diff options
| author | Li Zefan | 2009-08-17 13:40:17 +0800 |
|---|---|---|
| committer | Ingo Molnar | 2009-08-17 09:54:40 +0200 |
| commit | 8109e1de8502421f9efff1359f2779b1adcc0724 (patch) | |
| tree | 6d5dde3cc239370b6910c3e4004916531e0e5a91 /kernel/lockdep_proc.c | |
| parent | e9d65725bdf5954283625ca4d770bfc34f2ae56a (diff) | |
lockdep: Simplify lockdep seqfile code
Use seq_list_start_head() and seq_list_next().
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <4A88ED41.5000000@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep_proc.c')
| -rw-r--r-- | kernel/lockdep_proc.c | 46 |
1 files changed, 5 insertions, 41 deletions
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c index 9a7996e371f5..05fb5fde9b17 100644 --- a/kernel/lockdep_proc.c +++ b/kernel/lockdep_proc.c @@ -25,38 +25,12 @@ static void *l_next(struct seq_file *m, void *v, loff_t *pos) { - struct lock_class *class; - - (*pos)++; - - if (v == SEQ_START_TOKEN) - class = m->private; - else { - class = v; - - if (class->lock_entry.next != &all_lock_classes) - class = list_entry(class->lock_entry.next, - struct lock_class, lock_entry); - else - class = NULL; - } - - return class; + return seq_list_next(v, &all_lock_classes, pos); } static void *l_start(struct seq_file *m, loff_t *pos) { - struct lock_class *class; - loff_t i = 0; - - if (*pos == 0) - return SEQ_START_TOKEN; - - list_for_each_entry(class, &all_lock_classes, lock_entry) { - if (++i == *pos) - return class; - } - return NULL; + return seq_list_start_head(&all_lock_classes, *pos); } static void l_stop(struct seq_file *m, void *v) @@ -82,11 +56,11 @@ static void print_name(struct seq_file *m, struct lock_class *class) static int l_show(struct seq_file *m, void *v) { - struct lock_class *class = v; + struct lock_class *class = list_entry(v, struct lock_class, lock_entry); struct lock_list *entry; char usage[LOCK_USAGE_CHARS]; - if (v == SEQ_START_TOKEN) { + if (v == &all_lock_classes) { seq_printf(m, "all lock classes:\n"); return 0; } @@ -128,17 +102,7 @@ static const struct seq_operations lockdep_ops = { static int lockdep_open(struct inode *inode, struct file *file) { - int res = seq_open(file, &lockdep_ops); - if (!res) { - struct seq_file *m = file->private_data; - - if (!list_empty(&all_lock_classes)) - m->private = list_entry(all_lock_classes.next, - struct lock_class, lock_entry); - else - m->private = NULL; - } - return res; + return seq_open(file, &lockdep_ops); } static const struct file_operations proc_lockdep_operations = { |