-/*
- * 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, 2017, 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/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;
- unsigned int val;
- int rc;
-
- 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)
-{
- unsigned long val;
- int rc;
-
- 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);
-
-#ifdef HAVE_SERVER_SUPPORT
-LUSTRE_STATIC_UINT_ATTR(ldlm_timeout, &ldlm_timeout);
-LUSTRE_STATIC_UINT_ATTR(bulk_timeout, &bulk_timeout);
-#endif
-
-static ssize_t memused_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%llu\n", obd_memory_sum());
-}
-LUSTRE_RO_ATTR(memused);
-
-static ssize_t memused_max_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%llu\n", obd_memory_max());
-}
-LUSTRE_RO_ATTR(memused_max);
-
-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,
- &lustre_attr_memused_max.attr,
- &lustre_attr_memused.attr,
-#ifdef HAVE_SERVER_SUPPORT
- &lustre_sattr_ldlm_timeout.u.attr,
- &lustre_sattr_bulk_timeout.u.attr,
-#endif
- NULL,
-};
-
-static struct attribute_group lustre_attr_group = {
- .attrs = lustre_attrs,
-};
-
-int obd_sysctl_init(void)
-{
- return sysfs_create_group(&lustre_kset->kobj, &lustre_attr_group);
-}
-
-void obd_sysctl_clean(void)
-{
- sysfs_remove_group(&lustre_kset->kobj, &lustre_attr_group);
-}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff