From 744533d61e6ca69ceee84197d1b0af882ad6b2ad Mon Sep 17 00:00:00 2001
From: dumbbell <dumbbell@FreeBSD.org>
Date: Tue, 4 Nov 2014 23:51:35 +0000
Subject: [PATCH] vt(4): Support syscons' SC_HISTORY_SIZE to configure history
 size

Therefore, to set histry size to 2000 lines, add the following line to
your kernel configuration file:
    options SC_HISTORY_SIZE=2000

The default history remains at 500 lines.

MFC after:	1 week
---
 sys/dev/vt/vt.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sys/dev/vt/vt.h b/sys/dev/vt/vt.h
index 578f1a8ff09e..262ffaf531e1 100644
--- a/sys/dev/vt/vt.h
+++ b/sys/dev/vt/vt.h
@@ -182,7 +182,6 @@ struct vt_buf {
 #define	VBF_SCROLL	0x8	/* scroll locked mode. */
 #define	VBF_HISTORY_FULL 0x10	/* All rows filled. */
 	unsigned int		 vb_history_size;
-#define	VBF_DEFAULT_HISTORY_SIZE	500
 	int			 vb_roffset;	/* (b) History rows offset. */
 	int			 vb_curroffset;	/* (b) Saved rows offset. */
 	term_pos_t		 vb_cursor;	/* (u) Cursor position. */
@@ -194,6 +193,12 @@ struct vt_buf {
 	term_char_t		**vb_rows;	/* (u) Array of rows */
 };
 
+#ifdef SC_HISTORY_SIZE
+#define	VBF_DEFAULT_HISTORY_SIZE	SC_HISTORY_SIZE
+#else
+#define	VBF_DEFAULT_HISTORY_SIZE	500
+#endif
+
 void vtbuf_copy(struct vt_buf *, const term_rect_t *, const term_pos_t *);
 void vtbuf_fill_locked(struct vt_buf *, const term_rect_t *, term_char_t);
 void vtbuf_init_early(struct vt_buf *);