diff options
Diffstat (limited to 'drivers/video/console/Kconfig')
| -rw-r--r-- | drivers/video/console/Kconfig | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig index c3f1fb9ee820..5b71bd905a60 100644 --- a/drivers/video/console/Kconfig +++ b/drivers/video/console/Kconfig @@ -43,9 +43,30 @@ config VGACON_SOFT_SCROLLBACK_SIZE range 1 1024 default "64" help - Enter the amount of System RAM to allocate for the scrollback - buffer. Each 64KB will give you approximately 16 80x25 - screenfuls of scrollback buffer + Enter the amount of System RAM to allocate for scrollback + buffers of VGA consoles. Each 64KB will give you approximately + 16 80x25 screenfuls of scrollback buffer. + +config VGACON_SOFT_SCROLLBACK_PERSISTENT_ENABLE_BY_DEFAULT + bool "Persistent Scrollback History for each console by default" + depends on VGACON_SOFT_SCROLLBACK + default n + help + Say Y here if the scrollback history should persist by default when + switching between consoles. Otherwise, the scrollback history will be + flushed each time the console is switched. This feature can also be + enabled using the boot command line parameter + 'vgacon.scrollback_persistent=1'. + + This feature might break your tool of choice to flush the scrollback + buffer, e.g. clear(1) will work fine but Debian's clear_console(1) + will be broken, which might cause security issues. + You can use the escape sequence \e[3J instead if this feature is + activated. + + Note that a buffer of VGACON_SOFT_SCROLLBACK_SIZE is taken for each + created tty device. + So if you use a RAM-constrained system, say N here. config MDA_CONSOLE depends on !M68K && !PARISC && ISA |