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authorLi Zefan <lizf@cn.fujitsu.com>2009-08-17 13:40:39 +0800
committerIngo Molnar <mingo@elte.hu>2009-08-17 09:54:41 +0200
commit12aac19d4ba41019a1748f49d3c5d259b1bfb26d (patch)
tree27cdb377eed18aebaed7600b63d2962418b7af95 /kernel/lockdep_proc.c
parent8109e1de8502421f9efff1359f2779b1adcc0724 (diff)
lockdep: Simplify lockdep_chains seqfile code
- make lc_next() call lc_start() - use lock_chains directly instead of storing it in m->private Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4A88ED57.5060609@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/lockdep_proc.c')
-rw-r--r--kernel/lockdep_proc.c37
1 files changed, 7 insertions, 30 deletions
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 05fb5fde9b1..2bbe25f55d0 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -113,26 +113,6 @@ static const struct file_operations proc_lockdep_operations = {
};
#ifdef CONFIG_PROVE_LOCKING
-static void *lc_next(struct seq_file *m, void *v, loff_t *pos)
-{
- struct lock_chain *chain;
-
- (*pos)++;
-
- if (v == SEQ_START_TOKEN)
- chain = m->private;
- else {
- chain = v;
-
- if (*pos - 1 < nr_lock_chains)
- chain = lock_chains + (*pos - 1);
- else
- chain = NULL;
- }
-
- return chain;
-}
-
static void *lc_start(struct seq_file *m, loff_t *pos)
{
if (*pos == 0)
@@ -144,6 +124,12 @@ static void *lc_start(struct seq_file *m, loff_t *pos)
return NULL;
}
+static void *lc_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ (*pos)++;
+ return lc_start(m, pos);
+}
+
static void lc_stop(struct seq_file *m, void *v)
{
}
@@ -184,16 +170,7 @@ static const struct seq_operations lockdep_chains_ops = {
static int lockdep_chains_open(struct inode *inode, struct file *file)
{
- int res = seq_open(file, &lockdep_chains_ops);
- if (!res) {
- struct seq_file *m = file->private_data;
-
- if (nr_lock_chains)
- m->private = lock_chains;
- else
- m->private = NULL;
- }
- return res;
+ return seq_open(file, &lockdep_chains_ops);
}
static const struct file_operations proc_lockdep_chains_operations = {