diff options
Diffstat (limited to 'fs/ocfs2/dlm/dlmdebug.c')
| -rw-r--r-- | fs/ocfs2/dlm/dlmdebug.c | 390 |
1 files changed, 107 insertions, 283 deletions
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index 0e28e242226d..fe4fdd09bae3 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -1,27 +1,10 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * +// SPDX-License-Identifier: GPL-2.0-or-later +/* * dlmdebug.c * * debug functionality for the dlm * * Copyright (C) 2004, 2008 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * 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 for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - * */ #include <linux/types.h> @@ -31,10 +14,11 @@ #include <linux/spinlock.h> #include <linux/debugfs.h> #include <linux/export.h> +#include <linux/string_choices.h> -#include "cluster/heartbeat.h" -#include "cluster/nodemanager.h" -#include "cluster/tcp.h" +#include "../cluster/heartbeat.h" +#include "../cluster/nodemanager.h" +#include "../cluster/tcp.h" #include "dlmapi.h" #include "dlmcommon.h" @@ -42,7 +26,7 @@ #include "dlmdebug.h" #define MLOG_MASK_PREFIX ML_DLM -#include "cluster/masklog.h" +#include "../cluster/masklog.h" static int stringify_lockname(const char *lockname, int locklen, char *buf, int len); @@ -81,7 +65,7 @@ static void __dlm_print_lock(struct dlm_lock *lock) lock->ml.type, lock->ml.convert_type, lock->ml.node, dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), - atomic_read(&lock->lock_refs.refcount), + kref_read(&lock->lock_refs), (list_empty(&lock->ast_list) ? 'y' : 'n'), (lock->ast_pending ? 'y' : 'n'), (list_empty(&lock->bast_list) ? 'y' : 'n'), @@ -96,7 +80,6 @@ static void __dlm_print_lock(struct dlm_lock *lock) void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) { - struct list_head *iter2; struct dlm_lock *lock; char buf[DLM_LOCKID_NAME_MAX]; @@ -107,29 +90,26 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) printk("lockres: %s, owner=%u, state=%u\n", buf, res->owner, res->state); printk(" last used: %lu, refcnt: %u, on purge list: %s\n", - res->last_used, atomic_read(&res->refs.refcount), - list_empty(&res->purge) ? "no" : "yes"); + res->last_used, kref_read(&res->refs), + str_no_yes(list_empty(&res->purge))); printk(" on dirty list: %s, on reco list: %s, " "migrating pending: %s\n", - list_empty(&res->dirty) ? "no" : "yes", - list_empty(&res->recovering) ? "no" : "yes", - res->migration_pending ? "yes" : "no"); + str_no_yes(list_empty(&res->dirty)), + str_no_yes(list_empty(&res->recovering)), + str_yes_no(res->migration_pending)); printk(" inflight locks: %d, asts reserved: %d\n", res->inflight_locks, atomic_read(&res->asts_reserved)); dlm_print_lockres_refmap(res); printk(" granted queue:\n"); - list_for_each(iter2, &res->granted) { - lock = list_entry(iter2, struct dlm_lock, list); + list_for_each_entry(lock, &res->granted, list) { __dlm_print_lock(lock); } printk(" converting queue:\n"); - list_for_each(iter2, &res->converting) { - lock = list_entry(iter2, struct dlm_lock, list); + list_for_each_entry(lock, &res->converting, list) { __dlm_print_lock(lock); } printk(" blocked queue:\n"); - list_for_each(iter2, &res->blocked) { - lock = list_entry(iter2, struct dlm_lock, list); + list_for_each_entry(lock, &res->blocked, list) { __dlm_print_lock(lock); } } @@ -185,59 +165,6 @@ static const char *dlm_errnames[] = { [DLM_MAXSTATS] = "DLM_MAXSTATS", }; -static const char *dlm_errmsgs[] = { - [DLM_NORMAL] = "request in progress", - [DLM_GRANTED] = "request granted", - [DLM_DENIED] = "request denied", - [DLM_DENIED_NOLOCKS] = "request denied, out of system resources", - [DLM_WORKING] = "async request in progress", - [DLM_BLOCKED] = "lock request blocked", - [DLM_BLOCKED_ORPHAN] = "lock request blocked by a orphan lock", - [DLM_DENIED_GRACE_PERIOD] = "topological change in progress", - [DLM_SYSERR] = "system error", - [DLM_NOSUPPORT] = "unsupported", - [DLM_CANCELGRANT] = "can't cancel convert: already granted", - [DLM_IVLOCKID] = "bad lockid", - [DLM_SYNC] = "synchronous request granted", - [DLM_BADTYPE] = "bad resource type", - [DLM_BADRESOURCE] = "bad resource handle", - [DLM_MAXHANDLES] = "no more resource handles", - [DLM_NOCLINFO] = "can't contact cluster manager", - [DLM_NOLOCKMGR] = "can't contact lock manager", - [DLM_NOPURGED] = "can't contact purge daemon", - [DLM_BADARGS] = "bad api args", - [DLM_VOID] = "no status", - [DLM_NOTQUEUED] = "NOQUEUE was specified and request failed", - [DLM_IVBUFLEN] = "invalid resource name length", - [DLM_CVTUNGRANT] = "attempted to convert ungranted lock", - [DLM_BADPARAM] = "invalid lock mode specified", - [DLM_VALNOTVALID] = "value block has been invalidated", - [DLM_REJECTED] = "request rejected, unrecognized client", - [DLM_ABORT] = "blocked lock request cancelled", - [DLM_CANCEL] = "conversion request cancelled", - [DLM_IVRESHANDLE] = "invalid resource handle", - [DLM_DEADLOCK] = "deadlock recovery refused this request", - [DLM_DENIED_NOASTS] = "failed to allocate AST", - [DLM_FORWARD] = "request must wait for primary's response", - [DLM_TIMEOUT] = "timeout value for lock has expired", - [DLM_IVGROUPID] = "invalid group specification", - [DLM_VERS_CONFLICT] = "version conflicts prevent request handling", - [DLM_BAD_DEVICE_PATH] = "Locks device does not exist or path wrong", - [DLM_NO_DEVICE_PERMISSION] = "Client has insufficient perms for device", - [DLM_NO_CONTROL_DEVICE] = "Cannot set options on opened device ", - [DLM_RECOVERING] = "lock resource being recovered", - [DLM_MIGRATING] = "lock resource being migrated", - [DLM_MAXSTATS] = "invalid error number", -}; - -const char *dlm_errmsg(enum dlm_status err) -{ - if (err >= DLM_MAXSTATS || err < 0) - return dlm_errmsgs[DLM_MAXSTATS]; - return dlm_errmsgs[err]; -} -EXPORT_SYMBOL_GPL(dlm_errmsg); - const char *dlm_errname(enum dlm_status err) { if (err >= DLM_MAXSTATS || err < 0) @@ -263,11 +190,11 @@ static int stringify_lockname(const char *lockname, int locklen, char *buf, memcpy((__be64 *)&inode_blkno_be, (char *)&lockname[OCFS2_DENTRY_LOCK_INO_START], sizeof(__be64)); - out += snprintf(buf + out, len - out, "%.*s%08x", + out += scnprintf(buf + out, len - out, "%.*s%08x", OCFS2_DENTRY_LOCK_INO_START - 1, lockname, (unsigned int)be64_to_cpu(inode_blkno_be)); } else - out += snprintf(buf + out, len - out, "%.*s", + out += scnprintf(buf + out, len - out, "%.*s", locklen, lockname); return out; } @@ -279,7 +206,7 @@ static int stringify_nodemap(unsigned long *nodemap, int maxnodes, int i = -1; while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes) - out += snprintf(buf + out, len - out, "%d ", i); + out += scnprintf(buf + out, len - out, "%d ", i); return out; } @@ -297,34 +224,34 @@ static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len) mle_type = "MIG"; out += stringify_lockname(mle->mname, mle->mnamelen, buf + out, len - out); - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "\t%3s\tmas=%3u\tnew=%3u\tevt=%1d\tuse=%1d\tref=%3d\n", mle_type, mle->master, mle->new_master, !list_empty(&mle->hb_events), !!mle->inuse, - atomic_read(&mle->mle_refs.refcount)); + kref_read(&mle->mle_refs)); - out += snprintf(buf + out, len - out, "Maybe="); + out += scnprintf(buf + out, len - out, "Maybe="); out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); - out += snprintf(buf + out, len - out, "Vote="); + out += scnprintf(buf + out, len - out, "Vote="); out += stringify_nodemap(mle->vote_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); - out += snprintf(buf + out, len - out, "Response="); + out += scnprintf(buf + out, len - out, "Response="); out += stringify_nodemap(mle->response_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); - out += snprintf(buf + out, len - out, "Node="); + out += scnprintf(buf + out, len - out, "Node="); out += stringify_nodemap(mle->node_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); return out; } @@ -333,7 +260,7 @@ void dlm_print_one_mle(struct dlm_master_list_entry *mle) { char *buf; - buf = (char *) get_zeroed_page(GFP_NOFS); + buf = (char *) get_zeroed_page(GFP_ATOMIC); if (buf) { dump_mle(mle, buf, PAGE_SIZE - 1); free_page((unsigned long)buf); @@ -342,7 +269,7 @@ void dlm_print_one_mle(struct dlm_master_list_entry *mle) #ifdef CONFIG_DEBUG_FS -static struct dentry *dlm_debugfs_root = NULL; +static struct dentry *dlm_debugfs_root; #define DLM_DEBUGFS_DIR "o2dlm" #define DLM_DEBUGFS_DLM_STATE "dlm_state" @@ -351,26 +278,6 @@ static struct dentry *dlm_debugfs_root = NULL; #define DLM_DEBUGFS_PURGE_LIST "purge_list" /* begin - utils funcs */ -static void dlm_debug_free(struct kref *kref) -{ - struct dlm_debug_ctxt *dc; - - dc = container_of(kref, struct dlm_debug_ctxt, debug_refcnt); - - kfree(dc); -} - -static void dlm_debug_put(struct dlm_debug_ctxt *dc) -{ - if (dc) - kref_put(&dc->debug_refcnt, dlm_debug_free); -} - -static void dlm_debug_get(struct dlm_debug_ctxt *dc) -{ - kref_get(&dc->debug_refcnt); -} - static int debug_release(struct inode *inode, struct file *file) { free_page((unsigned long)file->private_data); @@ -392,7 +299,7 @@ static int debug_purgelist_print(struct dlm_ctxt *dlm, char *buf, int len) int out = 0; unsigned long total = 0; - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Dumping Purgelist for Domain: %s\n", dlm->name); spin_lock(&dlm->spinlock); @@ -404,13 +311,13 @@ static int debug_purgelist_print(struct dlm_ctxt *dlm, char *buf, int len) out += stringify_lockname(res->lockname.name, res->lockname.len, buf + out, len - out); - out += snprintf(buf + out, len - out, "\t%ld\n", + out += scnprintf(buf + out, len - out, "\t%ld\n", (jiffies - res->last_used)/HZ); spin_unlock(&res->spinlock); } spin_unlock(&dlm->spinlock); - out += snprintf(buf + out, len - out, "Total on list: %ld\n", total); + out += scnprintf(buf + out, len - out, "Total on list: %lu\n", total); return out; } @@ -446,19 +353,16 @@ static int debug_mle_print(struct dlm_ctxt *dlm, char *buf, int len) { struct dlm_master_list_entry *mle; struct hlist_head *bucket; - struct hlist_node *list; int i, out = 0; unsigned long total = 0, longest = 0, bucket_count = 0; - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Dumping MLEs for Domain: %s\n", dlm->name); spin_lock(&dlm->master_lock); for (i = 0; i < DLM_HASH_BUCKETS; i++) { bucket = dlm_master_hash(dlm, i); - hlist_for_each(list, bucket) { - mle = hlist_entry(list, struct dlm_master_list_entry, - master_hash_node); + hlist_for_each_entry(mle, bucket, master_hash_node) { ++total; ++bucket_count; if (len - out < 200) @@ -470,8 +374,8 @@ static int debug_mle_print(struct dlm_ctxt *dlm, char *buf, int len) } spin_unlock(&dlm->master_lock); - out += snprintf(buf + out, len - out, - "Total: %ld, Longest: %ld\n", total, longest); + out += scnprintf(buf + out, len - out, + "Total: %lu, Longest: %lu\n", total, longest); return out; } @@ -509,7 +413,7 @@ static int dump_lock(struct dlm_lock *lock, int list_type, char *buf, int len) #define DEBUG_LOCK_VERSION 1 spin_lock(&lock->spinlock); - out = snprintf(buf, len, "LOCK:%d,%d,%d,%d,%d,%d:%lld,%d,%d,%d,%d,%d," + out = scnprintf(buf, len, "LOCK:%d,%d,%d,%d,%d,%d:%lld,%d,%d,%d,%d,%d," "%d,%d,%d,%d\n", DEBUG_LOCK_VERSION, list_type, lock->ml.type, lock->ml.convert_type, @@ -521,7 +425,7 @@ static int dump_lock(struct dlm_lock *lock, int list_type, char *buf, int len) lock->ast_pending, lock->bast_pending, lock->convert_pending, lock->lock_pending, lock->cancel_pending, lock->unlock_pending, - atomic_read(&lock->lock_refs.refcount)); + kref_read(&lock->lock_refs)); spin_unlock(&lock->spinlock); return out; @@ -533,13 +437,13 @@ static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len) int i; int out = 0; - out += snprintf(buf + out, len - out, "NAME:"); + out += scnprintf(buf + out, len - out, "NAME:"); out += stringify_lockname(res->lockname.name, res->lockname.len, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); #define DEBUG_LRES_VERSION 1 - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "LRES:%d,%d,%d,%ld,%d,%d,%d,%d,%d,%d,%d\n", DEBUG_LRES_VERSION, res->owner, res->state, res->last_used, @@ -548,20 +452,20 @@ static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len) !list_empty(&res->recovering), res->inflight_locks, res->migration_pending, atomic_read(&res->asts_reserved), - atomic_read(&res->refs.refcount)); + kref_read(&res->refs)); /* refmap */ - out += snprintf(buf + out, len - out, "RMAP:"); + out += scnprintf(buf + out, len - out, "RMAP:"); out += stringify_nodemap(res->refmap, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); /* lvb */ - out += snprintf(buf + out, len - out, "LVBX:"); + out += scnprintf(buf + out, len - out, "LVBX:"); for (i = 0; i < DLM_LVB_LEN; i++) - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "%02x", (unsigned char)res->lvb[i]); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); /* granted */ list_for_each_entry(lock, &res->granted, list) @@ -575,7 +479,7 @@ static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len) list_for_each_entry(lock, &res->blocked, list) out += dump_lock(lock, 2, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); return out; } @@ -585,7 +489,7 @@ static void *lockres_seq_start(struct seq_file *m, loff_t *pos) struct debug_lockres *dl = m->private; struct dlm_ctxt *dlm = dl->dl_ctxt; struct dlm_lock_resource *oldres = dl->dl_res; - struct dlm_lock_resource *res = NULL; + struct dlm_lock_resource *res = NULL, *iter; struct list_head *track_list; spin_lock(&dlm->track_lock); @@ -600,11 +504,11 @@ static void *lockres_seq_start(struct seq_file *m, loff_t *pos) } } - list_for_each_entry(res, track_list, tracking) { - if (&res->tracking == &dlm->tracking_list) - res = NULL; - else - dlm_lockres_get(res); + list_for_each_entry(iter, track_list, tracking) { + if (&iter->tracking != &dlm->tracking_list) { + dlm_lockres_get(iter); + res = iter; + } break; } spin_unlock(&dlm->track_lock); @@ -654,41 +558,30 @@ static const struct seq_operations debug_lockres_ops = { static int debug_lockres_open(struct inode *inode, struct file *file) { struct dlm_ctxt *dlm = inode->i_private; - int ret = -ENOMEM; - struct seq_file *seq; - struct debug_lockres *dl = NULL; + struct debug_lockres *dl; + void *buf; - dl = kzalloc(sizeof(struct debug_lockres), GFP_KERNEL); - if (!dl) { - mlog_errno(ret); - goto bail; - } - - dl->dl_len = PAGE_SIZE; - dl->dl_buf = kmalloc(dl->dl_len, GFP_KERNEL); - if (!dl->dl_buf) { - mlog_errno(ret); + buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!buf) goto bail; - } - ret = seq_open(file, &debug_lockres_ops); - if (ret) { - mlog_errno(ret); - goto bail; - } + dl = __seq_open_private(file, &debug_lockres_ops, sizeof(*dl)); + if (!dl) + goto bailfree; - seq = file->private_data; - seq->private = dl; + dl->dl_len = PAGE_SIZE; + dl->dl_buf = buf; dlm_grab(dlm); dl->dl_ctxt = dlm; return 0; + +bailfree: + kfree(buf); bail: - if (dl) - kfree(dl->dl_buf); - kfree(dl); - return ret; + mlog_errno(-ENOMEM); + return -ENOMEM; } static int debug_lockres_release(struct inode *inode, struct file *file) @@ -736,41 +629,41 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) } /* Domain: xxxxxxxxxx Key: 0xdfbac769 */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Domain: %s Key: 0x%08x Protocol: %d.%d\n", dlm->name, dlm->key, dlm->dlm_locking_proto.pv_major, dlm->dlm_locking_proto.pv_minor); /* Thread Pid: xxx Node: xxx State: xxxxx */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Thread Pid: %d Node: %d State: %s\n", task_pid_nr(dlm->dlm_thread_task), dlm->node_num, state); /* Number of Joins: xxx Joining Node: xxx */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Number of Joins: %d Joining Node: %d\n", dlm->num_joins, dlm->joining_node); /* Domain Map: xx xx xx */ - out += snprintf(buf + out, len - out, "Domain Map: "); + out += scnprintf(buf + out, len - out, "Domain Map: "); out += stringify_nodemap(dlm->domain_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); /* Exit Domain Map: xx xx xx */ - out += snprintf(buf + out, len - out, "Exit Domain Map: "); + out += scnprintf(buf + out, len - out, "Exit Domain Map: "); out += stringify_nodemap(dlm->exit_domain_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); /* Live Map: xx xx xx */ - out += snprintf(buf + out, len - out, "Live Map: "); + out += scnprintf(buf + out, len - out, "Live Map: "); out += stringify_nodemap(dlm->live_nodes_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); /* Lock Resources: xxx (xxx) */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Lock Resources: %d (%d)\n", atomic_read(&dlm->res_cur_count), atomic_read(&dlm->res_tot_count)); @@ -782,29 +675,29 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) cur_mles += atomic_read(&dlm->mle_cur_count[i]); /* MLEs: xxx (xxx) */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "MLEs: %d (%d)\n", cur_mles, tot_mles); /* Blocking: xxx (xxx) */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, " Blocking: %d (%d)\n", atomic_read(&dlm->mle_cur_count[DLM_MLE_BLOCK]), atomic_read(&dlm->mle_tot_count[DLM_MLE_BLOCK])); /* Mastery: xxx (xxx) */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, " Mastery: %d (%d)\n", atomic_read(&dlm->mle_cur_count[DLM_MLE_MASTER]), atomic_read(&dlm->mle_tot_count[DLM_MLE_MASTER])); /* Migration: xxx (xxx) */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, " Migration: %d (%d)\n", atomic_read(&dlm->mle_cur_count[DLM_MLE_MIGRATION]), atomic_read(&dlm->mle_tot_count[DLM_MLE_MIGRATION])); /* Lists: Dirty=Empty Purge=InUse PendingASTs=Empty ... */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Lists: Dirty=%s Purge=%s PendingASTs=%s " "PendingBASTs=%s\n", (list_empty(&dlm->dirty_list) ? "Empty" : "InUse"), @@ -813,12 +706,12 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) (list_empty(&dlm->pending_basts) ? "Empty" : "InUse")); /* Purge Count: xxx Refs: xxx */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Purge Count: %d Refs: %d\n", dlm->purge_count, - atomic_read(&dlm->dlm_refs.refcount)); + kref_read(&dlm->dlm_refs)); /* Dead Node: xxx */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Dead Node: %d\n", dlm->reco.dead_node); /* What about DLM_RECO_STATE_FINALIZE? */ @@ -828,19 +721,19 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) state = "INACTIVE"; /* Recovery Pid: xxxx Master: xxx State: xxxx */ - out += snprintf(buf + out, len - out, + out += scnprintf(buf + out, len - out, "Recovery Pid: %d Master: %d State: %s\n", task_pid_nr(dlm->dlm_reco_thread_task), dlm->reco.new_master, state); /* Recovery Map: xx xx */ - out += snprintf(buf + out, len - out, "Recovery Map: "); + out += scnprintf(buf + out, len - out, "Recovery Map: "); out += stringify_nodemap(dlm->recovery_map, O2NM_MAX_NODES, buf + out, len - out); - out += snprintf(buf + out, len - out, "\n"); + out += scnprintf(buf + out, len - out, "\n"); /* Recovery Node State: */ - out += snprintf(buf + out, len - out, "Recovery Node State:\n"); + out += scnprintf(buf + out, len - out, "Recovery Node State:\n"); list_for_each_entry(node, &dlm->reco.node_data, list) { switch (node->state) { case DLM_RECO_NODE_DATA_INIT: @@ -868,7 +761,7 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) state = "BAD"; break; } - out += snprintf(buf + out, len - out, "\t%u - %s\n", + out += scnprintf(buf + out, len - out, "\t%u - %s\n", node->node_num, state); } @@ -904,111 +797,42 @@ static const struct file_operations debug_state_fops = { /* end - debug state funcs */ /* files in subroot */ -int dlm_debug_init(struct dlm_ctxt *dlm) +void dlm_debug_init(struct dlm_ctxt *dlm) { - struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt; - /* for dumping dlm_ctxt */ - dc->debug_state_dentry = debugfs_create_file(DLM_DEBUGFS_DLM_STATE, - S_IFREG|S_IRUSR, - dlm->dlm_debugfs_subroot, - dlm, &debug_state_fops); - if (!dc->debug_state_dentry) { - mlog_errno(-ENOMEM); - goto bail; - } + debugfs_create_file(DLM_DEBUGFS_DLM_STATE, S_IFREG|S_IRUSR, + dlm->dlm_debugfs_subroot, dlm, &debug_state_fops); /* for dumping lockres */ - dc->debug_lockres_dentry = - debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE, - S_IFREG|S_IRUSR, - dlm->dlm_debugfs_subroot, - dlm, &debug_lockres_fops); - if (!dc->debug_lockres_dentry) { - mlog_errno(-ENOMEM); - goto bail; - } + debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE, S_IFREG|S_IRUSR, + dlm->dlm_debugfs_subroot, dlm, &debug_lockres_fops); /* for dumping mles */ - dc->debug_mle_dentry = debugfs_create_file(DLM_DEBUGFS_MLE_STATE, - S_IFREG|S_IRUSR, - dlm->dlm_debugfs_subroot, - dlm, &debug_mle_fops); - if (!dc->debug_mle_dentry) { - mlog_errno(-ENOMEM); - goto bail; - } + debugfs_create_file(DLM_DEBUGFS_MLE_STATE, S_IFREG|S_IRUSR, + dlm->dlm_debugfs_subroot, dlm, &debug_mle_fops); /* for dumping lockres on the purge list */ - dc->debug_purgelist_dentry = - debugfs_create_file(DLM_DEBUGFS_PURGE_LIST, - S_IFREG|S_IRUSR, - dlm->dlm_debugfs_subroot, - dlm, &debug_purgelist_fops); - if (!dc->debug_purgelist_dentry) { - mlog_errno(-ENOMEM); - goto bail; - } - - dlm_debug_get(dc); - return 0; - -bail: - dlm_debug_shutdown(dlm); - return -ENOMEM; -} - -void dlm_debug_shutdown(struct dlm_ctxt *dlm) -{ - struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt; - - if (dc) { - debugfs_remove(dc->debug_purgelist_dentry); - debugfs_remove(dc->debug_mle_dentry); - debugfs_remove(dc->debug_lockres_dentry); - debugfs_remove(dc->debug_state_dentry); - dlm_debug_put(dc); - } + debugfs_create_file(DLM_DEBUGFS_PURGE_LIST, S_IFREG|S_IRUSR, + dlm->dlm_debugfs_subroot, dlm, + &debug_purgelist_fops); } /* subroot - domain dir */ -int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm) +void dlm_create_debugfs_subroot(struct dlm_ctxt *dlm) { dlm->dlm_debugfs_subroot = debugfs_create_dir(dlm->name, dlm_debugfs_root); - if (!dlm->dlm_debugfs_subroot) { - mlog_errno(-ENOMEM); - goto bail; - } - - dlm->dlm_debug_ctxt = kzalloc(sizeof(struct dlm_debug_ctxt), - GFP_KERNEL); - if (!dlm->dlm_debug_ctxt) { - mlog_errno(-ENOMEM); - goto bail; - } - kref_init(&dlm->dlm_debug_ctxt->debug_refcnt); - - return 0; -bail: - dlm_destroy_debugfs_subroot(dlm); - return -ENOMEM; } void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm) { - debugfs_remove(dlm->dlm_debugfs_subroot); + debugfs_remove_recursive(dlm->dlm_debugfs_subroot); } /* debugfs root */ -int dlm_create_debugfs_root(void) +void dlm_create_debugfs_root(void) { dlm_debugfs_root = debugfs_create_dir(DLM_DEBUGFS_DIR, NULL); - if (!dlm_debugfs_root) { - mlog_errno(-ENOMEM); - return -ENOMEM; - } - return 0; } void dlm_destroy_debugfs_root(void) |