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-rw-r--r--drivers/base/Kconfig10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 8021e19fa1ea..fd52c48ee762 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -3,10 +3,18 @@ menu "Generic Driver Options"
config UEVENT_HELPER_PATH
string "path to uevent helper"
depends on HOTPLUG
- default "/sbin/hotplug"
+ default ""
help
Path to uevent helper program forked by the kernel for
every uevent.
+ Before the switch to the netlink-based uevent source, this was
+ used to hook hotplug scripts into kernel device events. It
+ usually pointed to a shell script at /sbin/hotplug.
+ This should not be used today, because usual systems create
+ many events at bootup or device discovery in a very short time
+ frame. One forked process per event can create so many processes
+ that it creates a high system load, or on smaller systems
+ it is known to create out-of-memory situations during bootup.
config DEVTMPFS
bool "Maintain a devtmpfs filesystem to mount at /dev"