Dynamic RAM Console

Introduction

The Dynamic RAM Console is an alternative to Android ram-console and pstore console that does not require a dedicated memory region for its operation. It continually captures all console messages and stores them in a small dynamically allocated circular buffer in RAM. The content of this buffer persists across reboots and is available as /proc/kmsg.last.

Prerequisites

• Linux kernel 2.6.27+

Build instructions

1. Copy the file kmsg_last.c to the directory linux-X.Y.Z/fs/proc

2. Add the following line to the end of file linux-X.Y.Z/fs/proc/Makefile

   proc-$(CONFIG_PRINTK) += kmsg_last.o
   

3. Rebuild the Linux kernel

Directory structure

DRAMConsole
 |
 |--COPYING                   GNU General Public License version 2
 |--NEWS.md                   Version history
 |--README.md                 This file
 +--kmsg_last.c               The Dynamic RAM Console kernel module

License

The code is available under the GNU General Public License version 2 or later. See the COPYING file for the full license text.