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* 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 <asm/atomic.h>
#include <obd_support.h>
#include <obd_class.h>
#include <linux/lnet/lnetctl.h>
#include <lustre_debug.h>
#include <lprocfs_status.h>
#include <lustre/lustre_build_version.h>
#include <linux/list.h>
#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 = 0;
__u64 obd_max_alloc = 0;
DEFINE_SPINLOCK(obd_updatemax_lock);
/* The following are visible and mutable through /proc/sys/lustre/. */
unsigned int obd_alloc_fail_rate = 0;
EXPORT_SYMBOL(obd_alloc_fail_rate);
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 ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
EXPORT_SYMBOL(ldlm_timeout);
unsigned int obd_timeout_set;
EXPORT_SYMBOL(obd_timeout_set);
unsigned int ldlm_timeout_set;
EXPORT_SYMBOL(ldlm_timeout_set);
/* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
unsigned int at_min = 0;
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);
/* Get jobid of current process by reading the environment variable
* stored in between the "env_start" & "env_end" of task struct.
*
* TODO:
* It's better to cache the jobid for later use if there is any
* efficient way, the cl_env code probably could be reused for this
* purpose.
*
* If some job scheduler doesn't store jobid in the "env_start/end",
* then an upcall could be issued here to get the jobid by utilizing
* the userspace tools/api. Then, the jobid must be cached.
*/
int lustre_get_jobid(char *jobid)
{
int jobid_len = JOBSTATS_JOBID_SIZE;
int rc = 0;
ENTRY;
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(), current_fsuid());
RETURN(0);
}
rc = cfs_get_environ(obd_jobid_var, jobid, &jobid_len);
if (rc) {
if (rc == -EOVERFLOW) {
/* For the PBS_JOBID and LOADL_STEP_ID keys (which are
* variable length strings instead of just numbers), it
* might make sense to keep the unique parts for JobID,
* instead of just returning an error. That means a
* larger temp buffer for cfs_get_environ(), then
* truncating the string at some separator to fit into
* the specified jobid_len. Fix later if needed. */
static bool printed;
if (unlikely(!printed)) {
LCONSOLE_ERROR_MSG(0x16b, "%s value too large "
"for JobID buffer (%d)\n",
obd_jobid_var, jobid_len);
printed = true;
}
} else {
CDEBUG((rc == -ENOENT || rc == -EINVAL ||
rc == -EDEADLK) ? D_INFO : D_ERROR,
"Get jobid for (%s) failed: rc = %d\n",
obd_jobid_var, rc);
}
}
RETURN(rc);
}
EXPORT_SYMBOL(lustre_get_jobid);
int obd_alloc_fail(const void *ptr, const char *name, const char *type,
size_t size, const char *file, int line)
{
if (ptr == NULL ||
(cfs_rand() & OBD_ALLOC_FAIL_MASK) < obd_alloc_fail_rate) {
CERROR("%s%salloc of %s ("LPU64" bytes) failed at %s:%d\n",
ptr ? "force " :"", type, name, (__u64)size, file,
line);
CERROR(LPU64" total bytes and "LPU64" total pages "
"("LPU64" bytes) allocated by Lustre, "
"%d total bytes by LNET\n",
obd_memory_sum(),
obd_pages_sum() << PAGE_CACHE_SHIFT,
obd_pages_sum(),
atomic_read(&libcfs_kmemory));
return 1;
}
return 0;
}
EXPORT_SYMBOL(obd_alloc_fail);
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;
ENTRY;
if (!len || !name) {
CERROR("No name passed,!\n");
GOTO(out, rc = -EINVAL);
}
if (name[len - 1] != 0) {
CERROR("Name not nul terminated!\n");
GOTO(out, rc = -EINVAL);
}
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);
GOTO(out, rc = -EINVAL);
}
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;
ENTRY;
/* 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");
GOTO(out, err = -EINVAL);
}
OBD_ALLOC(lcfg, data->ioc_plen1);
if (lcfg == NULL)
GOTO(out, err = -ENOMEM);
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);
OBD_FREE(lcfg, data->ioc_plen1);
GOTO(out, err);
}
case OBD_GET_VERSION:
if (!data->ioc_inlbuf1) {
CERROR("No buffer passed in ioctl\n");
GOTO(out, err = -EINVAL);
}
if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
CERROR("ioctl buffer too small to hold version\n");
GOTO(out, err = -EINVAL);
}
memcpy(data->ioc_bulk, BUILD_VERSION,
strlen(BUILD_VERSION) + 1);
err = obd_ioctl_popdata((void *)arg, data, len);
if (err)
err = -EFAULT;
GOTO(out, err);
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)
GOTO(out, err = -EINVAL);
err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
if (err)
err = -EFAULT;
GOTO(out, err);
}
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");
GOTO(out, err = -EINVAL);
}
if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
CERROR("UUID not NUL terminated!\n");
GOTO(out, err = -EINVAL);
}
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);
GOTO(out, err = -EINVAL);
}
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, err);
}
case OBD_IOC_CLOSE_UUID: {
CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
data->ioc_inlbuf1);
GOTO(out, err = 0);
}
case OBD_IOC_GETDEVICE: {
int index = data->ioc_count;
char *status, *str;
if (!data->ioc_inlbuf1) {
CERROR("No buffer passed in ioctl\n");
GOTO(out, err = -EINVAL);
}
if (data->ioc_inllen1 < 128) {
CERROR("ioctl buffer too small to hold version\n");
GOTO(out, err = -EINVAL);
}
obd = class_num2obd(index);
if (!obd)
GOTO(out, err = -ENOENT);
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);
GOTO(out, err = 0);
}
}
if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
GOTO(out, err = -EINVAL);
if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
GOTO(out, err = -EINVAL);
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");
GOTO(out, err = -EINVAL);
}
if (obd == NULL) {
CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
GOTO(out, err = -EINVAL);
}
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);
GOTO(out, err = -EINVAL);
}
switch(cmd) {
case OBD_IOC_NO_TRANSNO: {
if (!obd->obd_attached) {
CERROR("Device %d not attached\n", obd->obd_minor);
GOTO(out, err = -ENODEV);
}
CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
obd->obd_name);
obd->obd_no_transno = 1;
GOTO(out, err = 0);
}
default: {
err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
if (err)
GOTO(out, err);
err = obd_ioctl_popdata((void *)arg, data, len);
if (err)
err = -EFAULT;
GOTO(out, err);
}
}
out:
if (buf)
obd_ioctl_freedata(buf, len);
RETURN(err);
} /* class_handle_ioctl */
extern psdev_t obd_psdev;
#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", LPU64, LPD64, LPX64);
CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
u64val = OBD_OBJECT_EOF;
CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
if (u64val != OBD_OBJECT_EOF) {
CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
u64val, (int)sizeof(u64val));
ret = -EINVAL;
}
len = snprintf(buf, sizeof(buf), LPX64, 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 = "LPX64"\n", u64val);
if (u64val != OBD_OBJECT_EOF) {
CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
u64val, (int)sizeof(u64val));
ret = -EOVERFLOW;
}
if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
u64val, (int)sizeof(u64val));
return -EOVERFLOW;
}
if (do_div(div64val, 256) != (u64val & 255)) {
CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
return -EOVERFLOW;
}
if (u64val >> 8 != div64val) {
CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
u64val, div64val, u64val >> 8);
return -EOVERFLOW;
}
len = snprintf(buf, sizeof(buf), LPX64, u64val);
if (len != 18) {
CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
ret = -EINVAL;
}
len = snprintf(buf, sizeof(buf), LPU64, u64val);
if (len != 20) {
CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
ret = -EINVAL;
}
len = snprintf(buf, sizeof(buf), LPD64, 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 "LPU64" >= "LPU64"\n", u64val,
(__u64)PAGE_CACHE_SIZE);
ret = -EINVAL;
}
return ret;
}
extern spinlock_t obd_types_lock;
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();
#ifdef LPROCFS
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");
#endif
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 (num_physpages <= 512 << (20 - PAGE_CACHE_SHIFT))
obd_max_dirty_pages = num_physpages / 4;
else
obd_max_dirty_pages = num_physpages / 2;
err = obd_init_caches();
if (err)
return err;
err = class_procfs_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);
#ifdef LPROCFS
__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);
#endif
/* 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;
ENTRY;
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();
obd_sysctl_clean();
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: "LPU64", leaked: "LPU64"\n",
memory_max, memory_leaked);
CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
"obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
pages_max, pages_leaked);
EXIT;
}
MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
MODULE_LICENSE("GPL");
cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
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