staging: android: Add some Kconfig help entries

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / staging / android / Kconfig

diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig
index 0ce50d1..465a28c 100644 (file)
--- a/drivers/staging/android/Kconfig
+++ b/drivers/staging/android/Kconfig
@@ -11,19 +11,42 @@ if ANDROID
 config ANDROID_BINDER_IPC
        bool "Android Binder IPC Driver"
        default n
+       ---help---
+         Binder is used in Android for both communication between processes,
+         and remote method invocation.
+
+         This means one Android process can call a method/routine in another
+         Android process, using Binder to identify, invoke and pass arguments
+         between said processes.
 
 config ASHMEM
        bool "Enable the Anonymous Shared Memory Subsystem"
        default n
        depends on SHMEM || TINY_SHMEM
-       help
+       ---help---
          The ashmem subsystem is a new shared memory allocator, similar to
          POSIX SHM but with different behavior and sporting a simpler
          file-based API.
 
+         It is, in theory, a good memory allocator for low-memory devices,
+         because it can discard shared memory units when under memory pressure.
+
 config ANDROID_LOGGER
        tristate "Android log driver"
        default n
+       ---help---
+         This adds support for system-wide logging using four log buffers.
+
+         These are:
+
+             1: main
+             2: events
+             3: radio
+             4: system
+
+         Log reading and writing is performed via normal Linux reads and
+         optimized writes. This optimization avoids logging having too
+         much overhead in the system.
 
 config ANDROID_TIMED_OUTPUT
        bool "Timed output class driver"
@@ -38,13 +61,13 @@ config ANDROID_LOW_MEMORY_KILLER
        bool "Android Low Memory Killer"
        default N
        ---help---
-         Register processes to be killed when memory is low
+         Registers processes to be killed when memory is low
 
 config ANDROID_INTF_ALARM_DEV
        bool "Android alarm driver"
        depends on RTC_CLASS
        default n
-       help
+       ---help---
          Provides non-wakeup and rtc backed wakeup alarms based on rtc or
          elapsed realtime, and a non-wakeup alarm on the monotonic clock.
          Also exports the alarm interface to user-space.