understanding the linux kernel 3rd edition oreilly

... some process, the kernel lets the disk controller handle it, and resumes executing other processes. An interrupt notifies the kernel when the device has satisfied the read, so the former process ... while the CPU is running a kernel control path with the interrupts enabled. The first kernel control path is left unfinished and the CPU starts processing another kernel control path to handle the ... simplest case, the CPU executes a kernel control path sequentially from the first instruction to the last. When one of the following events occurs, however, the CPU interleaves the kernel control...

Ngày tải lên: 21/12/2013, 11:15

... address the segment, the kernel just loads the value yielded by the macro into the cs register. ã A kernel data segment. The fields of the corresponding Segment Descriptor in the GDT have the ... or the brk( ) system call (which is invoked internally by malloc( )), the kernel just updates the size of the heap memory region of the process. A page frame is Understanding the Linux Kernel ... permanently mapped by the kernel, and the "high memory," that is, the physical memory that is not permanently mapped by the kernel. Understanding the Linux Kernel 26 1.6.4 Process...

Ngày tải lên: 25/03/2014, 10:52

... into the overall struc- ture of the document. Every element in the document is either the parent or the child of another element, and it’s often both. An element is said to be the parent of another ... parent to another em element. Conversely, an element is the child of another element if it is directly beneath the other element. Thus, the anchor element in Figure 2-14 is a child of the strong ... {font-weight: bold;} Note the presence of the tilde (~) in the selector. It is the key to selection based on the presence of a space-separated word within the attribute’s value. If you omit the tilde, you...

Ngày tải lên: 31/03/2014, 16:49

... used by other languages. The CLS includes a subset of the Common Type System (CTS). The CTS defines the rules concerning data types. Of course, C# supports both the CLS and the CTS. I The C# ... because the format information in a word processor file will confuse the C# compiler. When entering the program, call the file Example.cs. Compiling the Program To compile the program, execute the ... before they are used. Further, the kind of values that the variable can hold must also be specified. This is called the type of the variable. In this case, x can hold integer values. These are...

Ngày tải lên: 06/08/2013, 17:29

... /lib/modules /kernel- version. Kernel image và initrd được đưa vào /boot/.  Với việc biên dịch kernel, với mỗi kernel có thể có các lỗi khác nhau. (Vì source kernel không đúng). Tùy theo tình huống ... - Chú ý: phải remove theo thứ tự ngược lại. - Liệt kê module lại để kiểm tra 2/ Compiling kernel: - Download source kernel từ trang kernel. org. - Để biên dịch được kernel, cần cài bộ C ... MẠNG ATHENA 2 Bis Đinh Tiên Hoàng, P. Đa Cao, Q.1, TP.HCM Tel: (84-8) 38244041 – 0989012418 www.athena.edu.vn Biên soạn: Nguyễn Trí Thức – Lưu Hành Nội Bộ 97 Bài Lab 6: Compiling the linux...

Ngày tải lên: 29/09/2013, 20:20

... Understanding the Linux Kernel [BC00] [BC03] tend to cover the entire kernel rather than one topic with the notable exception of device drivers [RC01]. These books, particularly Understanding the Linux Kernel, provideinvaluable ... Between these systems, they have the bulk of the code patterns that are prevalent throughout the rest of the kernel code, which makes the deciphering of more complex systems such as the page replacement ... ZONE NORMAL.Thisisthephysical memory directly accessible by the kernel and is related to the kernel/ userspace split in the linear address space marked by PAGE OFFSET .The value, with the others, is stored...

Ngày tải lên: 08/03/2014, 23:20

... talk to each other over networks. The two protocols that give the suite its name are among the most important, but there are many others, and we shall meet some of them later. These protocols ... Whatever the name of the module, the LoadModule directive requires the exact filename. 2.6.2.1 LoadFile The LoadFile directive links in the named object files or libraries when the server ... required by the protocol, by convention there is a dividing line somewhere inside this number: to the left is the network number and to the right, the host number. Two machines on the same physical...

Ngày tải lên: 25/03/2014, 10:39

... enforcing the policy. When you’re done modifying the configuration file, you’ll have the following: # This file controls the state of SELinux on the system. # SELINUX= can take one of these three ... configuration of SELinux, but we’re going to disable it for the sake of simplicity. While disabling SELinux is not the ideal situation, the configuration of SELinux is beyond the scope of this ... Ubuntu, you can skip to the next section. In CentOS, the Security-Enhanced Linux (SELinux) system is enabled by default, and it often gets in the way of Asterisk. Sometimes the issues are quite...

Ngày tải lên: 31/03/2014, 01:20

... files to the server. The easiest way to do this is to drag the files from another open window, and then drop them in the FTP window. Figure 3-12 shows the steps to upload the résumé example. ... QUESTION The Web vs. the Internet Is there a difference between the Web and the Internet? Newscasters, politicians, and regular people often use these terms interchangeably. Technically, however, the ... the <b> element, they mean the whole shebang—start tag, end tag, and the content in between. When someone refers to a <b> tag, they simply means the instruction that trig- gers the...

Ngày tải lên: 31/03/2014, 16:46

... do anything to the HTML—just create the CSS rule, and let the browser do the rest. Tag selectors are easy to spot in a CSS rule, since they bear the exact same name as the tag they style—p, ... to a page; another option is the CSS @import directive, as discussed on page 42. The link tag specifies the location of the external style sheet. The rel attribute simply lets the browser know ... have the same tag, even if they look and act dierently. The checkbox, text box, submit button, and other form fields all share the <input> tag. The type attribute’s value is what gives the...

Ngày tải lên: 31/03/2014, 16:47

... is the difference between = (single-equal) and == (double-equal)? The = (single-equal) assigns the value on the right to a variable on the left. The == (double-equal) tests if two things have the ... modify the parts of the functions. Try to change it on purpose to make another value. 4. Finally, do the inverse. Write out a simple formula and use the functions in the You should study the output ... Questions What is the difference between %r and %s? Use the %r for debugging, since it displays the "raw" data of the variable, but the others are used for displaying to users. What's the point...

Ngày tải lên: 15/04/2014, 21:04

... follow the same plan — sometimes called the build plan — so that the right set of components comes together in the right way and at the right time for the earliest possible discovery of the most ... is a third edition, and that happens only when the first edition and second edition are successful. So, first off, I’d like to thank those of you who bought the first edition or second edition. I ... related to these risks. At the most general level, the process of testing should allow the test organization to assess the quality risks and to understand the failures that exist in the system under...

Ngày tải lên: 28/04/2014, 16:25

... the difference between = (single-equal) and == (double- equal)? The = (single-equal) assigns the value on the right to a variable on the left. The == (double-equal) tests if two things have the ... In the first way, I put the characters \n (back-slash n) between the names of the months. What these two characters do is put a new line character into the string at that point. This use of the ... Questions What is the difference between %r and %s? Use the %r for debugging, since it displays the "raw" data of the variable, but the others are used for displaying to users. What's the point...

Ngày tải lên: 13/05/2014, 11:41

... code in the kernel. MAINTAINERS lists the names of the individuals who maintain subsystems and drivers in the kernel. Makefile is the base kernel Makefile. Building the Kernel Building the kernel ... the kernel. Although the kernel certainly is unique in many ways, at the end of the day it is little different from any other large software project. Obtaining the Kernel Source The current Linux ... Introduction to the Linux Kernel As Linus and other kernel developers contribute to the Linux kernel, they decide how best to advance Linux without neglecting its Unix roots (and, more important, the Unix...

Ngày tải lên: 15/02/2014, 19:20

Ngày tải lên: 07/11/2013, 21:15

Ngày tải lên: 07/11/2013, 21:15

Ngày tải lên: 15/12/2013, 06:15

Ngày tải lên: 15/12/2013, 06:15

Ngày tải lên: 15/12/2013, 06:15