tracing: Convert seq_buf_path() to be like seq_path()

Rewrite seq_buf_path() like it is done in seq_path() and allow
it to accept any escape character instead of just "\n".

Making seq_buf_path() like seq_path() will help prevent problems
when converting seq_file to use the seq_buf logic.

Link: http://lkml.kernel.org/r/20141104160222.048795666@goodmis.org
Link: http://lkml.kernel.org/r/20141114011412.338523371@goodmis.org

Tested-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Petr Mladek <pmladek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/kernel/trace/trace_seq.c b/kernel/trace/trace_seq.c
index 8c0c54fe674b..74cacc930c24 100644
--- a/kernel/trace/trace_seq.c
+++ b/kernel/trace/trace_seq.c
@@ -326,7 +326,6 @@ EXPORT_SYMBOL_GPL(trace_seq_putmem_hex);
 int trace_seq_path(struct trace_seq *s, const struct path *path)
 {
         unsigned int save_len = s->seq.len;
-        int ret;
 
         if (s->full)
                 return 0;
@@ -338,7 +337,7 @@ int trace_seq_path(struct trace_seq *s, const struct path *path)
                 return 0;
         }
 
-        ret = seq_buf_path(&s->seq, path);
+        seq_buf_path(&s->seq, path, "\n");
 
         if (unlikely(seq_buf_has_overflowed(&s->seq))) {
                 s->seq.len = save_len;
@@ -346,7 +345,7 @@ int trace_seq_path(struct trace_seq *s, const struct path *path)
                 return 0;
         }
 
-        return ret;
+        return 1;
 }
 EXPORT_SYMBOL_GPL(trace_seq_path);