diff options
| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2009-07-06 16:10:18 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-07-10 12:14:05 +0200 |
| commit | d8ea37d5de58d35a39d0b4e7d209751aaa1b8174 (patch) | |
| tree | a64ffb2c844ad0f0e99616a69e6f548370d31665 /kernel | |
| parent | 80098c200e2ee3b4c86a9d1e156dbcd05380e08f (diff) | |
tracing/stat: Add stat_release() callback
Add stat_release() callback to struct tracer_stat, so a stat tracer
can release it's entries after the stat file has been read out.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4A51B16A.6020708@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_stat.c | 7 | ||||
| -rw-r--r-- | kernel/trace/trace_stat.h | 2 |
2 files changed, 7 insertions, 2 deletions
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c index e66f5e49334..f069461f10b 100644 --- a/kernel/trace/trace_stat.c +++ b/kernel/trace/trace_stat.c @@ -49,7 +49,8 @@ static struct dentry *stat_dir; * but it will at least advance closer to the next one * to be released. */ -static struct rb_node *release_next(struct rb_node *node) +static struct rb_node *release_next(struct tracer_stat *ts, + struct rb_node *node) { struct stat_node *snode; struct rb_node *parent = rb_parent(node); @@ -67,6 +68,8 @@ static struct rb_node *release_next(struct rb_node *node) parent->rb_right = NULL; snode = container_of(node, struct stat_node, node); + if (ts->stat_release) + ts->stat_release(snode->stat); kfree(snode); return parent; @@ -78,7 +81,7 @@ static void reset_stat_session(struct stat_session *session) struct rb_node *node = session->stat_root.rb_node; while (node) - node = release_next(node); + node = release_next(session->ts, node); session->stat_root = RB_ROOT; } diff --git a/kernel/trace/trace_stat.h b/kernel/trace/trace_stat.h index f3546a2cd82..8f03914b9a6 100644 --- a/kernel/trace/trace_stat.h +++ b/kernel/trace/trace_stat.h @@ -18,6 +18,8 @@ struct tracer_stat { int (*stat_cmp)(void *p1, void *p2); /* Print a stat entry */ int (*stat_show)(struct seq_file *s, void *p); + /* Release an entry */ + void (*stat_release)(void *stat); /* Print the headers of your stat entries */ int (*stat_headers)(struct seq_file *s); }; |