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Subject[PATCH 08/11] staging: lustre: obdclass: move linux/linux-foo.c to foo.c
As lustre is now linux-only, having this linux sub-directory
with files named "linux-something" is just noise. Move them
to a more friendly name.

Signed-off-by: NeilBrown <neilb@suse.com>
---
drivers/staging/lustre/lustre/obdclass/Makefile | 2
.../lustre/lustre/obdclass/linux/linux-module.c | 514 --------------------
.../lustre/lustre/obdclass/linux/linux-sysctl.c | 162 ------
drivers/staging/lustre/lustre/obdclass/module.c | 514 ++++++++++++++++++++
drivers/staging/lustre/lustre/obdclass/sysctl.c | 162 ++++++
5 files changed, 677 insertions(+), 677 deletions(-)
delete mode 100644 drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
delete mode 100644 drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
create mode 100644 drivers/staging/lustre/lustre/obdclass/module.c
create mode 100644 drivers/staging/lustre/lustre/obdclass/sysctl.c

diff --git a/drivers/staging/lustre/lustre/obdclass/Makefile b/drivers/staging/lustre/lustre/obdclass/Makefile
index e3fa9acff4c4..e36ba2167d10 100644
--- a/drivers/staging/lustre/lustre/obdclass/Makefile
+++ b/drivers/staging/lustre/lustre/obdclass/Makefile
@@ -4,7 +4,7 @@ subdir-ccflags-y += -I$(srctree)/drivers/staging/lustre/lustre/include

obj-$(CONFIG_LUSTRE_FS) += obdclass.o

-obdclass-y := linux/linux-module.o linux/linux-sysctl.o \
+obdclass-y := module.o sysctl.o \
llog.o llog_cat.o llog_obd.o llog_swab.o class_obd.o debug.o \
genops.o uuid.o lprocfs_status.o lprocfs_counters.o \
lustre_handles.o lustre_peer.o statfs_pack.o linkea.o \
diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
deleted file mode 100644
index 9c800580053b..000000000000
--- a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
+++ /dev/null
@@ -1,514 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * 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.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2007, 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.
- *
- * lustre/obdclass/linux/linux-module.c
- *
- * Object Devices Class Driver
- * These are the only exported functions, they provide some generic
- * infrastructure for managing object devices
- */
-
-#define DEBUG_SUBSYSTEM S_CLASS
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/lp.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/fcntl.h>
-#include <linux/delay.h>
-#include <linux/skbuff.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/list.h>
-#include <linux/highmem.h>
-#include <linux/io.h>
-#include <asm/ioctls.h>
-#include <linux/uaccess.h>
-#include <linux/miscdevice.h>
-#include <linux/seq_file.h>
-#include <linux/kobject.h>
-
-#include <uapi/linux/lnet/lnetctl.h>
-#include <obd_support.h>
-#include <obd_class.h>
-#include <lprocfs_status.h>
-#include <uapi/linux/lustre/lustre_ioctl.h>
-#include <uapi/linux/lustre/lustre_ver.h>
-
-#define OBD_MAX_IOCTL_BUFFER 8192
-
-static int obd_ioctl_is_invalid(struct obd_ioctl_data *data)
-{
- if (data->ioc_len > BIT(30)) {
- CERROR("OBD ioctl: ioc_len larger than 1<<30\n");
- return 1;
- }
-
- if (data->ioc_inllen1 > BIT(30)) {
- CERROR("OBD ioctl: ioc_inllen1 larger than 1<<30\n");
- return 1;
- }
-
- if (data->ioc_inllen2 > BIT(30)) {
- CERROR("OBD ioctl: ioc_inllen2 larger than 1<<30\n");
- return 1;
- }
-
- if (data->ioc_inllen3 > BIT(30)) {
- CERROR("OBD ioctl: ioc_inllen3 larger than 1<<30\n");
- return 1;
- }
-
- if (data->ioc_inllen4 > BIT(30)) {
- CERROR("OBD ioctl: ioc_inllen4 larger than 1<<30\n");
- return 1;
- }
-
- if (data->ioc_inlbuf1 && data->ioc_inllen1 == 0) {
- CERROR("OBD ioctl: inlbuf1 pointer but 0 length\n");
- return 1;
- }
-
- if (data->ioc_inlbuf2 && data->ioc_inllen2 == 0) {
- CERROR("OBD ioctl: inlbuf2 pointer but 0 length\n");
- return 1;
- }
-
- if (data->ioc_inlbuf3 && data->ioc_inllen3 == 0) {
- CERROR("OBD ioctl: inlbuf3 pointer but 0 length\n");
- return 1;
- }
-
- if (data->ioc_inlbuf4 && data->ioc_inllen4 == 0) {
- CERROR("OBD ioctl: inlbuf4 pointer but 0 length\n");
- return 1;
- }
-
- if (data->ioc_pbuf1 && data->ioc_plen1 == 0) {
- CERROR("OBD ioctl: pbuf1 pointer but 0 length\n");
- return 1;
- }
-
- if (data->ioc_pbuf2 && data->ioc_plen2 == 0) {
- CERROR("OBD ioctl: pbuf2 pointer but 0 length\n");
- return 1;
- }
-
- if (!data->ioc_pbuf1 && data->ioc_plen1 != 0) {
- CERROR("OBD ioctl: plen1 set but NULL pointer\n");
- return 1;
- }
-
- if (!data->ioc_pbuf2 && data->ioc_plen2 != 0) {
- CERROR("OBD ioctl: plen2 set but NULL pointer\n");
- return 1;
- }
-
- if (obd_ioctl_packlen(data) > data->ioc_len) {
- CERROR("OBD ioctl: packlen exceeds ioc_len (%d > %d)\n",
- obd_ioctl_packlen(data), data->ioc_len);
- return 1;
- }
-
- return 0;
-}
-
-/* buffer MUST be at least the size of obd_ioctl_hdr */
-int obd_ioctl_getdata(char **buf, int *len, void __user *arg)
-{
- struct obd_ioctl_hdr hdr;
- struct obd_ioctl_data *data;
- int err;
- int offset = 0;
-
- if (copy_from_user(&hdr, arg, sizeof(hdr)))
- return -EFAULT;
-
- if (hdr.ioc_version != OBD_IOCTL_VERSION) {
- CERROR("Version mismatch kernel (%x) vs application (%x)\n",
- OBD_IOCTL_VERSION, hdr.ioc_version);
- return -EINVAL;
- }
-
- if (hdr.ioc_len > OBD_MAX_IOCTL_BUFFER) {
- CERROR("User buffer len %d exceeds %d max buffer\n",
- hdr.ioc_len, OBD_MAX_IOCTL_BUFFER);
- return -EINVAL;
- }
-
- if (hdr.ioc_len < sizeof(struct obd_ioctl_data)) {
- CERROR("User buffer too small for ioctl (%d)\n", hdr.ioc_len);
- return -EINVAL;
- }
-
- /* When there are lots of processes calling vmalloc on multi-core
- * system, the high lock contention will hurt performance badly,
- * obdfilter-survey is an example, which relies on ioctl. So we'd
- * better avoid vmalloc on ioctl path. LU-66
- */
- *buf = kvzalloc(hdr.ioc_len, GFP_KERNEL);
- if (!*buf) {
- CERROR("Cannot allocate control buffer of len %d\n",
- hdr.ioc_len);
- return -EINVAL;
- }
- *len = hdr.ioc_len;
- data = (struct obd_ioctl_data *)*buf;
-
- if (copy_from_user(*buf, arg, hdr.ioc_len)) {
- err = -EFAULT;
- goto free_buf;
- }
- if (hdr.ioc_len != data->ioc_len) {
- err = -EINVAL;
- goto free_buf;
- }
-
- if (obd_ioctl_is_invalid(data)) {
- CERROR("ioctl not correctly formatted\n");
- err = -EINVAL;
- goto free_buf;
- }
-
- if (data->ioc_inllen1) {
- data->ioc_inlbuf1 = &data->ioc_bulk[0];
- offset += cfs_size_round(data->ioc_inllen1);
- }
-
- if (data->ioc_inllen2) {
- data->ioc_inlbuf2 = &data->ioc_bulk[0] + offset;
- offset += cfs_size_round(data->ioc_inllen2);
- }
-
- if (data->ioc_inllen3) {
- data->ioc_inlbuf3 = &data->ioc_bulk[0] + offset;
- offset += cfs_size_round(data->ioc_inllen3);
- }
-
- if (data->ioc_inllen4)
- data->ioc_inlbuf4 = &data->ioc_bulk[0] + offset;
-
- return 0;
-
-free_buf:
- kvfree(*buf);
- return err;
-}
-EXPORT_SYMBOL(obd_ioctl_getdata);
-
-/* opening /dev/obd */
-static int obd_class_open(struct inode *inode, struct file *file)
-{
- try_module_get(THIS_MODULE);
- return 0;
-}
-
-/* closing /dev/obd */
-static int obd_class_release(struct inode *inode, struct file *file)
-{
- module_put(THIS_MODULE);
- return 0;
-}
-
-/* to control /dev/obd */
-static long obd_class_ioctl(struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- int err = 0;
-
- /* Allow non-root access for OBD_IOC_PING_TARGET - used by lfs check */
- if (!capable(CAP_SYS_ADMIN) && (cmd != OBD_IOC_PING_TARGET))
- return err = -EACCES;
- if ((cmd & 0xffffff00) == ((int)'T') << 8) /* ignore all tty ioctls */
- return err = -ENOTTY;
-
- err = class_handle_ioctl(cmd, (unsigned long)arg);
-
- return err;
-}
-
-/* declare character device */
-static const struct file_operations obd_psdev_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = obd_class_ioctl, /* unlocked_ioctl */
- .open = obd_class_open, /* open */
- .release = obd_class_release, /* release */
-};
-
-/* modules setup */
-struct miscdevice obd_psdev = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = OBD_DEV_NAME,
- .fops = &obd_psdev_fops,
-};
-
-static ssize_t version_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%s\n", LUSTRE_VERSION_STRING);
-}
-
-static ssize_t pinger_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%s\n", "on");
-}
-
-static ssize_t
-health_check_show(struct kobject *kobj, struct attribute *attr, char *buf)
-{
- bool healthy = true;
- int i;
- size_t len = 0;
-
- if (libcfs_catastrophe)
- return sprintf(buf, "LBUG\n");
-
- read_lock(&obd_dev_lock);
- for (i = 0; i < class_devno_max(); i++) {
- struct obd_device *obd;
-
- obd = class_num2obd(i);
- if (!obd || !obd->obd_attached || !obd->obd_set_up)
- continue;
-
- LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
- if (obd->obd_stopping)
- continue;
-
- class_incref(obd, __func__, current);
- read_unlock(&obd_dev_lock);
-
- if (obd_health_check(NULL, obd))
- healthy = false;
- class_decref(obd, __func__, current);
- read_lock(&obd_dev_lock);
- }
- read_unlock(&obd_dev_lock);
-
- if (healthy)
- len = sprintf(buf, "healthy\n");
- else
- len = sprintf(buf, "NOT HEALTHY\n");
-
- return len;
-}
-
-static ssize_t jobid_var_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%s\n", obd_jobid_var);
-}
-
-static ssize_t jobid_var_store(struct kobject *kobj, struct attribute *attr,
- const char *buffer,
- size_t count)
-{
- if (!count || count > JOBSTATS_JOBID_VAR_MAX_LEN)
- return -EINVAL;
-
- memset(obd_jobid_var, 0, JOBSTATS_JOBID_VAR_MAX_LEN + 1);
-
- memcpy(obd_jobid_var, buffer, count);
-
- /* Trim the trailing '\n' if any */
- if (obd_jobid_var[count - 1] == '\n')
- obd_jobid_var[count - 1] = 0;
-
- return count;
-}
-
-static ssize_t jobid_name_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%s\n", obd_jobid_node);
-}
-
-static ssize_t jobid_name_store(struct kobject *kobj, struct attribute *attr,
- const char *buffer,
- size_t count)
-{
- if (!count || count > LUSTRE_JOBID_SIZE)
- return -EINVAL;
-
- memcpy(obd_jobid_node, buffer, count);
-
- obd_jobid_node[count] = 0;
-
- /* Trim the trailing '\n' if any */
- if (obd_jobid_node[count - 1] == '\n')
- obd_jobid_node[count - 1] = 0;
-
- return count;
-}
-
-/* Root for /sys/kernel/debug/lustre */
-struct dentry *debugfs_lustre_root;
-EXPORT_SYMBOL_GPL(debugfs_lustre_root);
-
-LUSTRE_RO_ATTR(version);
-LUSTRE_RO_ATTR(pinger);
-LUSTRE_RO_ATTR(health_check);
-LUSTRE_RW_ATTR(jobid_var);
-LUSTRE_RW_ATTR(jobid_name);
-
-static struct attribute *lustre_attrs[] = {
- &lustre_attr_version.attr,
- &lustre_attr_pinger.attr,
- &lustre_attr_health_check.attr,
- &lustre_attr_jobid_name.attr,
- &lustre_attr_jobid_var.attr,
- NULL,
-};
-
-static void *obd_device_list_seq_start(struct seq_file *p, loff_t *pos)
-{
- if (*pos >= class_devno_max())
- return NULL;
-
- return pos;
-}
-
-static void obd_device_list_seq_stop(struct seq_file *p, void *v)
-{
-}
-
-static void *obd_device_list_seq_next(struct seq_file *p, void *v, loff_t *pos)
-{
- ++*pos;
- if (*pos >= class_devno_max())
- return NULL;
-
- return pos;
-}
-
-static int obd_device_list_seq_show(struct seq_file *p, void *v)
-{
- loff_t index = *(loff_t *)v;
- struct obd_device *obd = class_num2obd((int)index);
- char *status;
-
- if (!obd)
- return 0;
-
- LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
- if (obd->obd_stopping)
- status = "ST";
- else if (obd->obd_inactive)
- status = "IN";
- else if (obd->obd_set_up)
- status = "UP";
- else if (obd->obd_attached)
- status = "AT";
- else
- status = "--";
-
- seq_printf(p, "%3d %s %s %s %s %d\n",
- (int)index, status, obd->obd_type->typ_name,
- obd->obd_name, obd->obd_uuid.uuid,
- atomic_read(&obd->obd_refcount));
- return 0;
-}
-
-static const struct seq_operations obd_device_list_sops = {
- .start = obd_device_list_seq_start,
- .stop = obd_device_list_seq_stop,
- .next = obd_device_list_seq_next,
- .show = obd_device_list_seq_show,
-};
-
-static int obd_device_list_open(struct inode *inode, struct file *file)
-{
- struct seq_file *seq;
- int rc = seq_open(file, &obd_device_list_sops);
-
- if (rc)
- return rc;
-
- seq = file->private_data;
- seq->private = inode->i_private;
-
- return 0;
-}
-
-static const struct file_operations obd_device_list_fops = {
- .owner = THIS_MODULE,
- .open = obd_device_list_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-struct kobject *lustre_kobj;
-EXPORT_SYMBOL_GPL(lustre_kobj);
-
-static const struct attribute_group lustre_attr_group = {
- .attrs = lustre_attrs,
-};
-
-int class_procfs_init(void)
-{
- int rc = -ENOMEM;
-
- lustre_kobj = kobject_create_and_add("lustre", fs_kobj);
- if (!lustre_kobj)
- goto out;
-
- /* Create the files associated with this kobject */
- rc = sysfs_create_group(lustre_kobj, &lustre_attr_group);
- if (rc) {
- kobject_put(lustre_kobj);
- goto out;
- }
-
- debugfs_lustre_root = debugfs_create_dir("lustre", NULL);
-
- debugfs_create_file("devices", 0444, debugfs_lustre_root, NULL,
- &obd_device_list_fops);
-out:
- return rc;
-}
-
-int class_procfs_clean(void)
-{
- debugfs_remove_recursive(debugfs_lustre_root);
-
- debugfs_lustre_root = NULL;
-
- sysfs_remove_group(lustre_kobj, &lustre_attr_group);
- kobject_put(lustre_kobj);
-
- return 0;
-}
diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
deleted file mode 100644
index e5e8687784ee..000000000000
--- a/drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
+++ /dev/null
@@ -1,162 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * 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.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2015, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/sysctl.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/ctype.h>
-#include <linux/bitops.h>
-#include <linux/uaccess.h>
-#include <linux/utsname.h>
-
-#define DEBUG_SUBSYSTEM S_CLASS
-
-#include <obd_support.h>
-#include <lprocfs_status.h>
-#include <obd_class.h>
-
-struct static_lustre_uintvalue_attr {
- struct {
- struct attribute attr;
- ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
- char *buf);
- ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
- const char *buf, size_t len);
- } u;
- int *value;
-};
-
-static ssize_t static_uintvalue_show(struct kobject *kobj,
- struct attribute *attr,
- char *buf)
-{
- struct static_lustre_uintvalue_attr *lattr = (void *)attr;
-
- return sprintf(buf, "%d\n", *lattr->value);
-}
-
-static ssize_t static_uintvalue_store(struct kobject *kobj,
- struct attribute *attr,
- const char *buffer, size_t count)
-{
- struct static_lustre_uintvalue_attr *lattr = (void *)attr;
- int rc;
- unsigned int val;
-
- rc = kstrtouint(buffer, 10, &val);
- if (rc)
- return rc;
-
- *lattr->value = val;
-
- return count;
-}
-
-#define LUSTRE_STATIC_UINT_ATTR(name, value) \
-static struct static_lustre_uintvalue_attr lustre_sattr_##name = \
- {__ATTR(name, 0644, \
- static_uintvalue_show, \
- static_uintvalue_store),\
- value }
-
-LUSTRE_STATIC_UINT_ATTR(timeout, &obd_timeout);
-
-static ssize_t max_dirty_mb_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%lu\n",
- obd_max_dirty_pages / (1 << (20 - PAGE_SHIFT)));
-}
-
-static ssize_t max_dirty_mb_store(struct kobject *kobj, struct attribute *attr,
- const char *buffer, size_t count)
-{
- int rc;
- unsigned long val;
-
- rc = kstrtoul(buffer, 10, &val);
- if (rc)
- return rc;
-
- val *= 1 << (20 - PAGE_SHIFT); /* convert to pages */
-
- if (val > ((totalram_pages / 10) * 9)) {
- /* Somebody wants to assign too much memory to dirty pages */
- return -EINVAL;
- }
-
- if (val < 4 << (20 - PAGE_SHIFT)) {
- /* Less than 4 Mb for dirty cache is also bad */
- return -EINVAL;
- }
-
- obd_max_dirty_pages = val;
-
- return count;
-}
-LUSTRE_RW_ATTR(max_dirty_mb);
-
-LUSTRE_STATIC_UINT_ATTR(debug_peer_on_timeout, &obd_debug_peer_on_timeout);
-LUSTRE_STATIC_UINT_ATTR(dump_on_timeout, &obd_dump_on_timeout);
-LUSTRE_STATIC_UINT_ATTR(dump_on_eviction, &obd_dump_on_eviction);
-LUSTRE_STATIC_UINT_ATTR(at_min, &at_min);
-LUSTRE_STATIC_UINT_ATTR(at_max, &at_max);
-LUSTRE_STATIC_UINT_ATTR(at_extra, &at_extra);
-LUSTRE_STATIC_UINT_ATTR(at_early_margin, &at_early_margin);
-LUSTRE_STATIC_UINT_ATTR(at_history, &at_history);
-
-static struct attribute *lustre_attrs[] = {
- &lustre_sattr_timeout.u.attr,
- &lustre_attr_max_dirty_mb.attr,
- &lustre_sattr_debug_peer_on_timeout.u.attr,
- &lustre_sattr_dump_on_timeout.u.attr,
- &lustre_sattr_dump_on_eviction.u.attr,
- &lustre_sattr_at_min.u.attr,
- &lustre_sattr_at_max.u.attr,
- &lustre_sattr_at_extra.u.attr,
- &lustre_sattr_at_early_margin.u.attr,
- &lustre_sattr_at_history.u.attr,
- NULL,
-};
-
-static const struct attribute_group lustre_attr_group = {
- .attrs = lustre_attrs,
-};
-
-int obd_sysctl_init(void)
-{
- return sysfs_create_group(lustre_kobj, &lustre_attr_group);
-}
diff --git a/drivers/staging/lustre/lustre/obdclass/module.c b/drivers/staging/lustre/lustre/obdclass/module.c
new file mode 100644
index 000000000000..9c800580053b
--- /dev/null
+++ b/drivers/staging/lustre/lustre/obdclass/module.c
@@ -0,0 +1,514 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 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.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 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.
+ *
+ * lustre/obdclass/linux/linux-module.c
+ *
+ * Object Devices Class Driver
+ * These are the only exported functions, they provide some generic
+ * infrastructure for managing object devices
+ */
+
+#define DEBUG_SUBSYSTEM S_CLASS
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/lp.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/fcntl.h>
+#include <linux/delay.h>
+#include <linux/skbuff.h>
+#include <linux/fs.h>
+#include <linux/poll.h>
+#include <linux/list.h>
+#include <linux/highmem.h>
+#include <linux/io.h>
+#include <asm/ioctls.h>
+#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/seq_file.h>
+#include <linux/kobject.h>
+
+#include <uapi/linux/lnet/lnetctl.h>
+#include <obd_support.h>
+#include <obd_class.h>
+#include <lprocfs_status.h>
+#include <uapi/linux/lustre/lustre_ioctl.h>
+#include <uapi/linux/lustre/lustre_ver.h>
+
+#define OBD_MAX_IOCTL_BUFFER 8192
+
+static int obd_ioctl_is_invalid(struct obd_ioctl_data *data)
+{
+ if (data->ioc_len > BIT(30)) {
+ CERROR("OBD ioctl: ioc_len larger than 1<<30\n");
+ return 1;
+ }
+
+ if (data->ioc_inllen1 > BIT(30)) {
+ CERROR("OBD ioctl: ioc_inllen1 larger than 1<<30\n");
+ return 1;
+ }
+
+ if (data->ioc_inllen2 > BIT(30)) {
+ CERROR("OBD ioctl: ioc_inllen2 larger than 1<<30\n");
+ return 1;
+ }
+
+ if (data->ioc_inllen3 > BIT(30)) {
+ CERROR("OBD ioctl: ioc_inllen3 larger than 1<<30\n");
+ return 1;
+ }
+
+ if (data->ioc_inllen4 > BIT(30)) {
+ CERROR("OBD ioctl: ioc_inllen4 larger than 1<<30\n");
+ return 1;
+ }
+
+ if (data->ioc_inlbuf1 && data->ioc_inllen1 == 0) {
+ CERROR("OBD ioctl: inlbuf1 pointer but 0 length\n");
+ return 1;
+ }
+
+ if (data->ioc_inlbuf2 && data->ioc_inllen2 == 0) {
+ CERROR("OBD ioctl: inlbuf2 pointer but 0 length\n");
+ return 1;
+ }
+
+ if (data->ioc_inlbuf3 && data->ioc_inllen3 == 0) {
+ CERROR("OBD ioctl: inlbuf3 pointer but 0 length\n");
+ return 1;
+ }
+
+ if (data->ioc_inlbuf4 && data->ioc_inllen4 == 0) {
+ CERROR("OBD ioctl: inlbuf4 pointer but 0 length\n");
+ return 1;
+ }
+
+ if (data->ioc_pbuf1 && data->ioc_plen1 == 0) {
+ CERROR("OBD ioctl: pbuf1 pointer but 0 length\n");
+ return 1;
+ }
+
+ if (data->ioc_pbuf2 && data->ioc_plen2 == 0) {
+ CERROR("OBD ioctl: pbuf2 pointer but 0 length\n");
+ return 1;
+ }
+
+ if (!data->ioc_pbuf1 && data->ioc_plen1 != 0) {
+ CERROR("OBD ioctl: plen1 set but NULL pointer\n");
+ return 1;
+ }
+
+ if (!data->ioc_pbuf2 && data->ioc_plen2 != 0) {
+ CERROR("OBD ioctl: plen2 set but NULL pointer\n");
+ return 1;
+ }
+
+ if (obd_ioctl_packlen(data) > data->ioc_len) {
+ CERROR("OBD ioctl: packlen exceeds ioc_len (%d > %d)\n",
+ obd_ioctl_packlen(data), data->ioc_len);
+ return 1;
+ }
+
+ return 0;
+}
+
+/* buffer MUST be at least the size of obd_ioctl_hdr */
+int obd_ioctl_getdata(char **buf, int *len, void __user *arg)
+{
+ struct obd_ioctl_hdr hdr;
+ struct obd_ioctl_data *data;
+ int err;
+ int offset = 0;
+
+ if (copy_from_user(&hdr, arg, sizeof(hdr)))
+ return -EFAULT;
+
+ if (hdr.ioc_version != OBD_IOCTL_VERSION) {
+ CERROR("Version mismatch kernel (%x) vs application (%x)\n",
+ OBD_IOCTL_VERSION, hdr.ioc_version);
+ return -EINVAL;
+ }
+
+ if (hdr.ioc_len > OBD_MAX_IOCTL_BUFFER) {
+ CERROR("User buffer len %d exceeds %d max buffer\n",
+ hdr.ioc_len, OBD_MAX_IOCTL_BUFFER);
+ return -EINVAL;
+ }
+
+ if (hdr.ioc_len < sizeof(struct obd_ioctl_data)) {
+ CERROR("User buffer too small for ioctl (%d)\n", hdr.ioc_len);
+ return -EINVAL;
+ }
+
+ /* When there are lots of processes calling vmalloc on multi-core
+ * system, the high lock contention will hurt performance badly,
+ * obdfilter-survey is an example, which relies on ioctl. So we'd
+ * better avoid vmalloc on ioctl path. LU-66
+ */
+ *buf = kvzalloc(hdr.ioc_len, GFP_KERNEL);
+ if (!*buf) {
+ CERROR("Cannot allocate control buffer of len %d\n",
+ hdr.ioc_len);
+ return -EINVAL;
+ }
+ *len = hdr.ioc_len;
+ data = (struct obd_ioctl_data *)*buf;
+
+ if (copy_from_user(*buf, arg, hdr.ioc_len)) {
+ err = -EFAULT;
+ goto free_buf;
+ }
+ if (hdr.ioc_len != data->ioc_len) {
+ err = -EINVAL;
+ goto free_buf;
+ }
+
+ if (obd_ioctl_is_invalid(data)) {
+ CERROR("ioctl not correctly formatted\n");
+ err = -EINVAL;
+ goto free_buf;
+ }
+
+ if (data->ioc_inllen1) {
+ data->ioc_inlbuf1 = &data->ioc_bulk[0];
+ offset += cfs_size_round(data->ioc_inllen1);
+ }
+
+ if (data->ioc_inllen2) {
+ data->ioc_inlbuf2 = &data->ioc_bulk[0] + offset;
+ offset += cfs_size_round(data->ioc_inllen2);
+ }
+
+ if (data->ioc_inllen3) {
+ data->ioc_inlbuf3 = &data->ioc_bulk[0] + offset;
+ offset += cfs_size_round(data->ioc_inllen3);
+ }
+
+ if (data->ioc_inllen4)
+ data->ioc_inlbuf4 = &data->ioc_bulk[0] + offset;
+
+ return 0;
+
+free_buf:
+ kvfree(*buf);
+ return err;
+}
+EXPORT_SYMBOL(obd_ioctl_getdata);
+
+/* opening /dev/obd */
+static int obd_class_open(struct inode *inode, struct file *file)
+{
+ try_module_get(THIS_MODULE);
+ return 0;
+}
+
+/* closing /dev/obd */
+static int obd_class_release(struct inode *inode, struct file *file)
+{
+ module_put(THIS_MODULE);
+ return 0;
+}
+
+/* to control /dev/obd */
+static long obd_class_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ int err = 0;
+
+ /* Allow non-root access for OBD_IOC_PING_TARGET - used by lfs check */
+ if (!capable(CAP_SYS_ADMIN) && (cmd != OBD_IOC_PING_TARGET))
+ return err = -EACCES;
+ if ((cmd & 0xffffff00) == ((int)'T') << 8) /* ignore all tty ioctls */
+ return err = -ENOTTY;
+
+ err = class_handle_ioctl(cmd, (unsigned long)arg);
+
+ return err;
+}
+
+/* declare character device */
+static const struct file_operations obd_psdev_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = obd_class_ioctl, /* unlocked_ioctl */
+ .open = obd_class_open, /* open */
+ .release = obd_class_release, /* release */
+};
+
+/* modules setup */
+struct miscdevice obd_psdev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = OBD_DEV_NAME,
+ .fops = &obd_psdev_fops,
+};
+
+static ssize_t version_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%s\n", LUSTRE_VERSION_STRING);
+}
+
+static ssize_t pinger_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%s\n", "on");
+}
+
+static ssize_t
+health_check_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+ bool healthy = true;
+ int i;
+ size_t len = 0;
+
+ if (libcfs_catastrophe)
+ return sprintf(buf, "LBUG\n");
+
+ read_lock(&obd_dev_lock);
+ for (i = 0; i < class_devno_max(); i++) {
+ struct obd_device *obd;
+
+ obd = class_num2obd(i);
+ if (!obd || !obd->obd_attached || !obd->obd_set_up)
+ continue;
+
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+ if (obd->obd_stopping)
+ continue;
+
+ class_incref(obd, __func__, current);
+ read_unlock(&obd_dev_lock);
+
+ if (obd_health_check(NULL, obd))
+ healthy = false;
+ class_decref(obd, __func__, current);
+ read_lock(&obd_dev_lock);
+ }
+ read_unlock(&obd_dev_lock);
+
+ if (healthy)
+ len = sprintf(buf, "healthy\n");
+ else
+ len = sprintf(buf, "NOT HEALTHY\n");
+
+ return len;
+}
+
+static ssize_t jobid_var_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", obd_jobid_var);
+}
+
+static ssize_t jobid_var_store(struct kobject *kobj, struct attribute *attr,
+ const char *buffer,
+ size_t count)
+{
+ if (!count || count > JOBSTATS_JOBID_VAR_MAX_LEN)
+ return -EINVAL;
+
+ memset(obd_jobid_var, 0, JOBSTATS_JOBID_VAR_MAX_LEN + 1);
+
+ memcpy(obd_jobid_var, buffer, count);
+
+ /* Trim the trailing '\n' if any */
+ if (obd_jobid_var[count - 1] == '\n')
+ obd_jobid_var[count - 1] = 0;
+
+ return count;
+}
+
+static ssize_t jobid_name_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", obd_jobid_node);
+}
+
+static ssize_t jobid_name_store(struct kobject *kobj, struct attribute *attr,
+ const char *buffer,
+ size_t count)
+{
+ if (!count || count > LUSTRE_JOBID_SIZE)
+ return -EINVAL;
+
+ memcpy(obd_jobid_node, buffer, count);
+
+ obd_jobid_node[count] = 0;
+
+ /* Trim the trailing '\n' if any */
+ if (obd_jobid_node[count - 1] == '\n')
+ obd_jobid_node[count - 1] = 0;
+
+ return count;
+}
+
+/* Root for /sys/kernel/debug/lustre */
+struct dentry *debugfs_lustre_root;
+EXPORT_SYMBOL_GPL(debugfs_lustre_root);
+
+LUSTRE_RO_ATTR(version);
+LUSTRE_RO_ATTR(pinger);
+LUSTRE_RO_ATTR(health_check);
+LUSTRE_RW_ATTR(jobid_var);
+LUSTRE_RW_ATTR(jobid_name);
+
+static struct attribute *lustre_attrs[] = {
+ &lustre_attr_version.attr,
+ &lustre_attr_pinger.attr,
+ &lustre_attr_health_check.attr,
+ &lustre_attr_jobid_name.attr,
+ &lustre_attr_jobid_var.attr,
+ NULL,
+};
+
+static void *obd_device_list_seq_start(struct seq_file *p, loff_t *pos)
+{
+ if (*pos >= class_devno_max())
+ return NULL;
+
+ return pos;
+}
+
+static void obd_device_list_seq_stop(struct seq_file *p, void *v)
+{
+}
+
+static void *obd_device_list_seq_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ ++*pos;
+ if (*pos >= class_devno_max())
+ return NULL;
+
+ return pos;
+}
+
+static int obd_device_list_seq_show(struct seq_file *p, void *v)
+{
+ loff_t index = *(loff_t *)v;
+ struct obd_device *obd = class_num2obd((int)index);
+ char *status;
+
+ if (!obd)
+ return 0;
+
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+ if (obd->obd_stopping)
+ status = "ST";
+ else if (obd->obd_inactive)
+ status = "IN";
+ else if (obd->obd_set_up)
+ status = "UP";
+ else if (obd->obd_attached)
+ status = "AT";
+ else
+ status = "--";
+
+ seq_printf(p, "%3d %s %s %s %s %d\n",
+ (int)index, status, obd->obd_type->typ_name,
+ obd->obd_name, obd->obd_uuid.uuid,
+ atomic_read(&obd->obd_refcount));
+ return 0;
+}
+
+static const struct seq_operations obd_device_list_sops = {
+ .start = obd_device_list_seq_start,
+ .stop = obd_device_list_seq_stop,
+ .next = obd_device_list_seq_next,
+ .show = obd_device_list_seq_show,
+};
+
+static int obd_device_list_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq;
+ int rc = seq_open(file, &obd_device_list_sops);
+
+ if (rc)
+ return rc;
+
+ seq = file->private_data;
+ seq->private = inode->i_private;
+
+ return 0;
+}
+
+static const struct file_operations obd_device_list_fops = {
+ .owner = THIS_MODULE,
+ .open = obd_device_list_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+struct kobject *lustre_kobj;
+EXPORT_SYMBOL_GPL(lustre_kobj);
+
+static const struct attribute_group lustre_attr_group = {
+ .attrs = lustre_attrs,
+};
+
+int class_procfs_init(void)
+{
+ int rc = -ENOMEM;
+
+ lustre_kobj = kobject_create_and_add("lustre", fs_kobj);
+ if (!lustre_kobj)
+ goto out;
+
+ /* Create the files associated with this kobject */
+ rc = sysfs_create_group(lustre_kobj, &lustre_attr_group);
+ if (rc) {
+ kobject_put(lustre_kobj);
+ goto out;
+ }
+
+ debugfs_lustre_root = debugfs_create_dir("lustre", NULL);
+
+ debugfs_create_file("devices", 0444, debugfs_lustre_root, NULL,
+ &obd_device_list_fops);
+out:
+ return rc;
+}
+
+int class_procfs_clean(void)
+{
+ debugfs_remove_recursive(debugfs_lustre_root);
+
+ debugfs_lustre_root = NULL;
+
+ sysfs_remove_group(lustre_kobj, &lustre_attr_group);
+ kobject_put(lustre_kobj);
+
+ return 0;
+}
diff --git a/drivers/staging/lustre/lustre/obdclass/sysctl.c b/drivers/staging/lustre/lustre/obdclass/sysctl.c
new file mode 100644
index 000000000000..e5e8687784ee
--- /dev/null
+++ b/drivers/staging/lustre/lustre/obdclass/sysctl.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 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.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2015, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/sysctl.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <linux/bitops.h>
+#include <linux/uaccess.h>
+#include <linux/utsname.h>
+
+#define DEBUG_SUBSYSTEM S_CLASS
+
+#include <obd_support.h>
+#include <lprocfs_status.h>
+#include <obd_class.h>
+
+struct static_lustre_uintvalue_attr {
+ struct {
+ struct attribute attr;
+ ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
+ char *buf);
+ ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t len);
+ } u;
+ int *value;
+};
+
+static ssize_t static_uintvalue_show(struct kobject *kobj,
+ struct attribute *attr,
+ char *buf)
+{
+ struct static_lustre_uintvalue_attr *lattr = (void *)attr;
+
+ return sprintf(buf, "%d\n", *lattr->value);
+}
+
+static ssize_t static_uintvalue_store(struct kobject *kobj,
+ struct attribute *attr,
+ const char *buffer, size_t count)
+{
+ struct static_lustre_uintvalue_attr *lattr = (void *)attr;
+ int rc;
+ unsigned int val;
+
+ rc = kstrtouint(buffer, 10, &val);
+ if (rc)
+ return rc;
+
+ *lattr->value = val;
+
+ return count;
+}
+
+#define LUSTRE_STATIC_UINT_ATTR(name, value) \
+static struct static_lustre_uintvalue_attr lustre_sattr_##name = \
+ {__ATTR(name, 0644, \
+ static_uintvalue_show, \
+ static_uintvalue_store),\
+ value }
+
+LUSTRE_STATIC_UINT_ATTR(timeout, &obd_timeout);
+
+static ssize_t max_dirty_mb_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%lu\n",
+ obd_max_dirty_pages / (1 << (20 - PAGE_SHIFT)));
+}
+
+static ssize_t max_dirty_mb_store(struct kobject *kobj, struct attribute *attr,
+ const char *buffer, size_t count)
+{
+ int rc;
+ unsigned long val;
+
+ rc = kstrtoul(buffer, 10, &val);
+ if (rc)
+ return rc;
+
+ val *= 1 << (20 - PAGE_SHIFT); /* convert to pages */
+
+ if (val > ((totalram_pages / 10) * 9)) {
+ /* Somebody wants to assign too much memory to dirty pages */
+ return -EINVAL;
+ }
+
+ if (val < 4 << (20 - PAGE_SHIFT)) {
+ /* Less than 4 Mb for dirty cache is also bad */
+ return -EINVAL;
+ }
+
+ obd_max_dirty_pages = val;
+
+ return count;
+}
+LUSTRE_RW_ATTR(max_dirty_mb);
+
+LUSTRE_STATIC_UINT_ATTR(debug_peer_on_timeout, &obd_debug_peer_on_timeout);
+LUSTRE_STATIC_UINT_ATTR(dump_on_timeout, &obd_dump_on_timeout);
+LUSTRE_STATIC_UINT_ATTR(dump_on_eviction, &obd_dump_on_eviction);
+LUSTRE_STATIC_UINT_ATTR(at_min, &at_min);
+LUSTRE_STATIC_UINT_ATTR(at_max, &at_max);
+LUSTRE_STATIC_UINT_ATTR(at_extra, &at_extra);
+LUSTRE_STATIC_UINT_ATTR(at_early_margin, &at_early_margin);
+LUSTRE_STATIC_UINT_ATTR(at_history, &at_history);
+
+static struct attribute *lustre_attrs[] = {
+ &lustre_sattr_timeout.u.attr,
+ &lustre_attr_max_dirty_mb.attr,
+ &lustre_sattr_debug_peer_on_timeout.u.attr,
+ &lustre_sattr_dump_on_timeout.u.attr,
+ &lustre_sattr_dump_on_eviction.u.attr,
+ &lustre_sattr_at_min.u.attr,
+ &lustre_sattr_at_max.u.attr,
+ &lustre_sattr_at_extra.u.attr,
+ &lustre_sattr_at_early_margin.u.attr,
+ &lustre_sattr_at_history.u.attr,
+ NULL,
+};
+
+static const struct attribute_group lustre_attr_group = {
+ .attrs = lustre_attrs,
+};
+
+int obd_sysctl_init(void)
+{
+ return sysfs_create_group(lustre_kobj, &lustre_attr_group);
+}

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