diff options
| author | Paolo \'Blaisorblade\' Giarrusso <blaisorblade_spam@yahoo.it> | 2005-01-14 23:27:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-01-14 23:27:00 -0800 |
| commit | 525a0ecc6a585f375ed2ae671924c809c56057af (patch) | |
| tree | bb059bc8dcadbbf586e86136c5f673162df491b4 /arch | |
| parent | 77b269fe11cefbddf0fde155de87a3d1849bab2c (diff) | |
| download | history-525a0ecc6a585f375ed2ae671924c809c56057af.tar.gz | |
[PATCH] uml: readd CONFIG_MAGIC_SYSRQ for UML
This config option was lost during the creation of lib/Kconfig.debug, due to a
bad expressed dependency; I also moved the option back to its original place
for UML (it is near CONFIG_MCONSOLE since it depends on that).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index f399b64a137c4f..30781fd57a85d8 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -145,6 +145,25 @@ config MCONSOLE It is safe to say 'Y' here. +config MAGIC_SYSRQ + bool "Magic SysRq key" + depends on MCONSOLE + ---help--- + If you say Y here, you will have some control over the system even + if the system crashes for example during kernel debugging (e.g., you + will be able to flush the buffer cache to disk, reboot the system + immediately or dump some status information). A key for each of the + possible requests is provided. + + This is the feature normally accomplished by pressing a key + while holding SysRq (Alt+PrintScreen). + + On UML, this is accomplished by sending a "sysrq" command with + mconsole, followed by the letter for the requested command. + + The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y + unless you really know what this hack does. + config HOST_2G_2G bool "2G/2G host address space split" default n |