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| author | Manuel Schölling <manuel.schoelling@gmx.de> | 2017-01-13 21:07:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-25 11:54:02 +0100 |
| commit | bcd375f7f71f7106c97516bf5395149954ef8810 (patch) | |
| tree | d3622fbb8a88f55aa8223c343e6dcb9b81d6740c /drivers/tty | |
| parent | 66da39eb91b42ab70dd49ef0b9ac5f4cfa76c9c3 (diff) | |
| download | linux-stable-bcd375f7f71f7106c97516bf5395149954ef8810.tar.gz linux-stable-bcd375f7f71f7106c97516bf5395149954ef8810.tar.bz2 linux-stable-bcd375f7f71f7106c97516bf5395149954ef8810.zip | |
console: Add callback to flush scrollback buffer to consw struct
This new callback is in preparation for persistent scrollback buffer
support for VGA consoles.
With a single scrollback buffer for all consoles, we could flush the
buffer just by invocating consw->con_switch(). But when each VGA console
has its own scrollback buffer, we need a new callback to tell the
video console driver which buffer to flush.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Reviewed-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Andrey Utkin <andrey_utkin@fastmail.com>
Tested-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/vt/vt.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 4c10a9df3b91..9d3ce505e7ab 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -625,6 +625,14 @@ static void save_screen(struct vc_data *vc) vc->vc_sw->con_save_screen(vc); } +static void flush_scrollback(struct vc_data *vc) +{ + WARN_CONSOLE_UNLOCKED(); + + if (vc->vc_sw->con_flush_scrollback) + vc->vc_sw->con_flush_scrollback(vc); +} + /* * Redrawing of screen */ @@ -1171,6 +1179,7 @@ static void csi_J(struct vc_data *vc, int vpar) case 3: /* erase scroll-back buffer (and whole display) */ scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char, vc->vc_screenbuf_size); + flush_scrollback(vc); set_origin(vc); if (con_is_visible(vc)) update_screen(vc); |