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authorzhangwei(Jovi) <jovi.zhangwei@huawei.com>2013-03-11 15:13:29 +0800
committerSteven Rostedt <rostedt@goodmis.org>2013-03-15 13:22:05 -0400
commit687c878afb526a0c3117dbc408ca76ad80d689f7 (patch)
tree235c0d1a9e293dfecde5d28dc42ff51e9452df62 /kernel/trace
parent6c43e554a2a5c1f2caf1733d46719bc58de3e37b (diff)
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tracing: Use pr_warn_once instead of open coded implementation
Use pr_warn_once, instead of making an open coded implementation. Link: http://lkml.kernel.org/r/513D8419.20400@huawei.com Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 7f0e7fa..bba1ba9 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5205,8 +5205,6 @@ static inline int register_snapshot_cmd(void) { return 0; }
struct dentry *tracing_init_dentry_tr(struct trace_array *tr)
{
- static int once;
-
if (tr->dir)
return tr->dir;
@@ -5216,11 +5214,8 @@ struct dentry *tracing_init_dentry_tr(struct trace_array *tr)
if (tr->flags & TRACE_ARRAY_FL_GLOBAL)
tr->dir = debugfs_create_dir("tracing", NULL);
- if (!tr->dir && !once) {
- once = 1;
- pr_warning("Could not create debugfs directory 'tracing'\n");
- return NULL;
- }
+ if (!tr->dir)
+ pr_warn_once("Could not create debugfs directory 'tracing'\n");
return tr->dir;
}