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seq_buf: Create seq_buf_used() to find out how much was written

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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.

Link: http://lkml.kernel.org/r/20141114011412.170377300@goodmis.org
Link: http://lkml.kernel.org/r/20141114011413.321654244@goodmis.org

Reviewed-by: Petr Mladek <pmladek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat)
2014-11-06 16:38:28 -05:00
committed by Steven Rostedt
parent 0736c033a8
commit eeab98154d
2 changed files with 7 additions and 4 deletions
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5
kernel/trace/seq_buf.c
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@@ -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 - 1)
/**
* 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);
}