Kernel: Linux / Windows

- Monolithic Kernel vs Micro Kernel

http://www.vmars.tuwien.ac.at/courses/akti12/journal/04ss/article_04ss_Roch.pdf

http://en.wikipedia.org/wiki/Kernel_(computing)

http://linuxhelp.blogspot.com/2006/05/monolithic-kernel-vs-microkernel-which.html

- Korean

http://blog.naver.com/PostView.nhn?blogId=sdc4697&logNo=140103690630&redirect=Dlog&widgetTypeCall=true

http://recipes.egloos.com/5365126

http://itislord.tistory.com/tag/%EB%AA%A8%EB%86%80%EB%A6%AC%EB%94%95%20%EC%BB%A4%EB%84%90%28Monolithic%29

- Windows

http://www.driveronline.org/bbs/view.asp?tb=systembbs&GotoPage=1&s_bulu=&s_key=&no=24

http://keon.egloos.com/5202360

http://www.osnews.com/story/22501/Microsoft_Kernel_Engineers_Talk_About_Windows_7_s_Kernel

- Kernel comparision Linux vs Windows

http://widefox.pbworks.com/w/page/8042308/Kernel%20Comparison%20Linux%20vs%20Windows

http://widefox.pbworks.com/w/page/8042290/Architecture

http://jnux.tistory.com/entry/%EC%8A%A4%ED%81%AC%EB%9E%A9-%EB%AA%A8%EB%B0%94%EC%9D%BC-%ED%94%8C%EB%9E%AB%ED%8F%BC%EA%B3%BC-%EB%AA%A8%EB%B0%94%EC%9D%BC-OS%EC%9D%98-%EC%B0%A8%EC%9D%B4

http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=%EC%9C%88%EB%8F%84%EC%9A%B0+%EC%BB%A4%EB%84%90%EA%B3%BC+%EB%A6%AC%EB%88%85%EC%8A%A4+%EC%BB%A4%EB%84%90%EC%9D%98+%EC%B0%A8%EC%9D%B4

OneNand, iNand, and MobiNand

Korean

http://search.naver.com/search.naver?where=nexearch&query=%EC%95%84%EC%9D%B4%EB%82%B8%EB%93%9C+%EB%AA%A8%EB%B9%84%EB%82%B8%EB%93%9C&x=0&y=0&sm=top_hty&fbm=0&ie=utf8

http://gall.dcinside.com/list.php?id=smartphone&no=1437467

1. MLC (Multi Level Cell) / SLC (Single Level Cell)

http://www.navinside.com/bbs/zboard.php?id=forum_istation&no=3359

1.1 MLC type: MoviNand and iNand (same type)

1.2 SLC type: OneNand

2.1 Diff. between MoviNand and iNand

http://people.sarang.net/?document_srl=1104294

http://blog.naver.com/PostView.nhn?blogId=mercurian21&logNo=30047740523

자양이네 (ps3, 타블렛, 리눅스, 안드로이드)

갤럭시s의 oneNAND, moviNAND의 포맷및 파티션 변경

http://blog.naver.com/dowkim10?Redirect=Log&logNo=120119813742

갤럭시 s의 파티션 및 파일 시스템 (rfs/ext2/ext3/ext4)

http://blog.naver.com/dowkim10?Redirect=Log&logNo=120119813742

Samsung Galaxy S Series

http://forum.xda-developers.com/wiki/index.php?title=Samsung_Galaxy_S_Series

RFS

http://www.samsung.com/global/business/semiconductor/products/fusionmemory/Products_RFS_Brochure.html

http://movitool.ntd.homelinux.org/trac/movitool/wiki/RFS

http://www.samsungmomentforum.com/samsung-moment-rooting/bml151617-yaffs2!/

In the Linux, build error logging

3.6.4 Redirecting Standard Output and Standard Error

This construct allows both the standard output (file descriptor 1) and the standard error output (file descriptor 2) to be redirected to the file whose name is the expansion of word.

There are two formats for redirecting standard output and standard error:

&>word

and

>&word

Of the two forms, the first is preferred. This is semantically equivalent to

>word 2>&1

case #1

# make flag 2&> build.log

case #2

# make flag > build.log 2>&1

How do I capture all of my compiler's output to a file?

C language, Tips

1. Maximal munch rule (최대한 잘라먹기 규칙)

x+++++y is

((x++)++) + y

2. Floating Point Arithmetic (부동 소수점 연산)

David Goldberg, "What Every Computer Scientist Should Know About Floating-Point Arithmetic," March 1991, ACM Computing Surveys, Vol. 21, No. 1

IEEE 754

IEEE 854

3. Declaration specifier (선언 지정자)

선언 지정자에 나열되는 순서는 상관이 없음

그러나 아래와 같은 방법을 추천함

기억부류 지정자 형한정어 형지정자

static const volatile char

#define MY_DEFINE 0

void main(void)

{

#if defined(MY_DEFINE)

printf("Yes, defined.\r\n");

#else

printf("No, undefined.\r\n");

#endif // MY_DEFINE

}

output> Yes, defined.

Enabling XDMCP in Ubuntu 11.04

XDMCP is X Display Manager Control Protocol

1. install xdm

(If you installed xdm before, pass this step)

#apt-get install xdm

2. Edit /etc/gdm/custom.conf as follow: (If custom.conf is not exist, make it)

#vim /etc/dgm/custom.conf

[daemon]

User=gdm
Group=gdm

[security]
DisallowTCP=true

[xdmcp]
Enable=true
DisplaysPerHost=2
HonorIndirect=false
MaxPending=4
MaxSessions=16
MaxWait=30
MaxWaitIndirect=30
PingIntervalSeconds=60
Port=177

[greeter]

[chooser]
Multicast=false

[debug]
Enable=false

3. restart gdm or restart linux

http://happybruce.tistory.com/827

http://ubuntuforums.org/showthread.php?t=1471703

Calling Convention

X86 calling conventions

http://en.wikipedia.org/wiki/X86_calling_conventions

Argument Passing and Naming Conventions (C++)

http://msdn.microsoft.com/en-us/library/984x0h58(v=VS.71).aspx

- The following calling conventions are supported by the Visual C/C++ compiler.

1. cdecl: stack cleanup (caller), parameter passing (stack, right to left)

2. stdcall: stack cleanup (callee), parameter passing (stack, right to left)

3. fastcall: stack cleanup (callee), parameter passing (stored in register, then pushed on stack)

Video Tutorial - Calling Conventions

http://www.vivid-abstractions.net/programming/tutorials/video-tutorial-calling-conventions/

Linux: likely & unlikely

In the Linux,
You can see the below code

if ( likely(x == 0) )
{
// code ...
}
or
if ( unlikely(x == 1) )
{
// code ...
}

#define likely(x) __builtin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)


As I know, its another expression is "Branch Prediction".
It is supported gcc 2.96 or later version.

likely/unlikely macros in the Linux kernel
http://stackoverflow.com/questions/109710/likely-unlikely-macros-in-the-linux-kernel

Kernel : likely/unlikely macros
http://kerneltrap.org/node/4705

from thunderbird to outlook express

Web Site

How to Export Mail from Thunderbird to Outlook Express and Other Email Programs

http://email.about.com/od/mozillathunderbirdtips/qt/et_export_to_oe.htm

Tools

IMAPSize

http://www.broobles.com/imapsize/

tbird2oe

http://download.cnet.com/Tbird2OE/3000-2369_4-10601979.html

Aid4Mail MBOX Converter (My Choice!)

http://www.aid4mail.com/mbox-converter.php

DIGITAL BY QUALCOMM

From the google, I got information,

Qualcomm has its own patent of CDMA technology.

Samsung - Digital by Qualcomm?

http://www.howardforums.com/showthread.php/5508-Samsung-Digital-by-Qualcomm

Linux: Current Frequency

How to read cpu frequency on android device
http://stackoverflow.com/questions/3021054/how-to-read-cpu-frequency-on-android-device

How to detect android cpu speed?
http://stackoverflow.com/questions/4875415/how-to-detect-android-cpu-speed

Linux: CPU scaling governor

Governors In the Linux Kernel

1 Performance

2 Powersave

3 Userspace

4 Ondemand

5 Conservative

6 Interactive

7 InteractiveX

CPU frequency and voltage scaling code in the Linux(TM) kernel

http://bonsai.googlecode.com/svn-history/r447/trunk/kernel-src/linux-2.6.32.9/Documentation/cpu-freq/governors.txt

CPU Frequency Governor

http://icarus21.tistory.com/entry/CPU-Frequency-Governor

# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

For all available scaling governors:

# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors

Check Available frequencies
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies

To control CPU1 manually,
# echo 0 > /sys/devices/system/cpu/cpu1/online
# echo 1 > /sys/devices/system/cpu/cpu1/online


Update 6/28 2013
=============================================
CPU Governors
http://forum.xda-developers.com/showthread.php?t=1736168

Linux: DVFS & hotplug

Web:

- Linux kernel CPU Frequency 변경(DVFS) 코드

PDF:

- DVFS와 파워 게이팅의 결합 통한 절전 성능 향상

- 그린 데이터센터를 위한 전력 관리 기술

- DVFS and power-off controls on a multicore operating system by Renesas

How to debug in Release Mode in Visual C++ 6.0

Project > Setting > C/C++ tab menu

Debug Info: change from None to Program database

And, Project > Setting > Link

Check, Generate debug info