driver core: add more help description for "path to uevent helper"

The kernel configuration UEVENT_HELPER_PATH is a string to
the uevent helper program. Add more description about how
to disable this feature and how to enable it again during
runtime.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 52c6758836846519a350056f2383bbf80f141b50..fa64fa04feec5f96dd16a56301c67a3dc47994b3 100644 (file)
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -16,6 +16,11 @@ config UEVENT_HELPER_PATH
          that it creates a high system load, or on smaller systems
          it is known to create out-of-memory situations during bootup.
 
+         To disable user space helper program execution at early boot
+         time specify an empty string here. This setting can be altered
+         via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper
+         later at runtime.
+
 config DEVTMPFS
        bool "Maintain a devtmpfs filesystem to mount at /dev"
        depends on HOTPLUG