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c/r: introduce CHECKPOINT_RESTORE symbol

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For checkpoint/restore we need auxilary features being compiled into the
kernel, such as additional prctl codes, /proc/<pid>/map_files and etc...
but same time these features are not mandatory for a regular kernel so
CHECKPOINT_RESTORE config symbol should bring a way to disable them all at
once if one wish to get rid of additional functionality.

Signed-off-by: Cyrill Gorcunov <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Andrew Vagin <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: Vasiliy Kulikov <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Cyrill Gorcunov 2012-01-12 17:20:49 -08:00 • committed by Linus Torvalds
commit 067bce1a06
1 changed files with 11 additions and 0 deletions
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11
init/Kconfig
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@ -783,6 +783,17 @@ config DEBUG_BLK_CGROUP
endif # CGROUPS
config CHECKPOINT_RESTORE
bool "Checkpoint/restore support" if EXPERT
default n
help
Enables additional kernel features in a sake of checkpoint/restore.
In particular it adds auxiliary prctl codes to setup process text,
data and heap segment sizes, and a few additional /proc filesystem
entries.
If unsure, say N here.
menuconfig NAMESPACES
bool "Namespaces support" if EXPERT
default !EXPERT