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Forum: Kernel

Request help with Linux kernel compilation, theory, programming, or other kernel related issues

  1. How to transmit a whole file by source-code to USB drive

    Hi guys, I want to find a simple and quick way to permit my application to bring a file located in my file system and write it into an external...

    Started by s1rUK, 06-01-2010
    • Replies: 7
    • Views: 1,083
    06-02-2010 Go to last post
  2. tty device and tty subsystem - read syscall blocks

    Hi all, I wrote a kernel module and implemented an tty device. Now I reached the testing phase and realized that the read syscall blocks...

    Started by otix, 05-30-2010
    • Replies: 3
    • Views: 1,420
    06-02-2010 Go to last post
  3. Device Driver - failed to open

    Hi, I am new to developing Linux device drivers. I have written a virtual device driver (char driver). After inserting its module (by insmod) I...

    Started by yalakvar, 06-01-2010
    • Replies: 1
    • Views: 1,735
    06-02-2010 Go to last post
  4. crash when read/write mapped io registers

    Hi, I am using mmap() in user space to access SPI registers in the OMAP3530. The physical address is 0x48098000 (OMAP_MCSPI1_BASE) which is...

    Started by torrance2461, 05-26-2010
    • Replies: 1
    • Views: 2,235
    06-02-2010 Go to last post
  5. Shared library partially getting invoked

    Hi, I am using libfaketime preload library available from code-wizards website for faking system time on CentOS 4.6, Kernel 2.6.9 with Java 6...

    Started by hbajaj, 05-31-2010
    • Replies: 0
    • Views: 813
    05-31-2010 Go to last post
  6. Scheduling priority in Work Queues

    Hi all. I am modifying mac layer code for 802.11 radios to try and implement my own channel selection mechanism for mesh mode. I am struck with...

    Started by bhargava_07, 05-29-2010
    • Replies: 0
    • Views: 2,717
    05-29-2010 Go to last post
  7. Backlight Control 2.6.28.xxx Gone In 2.6.30.xxx

    Hi! I found out why the command xrandr --output LVDS --set BACKLIGHT_CONTROL native works and helps me adjust brightness control of my...

    Started by nujinini, 05-28-2010
    • Replies: 0
    • Views: 1,404
    05-28-2010 Go to last post
  8. Perfermance counter

    Hello everyone I'm working on the perfermance counters on Linux to get the perfermance of a computaional fluid dynamics software and I have a...

    Started by obbo, 05-27-2010
    • Replies: 0
    • Views: 851
    05-27-2010 Go to last post
  9. Can't control SPI_CS_HIGH

    Hi, I am running Linux on Omap 3530. I have a development kit from LogicPD (LV SOM). I need to use /dev/spidev3.0. I followed the test code in ...

    Started by torrance2461, 05-26-2010
    • Replies: 0
    • Views: 1,609
    05-26-2010 Go to last post
  10. Probable overhead of using a shared library

    Hi, I found a very strange thing when I linked my executable with a shared library. That is the executable only references a small function of the...

    Started by Dongping84, 05-25-2010
    • Replies: 5
    • Views: 2,301
    05-26-2010 Go to last post
  11. Question lookup_bdev function ,

    Hi, i'm trying to write a code, which checks if a block device exists or not. I wrote the following code #include <linux/kernel.h> #include...

    Started by Dufresne, 05-26-2010
    • Replies: 0
    • Views: 1,578
    05-26-2010 Go to last post
  12. Help with Netlink kernel changes

    I'm in the process of porting my kernel module from a 2.6.10 kernel to a 2.6.25.5 kernel. I thought it would be fairly simple until I hit the netlink...

    Started by bobb8915, 11-25-2008
    • Replies: 1
    • Views: 1,285
    05-24-2010 Go to last post
  13. Сipher and deciphering files in kernel

    Hello. I want to make a transparent ciphering of files in kernel space. Some file on disk may by ciphered but with help of my kernel module when...

    Started by TheProger, 05-23-2010
    • Replies: 1
    • Views: 722
    05-24-2010 Go to last post
  14. How read/write requests are dispatched to the ramdisk driver

    Hi, I am trying to measure the performance of ramdisk (size is 2GB) on a Nehalem based system (with CentOS5.4) with 4GRam. It looks like I get...

    Started by ramu_oc, 05-19-2010
    • Replies: 3
    • Views: 1,047
    05-22-2010 Go to last post
  15. Question Kernel Module - Packet Capture/Send And Packet Creation/Send

    Hi, I am currently working on a kernel module that uses a netfilter hook on out-going packets from the machine. I can currently load the module...

    Started by tyman475, 05-20-2010
    • Replies: 0
    • Views: 3,164
    05-20-2010 Go to last post
  16. How to assign kernel space to user space

    Hi, recently I have come across a question, how can we allocate a part of kernel space to user space. I have understood that we have use mmap()...

    Started by maheshgupta024, 05-20-2010
    • Replies: 0
    • Views: 689
    05-20-2010 Go to last post
  17. kernel stopped sending network packets after first one..

    Hi all I've issue where Kernel stopped sending network packets to driver after very first one, I'm sure its something I've done or not done in...

    Started by ayewin, 05-19-2010
    • Replies: 1
    • Views: 842
    05-19-2010 Go to last post
  18. problem: kdump and kexec

    I have spent about 7 days to find out that the crash reports is stored in /var/crash for Ubuntu. So now I don't think Ubuntu is suitable for me to...

    Started by wolaile, 05-17-2010
    • Replies: 2
    • Views: 1,140
    05-18-2010 Go to last post
  19. Kernel crashed, but no oops information!

    I have tried for several days, and I have googled hard, but I can't find the results. So now let me describe my problem as follows: I have...

    Started by wolaile, 05-16-2010
    2 Pages
    1 2
    • Replies: 12
    • Views: 2,284
    05-18-2010 Go to last post
  20. Registering with the USB HID CLASS Driver

    Hi All, I've a typical requirement for presenter hid device. ============= User Space ____________________________

    Started by sunilpillai_stg, 05-17-2010
    • Replies: 0
    • Views: 2,084
    05-17-2010 Go to last post

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