));
	431	ret = -EINVAL;
	432	}
55f5a824	433	len = snprintf(buf, sizeof(buf), "%#llx", u64val);
d7e09d03 PT	434	if (len != 18) {
	435	CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
	436	ret = -EINVAL;
	437	}
	438
	439	div64val = OBD_OBJECT_EOF;
55f5a824	440	CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
d7e09d03	441	if (u64val != OBD_OBJECT_EOF) {
55f5a824	442	CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
d7e09d03 PT	443	u64val, (int)sizeof(u64val));
	444	ret = -EOVERFLOW;
	445	}
	446	if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
55f5a824	447	CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
d7e09d03 PT	448	u64val, (int)sizeof(u64val));
	449	return -EOVERFLOW;
	450	}
	451	if (do_div(div64val, 256) != (u64val & 255)) {
b2952d62	452	CERROR("do_div(%#llx,256) != %llu\n", u64val, u64val & 255);
d7e09d03 PT	453	return -EOVERFLOW;
	454	}
	455	if (u64val >> 8 != div64val) {
55f5a824	456	CERROR("do_div(%#llx,256) %llu != %llu\n",
d7e09d03 PT	457	u64val, div64val, u64val >> 8);
	458	return -EOVERFLOW;
	459	}
55f5a824	460	len = snprintf(buf, sizeof(buf), "%#llx", u64val);
d7e09d03 PT	461	if (len != 18) {
	462	CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
	463	ret = -EINVAL;
	464	}
b0f5aad5	465	len = snprintf(buf, sizeof(buf), "%llu", u64val);
d7e09d03 PT	466	if (len != 20) {
	467	CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
	468	ret = -EINVAL;
	469	}
f537dd2c	470	len = snprintf(buf, sizeof(buf), "%lld", u64val);
d7e09d03 PT	471	if (len != 2) {
	472	CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
	473	ret = -EINVAL;
	474	}
	475	if ((u64val & ~CFS_PAGE_MASK) >= PAGE_CACHE_SIZE) {
b0f5aad5	476	CWARN("mask failed: u64val %llu >= %llu\n", u64val,
d7e09d03 PT	477	(__u64)PAGE_CACHE_SIZE);
	478	ret = -EINVAL;
	479	}
	480
	481	return ret;
	482	}
	483
d7e09d03 PT	484	extern int class_procfs_init(void);
	485	extern int class_procfs_clean(void);
	486
	487	static int __init init_obdclass(void)
	488	{
	489	int i, err;
	490	int lustre_register_fs(void);
	491
	492	for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
	493	INIT_LIST_HEAD(&capa_list[i]);
	494
	495	LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
	496
	497	spin_lock_init(&obd_types_lock);
	498	obd_zombie_impexp_init();
8cc420d0	499
e4ba525e DE	500	obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
	501	LPROCFS_STATS_FLAG_NONE \|
	502	LPROCFS_STATS_FLAG_IRQ_SAFE);
372d5b56	503
e4ba525e DE	504	if (obd_memory == NULL) {
	505	CERROR("kmalloc of 'obd_memory' failed\n");
	506	return -ENOMEM;
372d5b56	507	}
8cc420d0	508
e4ba525e DE	509	lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
	510	LPROCFS_CNTR_AVGMINMAX,
	511	"memused", "bytes");
	512	lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
	513	LPROCFS_CNTR_AVGMINMAX,
	514	"pagesused", "pages");
	515
d7e09d03 PT	516	err = obd_init_checks();
	517	if (err == -EOVERFLOW)
	518	return err;
	519
	520	class_init_uuidlist();
	521	err = class_handle_init();
	522	if (err)
	523	return err;
	524
	525	INIT_LIST_HEAD(&obd_types);
	526
	527	err = misc_register(&obd_psdev);
	528	if (err) {
	529	CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
	530	return err;
	531	}
	532
	533	/* This struct is already zeroed for us (static global) */
	534	for (i = 0; i < class_devno_max(); i++)
	535	obd_devs[i] = NULL;
	536
	537	/* Default the dirty page cache cap to 1/2 of system memory.
	538	* For clients with less memory, a larger fraction is needed
	539	* for other purposes (mostly for BGL). */
4f6cc9ab PT	540	if (totalram_pages <= 512 << (20 - PAGE_CACHE_SHIFT))
4f6cc9ab PT	541	obd_max_dirty_pages = totalram_pages / 4;
d7e09d03	542	else
4f6cc9ab	543	obd_max_dirty_pages = totalram_pages / 2;
d7e09d03 PT	544
	545	err = obd_init_caches();
	546	if (err)
	547	return err;
c7c5da01	548
d7e09d03 PT	549	err = class_procfs_init();
	550	if (err)
	551	return err;
	552
e2424a12 OD	553	err = obd_sysctl_init();
	554	if (err)
	555	return err;
	556
d7e09d03 PT	557	err = lu_global_init();
	558	if (err)
	559	return err;
	560
	561	err = cl_global_init();
	562	if (err != 0)
	563	return err;
	564
	565
	566	err = llog_info_init();
	567	if (err)
	568	return err;
	569
	570	err = lustre_register_fs();
	571
	572	return err;
	573	}
	574
	575	void obd_update_maxusage(void)
	576	{
	577	__u64 max1, max2;
	578
	579	max1 = obd_pages_sum();
	580	max2 = obd_memory_sum();
	581
	582	spin_lock(&obd_updatemax_lock);
	583	if (max1 > obd_max_pages)
	584	obd_max_pages = max1;
	585	if (max2 > obd_max_alloc)
	586	obd_max_alloc = max2;
	587	spin_unlock(&obd_updatemax_lock);
	588	}
	589	EXPORT_SYMBOL(obd_update_maxusage);
	590
d7e09d03 PT	591	__u64 obd_memory_max(void)
	592	{
	593	__u64 ret;
	594
	595	spin_lock(&obd_updatemax_lock);
	596	ret = obd_max_alloc;
	597	spin_unlock(&obd_updatemax_lock);
	598
	599	return ret;
	600	}
	601	EXPORT_SYMBOL(obd_memory_max);
	602
	603	__u64 obd_pages_max(void)
	604	{
	605	__u64 ret;
	606
	607	spin_lock(&obd_updatemax_lock);
	608	ret = obd_max_pages;
	609	spin_unlock(&obd_updatemax_lock);
	610
	611	return ret;
	612	}
	613	EXPORT_SYMBOL(obd_pages_max);
d7e09d03 PT	614
	615	/* liblustre doesn't call cleanup_obdclass, apparently. we carry on in this
	616	* ifdef to the end of the file to cover module and versioning goo.*/
	617	static void cleanup_obdclass(void)
	618	{
	619	int i;
	620	int lustre_unregister_fs(void);
	621	__u64 memory_leaked, pages_leaked;
	622	__u64 memory_max, pages_max;
d7e09d03 PT	623
	624	lustre_unregister_fs();
	625
	626	misc_deregister(&obd_psdev);
	627	for (i = 0; i < class_devno_max(); i++) {
	628	struct obd_device *obd = class_num2obd(i);
	629	if (obd && obd->obd_set_up &&
	630	OBT(obd) && OBP(obd, detach)) {
	631	/* XXX should this call generic detach otherwise? */
	632	LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
	633	OBP(obd, detach)(obd);
	634	}
	635	}
	636	llog_info_fini();
	637	cl_global_fini();
	638	lu_global_fini();
	639
	640	obd_cleanup_caches();
d7e09d03 PT	641
	642	class_procfs_clean();
	643
	644	class_handle_cleanup();
	645	class_exit_uuidlist();
	646	obd_zombie_impexp_stop();
	647
	648	memory_leaked = obd_memory_sum();
	649	pages_leaked = obd_pages_sum();
	650
	651	memory_max = obd_memory_max();
	652	pages_max = obd_pages_max();
	653
	654	lprocfs_free_stats(&obd_memory);
	655	CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
b0f5aad5	656	"obd_memory max: %llu, leaked: %llu\n",
d7e09d03 PT	657	memory_max, memory_leaked);
d7e09d03 PT	658	CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
b0f5aad5	659	"obd_memory_pages max: %llu, leaked: %llu\n",
d7e09d03	660	pages_max, pages_leaked);
d7e09d03 PT	661	}
	662
	663	MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
	664	MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
	665	MODULE_LICENSE("GPL");
6960736c	666	MODULE_VERSION(LUSTRE_VERSION_STRING);
d7e09d03	667
6960736c GKH	668	module_init(init_obdclass);
6960736c GKH	669	module_exit(cleanup_obdclass);