CODEWITHSUNDEEP
androidlinuxmemorykernelrtos
sandeep
sandeep

Reputation: 31

Android OS kernel related queries

I was looking to write some case study on Android's kernel. This would be a part of my curriculum in the Advanced Operating systems class. The primary focus that i wanted was the actual implementation of how priority queues are implemented in any RTOS just to relate it to the theory we have studied in the class. But i came to know that finding information is really a big task rather than just having a great idea. :( So for now i want to limit myself to either 1. Kernel (either process or memory) which will be very specific or 2. Difference in Android and Linux OS What i have observed is that though we have some information on both of them but the data given can be even seen in my text book. What i wanted was a practical difference.

I hope I would be getting some pointers in the direction.

Upvotes: 0

Views: 853

Answers (2)

Sebastian Roth
Sebastian Roth

Reputation: 11537

A good way to start learning is the Android git repositories: https://android.googlesource.com

Here are some politics, but eventually you find more links for yourself: http://www.kroah.com/log/linux/android-kernel-problems.html

Upvotes: 0

Yann Ramin
Yann Ramin

Reputation: 33197

The Android Linux kernel and the mainline Linux kernel are close. There are several key differences:

  1. Android has the major wakelock patches applied. These are not mainline. Google should reveal years of back and forth on this issue.
  2. Android has the binder security model, mainline does not.
  3. Android has an all new framebuffer to support SurfaceFlinger.
  4. Hardware support for the phones. The mainline kernel does not have direct support for all of the ARM processors and devices. Consider the Android kernel trees an amalgam of Mainline+ARM(OMAP)+Vendor patches.
  5. Specific embedded tuning.

However, 95+% of the code is the same in Mainline Linux vs Android Linux. Android is not an RTOS (the RT parts are handled in a separate processor on the radio modules) .

Upvotes: 2

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