diff options
Diffstat (limited to 'fs/dlm/debug_fs.c')
| -rw-r--r-- | fs/dlm/debug_fs.c | 103 |
1 files changed, 96 insertions, 7 deletions
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index 1c9b08095f98..b969deef9ebb 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -344,6 +344,45 @@ static int print_format3(struct dlm_rsb *r, struct seq_file *s) return rv; } +static int print_format4(struct dlm_rsb *r, struct seq_file *s) +{ + int our_nodeid = dlm_our_nodeid(); + int print_name = 1; + int i, rv; + + lock_rsb(r); + + rv = seq_printf(s, "rsb %p %d %d %d %d %lu %lx %d ", + r, + r->res_nodeid, + r->res_master_nodeid, + r->res_dir_nodeid, + our_nodeid, + r->res_toss_time, + r->res_flags, + r->res_length); + if (rv) + goto out; + + for (i = 0; i < r->res_length; i++) { + if (!isascii(r->res_name[i]) || !isprint(r->res_name[i])) + print_name = 0; + } + + seq_printf(s, "%s", print_name ? "str " : "hex"); + + for (i = 0; i < r->res_length; i++) { + if (print_name) + seq_printf(s, "%c", r->res_name[i]); + else + seq_printf(s, " %02x", (unsigned char)r->res_name[i]); + } + rv = seq_printf(s, "\n"); + out: + unlock_rsb(r); + return rv; +} + struct rsbtbl_iter { struct dlm_rsb *rsb; unsigned bucket; @@ -382,6 +421,13 @@ static int table_seq_show(struct seq_file *seq, void *iter_ptr) } rv = print_format3(ri->rsb, seq); break; + case 4: + if (ri->header) { + seq_printf(seq, "version 4 rsb 2\n"); + ri->header = 0; + } + rv = print_format4(ri->rsb, seq); + break; } return rv; @@ -390,15 +436,18 @@ static int table_seq_show(struct seq_file *seq, void *iter_ptr) static const struct seq_operations format1_seq_ops; static const struct seq_operations format2_seq_ops; static const struct seq_operations format3_seq_ops; +static const struct seq_operations format4_seq_ops; static void *table_seq_start(struct seq_file *seq, loff_t *pos) { + struct rb_root *tree; struct rb_node *node; struct dlm_ls *ls = seq->private; struct rsbtbl_iter *ri; struct dlm_rsb *r; loff_t n = *pos; unsigned bucket, entry; + int toss = (seq->op == &format4_seq_ops); bucket = n >> 32; entry = n & ((1LL << 32) - 1); @@ -417,11 +466,14 @@ static void *table_seq_start(struct seq_file *seq, loff_t *pos) ri->format = 2; if (seq->op == &format3_seq_ops) ri->format = 3; + if (seq->op == &format4_seq_ops) + ri->format = 4; + + tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep; spin_lock(&ls->ls_rsbtbl[bucket].lock); - if (!RB_EMPTY_ROOT(&ls->ls_rsbtbl[bucket].keep)) { - for (node = rb_first(&ls->ls_rsbtbl[bucket].keep); node; - node = rb_next(node)) { + if (!RB_EMPTY_ROOT(tree)) { + for (node = rb_first(tree); node; node = rb_next(node)) { r = rb_entry(node, struct dlm_rsb, res_hashnode); if (!entry--) { dlm_hold_rsb(r); @@ -449,10 +501,11 @@ static void *table_seq_start(struct seq_file *seq, loff_t *pos) kfree(ri); return NULL; } + tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep; spin_lock(&ls->ls_rsbtbl[bucket].lock); - if (!RB_EMPTY_ROOT(&ls->ls_rsbtbl[bucket].keep)) { - node = rb_first(&ls->ls_rsbtbl[bucket].keep); + if (!RB_EMPTY_ROOT(tree)) { + node = rb_first(tree); r = rb_entry(node, struct dlm_rsb, res_hashnode); dlm_hold_rsb(r); ri->rsb = r; @@ -469,10 +522,12 @@ static void *table_seq_next(struct seq_file *seq, void *iter_ptr, loff_t *pos) { struct dlm_ls *ls = seq->private; struct rsbtbl_iter *ri = iter_ptr; + struct rb_root *tree; struct rb_node *next; struct dlm_rsb *r, *rp; loff_t n = *pos; unsigned bucket; + int toss = (seq->op == &format4_seq_ops); bucket = n >> 32; @@ -511,10 +566,11 @@ static void *table_seq_next(struct seq_file *seq, void *iter_ptr, loff_t *pos) kfree(ri); return NULL; } + tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep; spin_lock(&ls->ls_rsbtbl[bucket].lock); - if (!RB_EMPTY_ROOT(&ls->ls_rsbtbl[bucket].keep)) { - next = rb_first(&ls->ls_rsbtbl[bucket].keep); + if (!RB_EMPTY_ROOT(tree)) { + next = rb_first(tree); r = rb_entry(next, struct dlm_rsb, res_hashnode); dlm_hold_rsb(r); ri->rsb = r; @@ -558,9 +614,17 @@ static const struct seq_operations format3_seq_ops = { .show = table_seq_show, }; +static const struct seq_operations format4_seq_ops = { + .start = table_seq_start, + .next = table_seq_next, + .stop = table_seq_stop, + .show = table_seq_show, +}; + static const struct file_operations format1_fops; static const struct file_operations format2_fops; static const struct file_operations format3_fops; +static const struct file_operations format4_fops; static int table_open(struct inode *inode, struct file *file) { @@ -573,6 +637,8 @@ static int table_open(struct inode *inode, struct file *file) ret = seq_open(file, &format2_seq_ops); else if (file->f_op == &format3_fops) ret = seq_open(file, &format3_seq_ops); + else if (file->f_op == &format4_fops) + ret = seq_open(file, &format4_seq_ops); if (ret) return ret; @@ -606,6 +672,14 @@ static const struct file_operations format3_fops = { .release = seq_release }; +static const struct file_operations format4_fops = { + .owner = THIS_MODULE, + .open = table_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release +}; + /* * dump lkb's on the ls_waiters list */ @@ -652,6 +726,8 @@ void dlm_delete_debug_file(struct dlm_ls *ls) debugfs_remove(ls->ls_debug_locks_dentry); if (ls->ls_debug_all_dentry) debugfs_remove(ls->ls_debug_all_dentry); + if (ls->ls_debug_toss_dentry) + debugfs_remove(ls->ls_debug_toss_dentry); } int dlm_create_debug_file(struct dlm_ls *ls) @@ -694,6 +770,19 @@ int dlm_create_debug_file(struct dlm_ls *ls) if (!ls->ls_debug_all_dentry) goto fail; + /* format 4 */ + + memset(name, 0, sizeof(name)); + snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_toss", ls->ls_name); + + ls->ls_debug_toss_dentry = debugfs_create_file(name, + S_IFREG | S_IRUGO, + dlm_root, + ls, + &format4_fops); + if (!ls->ls_debug_toss_dentry) + goto fail; + memset(name, 0, sizeof(name)); snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_waiters", ls->ls_name); |