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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>
This commit is contained in:
zhangwei(Jovi) 2013-03-11 15:13:29 +08:00 committed by Steven Rostedt
parent 6c43e554a2
commit 687c878afb
1 changed files with 2 additions and 7 deletions
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9
kernel/trace/trace.c
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@ -5205,8 +5205,6 @@ static inline int register_snapshot_cmd(void) { return 0; }
struct dentry *tracing_init_dentry_tr(struct trace_array *tr) struct dentry *tracing_init_dentry_tr(struct trace_array *tr)
{ {
static int once;
if (tr->dir) if (tr->dir)
return 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) if (tr->flags & TRACE_ARRAY_FL_GLOBAL)
tr->dir = debugfs_create_dir("tracing", NULL); tr->dir = debugfs_create_dir("tracing", NULL);
if (!tr->dir && !once) { if (!tr->dir)
once = 1; pr_warn_once("Could not create debugfs directory 'tracing'\n");
pr_warning("Could not create debugfs directory 'tracing'\n");
return NULL;
}
return tr->dir; return tr->dir;
} }