-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2002 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License 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).
*
- * Lustre 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 for more details.
+ * 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
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
*
- * Top level header file for LProc SNMP
- * Author: Hariharan Thantry thantry@users.sourceforge.net
+ * GPL HEADER END
*/
-#ifndef _LPROCFS_SNMP_H
-#define _LPROCFS_SNMP_H
-
-#ifdef __KERNEL__
-#include <linux/autoconf.h>
-#include <linux/proc_fs.h>
-#endif
-
-#ifndef LPROCFS
-#ifdef CONFIG_PROC_FS /* Ensure that /proc is configured */
-#define LPROCFS
-#endif
-#endif
-
-struct lprocfs_vars {
- const char *name;
- read_proc_t *read_fptr;
- write_proc_t *write_fptr;
- void *data;
-};
-
-struct lprocfs_static_vars {
- struct lprocfs_vars *module_vars;
- struct lprocfs_vars *obd_vars;
-};
-
-/* Lprocfs counters are can be configured using the enum bit masks below.
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * LPROCFS_CNTR_EXTERNALLOCK indicates that an external lock already
- * protects this counter from concurrent updates. If not specified,
- * lprocfs an internal per-counter lock variable. External locks are
- * not used to protect counter increments, but are used to protect
- * counter readout and resets.
+ * Copyright (c) 2011, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*
- * LPROCFS_CNTR_AVGMINMAX indicates a multi-valued counter samples,
- * (i.e. counter can be incremented by more than "1"). When specified,
- * the counter maintains min, max and sum in addition to a simple
- * invocation count. This allows averages to be be computed.
- * If not specified, the counter is an increment-by-1 counter.
- * min, max, sum, etc. are not maintained.
+ * lustre/include/linux/lprocfs_status.h
*
- * LPROCFS_CNTR_STDDEV indicates that the counter should track sum of
- * squares (for multi-valued counter samples only). This allows
- * external computation of standard deviation, but involves a 64-bit
- * multiply per counter increment.
- */
-
-enum {
- LPROCFS_CNTR_EXTERNALLOCK = 1,
- LPROCFS_CNTR_AVGMINMAX = 2,
- LPROCFS_CNTR_STDDEV = 4,
-};
-
-struct lprocfs_counter {
- union {
- spinlock_t internal; /* when there is no external lock */
- spinlock_t *external; /* external lock, when available */
- } l;
- unsigned int config;
- __u64 count;
- __u64 sum;
- __u64 min;
- __u64 max;
- __u64 sumsquare;
- const char *name; /* must be static */
- const char *units; /* must be static */
-};
-
-
-struct lprocfs_counters {
- unsigned int num;
- unsigned int padto8byteboundary;
- struct lprocfs_counter cntr[0];
-};
-
-
-/* class_obd.c */
-extern struct proc_dir_entry *proc_lustre_root;
-struct obd_device;
-
-#ifdef LPROCFS
-
-/* Two optimized LPROCFS counter increment macros are provided:
- * LPROCFS_COUNTER_INCR(cntr, value) - use for multi-valued counters
- * LPROCFS_COUNTER_INCBY1(cntr) - optimized for by-one counters
- * Counter data layout allows config flag, counter lock and the
- * count itself to reside within a single cache line.
+ * Top level header file for LProc SNMP
+ *
+ * Author: Hariharan Thantry thantry@users.sourceforge.net
*/
+#ifndef _LINUX_LPROCFS_SNMP_H
+#define _LINUX_LPROCFS_SNMP_H
-#define LPROCFS_COUNTER_INCR(cntr, value) \
- do { \
- struct lprocfs_counter *c = (cntr); \
- LASSERT(c != NULL); \
- if (!(c->config & LPROCFS_CNTR_EXTERNALLOCK)) \
- spin_lock(&c->l.internal); \
- c->count++; \
- if (c->config & LPROCFS_CNTR_AVGMINMAX) { \
- __u64 val = (__u64) (value); \
- c->sum += val; \
- if (c->config & LPROCFS_CNTR_STDDEV) \
- c->sumsquare += (val*val); \
- if (val < c->min) c->min = val; \
- if (val > c->max) c->max = val; \
- } \
- if (!(c->config & LPROCFS_CNTR_EXTERNALLOCK)) \
- spin_unlock(&c->l.internal); \
- } while (0)
-
-#define LPROCFS_COUNTER_INCBY1(cntr) \
- do { \
- struct lprocfs_counter *c = (cntr); \
- LASSERT(c != NULL); \
- if (!(c->config & LPROCFS_CNTR_EXTERNALLOCK)) \
- spin_lock(&c->l.internal); \
- c->count++; \
- if (!(c->config & LPROCFS_CNTR_EXTERNALLOCK)) \
- spin_unlock(&c->l.internal); \
- } while (0)
-
-#define LPROCFS_COUNTER_INIT(cntr, conf, lck, nam, un) \
- do { \
- struct lprocfs_counter *c = (cntr); \
- LASSERT(c != NULL); \
- memset(c, 0, sizeof(struct lprocfs_counter)); \
- if (conf & LPROCFS_CNTR_EXTERNALLOCK) c->l.external = (lck); \
- else spin_lock_init(&c->l.internal); \
- c->config = conf; \
- c->min = (~(__u64)0); \
- c->name = (nam); \
- c->units = (un); \
- } while (0)
-
-extern struct lprocfs_counters* lprocfs_alloc_counters(unsigned int num);
-extern void lprocfs_free_counters(struct lprocfs_counters* cntrs);
-extern int lprocfs_alloc_obd_counters(struct obd_device *obddev,
- unsigned int num_private_counters);
-extern void lprocfs_free_obd_counters(struct obd_device *obddev);
-extern int lprocfs_register_counters(struct proc_dir_entry *root,
- const char* name,
- struct lprocfs_counters *cntrs);
-
-#define LPROCFS_INIT_MULTI_VARS(array, size) \
-void lprocfs_init_multi_vars(unsigned int idx, \
- struct lprocfs_static_vars *x) \
-{ \
- struct lprocfs_static_vars *glob = (struct lprocfs_static_vars*)array; \
- LASSERT(glob != 0); \
- LASSERT(idx < (unsigned int)(size)); \
- x->module_vars = glob[idx].module_vars; \
- x->obd_vars = glob[idx].obd_vars; \
-} \
-
-#define LPROCFS_INIT_VARS(vclass, vinstance) \
-void lprocfs_init_vars(struct lprocfs_static_vars *x) \
-{ \
- x->module_vars = vclass; \
- x->obd_vars = vinstance; \
-} \
-
-extern void lprocfs_init_vars(struct lprocfs_static_vars *var);
-extern void lprocfs_init_multi_vars(unsigned int idx,
- struct lprocfs_static_vars *var);
-/* lprocfs_status.c */
-extern int lprocfs_add_vars(struct proc_dir_entry *root,
- struct lprocfs_vars *var,
- void *data);
-
-extern struct proc_dir_entry *lprocfs_register(const char *name,
- struct proc_dir_entry *parent,
- struct lprocfs_vars *list,
- void *data);
-
-extern void lprocfs_remove(struct proc_dir_entry *root);
-
-extern int lprocfs_obd_attach(struct obd_device *dev, struct lprocfs_vars *list);
-extern int lprocfs_obd_detach(struct obd_device *dev);
-
-/* Generic callbacks */
-
-extern int lprocfs_rd_u64(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-extern int lprocfs_rd_uuid(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-extern int lprocfs_rd_name(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-extern int lprocfs_rd_server_uuid(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-extern int lprocfs_rd_conn_uuid(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-extern int lprocfs_rd_numrefs(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-
-/* Statfs helpers */
-struct statfs;
-extern int lprocfs_rd_blksize(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs);
-extern int lprocfs_rd_kbytestotal(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs);
-extern int lprocfs_rd_kbytesfree(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs);
-extern int lprocfs_rd_filestotal(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs);
-extern int lprocfs_rd_filesfree(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs);
-extern int lprocfs_rd_filegroups(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs);
-
-/* lprocfs_status.c: counter read/write functions */
-struct file;
-extern int lprocfs_counter_read(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-extern int lprocfs_counter_write(struct file *file, const char *buffer,
- unsigned long count, void *data);
+#ifndef _LPROCFS_SNMP_H
+#error Do not #include this file directly. #include <lprocfs_status.h> instead
+#endif
-#define DEFINE_LPROCFS_STATFS_FCT(fct_name, get_statfs_fct) \
-int fct_name(char *page, char **start, off_t off, \
- int count, int *eof, void *data) \
-{ \
- struct statfs sfs; \
- int rc = get_statfs_fct((struct obd_device*)data, &sfs); \
- return (rc == 0 ? \
- lprocfs_##fct_name (page, start, off, count, eof, &sfs) : \
- rc); \
-}
+#ifdef __KERNEL__
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/version.h>
+#include <linux/smp.h>
+#include <linux/rwsem.h>
+#include <libcfs/libcfs.h>
+#include <linux/statfs.h>
#else
-/* LPROCFS is not defined */
-#define LPROCFS_COUNTER_INCR(cntr, value)
-#define LPROCFS_COUNTER_INCBY1(cntr)
-#define LPROCFS_COUNTER_INIT(cntr, conf, lock, nam, un)
-
-static inline struct lprocfs_counters* lprocfs_alloc_counters(unsigned int num)
-{ return NULL; }
-static inline void lprocfs_free_counters(struct lprocfs_counters* cntrs)
-{ return; }
-
-static inline int lprocfs_register_counters(struct proc_dir_entry *root,
- const char* name,
- struct lprocfs_counters *cntrs)
-{ return 0; }
-static inline int lprocfs_alloc_obd_counters(struct obd_device *obddev,
- unsigned int num_private_counters)
-{ return 0; }
-static inline void lprocfs_free_obd_counters(struct obd_device *obddev)
-{ return; }
-
-static inline struct proc_dir_entry *
-lprocfs_register(const char *name, struct proc_dir_entry *parent,
- struct lprocfs_vars *list, void *data) { return NULL; }
-#define LPROCFS_INIT_MULTI_VARS(array, size)
-static inline void lprocfs_init_multi_vars(unsigned int idx,
- struct lprocfs_static_vars *x) { return; }
-#define LPROCFS_INIT_VARS(vclass, vinstance)
-static inline void lprocfs_init_vars(struct lprocfs_static_vars *x) { return; }
-static inline int lprocfs_add_vars(struct proc_dir_entry *root,
- struct lprocfs_vars *var,
- void *data) { return 0; }
-static inline void lprocfs_remove(struct proc_dir_entry *root) {};
-struct obd_device;
-static inline int lprocfs_obd_attach(struct obd_device *dev,
- struct lprocfs_vars *list) { return 0; }
-static inline int lprocfs_obd_detach(struct obd_device *dev) { return 0; }
-static inline int lprocfs_rd_u64(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-static inline int lprocfs_rd_uuid(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-static inline int lprocfs_rd_name(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-static inline int lprocfs_rd_server_uuid(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-static inline int lprocfs_rd_conn_uuid(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-static inline int lprocfs_rd_numrefs(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-
-/* Statfs helpers */
-struct statfs;
-static inline
-int lprocfs_rd_blksize(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs) { return 0; }
-static inline
-int lprocfs_rd_kbytestotal(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs) { return 0; }
-static inline
-int lprocfs_rd_kbytesfree(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs) { return 0; }
-static inline
-int lprocfs_rd_filestotal(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs) { return 0; }
-static inline
-int lprocfs_rd_filesfree(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs) { return 0; }
-static inline
-int lprocfs_rd_filegroups(char *page, char **start, off_t off,
- int count, int *eof, struct statfs *sfs) { return 0; }
-static inline
-int lprocfs_counter_read(char *page, char **start, off_t off,
- int count, int *eof, void *data) { return 0; }
-struct file;
-static inline
-int lprocfs_counter_write(struct file *file, const char *buffer,
- unsigned long count, void *data) { return 0; }
-
-#define DEFINE_LPROCFS_STATFS_FCT(fct_name, get_statfs_fct) \
-int fct_name(char *page, char **start, off_t off, \
- int count, int *eof, void *data) { *eof = 1; return 0; }
-
-#endif /* LPROCFS */
+typedef struct statfs cfs_kstatfs_t;
+#endif
#endif /* LPROCFS_SNMP_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff