Messages in this thread Patch in this message | | | Date | Thu, 13 Nov 2014 20:13:03 -0500 | From | Steven Rostedt <> | Subject | [RFC][PATCH 19/23 v4] seq_buf: Create seq_buf_used() to find out how much was written |
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From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
Add a helper function seq_buf_used() that replaces the SEQ_BUF_USED() private macro to let callers have a method to know how much of the seq_buf was written to.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- include/linux/seq_buf.h | 6 ++++++ kernel/trace/seq_buf.c | 5 +---- 2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index 3e550d214187..8fda502ee630 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -64,6 +64,12 @@ seq_buf_buffer_left(struct seq_buf *s) return s->size - s->len; } +/* How much buffer was written? */ +static inline unsigned int seq_buf_used(struct seq_buf *s) +{ + return min((s)->len, (s)->size); +} + /** * seq_buf_get_buf - get buffer to write arbitrary data to * @s: the seq_buf handle diff --git a/kernel/trace/seq_buf.c b/kernel/trace/seq_buf.c index 4f35a783b82f..3657af4b5f53 100644 --- a/kernel/trace/seq_buf.c +++ b/kernel/trace/seq_buf.c @@ -16,9 +16,6 @@ #include <linux/seq_file.h> #include <linux/seq_buf.h> -/* How much buffer is written? */ -#define SEQ_BUF_USED(s) min((s)->len, (s)->size) - /** * seq_buf_print_seq - move the contents of seq_buf into a seq_file * @m: the seq_file descriptor that is the destination @@ -28,7 +25,7 @@ */ int seq_buf_print_seq(struct seq_file *m, struct seq_buf *s) { - unsigned int len = SEQ_BUF_USED(s); + unsigned int len = seq_buf_used(s); return seq_write(m, s->buffer, len); } -- 2.1.1
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