--- /dev/null
+/*
+ * 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) 2002, 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/lprocfs_status.c
+ *
+ * Author: Hariharan Thantry <thantry@users.sourceforge.net>
+ */
+
+#define DEBUG_SUBSYSTEM S_CLASS
+
+
+#include "../include/obd_class.h"
+#include "../include/lprocfs_status.h"
+#include "../include/lustre/lustre_idl.h"
+#include <linux/seq_file.h>
+#include <linux/ctype.h>
+
+static const char * const obd_connect_names[] = {
+ "read_only",
+ "lov_index",
+ "unused",
+ "write_grant",
+ "server_lock",
+ "version",
+ "request_portal",
+ "acl",
+ "xattr",
+ "create_on_write",
+ "truncate_lock",
+ "initial_transno",
+ "inode_bit_locks",
+ "join_file(obsolete)",
+ "getattr_by_fid",
+ "no_oh_for_devices",
+ "remote_client",
+ "remote_client_by_force",
+ "max_byte_per_rpc",
+ "64bit_qdata",
+ "mds_capability",
+ "oss_capability",
+ "early_lock_cancel",
+ "som",
+ "adaptive_timeouts",
+ "lru_resize",
+ "mds_mds_connection",
+ "real_conn",
+ "change_qunit_size",
+ "alt_checksum_algorithm",
+ "fid_is_enabled",
+ "version_recovery",
+ "pools",
+ "grant_shrink",
+ "skip_orphan",
+ "large_ea",
+ "full20",
+ "layout_lock",
+ "64bithash",
+ "object_max_bytes",
+ "imp_recov",
+ "jobstats",
+ "umask",
+ "einprogress",
+ "grant_param",
+ "flock_owner",
+ "lvb_type",
+ "nanoseconds_times",
+ "lightweight_conn",
+ "short_io",
+ "pingless",
+ "flock_deadlock",
+ "disp_stripe",
+ "unknown",
+ NULL
+};
+
+int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
+{
+ __u64 mask = 1;
+ int i, ret = 0;
+
+ for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+ if (flags & mask)
+ ret += snprintf(page + ret, count - ret, "%s%s",
+ ret ? sep : "", obd_connect_names[i]);
+ }
+ if (flags & ~(mask - 1))
+ ret += snprintf(page + ret, count - ret,
+ "%sunknown flags %#llx",
+ ret ? sep : "", flags & ~(mask - 1));
+ return ret;
+}
+EXPORT_SYMBOL(obd_connect_flags2str);
+
+int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
+ int mult)
+{
+ long decimal_val, frac_val;
+ int prtn;
+
+ if (count < 10)
+ return -EINVAL;
+
+ decimal_val = val / mult;
+ prtn = snprintf(buffer, count, "%ld", decimal_val);
+ frac_val = val % mult;
+
+ if (prtn < (count - 4) && frac_val > 0) {
+ long temp_frac;
+ int i, temp_mult = 1, frac_bits = 0;
+
+ temp_frac = frac_val * 10;
+ buffer[prtn++] = '.';
+ while (frac_bits < 2 && (temp_frac / mult) < 1) {
+ /* only reserved 2 bits fraction */
+ buffer[prtn++] = '0';
+ temp_frac *= 10;
+ frac_bits++;
+ }
+ /*
+ * Need to think these cases :
+ * 1. #echo x.00 > /proc/xxx output result : x
+ * 2. #echo x.0x > /proc/xxx output result : x.0x
+ * 3. #echo x.x0 > /proc/xxx output result : x.x
+ * 4. #echo x.xx > /proc/xxx output result : x.xx
+ * Only reserved 2 bits fraction.
+ */
+ for (i = 0; i < (5 - prtn); i++)
+ temp_mult *= 10;
+
+ frac_bits = min((int)count - prtn, 3 - frac_bits);
+ prtn += snprintf(buffer + prtn, frac_bits, "%ld",
+ frac_val * temp_mult / mult);
+
+ prtn--;
+ while (buffer[prtn] < '1' || buffer[prtn] > '9') {
+ prtn--;
+ if (buffer[prtn] == '.') {
+ prtn--;
+ break;
+ }
+ }
+ prtn++;
+ }
+ buffer[prtn++] = '\n';
+ return prtn;
+}
+EXPORT_SYMBOL(lprocfs_read_frac_helper);
+
+int lprocfs_write_frac_helper(const char __user *buffer, unsigned long count,
+ int *val, int mult)
+{
+ char kernbuf[20], *end, *pbuf;
+
+ if (count > (sizeof(kernbuf) - 1))
+ return -EINVAL;
+
+ if (copy_from_user(kernbuf, buffer, count))
+ return -EFAULT;
+
+ kernbuf[count] = '\0';
+ pbuf = kernbuf;
+ if (*pbuf == '-') {
+ mult = -mult;
+ pbuf++;
+ }
+
+ *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
+ if (pbuf == end)
+ return -EINVAL;
+
+ if (end != NULL && *end == '.') {
+ int temp_val, pow = 1;
+ int i;
+
+ pbuf = end + 1;
+ if (strlen(pbuf) > 5)
+ pbuf[5] = '\0'; /*only allow 5bits fractional*/
+
+ temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
+
+ if (pbuf < end) {
+ for (i = 0; i < (end - pbuf); i++)
+ pow *= 10;
+
+ *val += temp_val / pow;
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_write_frac_helper);
+
+#if defined (CONFIG_PROC_FS)
+
+static int lprocfs_no_percpu_stats;
+module_param(lprocfs_no_percpu_stats, int, 0644);
+MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
+
+#define MAX_STRING_SIZE 128
+
+int lprocfs_single_release(struct inode *inode, struct file *file)
+{
+ return single_release(inode, file);
+}
+EXPORT_SYMBOL(lprocfs_single_release);
+
+int lprocfs_seq_release(struct inode *inode, struct file *file)
+{
+ return seq_release(inode, file);
+}
+EXPORT_SYMBOL(lprocfs_seq_release);
+
+/* lprocfs API calls */
+
+struct proc_dir_entry *lprocfs_add_simple(struct proc_dir_entry *root,
+ char *name, void *data,
+ struct file_operations *fops)
+{
+ struct proc_dir_entry *proc;
+ umode_t mode = 0;
+
+ if (root == NULL || name == NULL || fops == NULL)
+ return ERR_PTR(-EINVAL);
+
+ if (fops->read)
+ mode = 0444;
+ if (fops->write)
+ mode |= 0200;
+ proc = proc_create_data(name, mode, root, fops, data);
+ if (!proc) {
+ CERROR("LprocFS: No memory to create /proc entry %s", name);
+ return ERR_PTR(-ENOMEM);
+ }
+ return proc;
+}
+EXPORT_SYMBOL(lprocfs_add_simple);
+
+struct proc_dir_entry *lprocfs_add_symlink(const char *name,
+ struct proc_dir_entry *parent, const char *format, ...)
+{
+ struct proc_dir_entry *entry;
+ char *dest;
+ va_list ap;
+
+ if (parent == NULL || format == NULL)
+ return NULL;
+
+ OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
+ if (dest == NULL)
+ return NULL;
+
+ va_start(ap, format);
+ vsnprintf(dest, MAX_STRING_SIZE, format, ap);
+ va_end(ap);
+
+ entry = proc_symlink(name, parent, dest);
+ if (entry == NULL)
+ CERROR("LprocFS: Could not create symbolic link from %s to %s",
+ name, dest);
+
+ OBD_FREE(dest, MAX_STRING_SIZE + 1);
+ return entry;
+}
+EXPORT_SYMBOL(lprocfs_add_symlink);
+
+static struct file_operations lprocfs_generic_fops = { };
+
+/**
+ * Add /proc entries.
+ *
+ * \param root [in] The parent proc entry on which new entry will be added.
+ * \param list [in] Array of proc entries to be added.
+ * \param data [in] The argument to be passed when entries read/write routines
+ * are called through /proc file.
+ *
+ * \retval 0 on success
+ * < 0 on error
+ */
+int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
+ void *data)
+{
+ if (root == NULL || list == NULL)
+ return -EINVAL;
+
+ while (list->name != NULL) {
+ struct proc_dir_entry *proc;
+ umode_t mode = 0;
+
+ if (list->proc_mode != 0000) {
+ mode = list->proc_mode;
+ } else if (list->fops) {
+ if (list->fops->read)
+ mode = 0444;
+ if (list->fops->write)
+ mode |= 0200;
+ }
+ proc = proc_create_data(list->name, mode, root,
+ list->fops ?: &lprocfs_generic_fops,
+ list->data ?: data);
+ if (proc == NULL)
+ return -ENOMEM;
+ list++;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_add_vars);
+
+void lprocfs_remove(struct proc_dir_entry **rooth)
+{
+ proc_remove(*rooth);
+ *rooth = NULL;
+}
+EXPORT_SYMBOL(lprocfs_remove);
+
+void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
+{
+ LASSERT(parent != NULL);
+ remove_proc_entry(name, parent);
+}
+EXPORT_SYMBOL(lprocfs_remove_proc_entry);
+
+struct proc_dir_entry *lprocfs_register(const char *name,
+ struct proc_dir_entry *parent,
+ struct lprocfs_vars *list, void *data)
+{
+ struct proc_dir_entry *entry;
+
+ entry = proc_mkdir(name, parent);
+ if (entry == NULL) {
+ entry = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+
+ if (list != NULL) {
+ int rc = lprocfs_add_vars(entry, list, data);
+ if (rc != 0) {
+ lprocfs_remove(&entry);
+ entry = ERR_PTR(rc);
+ }
+ }
+out:
+ return entry;
+}
+EXPORT_SYMBOL(lprocfs_register);
+
+/* Generic callbacks */
+int lprocfs_rd_uint(struct seq_file *m, void *data)
+{
+ seq_printf(m, "%u\n", *(unsigned int *)data);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_uint);
+
+int lprocfs_wr_uint(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ unsigned *p = data;
+ char dummy[MAX_STRING_SIZE + 1], *end;
+ unsigned long tmp;
+
+ dummy[MAX_STRING_SIZE] = '\0';
+ if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
+ return -EFAULT;
+
+ tmp = simple_strtoul(dummy, &end, 0);
+ if (dummy == end)
+ return -EINVAL;
+
+ *p = (unsigned int)tmp;
+ return count;
+}
+EXPORT_SYMBOL(lprocfs_wr_uint);
+
+int lprocfs_rd_u64(struct seq_file *m, void *data)
+{
+ seq_printf(m, "%llu\n", *(__u64 *)data);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_u64);
+
+int lprocfs_rd_atomic(struct seq_file *m, void *data)
+{
+ atomic_t *atom = data;
+ LASSERT(atom != NULL);
+ seq_printf(m, "%d\n", atomic_read(atom));
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_atomic);
+
+int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ atomic_t *atm = data;
+ int val = 0;
+ int rc;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc < 0)
+ return rc;
+
+ if (val <= 0)
+ return -ERANGE;
+
+ atomic_set(atm, val);
+ return count;
+}
+EXPORT_SYMBOL(lprocfs_wr_atomic);
+
+int lprocfs_rd_uuid(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+
+ LASSERT(obd != NULL);
+ seq_printf(m, "%s\n", obd->obd_uuid.uuid);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_uuid);
+
+int lprocfs_rd_name(struct seq_file *m, void *data)
+{
+ struct obd_device *dev = data;
+
+ LASSERT(dev != NULL);
+ seq_printf(m, "%s\n", dev->obd_name);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_name);
+
+int lprocfs_rd_blksize(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_statfs osfs;
+ int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ OBD_STATFS_NODELAY);
+ if (!rc)
+ seq_printf(m, "%u\n", osfs.os_bsize);
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_blksize);
+
+int lprocfs_rd_kbytestotal(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_statfs osfs;
+ int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ OBD_STATFS_NODELAY);
+ if (!rc) {
+ __u32 blk_size = osfs.os_bsize >> 10;
+ __u64 result = osfs.os_blocks;
+
+ while (blk_size >>= 1)
+ result <<= 1;
+
+ seq_printf(m, "%llu\n", result);
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
+
+int lprocfs_rd_kbytesfree(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_statfs osfs;
+ int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ OBD_STATFS_NODELAY);
+ if (!rc) {
+ __u32 blk_size = osfs.os_bsize >> 10;
+ __u64 result = osfs.os_bfree;
+
+ while (blk_size >>= 1)
+ result <<= 1;
+
+ seq_printf(m, "%llu\n", result);
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
+
+int lprocfs_rd_kbytesavail(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_statfs osfs;
+ int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ OBD_STATFS_NODELAY);
+ if (!rc) {
+ __u32 blk_size = osfs.os_bsize >> 10;
+ __u64 result = osfs.os_bavail;
+
+ while (blk_size >>= 1)
+ result <<= 1;
+
+ seq_printf(m, "%llu\n", result);
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
+
+int lprocfs_rd_filestotal(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_statfs osfs;
+ int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ OBD_STATFS_NODELAY);
+ if (!rc)
+ seq_printf(m, "%llu\n", osfs.os_files);
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_filestotal);
+
+int lprocfs_rd_filesfree(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_statfs osfs;
+ int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
+ cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+ OBD_STATFS_NODELAY);
+ if (!rc)
+ seq_printf(m, "%llu\n", osfs.os_ffree);
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_filesfree);
+
+int lprocfs_rd_server_uuid(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_import *imp;
+ char *imp_state_name = NULL;
+
+ LASSERT(obd != NULL);
+ LPROCFS_CLIMP_CHECK(obd);
+ imp = obd->u.cli.cl_import;
+ imp_state_name = ptlrpc_import_state_name(imp->imp_state);
+ seq_printf(m, "%s\t%s%s\n",
+ obd2cli_tgt(obd), imp_state_name,
+ imp->imp_deactive ? "\tDEACTIVATED" : "");
+
+ LPROCFS_CLIMP_EXIT(obd);
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_server_uuid);
+
+int lprocfs_rd_conn_uuid(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ struct ptlrpc_connection *conn;
+
+ LASSERT(obd != NULL);
+
+ LPROCFS_CLIMP_CHECK(obd);
+ conn = obd->u.cli.cl_import->imp_connection;
+ if (conn && obd->u.cli.cl_import)
+ seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
+ else
+ seq_puts(m, "<none>\n");
+
+ LPROCFS_CLIMP_EXIT(obd);
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
+
+/** add up per-cpu counters */
+void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
+ struct lprocfs_counter *cnt)
+{
+ unsigned int num_entry;
+ struct lprocfs_counter *percpu_cntr;
+ int i;
+ unsigned long flags = 0;
+
+ memset(cnt, 0, sizeof(*cnt));
+
+ if (stats == NULL) {
+ /* set count to 1 to avoid divide-by-zero errs in callers */
+ cnt->lc_count = 1;
+ return;
+ }
+
+ cnt->lc_min = LC_MIN_INIT;
+
+ num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
+
+ for (i = 0; i < num_entry; i++) {
+ if (stats->ls_percpu[i] == NULL)
+ continue;
+ percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
+
+ cnt->lc_count += percpu_cntr->lc_count;
+ cnt->lc_sum += percpu_cntr->lc_sum;
+ if (percpu_cntr->lc_min < cnt->lc_min)
+ cnt->lc_min = percpu_cntr->lc_min;
+ if (percpu_cntr->lc_max > cnt->lc_max)
+ cnt->lc_max = percpu_cntr->lc_max;
+ cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
+ }
+
+ lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
+}
+EXPORT_SYMBOL(lprocfs_stats_collect);
+
+/**
+ * Append a space separated list of current set flags to str.
+ */
+#define flag2str(flag, first) \
+ do { \
+ if (imp->imp_##flag) \
+ seq_printf(m, "%s" #flag, first ? "" : ", "); \
+ } while (0)
+static int obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
+{
+ bool first = true;
+
+ if (imp->imp_obd->obd_no_recov) {
+ seq_printf(m, "no_recov");
+ first = false;
+ }
+
+ flag2str(invalid, first);
+ first = false;
+ flag2str(deactive, first);
+ flag2str(replayable, first);
+ flag2str(pingable, first);
+ return 0;
+}
+#undef flags2str
+
+static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
+{
+ __u64 mask = 1;
+ int i;
+ bool first = true;
+
+ for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+ if (flags & mask) {
+ seq_printf(m, "%s%s",
+ first ? sep : "", obd_connect_names[i]);
+ first = false;
+ }
+ }
+ if (flags & ~(mask - 1))
+ seq_printf(m, "%sunknown flags %#llx",
+ first ? sep : "", flags & ~(mask - 1));
+}
+
+int lprocfs_rd_import(struct seq_file *m, void *data)
+{
+ struct lprocfs_counter ret;
+ struct lprocfs_counter_header *header;
+ struct obd_device *obd = (struct obd_device *)data;
+ struct obd_import *imp;
+ struct obd_import_conn *conn;
+ int j;
+ int k;
+ int rw = 0;
+
+ LASSERT(obd != NULL);
+ LPROCFS_CLIMP_CHECK(obd);
+ imp = obd->u.cli.cl_import;
+
+ seq_printf(m,
+ "import:\n"
+ " name: %s\n"
+ " target: %s\n"
+ " state: %s\n"
+ " instance: %u\n"
+ " connect_flags: [",
+ obd->obd_name,
+ obd2cli_tgt(obd),
+ ptlrpc_import_state_name(imp->imp_state),
+ imp->imp_connect_data.ocd_instance);
+ obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags, ", ");
+ seq_printf(m,
+ "]\n"
+ " import_flags: [");
+ obd_import_flags2str(imp, m);
+
+ seq_printf(m,
+ "]\n"
+ " connection:\n"
+ " failover_nids: [");
+ spin_lock(&imp->imp_lock);
+ j = 0;
+ list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
+ seq_printf(m, "%s%s", j ? ", " : "",
+ libcfs_nid2str(conn->oic_conn->c_peer.nid));
+ j++;
+ }
+ seq_printf(m,
+ "]\n"
+ " current_connection: %s\n"
+ " connection_attempts: %u\n"
+ " generation: %u\n"
+ " in-progress_invalidations: %u\n",
+ imp->imp_connection == NULL ? "<none>" :
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ imp->imp_conn_cnt,
+ imp->imp_generation,
+ atomic_read(&imp->imp_inval_count));
+ spin_unlock(&imp->imp_lock);
+
+ if (obd->obd_svc_stats == NULL)
+ goto out_climp;
+
+ header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
+ lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
+ if (ret.lc_count != 0) {
+ /* first argument to do_div MUST be __u64 */
+ __u64 sum = ret.lc_sum;
+ do_div(sum, ret.lc_count);
+ ret.lc_sum = sum;
+ } else
+ ret.lc_sum = 0;
+ seq_printf(m,
+ " rpcs:\n"
+ " inflight: %u\n"
+ " unregistering: %u\n"
+ " timeouts: %u\n"
+ " avg_waittime: %llu %s\n",
+ atomic_read(&imp->imp_inflight),
+ atomic_read(&imp->imp_unregistering),
+ atomic_read(&imp->imp_timeouts),
+ ret.lc_sum, header->lc_units);
+
+ k = 0;
+ for (j = 0; j < IMP_AT_MAX_PORTALS; j++) {
+ if (imp->imp_at.iat_portal[j] == 0)
+ break;
+ k = max_t(unsigned int, k,
+ at_get(&imp->imp_at.iat_service_estimate[j]));
+ }
+ seq_printf(m,
+ " service_estimates:\n"
+ " services: %u sec\n"
+ " network: %u sec\n",
+ k,
+ at_get(&imp->imp_at.iat_net_latency));
+
+ seq_printf(m,
+ " transactions:\n"
+ " last_replay: %llu\n"
+ " peer_committed: %llu\n"
+ " last_checked: %llu\n",
+ imp->imp_last_replay_transno,
+ imp->imp_peer_committed_transno,
+ imp->imp_last_transno_checked);
+
+ /* avg data rates */
+ for (rw = 0; rw <= 1; rw++) {
+ lprocfs_stats_collect(obd->obd_svc_stats,
+ PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
+ &ret);
+ if (ret.lc_sum > 0 && ret.lc_count > 0) {
+ /* first argument to do_div MUST be __u64 */
+ __u64 sum = ret.lc_sum;
+ do_div(sum, ret.lc_count);
+ ret.lc_sum = sum;
+ seq_printf(m,
+ " %s_data_averages:\n"
+ " bytes_per_rpc: %llu\n",
+ rw ? "write" : "read",
+ ret.lc_sum);
+ }
+ k = (int)ret.lc_sum;
+ j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
+ header = &obd->obd_svc_stats->ls_cnt_header[j];
+ lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
+ if (ret.lc_sum > 0 && ret.lc_count != 0) {
+ /* first argument to do_div MUST be __u64 */
+ __u64 sum = ret.lc_sum;
+ do_div(sum, ret.lc_count);
+ ret.lc_sum = sum;
+ seq_printf(m,
+ " %s_per_rpc: %llu\n",
+ header->lc_units, ret.lc_sum);
+ j = (int)ret.lc_sum;
+ if (j > 0)
+ seq_printf(m,
+ " MB_per_sec: %u.%.02u\n",
+ k / j, (100 * k / j) % 100);
+ }
+ }
+
+out_climp:
+ LPROCFS_CLIMP_EXIT(obd);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_import);
+
+int lprocfs_rd_state(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = (struct obd_device *)data;
+ struct obd_import *imp;
+ int j, k;
+
+ LASSERT(obd != NULL);
+ LPROCFS_CLIMP_CHECK(obd);
+ imp = obd->u.cli.cl_import;
+
+ seq_printf(m, "current_state: %s\n",
+ ptlrpc_import_state_name(imp->imp_state));
+ seq_printf(m, "state_history:\n");
+ k = imp->imp_state_hist_idx;
+ for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
+ struct import_state_hist *ish =
+ &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
+ if (ish->ish_state == 0)
+ continue;
+ seq_printf(m, " - ["CFS_TIME_T", %s]\n",
+ ish->ish_time,
+ ptlrpc_import_state_name(ish->ish_state));
+ }
+
+ LPROCFS_CLIMP_EXIT(obd);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_state);
+
+int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
+{
+ int i;
+ for (i = 0; i < AT_BINS; i++)
+ seq_printf(m, "%3u ", at->at_hist[i]);
+ seq_printf(m, "\n");
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_at_hist_helper);
+
+/* See also ptlrpc_lprocfs_rd_timeouts */
+int lprocfs_rd_timeouts(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = (struct obd_device *)data;
+ struct obd_import *imp;
+ unsigned int cur, worst;
+ time_t now, worstt;
+ struct dhms ts;
+ int i;
+
+ LASSERT(obd != NULL);
+ LPROCFS_CLIMP_CHECK(obd);
+ imp = obd->u.cli.cl_import;
+
+ now = get_seconds();
+
+ /* Some network health info for kicks */
+ s2dhms(&ts, now - imp->imp_last_reply_time);
+ seq_printf(m, "%-10s : %ld, "DHMS_FMT" ago\n",
+ "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
+
+ cur = at_get(&imp->imp_at.iat_net_latency);
+ worst = imp->imp_at.iat_net_latency.at_worst_ever;
+ worstt = imp->imp_at.iat_net_latency.at_worst_time;
+ s2dhms(&ts, now - worstt);
+ seq_printf(m, "%-10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ",
+ "network", cur, worst, worstt, DHMS_VARS(&ts));
+ lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
+
+ for (i = 0; i < IMP_AT_MAX_PORTALS; i++) {
+ if (imp->imp_at.iat_portal[i] == 0)
+ break;
+ cur = at_get(&imp->imp_at.iat_service_estimate[i]);
+ worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
+ worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
+ s2dhms(&ts, now - worstt);
+ seq_printf(m, "portal %-2d : cur %3u worst %3u (at %ld, "
+ DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
+ cur, worst, worstt, DHMS_VARS(&ts));
+ lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
+ }
+
+ LPROCFS_CLIMP_EXIT(obd);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_timeouts);
+
+int lprocfs_rd_connect_flags(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+ __u64 flags;
+
+ LPROCFS_CLIMP_CHECK(obd);
+ flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
+ seq_printf(m, "flags=%#llx\n", flags);
+ obd_connect_seq_flags2str(m, flags, "\n");
+ seq_printf(m, "\n");
+ LPROCFS_CLIMP_EXIT(obd);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_connect_flags);
+
+int lprocfs_rd_num_exports(struct seq_file *m, void *data)
+{
+ struct obd_device *obd = data;
+
+ LASSERT(obd != NULL);
+ seq_printf(m, "%u\n", obd->obd_num_exports);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_num_exports);
+
+int lprocfs_rd_numrefs(struct seq_file *m, void *data)
+{
+ struct obd_type *class = (struct obd_type *) data;
+
+ LASSERT(class != NULL);
+ seq_printf(m, "%d\n", class->typ_refcnt);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_rd_numrefs);
+
+int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
+{
+ int rc = 0;
+
+ LASSERT(obd != NULL);
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+ LASSERT(obd->obd_type->typ_procroot != NULL);
+
+ obd->obd_proc_entry = lprocfs_register(obd->obd_name,
+ obd->obd_type->typ_procroot,
+ list, obd);
+ if (IS_ERR(obd->obd_proc_entry)) {
+ rc = PTR_ERR(obd->obd_proc_entry);
+ CERROR("error %d setting up lprocfs for %s\n",
+ rc, obd->obd_name);
+ obd->obd_proc_entry = NULL;
+ }
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_obd_setup);
+
+int lprocfs_obd_cleanup(struct obd_device *obd)
+{
+ if (!obd)
+ return -EINVAL;
+ if (obd->obd_proc_exports_entry) {
+ /* Should be no exports left */
+ lprocfs_remove(&obd->obd_proc_exports_entry);
+ obd->obd_proc_exports_entry = NULL;
+ }
+ if (obd->obd_proc_entry) {
+ lprocfs_remove(&obd->obd_proc_entry);
+ obd->obd_proc_entry = NULL;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_obd_cleanup);
+
+static void lprocfs_free_client_stats(struct nid_stat *client_stat)
+{
+ CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
+ client_stat->nid_proc, client_stat->nid_stats);
+
+ LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
+ "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
+ atomic_read(&client_stat->nid_exp_ref_count));
+
+ if (client_stat->nid_proc)
+ lprocfs_remove(&client_stat->nid_proc);
+
+ if (client_stat->nid_stats)
+ lprocfs_free_stats(&client_stat->nid_stats);
+
+ if (client_stat->nid_ldlm_stats)
+ lprocfs_free_stats(&client_stat->nid_ldlm_stats);
+
+ OBD_FREE_PTR(client_stat);
+ return;
+
+}
+
+void lprocfs_free_per_client_stats(struct obd_device *obd)
+{
+ struct cfs_hash *hash = obd->obd_nid_stats_hash;
+ struct nid_stat *stat;
+
+ /* we need extra list - because hash_exit called to early */
+ /* not need locking because all clients is died */
+ while (!list_empty(&obd->obd_nid_stats)) {
+ stat = list_entry(obd->obd_nid_stats.next,
+ struct nid_stat, nid_list);
+ list_del_init(&stat->nid_list);
+ cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
+ lprocfs_free_client_stats(stat);
+ }
+}
+EXPORT_SYMBOL(lprocfs_free_per_client_stats);
+
+int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
+{
+ struct lprocfs_counter *cntr;
+ unsigned int percpusize;
+ int rc = -ENOMEM;
+ unsigned long flags = 0;
+ int i;
+
+ LASSERT(stats->ls_percpu[cpuid] == NULL);
+ LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
+
+ percpusize = lprocfs_stats_counter_size(stats);
+ LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
+ if (stats->ls_percpu[cpuid] != NULL) {
+ rc = 0;
+ if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
+ spin_lock_irqsave(&stats->ls_lock, flags);
+ else
+ spin_lock(&stats->ls_lock);
+ if (stats->ls_biggest_alloc_num <= cpuid)
+ stats->ls_biggest_alloc_num = cpuid + 1;
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
+ spin_unlock_irqrestore(&stats->ls_lock, flags);
+ else
+ spin_unlock(&stats->ls_lock);
+ }
+ /* initialize the ls_percpu[cpuid] non-zero counter */
+ for (i = 0; i < stats->ls_num; ++i) {
+ cntr = lprocfs_stats_counter_get(stats, cpuid, i);
+ cntr->lc_min = LC_MIN_INIT;
+ }
+ }
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_stats_alloc_one);
+
+struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
+ enum lprocfs_stats_flags flags)
+{
+ struct lprocfs_stats *stats;
+ unsigned int num_entry;
+ unsigned int percpusize = 0;
+ int i;
+
+ if (num == 0)
+ return NULL;
+
+ if (lprocfs_no_percpu_stats != 0)
+ flags |= LPROCFS_STATS_FLAG_NOPERCPU;
+
+ if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
+ num_entry = 1;
+ else
+ num_entry = num_possible_cpus();
+
+ /* alloc percpu pointers for all possible cpu slots */
+ LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
+ if (stats == NULL)
+ return NULL;
+
+ stats->ls_num = num;
+ stats->ls_flags = flags;
+ spin_lock_init(&stats->ls_lock);
+
+ /* alloc num of counter headers */
+ LIBCFS_ALLOC(stats->ls_cnt_header,
+ stats->ls_num * sizeof(struct lprocfs_counter_header));
+ if (stats->ls_cnt_header == NULL)
+ goto fail;
+
+ if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
+ /* contains only one set counters */
+ percpusize = lprocfs_stats_counter_size(stats);
+ LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
+ if (stats->ls_percpu[0] == NULL)
+ goto fail;
+ stats->ls_biggest_alloc_num = 1;
+ } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
+ /* alloc all percpu data, currently only obd_memory use this */
+ for (i = 0; i < num_entry; ++i)
+ if (lprocfs_stats_alloc_one(stats, i) < 0)
+ goto fail;
+ }
+
+ return stats;
+
+fail:
+ lprocfs_free_stats(&stats);
+ return NULL;
+}
+EXPORT_SYMBOL(lprocfs_alloc_stats);
+
+void lprocfs_free_stats(struct lprocfs_stats **statsh)
+{
+ struct lprocfs_stats *stats = *statsh;
+ unsigned int num_entry;
+ unsigned int percpusize;
+ unsigned int i;
+
+ if (stats == NULL || stats->ls_num == 0)
+ return;
+ *statsh = NULL;
+
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
+ num_entry = 1;
+ else
+ num_entry = num_possible_cpus();
+
+ percpusize = lprocfs_stats_counter_size(stats);
+ for (i = 0; i < num_entry; i++)
+ if (stats->ls_percpu[i] != NULL)
+ LIBCFS_FREE(stats->ls_percpu[i], percpusize);
+ if (stats->ls_cnt_header != NULL)
+ LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
+ sizeof(struct lprocfs_counter_header));
+ LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
+}
+EXPORT_SYMBOL(lprocfs_free_stats);
+
+void lprocfs_clear_stats(struct lprocfs_stats *stats)
+{
+ struct lprocfs_counter *percpu_cntr;
+ int i;
+ int j;
+ unsigned int num_entry;
+ unsigned long flags = 0;
+
+ num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
+
+ for (i = 0; i < num_entry; i++) {
+ if (stats->ls_percpu[i] == NULL)
+ continue;
+ for (j = 0; j < stats->ls_num; j++) {
+ percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
+ percpu_cntr->lc_count = 0;
+ percpu_cntr->lc_min = LC_MIN_INIT;
+ percpu_cntr->lc_max = 0;
+ percpu_cntr->lc_sumsquare = 0;
+ percpu_cntr->lc_sum = 0;
+ if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
+ percpu_cntr->lc_sum_irq = 0;
+ }
+ }
+
+ lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
+}
+EXPORT_SYMBOL(lprocfs_clear_stats);
+
+static ssize_t lprocfs_stats_seq_write(struct file *file,
+ const char __user *buf,
+ size_t len, loff_t *off)
+{
+ struct seq_file *seq = file->private_data;
+ struct lprocfs_stats *stats = seq->private;
+
+ lprocfs_clear_stats(stats);
+
+ return len;
+}
+
+static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
+{
+ struct lprocfs_stats *stats = p->private;
+
+ return (*pos < stats->ls_num) ? pos : NULL;
+}
+
+static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
+{
+}
+
+static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ (*pos)++;
+ return lprocfs_stats_seq_start(p, pos);
+}
+
+/* seq file export of one lprocfs counter */
+static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
+{
+ struct lprocfs_stats *stats = p->private;
+ struct lprocfs_counter_header *hdr;
+ struct lprocfs_counter ctr;
+ int idx = *(loff_t *)v;
+
+ if (idx == 0) {
+ struct timeval now;
+ do_gettimeofday(&now);
+ seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
+ "snapshot_time",
+ now.tv_sec, (unsigned long)now.tv_usec);
+ }
+
+ hdr = &stats->ls_cnt_header[idx];
+ lprocfs_stats_collect(stats, idx, &ctr);
+
+ if (ctr.lc_count != 0) {
+ seq_printf(p, "%-25s %lld samples [%s]",
+ hdr->lc_name, ctr.lc_count, hdr->lc_units);
+
+ if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) &&
+ (ctr.lc_count > 0)) {
+ seq_printf(p, " %lld %lld %lld",
+ ctr.lc_min, ctr.lc_max, ctr.lc_sum);
+ if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
+ seq_printf(p, " %lld", ctr.lc_sumsquare);
+ }
+ seq_putc(p, '\n');
+ }
+
+ return 0;
+}
+
+static const struct seq_operations lprocfs_stats_seq_sops = {
+ .start = lprocfs_stats_seq_start,
+ .stop = lprocfs_stats_seq_stop,
+ .next = lprocfs_stats_seq_next,
+ .show = lprocfs_stats_seq_show,
+};
+
+static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq;
+ int rc;
+
+ rc = seq_open(file, &lprocfs_stats_seq_sops);
+ if (rc)
+ return rc;
+ seq = file->private_data;
+ seq->private = PDE_DATA(inode);
+ return 0;
+}
+
+struct file_operations lprocfs_stats_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = lprocfs_stats_seq_open,
+ .read = seq_read,
+ .write = lprocfs_stats_seq_write,
+ .llseek = seq_lseek,
+ .release = lprocfs_seq_release,
+};
+
+int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
+ struct lprocfs_stats *stats)
+{
+ struct proc_dir_entry *entry;
+ LASSERT(root != NULL);
+
+ entry = proc_create_data(name, 0644, root,
+ &lprocfs_stats_seq_fops, stats);
+ if (entry == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_register_stats);
+
+void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
+ unsigned conf, const char *name, const char *units)
+{
+ struct lprocfs_counter_header *header;
+ struct lprocfs_counter *percpu_cntr;
+ unsigned long flags = 0;
+ unsigned int i;
+ unsigned int num_cpu;
+
+ LASSERT(stats != NULL);
+
+ header = &stats->ls_cnt_header[index];
+ LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
+ index, name, units);
+
+ header->lc_config = conf;
+ header->lc_name = name;
+ header->lc_units = units;
+
+ num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
+ for (i = 0; i < num_cpu; ++i) {
+ if (stats->ls_percpu[i] == NULL)
+ continue;
+ percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
+ percpu_cntr->lc_count = 0;
+ percpu_cntr->lc_min = LC_MIN_INIT;
+ percpu_cntr->lc_max = 0;
+ percpu_cntr->lc_sumsquare = 0;
+ percpu_cntr->lc_sum = 0;
+ if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
+ percpu_cntr->lc_sum_irq = 0;
+ }
+ lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
+}
+EXPORT_SYMBOL(lprocfs_counter_init);
+
+#define LPROCFS_OBD_OP_INIT(base, stats, op) \
+do { \
+ unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
+ LASSERT(coffset < stats->ls_num); \
+ lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
+} while (0)
+
+void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
+{
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
+ LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
+}
+EXPORT_SYMBOL(lprocfs_init_ops_stats);
+
+int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
+{
+ struct lprocfs_stats *stats;
+ unsigned int num_stats;
+ int rc, i;
+
+ LASSERT(obd->obd_stats == NULL);
+ LASSERT(obd->obd_proc_entry != NULL);
+ LASSERT(obd->obd_cntr_base == 0);
+
+ num_stats = ((int)sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
+ num_private_stats - 1 /* o_owner */;
+ stats = lprocfs_alloc_stats(num_stats, 0);
+ if (stats == NULL)
+ return -ENOMEM;
+
+ lprocfs_init_ops_stats(num_private_stats, stats);
+
+ for (i = num_private_stats; i < num_stats; i++) {
+ /* If this LBUGs, it is likely that an obd
+ * operation was added to struct obd_ops in
+ * <obd.h>, and that the corresponding line item
+ * LPROCFS_OBD_OP_INIT(.., .., opname)
+ * is missing from the list above. */
+ LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
+ "Missing obd_stat initializer obd_op operation at offset %d.\n",
+ i - num_private_stats);
+ }
+ rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
+ if (rc < 0) {
+ lprocfs_free_stats(&stats);
+ } else {
+ obd->obd_stats = stats;
+ obd->obd_cntr_base = num_private_stats;
+ }
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
+
+void lprocfs_free_obd_stats(struct obd_device *obd)
+{
+ if (obd->obd_stats)
+ lprocfs_free_stats(&obd->obd_stats);
+}
+EXPORT_SYMBOL(lprocfs_free_obd_stats);
+
+#define LPROCFS_MD_OP_INIT(base, stats, op) \
+do { \
+ unsigned int coffset = base + MD_COUNTER_OFFSET(op); \
+ LASSERT(coffset < stats->ls_num); \
+ lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
+} while (0)
+
+void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
+{
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, sync);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
+ LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
+}
+EXPORT_SYMBOL(lprocfs_init_mps_stats);
+
+int lprocfs_alloc_md_stats(struct obd_device *obd,
+ unsigned num_private_stats)
+{
+ struct lprocfs_stats *stats;
+ unsigned int num_stats;
+ int rc, i;
+
+ LASSERT(obd->md_stats == NULL);
+ LASSERT(obd->obd_proc_entry != NULL);
+ LASSERT(obd->md_cntr_base == 0);
+
+ num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
+ num_private_stats;
+ stats = lprocfs_alloc_stats(num_stats, 0);
+ if (stats == NULL)
+ return -ENOMEM;
+
+ lprocfs_init_mps_stats(num_private_stats, stats);
+
+ for (i = num_private_stats; i < num_stats; i++) {
+ if (stats->ls_cnt_header[i].lc_name == NULL) {
+ CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
+ i - num_private_stats);
+ LBUG();
+ }
+ }
+ rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
+ if (rc < 0) {
+ lprocfs_free_stats(&stats);
+ } else {
+ obd->md_stats = stats;
+ obd->md_cntr_base = num_private_stats;
+ }
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_alloc_md_stats);
+
+void lprocfs_free_md_stats(struct obd_device *obd)
+{
+ struct lprocfs_stats *stats = obd->md_stats;
+
+ if (stats != NULL) {
+ obd->md_stats = NULL;
+ obd->md_cntr_base = 0;
+ lprocfs_free_stats(&stats);
+ }
+}
+EXPORT_SYMBOL(lprocfs_free_md_stats);
+
+void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
+{
+ lprocfs_counter_init(ldlm_stats,
+ LDLM_ENQUEUE - LDLM_FIRST_OPC,
+ 0, "ldlm_enqueue", "reqs");
+ lprocfs_counter_init(ldlm_stats,
+ LDLM_CONVERT - LDLM_FIRST_OPC,
+ 0, "ldlm_convert", "reqs");
+ lprocfs_counter_init(ldlm_stats,
+ LDLM_CANCEL - LDLM_FIRST_OPC,
+ 0, "ldlm_cancel", "reqs");
+ lprocfs_counter_init(ldlm_stats,
+ LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
+ 0, "ldlm_bl_callback", "reqs");
+ lprocfs_counter_init(ldlm_stats,
+ LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
+ 0, "ldlm_cp_callback", "reqs");
+ lprocfs_counter_init(ldlm_stats,
+ LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
+ 0, "ldlm_gl_callback", "reqs");
+}
+EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
+
+int lprocfs_exp_print_uuid(struct cfs_hash *hs, struct cfs_hash_bd *bd,
+ struct hlist_node *hnode, void *data)
+
+{
+ struct obd_export *exp = cfs_hash_object(hs, hnode);
+ struct seq_file *m = (struct seq_file *)data;
+
+ if (exp->exp_nid_stats)
+ seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
+
+ return 0;
+}
+
+static int
+lproc_exp_uuid_seq_show(struct seq_file *m, void *unused)
+{
+ struct nid_stat *stats = (struct nid_stat *)m->private;
+ struct obd_device *obd = stats->nid_obd;
+
+ cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
+ lprocfs_exp_print_uuid, m);
+ return 0;
+}
+
+LPROC_SEQ_FOPS_RO(lproc_exp_uuid);
+
+struct exp_hash_cb_data {
+ struct seq_file *m;
+ bool first;
+};
+
+int lprocfs_exp_print_hash(struct cfs_hash *hs, struct cfs_hash_bd *bd,
+ struct hlist_node *hnode, void *cb_data)
+
+{
+ struct exp_hash_cb_data *data = (struct exp_hash_cb_data *)cb_data;
+ struct obd_export *exp = cfs_hash_object(hs, hnode);
+
+ if (exp->exp_lock_hash != NULL) {
+ if (data->first) {
+ cfs_hash_debug_header(data->m);
+ data->first = false;
+ }
+ cfs_hash_debug_str(hs, data->m);
+ }
+
+ return 0;
+}
+
+static int
+lproc_exp_hash_seq_show(struct seq_file *m, void *unused)
+{
+ struct nid_stat *stats = (struct nid_stat *)m->private;
+ struct obd_device *obd = stats->nid_obd;
+ struct exp_hash_cb_data cb_data = {
+ .m = m,
+ .first = true
+ };
+
+ cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
+ lprocfs_exp_print_hash, &cb_data);
+ return 0;
+}
+
+LPROC_SEQ_FOPS_RO(lproc_exp_hash);
+
+int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data)
+{
+ seq_printf(m, "%s\n",
+ "Write into this file to clear all nid stats and stale nid entries");
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
+
+static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
+{
+ struct nid_stat *stat = obj;
+
+ CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
+ if (atomic_read(&stat->nid_exp_ref_count) == 1) {
+ /* object has only hash references. */
+ spin_lock(&stat->nid_obd->obd_nid_lock);
+ list_move(&stat->nid_list, data);
+ spin_unlock(&stat->nid_obd->obd_nid_lock);
+ return 1;
+ }
+ /* we has reference to object - only clear data*/
+ if (stat->nid_stats)
+ lprocfs_clear_stats(stat->nid_stats);
+
+ return 0;
+}
+
+int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *obd = (struct obd_device *)data;
+ struct nid_stat *client_stat;
+ LIST_HEAD(free_list);
+
+ cfs_hash_cond_del(obd->obd_nid_stats_hash,
+ lprocfs_nid_stats_clear_write_cb, &free_list);
+
+ while (!list_empty(&free_list)) {
+ client_stat = list_entry(free_list.next, struct nid_stat,
+ nid_list);
+ list_del_init(&client_stat->nid_list);
+ lprocfs_free_client_stats(client_stat);
+ }
+
+ return count;
+}
+EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
+
+int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
+{
+ struct nid_stat *new_stat, *old_stat;
+ struct obd_device *obd = NULL;
+ struct proc_dir_entry *entry;
+ char *buffer = NULL;
+ int rc = 0;
+
+ *newnid = 0;
+
+ if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
+ !exp->exp_obd->obd_nid_stats_hash)
+ return -EINVAL;
+
+ /* not test against zero because eric say:
+ * You may only test nid against another nid, or LNET_NID_ANY.
+ * Anything else is nonsense.*/
+ if (!nid || *nid == LNET_NID_ANY)
+ return 0;
+
+ obd = exp->exp_obd;
+
+ CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
+
+ OBD_ALLOC_PTR(new_stat);
+ if (new_stat == NULL)
+ return -ENOMEM;
+
+ new_stat->nid = *nid;
+ new_stat->nid_obd = exp->exp_obd;
+ /* we need set default refcount to 1 to balance obd_disconnect */
+ atomic_set(&new_stat->nid_exp_ref_count, 1);
+
+ old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
+ nid, &new_stat->nid_hash);
+ CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
+ old_stat, libcfs_nid2str(*nid),
+ atomic_read(&new_stat->nid_exp_ref_count));
+
+ /* We need to release old stats because lprocfs_exp_cleanup() hasn't
+ * been and will never be called. */
+ if (exp->exp_nid_stats) {
+ nidstat_putref(exp->exp_nid_stats);
+ exp->exp_nid_stats = NULL;
+ }
+
+ /* Return -EALREADY here so that we know that the /proc
+ * entry already has been created */
+ if (old_stat != new_stat) {
+ exp->exp_nid_stats = old_stat;
+ rc = -EALREADY;
+ goto destroy_new;
+ }
+ /* not found - create */
+ OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
+ if (buffer == NULL) {
+ rc = -ENOMEM;
+ goto destroy_new;
+ }
+
+ memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
+ new_stat->nid_proc = lprocfs_register(buffer,
+ obd->obd_proc_exports_entry,
+ NULL, NULL);
+ OBD_FREE(buffer, LNET_NIDSTR_SIZE);
+
+ if (IS_ERR(new_stat->nid_proc)) {
+ CERROR("Error making export directory for nid %s\n",
+ libcfs_nid2str(*nid));
+ rc = PTR_ERR(new_stat->nid_proc);
+ new_stat->nid_proc = NULL;
+ goto destroy_new_ns;
+ }
+
+ entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
+ new_stat, &lproc_exp_uuid_fops);
+ if (IS_ERR(entry)) {
+ CWARN("Error adding the NID stats file\n");
+ rc = PTR_ERR(entry);
+ goto destroy_new_ns;
+ }
+
+ entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
+ new_stat, &lproc_exp_hash_fops);
+ if (IS_ERR(entry)) {
+ CWARN("Error adding the hash file\n");
+ rc = PTR_ERR(entry);
+ goto destroy_new_ns;
+ }
+
+ exp->exp_nid_stats = new_stat;
+ *newnid = 1;
+ /* protect competitive add to list, not need locking on destroy */
+ spin_lock(&obd->obd_nid_lock);
+ list_add(&new_stat->nid_list, &obd->obd_nid_stats);
+ spin_unlock(&obd->obd_nid_lock);
+
+ return rc;
+
+destroy_new_ns:
+ if (new_stat->nid_proc != NULL)
+ lprocfs_remove(&new_stat->nid_proc);
+ cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
+
+destroy_new:
+ nidstat_putref(new_stat);
+ OBD_FREE_PTR(new_stat);
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_exp_setup);
+
+int lprocfs_exp_cleanup(struct obd_export *exp)
+{
+ struct nid_stat *stat = exp->exp_nid_stats;
+
+ if (!stat || !exp->exp_obd)
+ return 0;
+
+ nidstat_putref(exp->exp_nid_stats);
+ exp->exp_nid_stats = NULL;
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_exp_cleanup);
+
+__s64 lprocfs_read_helper(struct lprocfs_counter *lc,
+ struct lprocfs_counter_header *header,
+ enum lprocfs_stats_flags flags,
+ enum lprocfs_fields_flags field)
+{
+ __s64 ret = 0;
+
+ if (lc == NULL || header == NULL)
+ return 0;
+
+ switch (field) {
+ case LPROCFS_FIELDS_FLAGS_CONFIG:
+ ret = header->lc_config;
+ break;
+ case LPROCFS_FIELDS_FLAGS_SUM:
+ ret = lc->lc_sum;
+ if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
+ ret += lc->lc_sum_irq;
+ break;
+ case LPROCFS_FIELDS_FLAGS_MIN:
+ ret = lc->lc_min;
+ break;
+ case LPROCFS_FIELDS_FLAGS_MAX:
+ ret = lc->lc_max;
+ break;
+ case LPROCFS_FIELDS_FLAGS_AVG:
+ ret = (lc->lc_max - lc->lc_min) / 2;
+ break;
+ case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
+ ret = lc->lc_sumsquare;
+ break;
+ case LPROCFS_FIELDS_FLAGS_COUNT:
+ ret = lc->lc_count;
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_read_helper);
+
+int lprocfs_write_helper(const char __user *buffer, unsigned long count,
+ int *val)
+{
+ return lprocfs_write_frac_helper(buffer, count, val, 1);
+}
+EXPORT_SYMBOL(lprocfs_write_helper);
+
+int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
+{
+ long decimal_val, frac_val;
+
+ decimal_val = val / mult;
+ seq_printf(m, "%ld", decimal_val);
+ frac_val = val % mult;
+
+ if (frac_val > 0) {
+ frac_val *= 100;
+ frac_val /= mult;
+ }
+ if (frac_val > 0) {
+ /* Three cases: x0, xx, 0x */
+ if ((frac_val % 10) != 0)
+ seq_printf(m, ".%ld", frac_val);
+ else
+ seq_printf(m, ".%ld", frac_val / 10);
+ }
+
+ seq_printf(m, "\n");
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
+
+int lprocfs_write_u64_helper(const char __user *buffer, unsigned long count,
+ __u64 *val)
+{
+ return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
+}
+EXPORT_SYMBOL(lprocfs_write_u64_helper);
+
+int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
+ __u64 *val, int mult)
+{
+ char kernbuf[22], *end, *pbuf;
+ __u64 whole, frac = 0, units;
+ unsigned frac_d = 1;
+ int sign = 1;
+
+ if (count > (sizeof(kernbuf) - 1))
+ return -EINVAL;
+
+ if (copy_from_user(kernbuf, buffer, count))
+ return -EFAULT;
+
+ kernbuf[count] = '\0';
+ pbuf = kernbuf;
+ if (*pbuf == '-') {
+ sign = -1;
+ pbuf++;
+ }
+
+ whole = simple_strtoull(pbuf, &end, 10);
+ if (pbuf == end)
+ return -EINVAL;
+
+ if (*end == '.') {
+ int i;
+ pbuf = end + 1;
+
+ /* need to limit frac_d to a __u32 */
+ if (strlen(pbuf) > 10)
+ pbuf[10] = '\0';
+
+ frac = simple_strtoull(pbuf, &end, 10);
+ /* count decimal places */
+ for (i = 0; i < (end - pbuf); i++)
+ frac_d *= 10;
+ }
+
+ units = 1;
+ switch (tolower(*end)) {
+ case 'p':
+ units <<= 10;
+ case 't':
+ units <<= 10;
+ case 'g':
+ units <<= 10;
+ case 'm':
+ units <<= 10;
+ case 'k':
+ units <<= 10;
+ }
+ /* Specified units override the multiplier */
+ if (units > 1)
+ mult = units;
+
+ frac *= mult;
+ do_div(frac, frac_d);
+ *val = sign * (whole * mult + frac);
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
+
+static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
+{
+ size_t l2;
+
+ l2 = strlen(s2);
+ if (!l2)
+ return (char *)s1;
+ while (len >= l2) {
+ len--;
+ if (!memcmp(s1, s2, l2))
+ return (char *)s1;
+ s1++;
+ }
+ return NULL;
+}
+
+/**
+ * Find the string \a name in the input \a buffer, and return a pointer to the
+ * value immediately following \a name, reducing \a count appropriately.
+ * If \a name is not found the original \a buffer is returned.
+ */
+char *lprocfs_find_named_value(const char *buffer, const char *name,
+ size_t *count)
+{
+ char *val;
+ size_t buflen = *count;
+
+ /* there is no strnstr() in rhel5 and ubuntu kernels */
+ val = lprocfs_strnstr(buffer, name, buflen);
+ if (val == NULL)
+ return (char *)buffer;
+
+ val += strlen(name); /* skip prefix */
+ while (val < buffer + buflen && isspace(*val)) /* skip separator */
+ val++;
+
+ *count = 0;
+ while (val < buffer + buflen && isalnum(*val)) {
+ ++*count;
+ ++val;
+ }
+
+ return val - *count;
+}
+EXPORT_SYMBOL(lprocfs_find_named_value);
+
+int lprocfs_seq_create(struct proc_dir_entry *parent,
+ const char *name,
+ umode_t mode,
+ const struct file_operations *seq_fops,
+ void *data)
+{
+ struct proc_dir_entry *entry;
+
+ /* Disallow secretly (un)writable entries. */
+ LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
+ entry = proc_create_data(name, mode, parent, seq_fops, data);
+
+ if (entry == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_seq_create);
+
+int lprocfs_obd_seq_create(struct obd_device *dev,
+ const char *name,
+ umode_t mode,
+ const struct file_operations *seq_fops,
+ void *data)
+{
+ return lprocfs_seq_create(dev->obd_proc_entry, name,
+ mode, seq_fops, data);
+}
+EXPORT_SYMBOL(lprocfs_obd_seq_create);
+
+void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
+{
+ if (value >= OBD_HIST_MAX)
+ value = OBD_HIST_MAX - 1;
+
+ spin_lock(&oh->oh_lock);
+ oh->oh_buckets[value]++;
+ spin_unlock(&oh->oh_lock);
+}
+EXPORT_SYMBOL(lprocfs_oh_tally);
+
+void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
+{
+ unsigned int val;
+
+ for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
+ ;
+
+ lprocfs_oh_tally(oh, val);
+}
+EXPORT_SYMBOL(lprocfs_oh_tally_log2);
+
+unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
+{
+ unsigned long ret = 0;
+ int i;
+
+ for (i = 0; i < OBD_HIST_MAX; i++)
+ ret += oh->oh_buckets[i];
+ return ret;
+}
+EXPORT_SYMBOL(lprocfs_oh_sum);
+
+void lprocfs_oh_clear(struct obd_histogram *oh)
+{
+ spin_lock(&oh->oh_lock);
+ memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
+ spin_unlock(&oh->oh_lock);
+}
+EXPORT_SYMBOL(lprocfs_oh_clear);
+
+int lprocfs_obd_rd_max_pages_per_rpc(struct seq_file *m, void *data)
+{
+ struct obd_device *dev = data;
+ struct client_obd *cli = &dev->u.cli;
+
+ client_obd_list_lock(&cli->cl_loi_list_lock);
+ seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
+ client_obd_list_unlock(&cli->cl_loi_list_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);
+
+#endif
Code Review / kvmfornfv.git / blobdiff