Commit 0736c033 authored Oct 29, 2014 by Steven Rostedt (Red Hat) Committed by Steven Rostedt Nov 19, 2014

tracing: Add a seq_buf_clear() helper and clear len and readpos in init

Add a helper function seq_buf_clear() that resets the len and readpos
fields of a seq_buf. Currently it is only used in the seq_buf_init()
but will be used later when updating the seq_file code.

Link: http://lkml.kernel.org/r/20141104160222.352309995@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>

parent 9a777793

include/linux/seq_buf.h

+7 −2

Original line number	Original line	Diff line number	Diff line
	@@ -22,13 +22,18 @@ struct seq_buf {
	loff_t readpos;		loff_t readpos;
	};		};

			static inline void seq_buf_clear(struct seq_buf *s)
			{
			s->len = 0;
			s->readpos = 0;
			}

	static inline void		static inline void
	seq_buf_init(struct seq_buf s, unsigned char buf, unsigned int size)		seq_buf_init(struct seq_buf s, unsigned char buf, unsigned int size)
	{		{
	s->buffer = buf;		s->buffer = buf;
	s->size = size;		s->size = size;
	s->len = 0;		seq_buf_clear(s);
	s->readpos = 0;
	}		}

	/*		/*