diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/lprocfs_status.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/obdclass/lprocfs_status.c | 1985 |
1 files changed, 1985 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c b/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c new file mode 100644 index 000000000000..3b157f89c300 --- /dev/null +++ b/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c @@ -0,0 +1,1985 @@ +/* + * 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 <obd_class.h> +#include <lprocfs_status.h> +#include <lustre/lustre_idl.h> +#include <linux/seq_file.h> + +#if defined(LPROCFS) + +static int lprocfs_no_percpu_stats = 0; +CFS_MODULE_PARM(lprocfs_no_percpu_stats, "i", int, 0644, + "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 */ + +proc_dir_entry_t *lprocfs_add_simple(struct proc_dir_entry *root, + char *name, void *data, + struct file_operations *fops) +{ + proc_dir_entry_t *proc; + mode_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; + mode_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 *newchild; + + newchild = proc_mkdir(name, parent); + if (newchild != NULL && list != NULL) { + int rc = lprocfs_add_vars(newchild, list, data); + if (rc) { + lprocfs_remove(&newchild); + return ERR_PTR(rc); + } + } + return newchild; +} +EXPORT_SYMBOL(lprocfs_register); + +/* Generic callbacks */ +int lprocfs_rd_uint(struct seq_file *m, void *data) +{ + return seq_printf(m, "%u\n", *(unsigned int *)data); +} +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) +{ + return seq_printf(m, LPU64"\n", *(__u64 *)data); +} +EXPORT_SYMBOL(lprocfs_rd_u64); + +int lprocfs_rd_atomic(struct seq_file *m, void *data) +{ + atomic_t *atom = data; + LASSERT(atom != NULL); + return seq_printf(m, "%d\n", atomic_read(atom)); +} +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); + return seq_printf(m, "%s\n", obd->obd_uuid.uuid); +} +EXPORT_SYMBOL(lprocfs_rd_uuid); + +int lprocfs_rd_name(struct seq_file *m, void *data) +{ + struct obd_device *dev = data; + + LASSERT(dev != NULL); + return seq_printf(m, "%s\n", dev->obd_name); +} +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) + 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; + + rc = seq_printf(m, LPU64"\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; + + rc = seq_printf(m, LPU64"\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; + + rc = seq_printf(m, LPU64"\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) + rc = seq_printf(m, LPU64"\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) + rc = seq_printf(m, LPU64"\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; + int rc = 0; + + LASSERT(obd != NULL); + LPROCFS_CLIMP_CHECK(obd); + imp = obd->u.cli.cl_import; + imp_state_name = ptlrpc_import_state_name(imp->imp_state); + rc = seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name, + imp->imp_deactive ? "\tDEACTIVATED" : ""); + + LPROCFS_CLIMP_EXIT(obd); + return rc; +} +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; + int rc = 0; + + LASSERT(obd != NULL); + + LPROCFS_CLIMP_CHECK(obd); + conn = obd->u.cli.cl_import->imp_connection; + if (conn && obd->u.cli.cl_import) + rc = seq_printf(m, "%s\n", conn->c_remote_uuid.uuid); + else + rc = seq_printf(m, "%s\n", "<none>"); + + LPROCFS_CLIMP_EXIT(obd); + return rc; +} +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; + struct lprocfs_counter_header *cntr_header; + 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; + cntr_header = &stats->ls_cnt_header[idx]; + 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 const char *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", + "unknown", + NULL +}; + +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 "LPX64, + first ? sep : "", flags & ~(mask - 1)); +} + +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 "LPX64, + ret ? sep : "", flags & ~(mask - 1)); + return ret; +} +EXPORT_SYMBOL(obd_connect_flags2str); + +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: "LPU64" %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: "LPU64"\n" + " peer_committed: "LPU64"\n" + " last_checked: "LPU64"\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: "LPU64"\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: "LPU64"\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 = cfs_time_current_sec(); + + /* 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="LPX64"\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); + return seq_printf(m, "%u\n", obd->obd_num_exports); +} +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); + return seq_printf(m, "%d\n", class->typ_refcnt); +} +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) +{ + cfs_hash_t *hash = obd->obd_nid_stats_hash; + struct nid_stat *stat; + ENTRY; + + /* 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); + } + EXIT; +} +EXPORT_SYMBOL(lprocfs_free_per_client_stats); + +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; + struct lprocfs_counter_header *header; + 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++) { + header = &stats->ls_cnt_header[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; + int rc = 0; + + if (idx == 0) { + struct timeval now; + do_gettimeofday(&now); + rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n", + "snapshot_time", now.tv_sec, now.tv_usec); + if (rc < 0) + return rc; + } + hdr = &stats->ls_cnt_header[idx]; + lprocfs_stats_collect(stats, idx, &ctr); + + if (ctr.lc_count == 0) + goto out; + + rc = seq_printf(p, "%-25s "LPD64" samples [%s]", hdr->lc_name, + ctr.lc_count, hdr->lc_units); + + if (rc < 0) + goto out; + + if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ctr.lc_count > 0)) { + rc = seq_printf(p, " "LPD64" "LPD64" "LPD64, + ctr.lc_min, ctr.lc_max, ctr.lc_sum); + if (rc < 0) + goto out; + if (hdr->lc_config & LPROCFS_CNTR_STDDEV) + rc = seq_printf(p, " "LPD64, ctr.lc_sumsquare); + if (rc < 0) + goto out; + } + rc = seq_printf(p, "\n"); +out: + return (rc < 0) ? rc : 0; +} + +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, precreate); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, create); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, create_async); + 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, brw); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, merge_lvb); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, sync); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, migrate); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, copy); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, iterate); + 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, enqueue); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused); + 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, extent_calc); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin); + LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin); + 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, ping); + 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(cfs_hash_t *hs, cfs_hash_bd_t *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(cfs_hash_t *hs, cfs_hash_bd_t *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, 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) +{ + return seq_printf(m, "%s\n", + "Write into this file to clear all nid stats and " + "stale nid entries"); +} +EXPORT_SYMBOL(lprocfs_nid_stats_clear_read); + +static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data) +{ + struct nid_stat *stat = obj; + ENTRY; + + 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; + proc_dir_entry_t *entry; + char *buffer = NULL; + int rc = 0; + ENTRY; + + *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; + GOTO(destroy_new, rc = -EALREADY); + } + /* not found - create */ + OBD_ALLOC(buffer, LNET_NIDSTR_SIZE); + if (buffer == NULL) + GOTO(destroy_new, rc = -ENOMEM); + + 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 (new_stat->nid_proc == NULL) { + CERROR("Error making export directory for nid %s\n", + libcfs_nid2str(*nid)); + GOTO(destroy_new_ns, rc = -ENOMEM); + } + + 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, rc); + } + + 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, rc); + } + + 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); + +int lprocfs_write_helper(const char *buffer, unsigned long count, + int *val) +{ + return lprocfs_write_frac_helper(buffer, count, val, 1); +} +EXPORT_SYMBOL(lprocfs_write_helper); + +int lprocfs_write_frac_helper(const char *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); + +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_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 *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; + + 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++; + } + + whole = simple_strtoull(pbuf, &end, 10); + if (pbuf == end) + return -EINVAL; + + if (end != NULL && *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(*end) { + case 'p': case 'P': + units <<= 10; + case 't': case 'T': + units <<= 10; + case 'g': case 'G': + units <<= 10; + case 'm': case 'M': + units <<= 10; + case 'k': case 'K': + units <<= 10; + } + /* Specified units override the multiplier */ + if (units) + mult = mult < 0 ? -units : units; + + frac *= mult; + do_div(frac, frac_d); + *val = 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, + unsigned long *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(proc_dir_entry_t *parent, + const char *name, + mode_t mode, + const struct file_operations *seq_fops, + void *data) +{ + struct proc_dir_entry *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, + mode_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; + int rc; + + client_obd_list_lock(&cli->cl_loi_list_lock); + rc = seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc); + client_obd_list_unlock(&cli->cl_loi_list_lock); + return rc; +} +EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc); + +#endif /* LPROCFS*/ |