| /* |
| * 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, 2015, 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", |
| "connect_from_mds", |
| "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]; 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); |
| |
| static void obd_connect_data_seqprint(struct seq_file *m, |
| struct obd_connect_data *ocd) |
| { |
| int flags; |
| |
| LASSERT(ocd); |
| flags = ocd->ocd_connect_flags; |
| |
| seq_printf(m, " connect_data:\n" |
| " flags: %llx\n" |
| " instance: %u\n", |
| ocd->ocd_connect_flags, |
| ocd->ocd_instance); |
| if (flags & OBD_CONNECT_VERSION) |
| seq_printf(m, " target_version: %u.%u.%u.%u\n", |
| OBD_OCD_VERSION_MAJOR(ocd->ocd_version), |
| OBD_OCD_VERSION_MINOR(ocd->ocd_version), |
| OBD_OCD_VERSION_PATCH(ocd->ocd_version), |
| OBD_OCD_VERSION_FIX(ocd->ocd_version)); |
| if (flags & OBD_CONNECT_MDS) |
| seq_printf(m, " mdt_index: %d\n", ocd->ocd_group); |
| if (flags & OBD_CONNECT_GRANT) |
| seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant); |
| if (flags & OBD_CONNECT_INDEX) |
| seq_printf(m, " target_index: %u\n", ocd->ocd_index); |
| if (flags & OBD_CONNECT_BRW_SIZE) |
| seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size); |
| if (flags & OBD_CONNECT_IBITS) |
| seq_printf(m, " ibits_known: %llx\n", |
| ocd->ocd_ibits_known); |
| if (flags & OBD_CONNECT_GRANT_PARAM) |
| seq_printf(m, " grant_block_size: %d\n" |
| " grant_inode_size: %d\n" |
| " grant_extent_overhead: %d\n", |
| ocd->ocd_blocksize, |
| ocd->ocd_inodespace, |
| ocd->ocd_grant_extent); |
| if (flags & OBD_CONNECT_TRANSNO) |
| seq_printf(m, " first_transno: %llx\n", |
| ocd->ocd_transno); |
| if (flags & OBD_CONNECT_CKSUM) |
| seq_printf(m, " cksum_types: %#x\n", |
| ocd->ocd_cksum_types); |
| if (flags & OBD_CONNECT_MAX_EASIZE) |
| seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize); |
| if (flags & OBD_CONNECT_MAXBYTES) |
| seq_printf(m, " max_object_bytes: %llx\n", |
| ocd->ocd_maxbytes); |
| } |
| |
| 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 > /sys/xxx output result : x |
| * 2. #echo x.0x > /sys/xxx output result : x.0x |
| * 3. #echo x.x0 > /sys/xxx output result : x.x |
| * 4. #echo x.xx > /sys/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 && *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); |
| |
| 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 dentry *ldebugfs_add_simple(struct dentry *root, |
| char *name, void *data, |
| struct file_operations *fops) |
| { |
| struct dentry *entry; |
| umode_t mode = 0; |
| |
| if (!root || !name || !fops) |
| return ERR_PTR(-EINVAL); |
| |
| if (fops->read) |
| mode = 0444; |
| if (fops->write) |
| mode |= 0200; |
| entry = debugfs_create_file(name, mode, root, data, fops); |
| if (IS_ERR_OR_NULL(entry)) { |
| CERROR("LprocFS: No memory to create <debugfs> entry %s\n", name); |
| return entry ?: ERR_PTR(-ENOMEM); |
| } |
| return entry; |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_add_simple); |
| |
| static struct file_operations lprocfs_generic_fops = { }; |
| |
| int ldebugfs_add_vars(struct dentry *parent, |
| struct lprocfs_vars *list, |
| void *data) |
| { |
| if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list)) |
| return -EINVAL; |
| |
| while (list->name) { |
| struct dentry *entry; |
| 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; |
| } |
| entry = debugfs_create_file(list->name, mode, parent, |
| list->data ?: data, |
| list->fops ?: &lprocfs_generic_fops |
| ); |
| if (IS_ERR_OR_NULL(entry)) |
| return entry ? PTR_ERR(entry) : -ENOMEM; |
| list++; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_add_vars); |
| |
| void ldebugfs_remove(struct dentry **entryp) |
| { |
| debugfs_remove_recursive(*entryp); |
| *entryp = NULL; |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_remove); |
| |
| struct dentry *ldebugfs_register(const char *name, |
| struct dentry *parent, |
| struct lprocfs_vars *list, void *data) |
| { |
| struct dentry *entry; |
| |
| entry = debugfs_create_dir(name, parent); |
| if (IS_ERR_OR_NULL(entry)) { |
| entry = entry ?: ERR_PTR(-ENOMEM); |
| goto out; |
| } |
| |
| if (!IS_ERR_OR_NULL(list)) { |
| int rc; |
| |
| rc = ldebugfs_add_vars(entry, list, data); |
| if (rc != 0) { |
| debugfs_remove(entry); |
| entry = ERR_PTR(rc); |
| } |
| } |
| out: |
| return entry; |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_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); |
| |
| static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| |
| return sprintf(buf, "%s\n", obd->obd_uuid.uuid); |
| } |
| LUSTRE_RO_ATTR(uuid); |
| |
| static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| 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) |
| return sprintf(buf, "%u\n", osfs.os_bsize); |
| |
| return rc; |
| } |
| LUSTRE_RO_ATTR(blocksize); |
| |
| static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| 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; |
| |
| return sprintf(buf, "%llu\n", result); |
| } |
| |
| return rc; |
| } |
| LUSTRE_RO_ATTR(kbytestotal); |
| |
| static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| 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; |
| |
| return sprintf(buf, "%llu\n", result); |
| } |
| |
| return rc; |
| } |
| LUSTRE_RO_ATTR(kbytesfree); |
| |
| static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| 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; |
| |
| return sprintf(buf, "%llu\n", result); |
| } |
| |
| return rc; |
| } |
| LUSTRE_RO_ATTR(kbytesavail); |
| |
| static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| 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) |
| return sprintf(buf, "%llu\n", osfs.os_files); |
| |
| return rc; |
| } |
| LUSTRE_RO_ATTR(filestotal); |
| |
| static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| 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) |
| return sprintf(buf, "%llu\n", osfs.os_ffree); |
| |
| return rc; |
| } |
| LUSTRE_RO_ATTR(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; |
| |
| LASSERT(obd); |
| rc = lprocfs_climp_check(obd); |
| if (rc) |
| return rc; |
| |
| 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" : ""); |
| |
| up_read(&obd->u.cli.cl_sem); |
| |
| 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; |
| int rc; |
| |
| LASSERT(obd); |
| |
| rc = lprocfs_climp_check(obd); |
| if (rc) |
| return rc; |
| |
| 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"); |
| |
| up_read(&obd->u.cli.cl_sem); |
| |
| 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) { |
| /* 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]) |
| 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]; 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) |
| { |
| char nidstr[LNET_NIDSTR_SIZE]; |
| struct lprocfs_counter ret; |
| struct lprocfs_counter_header *header; |
| struct obd_device *obd = data; |
| struct obd_import *imp; |
| struct obd_import_conn *conn; |
| struct obd_connect_data *ocd; |
| int j; |
| int k; |
| int rw = 0; |
| int rc; |
| |
| LASSERT(obd); |
| rc = lprocfs_climp_check(obd); |
| if (rc) |
| return rc; |
| |
| imp = obd->u.cli.cl_import; |
| ocd = &imp->imp_connect_data; |
| |
| 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"); |
| obd_connect_data_seqprint(m, ocd); |
| seq_printf(m, " 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) { |
| libcfs_nid2str_r(conn->oic_conn->c_peer.nid, |
| nidstr, sizeof(nidstr)); |
| seq_printf(m, "%s%s", j ? ", " : "", nidstr); |
| j++; |
| } |
| if (imp->imp_connection) |
| libcfs_nid2str_r(imp->imp_connection->c_peer.nid, |
| nidstr, sizeof(nidstr)); |
| else |
| strncpy(nidstr, "<none>", sizeof(nidstr)); |
| seq_printf(m, |
| " ]\n" |
| " current_connection: %s\n" |
| " connection_attempts: %u\n" |
| " generation: %u\n" |
| " in-progress_invalidations: %u\n", |
| nidstr, |
| imp->imp_conn_cnt, |
| imp->imp_generation, |
| atomic_read(&imp->imp_inval_count)); |
| spin_unlock(&imp->imp_lock); |
| |
| if (!obd->obd_svc_stats) |
| 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: |
| up_read(&obd->u.cli.cl_sem); |
| return 0; |
| } |
| EXPORT_SYMBOL(lprocfs_rd_import); |
| |
| int lprocfs_rd_state(struct seq_file *m, void *data) |
| { |
| struct obd_device *obd = data; |
| struct obd_import *imp; |
| int j, k, rc; |
| |
| LASSERT(obd); |
| rc = lprocfs_climp_check(obd); |
| if (rc) |
| return rc; |
| |
| 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, " - [ %lld, %s ]\n", (s64)ish->ish_time, |
| ptlrpc_import_state_name(ish->ish_state)); |
| } |
| |
| up_read(&obd->u.cli.cl_sem); |
| 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 = data; |
| struct obd_import *imp; |
| unsigned int cur, worst; |
| time64_t now, worstt; |
| struct dhms ts; |
| int i, rc; |
| |
| LASSERT(obd); |
| rc = lprocfs_climp_check(obd); |
| if (rc) |
| return rc; |
| |
| imp = obd->u.cli.cl_import; |
| |
| now = ktime_get_real_seconds(); |
| |
| /* Some network health info for kicks */ |
| s2dhms(&ts, now - imp->imp_last_reply_time); |
| seq_printf(m, "%-10s : %lld, " DHMS_FMT " ago\n", |
| "last reply", (s64)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 %lld, " DHMS_FMT " ago) ", |
| "network", cur, worst, (s64)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 %lld, " |
| DHMS_FMT " ago) ", imp->imp_at.iat_portal[i], |
| cur, worst, (s64)worstt, DHMS_VARS(&ts)); |
| lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]); |
| } |
| |
| up_read(&obd->u.cli.cl_sem); |
| 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; |
| int rc; |
| |
| rc = lprocfs_climp_check(obd); |
| if (rc) |
| return rc; |
| |
| 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"); |
| up_read(&obd->u.cli.cl_sem); |
| return 0; |
| } |
| EXPORT_SYMBOL(lprocfs_rd_connect_flags); |
| |
| static struct attribute *obd_def_attrs[] = { |
| &lustre_attr_blocksize.attr, |
| &lustre_attr_kbytestotal.attr, |
| &lustre_attr_kbytesfree.attr, |
| &lustre_attr_kbytesavail.attr, |
| &lustre_attr_filestotal.attr, |
| &lustre_attr_filesfree.attr, |
| &lustre_attr_uuid.attr, |
| NULL, |
| }; |
| |
| static void obd_sysfs_release(struct kobject *kobj) |
| { |
| struct obd_device *obd = container_of(kobj, struct obd_device, |
| obd_kobj); |
| |
| complete(&obd->obd_kobj_unregister); |
| } |
| |
| static struct kobj_type obd_ktype = { |
| .default_attrs = obd_def_attrs, |
| .sysfs_ops = &lustre_sysfs_ops, |
| .release = obd_sysfs_release, |
| }; |
| |
| int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list, |
| struct attribute_group *attrs) |
| { |
| int rc = 0; |
| |
| init_completion(&obd->obd_kobj_unregister); |
| rc = kobject_init_and_add(&obd->obd_kobj, &obd_ktype, |
| obd->obd_type->typ_kobj, |
| "%s", obd->obd_name); |
| if (rc) |
| return rc; |
| |
| if (attrs) { |
| rc = sysfs_create_group(&obd->obd_kobj, attrs); |
| if (rc) { |
| kobject_put(&obd->obd_kobj); |
| return rc; |
| } |
| } |
| |
| obd->obd_debugfs_entry = ldebugfs_register(obd->obd_name, |
| obd->obd_type->typ_debugfs_entry, |
| list, obd); |
| if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) { |
| rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry) |
| : -ENOMEM; |
| CERROR("error %d setting up lprocfs for %s\n", |
| rc, obd->obd_name); |
| obd->obd_debugfs_entry = NULL; |
| } |
| |
| return rc; |
| } |
| EXPORT_SYMBOL_GPL(lprocfs_obd_setup); |
| |
| int lprocfs_obd_cleanup(struct obd_device *obd) |
| { |
| if (!obd) |
| return -EINVAL; |
| |
| if (!IS_ERR_OR_NULL(obd->obd_debugfs_entry)) |
| ldebugfs_remove(&obd->obd_debugfs_entry); |
| |
| kobject_put(&obd->obd_kobj); |
| wait_for_completion(&obd->obd_kobj_unregister); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(lprocfs_obd_cleanup); |
| |
| 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]); |
| 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]) { |
| 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) |
| 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) |
| 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]) |
| goto fail; |
| stats->ls_biggest_alloc_num = 1; |
| } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) { |
| /* alloc all percpu data */ |
| 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 || 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]) |
| LIBCFS_FREE(stats->ls_percpu[i], percpusize); |
| if (stats->ls_cnt_header) |
| 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]) |
| 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 timespec64 now; |
| |
| ktime_get_real_ts64(&now); |
| seq_printf(p, "%-25s %llu.%9lu secs.usecs\n", |
| "snapshot_time", |
| (s64)now.tv_sec, (unsigned long)now.tv_nsec); |
| } |
| |
| 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 = inode->i_private; |
| |
| return 0; |
| } |
| |
| static const 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 ldebugfs_register_stats(struct dentry *parent, const char *name, |
| struct lprocfs_stats *stats) |
| { |
| struct dentry *entry; |
| |
| LASSERT(!IS_ERR_OR_NULL(parent)); |
| |
| entry = debugfs_create_file(name, 0644, parent, stats, |
| &lprocfs_stats_seq_fops); |
| if (IS_ERR_OR_NULL(entry)) |
| return entry ? PTR_ERR(entry) : -ENOMEM; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_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; |
| |
| header = &stats->ls_cnt_header[index]; |
| LASSERTF(header, "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]) |
| 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); |
| |
| int lprocfs_exp_cleanup(struct obd_export *exp) |
| { |
| 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 || !header) |
| 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_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 __user *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; |
| if (end) { |
| 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) |
| 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 ldebugfs_seq_create(struct dentry *parent, const char *name, |
| umode_t mode, const struct file_operations *seq_fops, |
| void *data) |
| { |
| struct dentry *entry; |
| |
| /* Disallow secretly (un)writable entries. */ |
| LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0)); |
| |
| entry = debugfs_create_file(name, mode, parent, data, seq_fops); |
| if (IS_ERR_OR_NULL(entry)) |
| return entry ? PTR_ERR(entry) : -ENOMEM; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_seq_create); |
| |
| int ldebugfs_obd_seq_create(struct obd_device *dev, |
| const char *name, |
| umode_t mode, |
| const struct file_operations *seq_fops, |
| void *data) |
| { |
| return ldebugfs_seq_create(dev->obd_debugfs_entry, name, |
| mode, seq_fops, data); |
| } |
| EXPORT_SYMBOL_GPL(ldebugfs_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 = 0; |
| |
| if (likely(value != 0)) |
| val = min(fls(value - 1), OBD_HIST_MAX); |
| |
| 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); |
| |
| static ssize_t lustre_attr_show(struct kobject *kobj, |
| struct attribute *attr, char *buf) |
| { |
| struct lustre_attr *a = container_of(attr, struct lustre_attr, attr); |
| |
| return a->show ? a->show(kobj, attr, buf) : 0; |
| } |
| |
| static ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr, |
| const char *buf, size_t len) |
| { |
| struct lustre_attr *a = container_of(attr, struct lustre_attr, attr); |
| |
| return a->store ? a->store(kobj, attr, buf, len) : len; |
| } |
| |
| const struct sysfs_ops lustre_sysfs_ops = { |
| .show = lustre_attr_show, |
| .store = lustre_attr_store, |
| }; |
| EXPORT_SYMBOL_GPL(lustre_sysfs_ops); |