Messages in this thread Patch in this message | | | From | Wang Long <> | Subject | [RFC PATCH 04/17] tracing: Add a seq_buf_clear() helper and clear len and readpos in init | Date | Thu, 14 May 2015 11:34:51 +0000 |
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From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
commit 0736c033a81547b1cdc5120fc8dd60e26a00fd28 upstream.
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> [wanglong: backport to 3.10 stable] Signed-off-by: Wang Long <long.wanglong@huawei.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- include/linux/seq_buf.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index d14dc90..5d91262 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -22,13 +22,18 @@ struct seq_buf { loff_t readpos; }; +static inline void seq_buf_clear(struct seq_buf *s) +{ + s->len = 0; + s->readpos = 0; +} + static inline void seq_buf_init(struct seq_buf *s, unsigned char *buf, unsigned int size) { s->buffer = buf; s->size = size; - s->len = 0; - s->readpos = 0; + seq_buf_clear(s); } /* -- 1.8.3.4
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