diff options
Diffstat (limited to 'fs/ocfs2/dlm/dlmdebug.c')
| -rw-r--r-- | fs/ocfs2/dlm/dlmdebug.c | 154 |
1 files changed, 82 insertions, 72 deletions
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index a109005f70da..58e45795a6c6 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -268,11 +268,6 @@ const char *dlm_errname(enum dlm_status err) } EXPORT_SYMBOL_GPL(dlm_errname); - -#ifdef CONFIG_DEBUG_FS - -static struct dentry *dlm_debugfs_root = NULL; - /* NOTE: This function converts a lockname into a string. It uses knowledge * of the format of the lockname that should be outside the purview of the dlm. * We are adding only to make dlm debugging slightly easier. @@ -299,6 +294,88 @@ static int stringify_lockname(const char *lockname, int locklen, return out; } +static int stringify_nodemap(unsigned long *nodemap, int maxnodes, + char *buf, int len) +{ + int out = 0; + int i = -1; + + while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes) + out += snprintf(buf + out, len - out, "%d ", i); + + return out; +} + +static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len) +{ + int out = 0; + unsigned int namelen; + const char *name; + char *mle_type; + + if (mle->type != DLM_MLE_MASTER) { + namelen = mle->u.name.len; + name = mle->u.name.name; + } else { + namelen = mle->u.res->lockname.len; + name = mle->u.res->lockname.name; + } + + if (mle->type == DLM_MLE_BLOCK) + mle_type = "BLK"; + else if (mle->type == DLM_MLE_MASTER) + mle_type = "MAS"; + else + mle_type = "MIG"; + + out += stringify_lockname(name, namelen, buf + out, len - out); + out += snprintf(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)); + + out += snprintf(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 += snprintf(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 += snprintf(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 += snprintf(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 += snprintf(buf + out, len - out, "\n"); + + return out; +} + +void dlm_print_one_mle(struct dlm_master_list_entry *mle) +{ + char *buf; + + buf = (char *) get_zeroed_page(GFP_NOFS); + if (buf) { + dump_mle(mle, buf, PAGE_SIZE - 1); + free_page((unsigned long)buf); + } +} + +#ifdef CONFIG_DEBUG_FS + +static struct dentry *dlm_debugfs_root = NULL; + #define DLM_DEBUGFS_DIR "o2dlm" #define DLM_DEBUGFS_DLM_STATE "dlm_state" #define DLM_DEBUGFS_LOCKING_STATE "locking_state" @@ -326,18 +403,6 @@ static void dlm_debug_get(struct dlm_debug_ctxt *dc) kref_get(&dc->debug_refcnt); } -static int stringify_nodemap(unsigned long *nodemap, int maxnodes, - char *buf, int len) -{ - int out = 0; - int i = -1; - - while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes) - out += snprintf(buf + out, len - out, "%d ", i); - - return out; -} - static struct debug_buffer *debug_buffer_allocate(void) { struct debug_buffer *db = NULL; @@ -455,61 +520,6 @@ static struct file_operations debug_purgelist_fops = { /* end - purge list funcs */ /* begin - debug mle funcs */ -static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len) -{ - int out = 0; - unsigned int namelen; - const char *name; - char *mle_type; - - if (mle->type != DLM_MLE_MASTER) { - namelen = mle->u.name.len; - name = mle->u.name.name; - } else { - namelen = mle->u.res->lockname.len; - name = mle->u.res->lockname.name; - } - - if (mle->type == DLM_MLE_BLOCK) - mle_type = "BLK"; - else if (mle->type == DLM_MLE_MASTER) - mle_type = "MAS"; - else - mle_type = "MIG"; - - out += stringify_lockname(name, namelen, buf + out, len - out); - out += snprintf(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)); - - out += snprintf(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 += snprintf(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 += snprintf(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 += snprintf(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 += snprintf(buf + out, len - out, "\n"); - - return out; -} - static int debug_mle_print(struct dlm_ctxt *dlm, struct debug_buffer *db) { struct dlm_master_list_entry *mle; |