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vt(4): Support syscons' SC_HISTORY_SIZE to configure history size

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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
This commit is contained in:
dumbbell 2014-11-04 23:51:35 +00:00
parent bf764fc982
commit 744533d61e
1 changed files with 6 additions and 1 deletions
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7
sys/dev/vt/vt.h
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@ -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 *);