This particular method is extremely deprecated, and is architecture-dependent as well. It is possible to add a function call within the body of mem_init(), which resides, for the i86 platform, in the file arch/i386/mm/init.c. In the middle of this function, two functions for initializing SCSI and sound-driver memory are provided. Also, arch/i386/kernel/head.S provides another platform-dependent way to allocate memory. This is where initial memory management is set up.
If you understand these well enough to muck with them, you don't need my help. These are last resorts for memory allocation, and you need to know exactly what you need to do, and why the dynamic allocation strategies will not work for you, before considering these “hacks”.
Michael K. Johnson is the Editor of Linux Journal, and pretends to be a Linux guru in his spare time. He can be reached via email as firstname.lastname@example.org.
Fast/Flexible Linux OS Recovery
On Demand Now
In this live one-hour webinar, learn how to enhance your existing backup strategies for complete disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible full-system recovery solution for UNIX and Linux systems.
Join Linux Journal's Shawn Powers and David Huffman, President/CEO, Storix, Inc.
Free to Linux Journal readers.Register Now!
- Download "Linux Management with Red Hat Satellite: Measuring Business Impact and ROI"
- Sony Settles in Linux Battle
- Libarchive Security Flaw Discovered
- Profiles and RC Files
- Maru OS Brings Debian to Your Phone
- The Giant Zero, Part 0.x
- Snappy Moves to New Platforms
- Astronomy for KDE
- Git 2.9 Released
- Understanding Ceph and Its Place in the Market
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide