kernel code

Kernel code and data are always addressable, ready to handle interrupts or system calls at any time.

Below the system call interface is the kernel code, which can be more accurately defined as the architecture-independent kernel code.

Maskable interrupt sources that cannot preempt the kernel code and are thus able to invoke operating system APIs from within their handlers.

Tags are open to all kernel code and can be called directly from your kernel modules without kernel code modification.

DSF is especially helpful in executing device driver kernel code where the device may not be present.

As you can see, the initial program setup is nearly identical to the hdaps kernel code.

The tests should adequately cover the kernel code to help support the stability statement produced from their results.

Some of the projects he has worked on over the past year include the Linux Test Project and kernel code coverage analysis.

One is the "common" patch that contains the changes for the generic kernel code, and the other is the architecture-specific patch.

The first page of virtual memory in the kernel address space can be accessed by kernel code, but is marked as read-only.

This aptly named tool is essentially a patch to the kernel code that lets hackers access kernel memory and data structures.

This chapter introduces techniques you can use to monitor kernel code and trace errors under such trying circumstances.

Of course, not all sections of the kernel code can be preempted.

The Tprof tool provides this information for multiple types of code, including application code, library routines, and kernel code.

Kernel code is not automatically included simply because someone contributes it and suggests it has value.

KQEMU is a driver (kernel module for Linux) that allows user-mode code and kernel code to execute directly on the host CPU.

Modifying the template to execute the desired kernel code is relatively straightforward.

Certain critical sections of the kernel code are locked against preemption.

If you write kernel code, you'll run across one or all three of these APIs, so they're definitely worth exploring.

Even though the kernel code has been made meaningfully more efficient, the test uses more cycles to accomplish the same file transfer.

Linux reserves few page frames exclusively for the kernel code and data structures.

When developing a kernel code or running a development kernel, sometimes a kernel panics.

This requires changes to the OProfile kernel code to sample the SPU instruction pointers regularly.

L22 - Virtual machines, OS Kernel Code, Supervisor Calls, Scheduling.

The first module the thread ran is vmlinux, or kernel code.

us: Time spent running non-kernel code.

sy: Time spent running kernel code.

kgdb helps to place breakpoints in kernel code, so you can step through it and observe the variables.

It can be of three-type kernel code, user code, and shared library code.

The subroutines that ran in the kernel code are idled (the process that is run when the CPU is idle) and schedule (the kernel scheduler).

I hope you have gained some insight into OProfile and the ways you can optimize the kernel code.

Research on Dynamic Detecting Techniques of Kernel Code Hotspots in Operating System

Research of Operating System Kernel Code Hotspot's Dynamic Detection