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-rw-r--r--package/busybox/config/modutils/Config.in16
1 files changed, 16 insertions, 0 deletions
diff --git a/package/busybox/config/modutils/Config.in b/package/busybox/config/modutils/Config.in
index 9ec54b1..db515b5 100644
--- a/package/busybox/config/modutils/Config.in
+++ b/package/busybox/config/modutils/Config.in
@@ -121,6 +121,22 @@ config BUSYBOX_CONFIG_FEATURE_2_4_MODULES
This increases size considerably. Say N unless you plan
to run ancient kernels.
+config BUSYBOX_CONFIG_FEATURE_INSMOD_TRY_MMAP
+ bool "Try to load module from a mmap'ed area"
+ default n
+ depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE_SMALL
+ help
+ This option causes module loading code to try to mmap
+ module first. If it does not work (for example,
+ it does not work for compressed modules), module will be read
+ (and unpacked if needed) into a memory block allocated by malloc.
+
+ The only case when mmap works but malloc does not is when
+ you are trying to load a big module on a very memory-constrained
+ machine. Malloc will momentarily need 2x as much memory as mmap.
+
+ Choosing N saves about 250 bytes of code (on 32-bit x86).
+
config BUSYBOX_CONFIG_FEATURE_INSMOD_VERSION_CHECKING
bool "Enable module version checking"
default n