... some process, thekernel
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...
... address the segment, thekernel 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
UnderstandingtheLinuxKernel ... permanently
mapped by the kernel, and the "high memory," that is, the physical memory that is not
permanently mapped by the kernel.
UnderstandingtheLinuxKernel
26
1.6.4 Process...
...
/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...
... Understandingthe 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
theLinux 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 thekernel and is related to the kernel/ userspace split in the linear address space
marked by PAGE
OFFSET .The value, with the others, is stored...
... 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 thekernel ... the kernel. Although thekernel certainly is unique in many ways, at the end of
the day it is little different from any other large software project.
Obtaining theKernel Source
The current Linux ... Introduction to theLinux Kernel
As Linus and other kernel developers contribute to theLinux kernel, they decide how
best to advance Linux without neglecting its Unix roots (and, more important, the Unix...
... specific
driver.
The book describes the official 2.6.11 version of theLinux 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 thekernel 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...
... 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 thekernel ... is the leftmost node, the func-
www.it-ebooks.info
ptg
13
Building the Kernel
A number of files in the root of the source tree deserve mention .The file COPYING is
the kernel license (the ... Conversely, thekernel is concerned only with
the system calls; what library calls and applications make use of the system calls is not of
the kernel s concern. Nonetheless, it is important for the kernel...
... you to choose whether your tabbed panels simply display their
names, or if they include the panel’s icon as well. If the icon helps you to quickly
identify the panel then select the Show Tab Icons ... you prefer the unclut-
tered workspace of the default option then simply leave this option blank.
Fireworks MX adds the option of showing or hiding the icons next to the names of
the floating ... look like, rather than what you might have
named them. If you’d prefer to have the regular Fireworks icon applied to your PNG
files, rather than the default preview, then uncheck the Add Preview...
... 2001)
linux/ kernel
n The core kernel code.
n sched.c – the main kernel file”:
n scheduler, wait queues, timers, alarms, task queues.
n Process control:
n fork.c, exec.c, signal.c, exit.c etc…
n Kernel ... /usr/include /linux.
n Kernel- only portions guarded by #ifdefs
n #ifdef _ _KERNEL_ _
n /* kernel stuff */
n #endif
n Other directories:
n math-emu, net, pcmcia, scsi, video.
3
CS591 (Spring 2001)
Kernel Design ... 24
CS591 (Spring 2001)
The Kernel Symbol Table
n Symbols accessible to kernel- loadable modules
appear in /proc/ksyms.
n register_symtab registers a symbol table in
the kernel s main table.
n...
... nguyên hệ thống cho các người dùng
Kernel Modules
Trong những năm đầu của Linux, kernelLinux là một monolithic kernel. Monolithic kernel là tất cả các
dịch vụ của Kernel được biên dịch hết vào trong ... sự bất tiện
của nó. thế là modular Linuxkernel ra đời.
Modular Linuxkernel bao gồm một kernel tối tiểu và một tập các modules có thể được thêm vào khi
kernel đang chạy để hỗ trợ các thiết ... processor-specific kernel tận dụng hết tính năng của CPU
Các bước compile kernel
Cấu hình kernel
make config: Cấu hình kernel module từng dòng một tại console
make menuconfig: Cấu hình Kernel Modules theo...
... traceroute stops at Router2. Therefore, the problem is beyond the link between Router1 and Router2.
Cisco − Understandingthe Ping and Traceroute Commands
The Traceroute Command
The traceroute command ... router:
Cisco − Understandingthe Ping and Traceroute Commands
Cisco − Understandingthe Ping and Traceroute Commands
Understandingthe Ping and
Traceroute Commands
Introduction
The Ping Command
Why ... route to 20.0.0.0 in Router2.
The basic rule is that the pinged device should also know how to send the reply back to the source of the
ping.
Cisco − Understandingthe Ping and Traceroute Commands
...
... expression
if-then-else :
if [ <exp1> ] # include SPACEs
then
# what to do if the exp1 is true
elseif [ <exp2> ]
then
# what to do if the exp2 is true
else
fi
The Saigon CTT
... and #bg %job_id
The Saigon CTT
The
The
for
for
loop
loop
Syntax :
for <variable> in <list>
do
#list of commands to do
done
The Saigon CTT
The
The
while
while
... input the information into script
when executing the script ( interactive)
Commands :
read
select
The Saigon CTT
The Linux Shell
The Linux Shell
Shells : Bourne (sh), Bourne Again...
... kernel configuration tools
Recompile and install a kernel
Identify kernel modules
Configure LILO to use a new kernel
The Saigon CTT
Linux Kernel
The Saigon CTT
The Source Tree
The ... /usr/src /linux
# mkdir /usr/src /linux- 2.4.19-16
# tar xzfv linux- 2.4.19-16.tar.gz –C
/usr/src /linux- 2.4.19-16
The Saigon CTT
Preparing For The New Kernel
Preparing For The New Kernel
See ... precise
measurement of thekernel version. All patchs to
the kernel are cumulative. You simply have to
obtain and apply thelatest patch for thekernel to
be sure you have the most up-to-date...
... 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...
... slightly goofy—and their innocent exuberance on the beach quickly
endear them to us. They treat one another and the young woman they meet
with old-fashioned courtesy, and the wardrobe they lug about ... exercise: The dark youth does a som-
ersault or two and the fair one some sketchy calisthenics. Then, in perfect uni-
son, they stop, lift up the wardrobe, and begin to stagger up the beach.
Because the ... question of understanding; it’s a question of
believing.
Orpheus walks through the mirror with his hands in front of
him. The mirror shows the beginning of the Zone. Then the
mirror reflects the room...