Steven Rostedt wanted to do a little housekeeping, specifically with the function tracing code used in debugging the kernel. Up until then, the kernel could enable function tracing using either GCC's -pg flag or a combination of -pg and -mfentry. In each case, GCC would create a special routine that would execute at the start of each function, so the kernel could track calls to all functions.

There are basically three types of people in the world: those who know little or nothing about bash job control, those who know enough to believe that it's nothing that they would ever use, and those who can just skim the rest of this post. Now, don't get me wrong, I'm not saying that bash's job control is going to change your world, but there are a couple simple everyday scenarios where job control can be useful, and often, it even can eliminate an "oh crap" moment.

Note: this article is a followup to Zack Brown's "Android Low Memory Killer—In or Out?"

The kernel this. The kernel that. People often refer to one operating system's kernel or another without truly knowing what it does or how it works or what it takes to make one. What does it take to write a custom (and non-Linux) kernel?

Enterprise comes to the micro server.