understanding the linux kernel ppt

... 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

... 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

... /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

Ngày tải lên: 13/12/2013, 05:15

... you're programming, try not to lose the expression of the problem in a mass of low-level syntax; try to express the problem you are solving in the solution: class BankAccount { public ... design. It fails to represent the functionality required when withdrawing money from and depositing money into an account. (If you know of a bank that allows you to set the balance directly, please...

Ngày tải lên: 15/12/2013, 00:15

... PARTICULAR THE ABILITY OF THE kernel (which is the heart of the oper- ATING SYSTEM OF THIS -INIX DISTRIBUTION DIDNT PLEASE HIM MUCH (E DECIDED TO CREATE A BETTER kernel and gave it the name Linux. Possibly ... FOCUSING ON THESE THREE ONLY ) AM NOT MAKING A STATEMENT ABOUT the quality of the other distributions; however, it makes sense to focus on these three as they make up more than 90% of the Linux market. ... home, you are probably the only user who is logged in to it. However, if you are a Linux user at the Linux server in your company, there can be other users as well. In the latter case, it is...

Ngày tải lên: 10/12/2013, 14:15

... example, the command rm -i is aliased as rm. The effect is that the -i option appears whenever you issue the rm command, whether or not you type the option. The -i option specifies that the shell ... initially find the shell cumbersome, and some retreat to the familiar comfort of the graphical user interface, avoiding the shell whenever possible. the output of the ls command to the wc command, ... includes the most popular Unix shells, as shown in Table 13.1. The most popular Linux shell is the BASH shell (the "Bourne Again SHell"), based on the original Unix Bourne shell. The BASH...

Ngày tải lên: 14/12/2013, 13:15

... rules, can do their work in either hardware or software or, as with most protocol stacks, in a com- bination of the two. The nature of these stacks is that the lower layers do their work in hardware ... to operate together, no matter who created the protocols and what computer vendor supports them. The main benefits of the OSI model include the following: ã Helps users understand the big picture ... at the host-to-host layer of the TCP/IP model. If the host-to-host protocol is TCP, the matching functionality is found in the OSI transport and session layers (4 and 5). Using UDP equates to the...

Ngày tải lên: 24/01/2014, 09:20

... best IM:Type full time IM:Title the godfather Other the, in, that Other the, in, that Other the, in, that Table 3: Label sets and their respective query segment examples for the intent class Movie, Job ... identify the semantic labels of IMs, i.e., the attribute names they implicitly refer to. We use A c to denote the set of IM semantic labels for the intent class c. Other Additionally, there can ... of the above query, representing the essential information the user intends to obtain. Furthermore, there are two IMs, “alice in wonderland” and “2010”, serving as filters of the information the...

Ngày tải lên: 20/02/2014, 04:20

... object x. is the FFP functional 'fetch' DD is the definition store of the MMU CD is the definition store of the CPU # is the result of an unsuccesful search mapply is the apply mechanism ... mechanism of the MMU The execution of a primitive (i.e. a granuuar) represents a recursive call to the monitor M, modulo the different function of the control interpreter (the CPU). For the rest, ... from the start, Unix has been conceived as a functional architecture. What the user sees is externally defined, being the result of applying the Unix kernel to a shell program. Furthermore, the...

Ngày tải lên: 08/03/2014, 18:20

... the issue decreases the probability of default. The choice of the conversion ratio needs to solve a trade-off: on the one hand, the higher the conversion ratio, the lower the probability of ... unchanged, and only the sharing rule for these cash flows has changed, so that the total value of the firm is unchanged (following the Modigliani-Miller theorem). Because the value of the claims that ... participate in the plan. If they participated, their identity would be revealed and their assets would be valued at their true, low level J(A L ). This would further increase the cost of their financial...

Ngày tải lên: 15/03/2014, 10:20

Ngày tải lên: 18/03/2014, 12:20

... specific driver. The book describes the official 2.6.11 version of the Linux kernel, which can be downloaded from the web site http://www .kernel. org. Be aware that most distributions of GNU /Linux modify the ... about the current state of the process. When the kernel stops the execution of a process, it saves the current contents of several processor registers in the process descriptor. These include: ã The ... 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...

Ngày tải lên: 19/03/2014, 13:36

... understand that the success or failure of the enterprise depends on the dedication and enthusiasm of the employees because they are thrust to the enterprise forward. The business strategy of the next ... image affect the progress of production and consumption of the business. Therefore, analysis of the proportion of inventories over the period will evaluate the reasonableness of the reserves. ... sale In the above criteria, the target rate of return of assets is an indicator to reflect the total merged. It represents a synthesis influence the outcome of the research targets. The profitability...

Ngày tải lên: 22/03/2014, 11:20

... position rela- tive to the other words in the sentence. Once a word is entered in the network, the system assigns all of the possible roles the words can have by applying the lexical constraints ... allowing the word to modify all the remaining words in the sentence or no words at all. Each of the arcs in the network has associated with it a matrix whose row and column indices are the roles ... that the words can play in the sentence. Initially, all entries in the matrices are set to one, indicat- ing that there is nothing about one word's func- tion which prohibits another...

Ngày tải lên: 23/03/2014, 20:20

Ngày tải lên: 30/03/2014, 08:20

Ngày tải lên: 18/06/2014, 19:20

Ngày tải lên: 20/06/2014, 08:20

Ngày tải lên: 20/06/2014, 23:20