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Tasklist

FS#47442 - [linux] Enable CONFIG_VGACON_SOFT_SCROLLBACK

Attached to Project: Arch Linux
Opened by Curtis Shimamoto (WonderWoofy) - Saturday, 19 December 2015, 07:08 GMT
Last edited by Tobias Powalowski (tpowa) - Wednesday, 13 January 2016, 16:16 GMT
Task Type Feature Request
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas B├Ąchler (brain0)
Architecture All
Severity Very Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
I would like to request that CONFIG_VGACON_SOFT_SCROLLBACK be turned on in the kernel config. This would enable one to use the variable VGACON_SOFT_SCROLLBACK_SIZE to set the buffer size of the tty.

I am pretty sure that Red Hat Enterprise Linux (and CentOS) set this to the following in their default kernel configuration:
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64

This is really not a priority request whatsoever. So please feel free to ignore this as long as you need if there are other more pressing packaging issues to address.

I also don't know if Archlinux chooses not to enable such options for any reasons either. So if this has been discussed in the past, please feel free to ignore this request.


Additional info:
* linux (also linux-zen and linux-grsec)


Patch (the changes are small, so I am just pasting it here)
(x86_64)
--- config.x86_64 2015-12-18 15:07:03.045399836 -0800
+++ config.x86_64.new 2015-12-18 22:58:22.110415869 -0800
@@ -4913,7 +4913,8 @@
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
-# CONFIG_VGACON_SOFT_SCROLLBACK is not set
+CONFIG_VGACON_SOFT_SCROLLBACK=y
+CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25

(i686)
--- config 2015-12-18 15:07:03.042066579 -0800
+++ config.new 2015-12-18 22:59:04.217793966 -0800
@@ -5085,7 +5085,8 @@
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
-# CONFIG_VGACON_SOFT_SCROLLBACK is not set
+CONFIG_VGACON_SOFT_SCROLLBACK=y
+CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
# CONFIG_MDA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80


Tobias and Thomas,

I would like to reiterate that although it would be nice to have this request addressed, I really feel as though you linux{,-headers,-docs} package maintainers should focus their efforts elsewhere if even slightly necessary. I really appreciate all the work that goes in to making this distribution excellent, and I know that it is a very small, but talented, team of folks to make Archlinux. As such, I will not be offended nor saddened if this request goes unanswered or gets shot down without comment (though if there is technical reason not to implement, it would be interesting to know).

Thanks for all you do!

-WonderWoofy

This task depends upon

Closed by  Tobias Powalowski (tpowa)
Wednesday, 13 January 2016, 16:16 GMT
Reason for closing:  Fixed
Additional comments about closing:  4.4-1

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