staging: android: Add more help description on Kconfig

This patch adds more help description on android Kconfig for
- lowmemory killer
- Timed gpio (same for timed output)

Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig
index 8feb9048e62ffa45cf601b5deeb392c5be4486e3..24d657b3ab9946d0166198c213c025843f204aad 100644 (file)
--- a/drivers/staging/android/Kconfig
+++ b/drivers/staging/android/Kconfig
@@ -22,11 +22,20 @@ config ANDROID_TIMED_GPIO
        tristate "Android timed gpio driver"
        depends on GPIOLIB && ANDROID_TIMED_OUTPUT
        default n
+        ---help---
+         Unlike generic gpio is to allow programs to access and manipulate gpio
+         registers from user space, timed output/gpio is a system to allow changing
+         a gpio pin and restore it automatically after a specified timeout.
 
 config ANDROID_LOW_MEMORY_KILLER
        bool "Android Low Memory Killer"
        ---help---
-         Registers processes to be killed when memory is low
+         Registers processes to be killed when low memory conditions, this is useful
+         as there is no particular swap space on android.
+
+         The registered process will kills according to the priorities in android init
+         scripts (/init.rc), and it defines priority values with minimum free memory size
+         for each priority.
 
 config SYNC
        bool "Synchronization framework"