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Threads 1221 to 1240 of 3530

Forum: Kernel

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

  1. Need for put_user/get_user

    Can someone give a a definitive reason why my custom system call needs to use put_user/get_user? I'm specifically worried about x86 I've read all...

    Started by ejd027, 03-25-2010
    • Replies: 0
    • Views: 2,272
    03-25-2010 Go to last post
  2. How to test my usb skeketon driver

    So now I have a driver similar to usb-skeleton.c.But I dont know how to remove the previous usb-storage module to test my new module on my usb drive....

    Started by saurabh.nigam, 03-23-2010
    • Replies: 5
    • Views: 3,347
    03-24-2010 Go to last post
  3. Smile Kernel Module

    Hello everyone, I am writing a very simple kernel module that is available on the net. But while compiling it I am getting the error for include...

    Started by rtlab, 03-16-2010
    • Replies: 5
    • Views: 676
    03-23-2010 Go to last post
  4. how is atoi() done in the kernel?

    So, atoi is not in the kernel. Is there a workaround?

    Started by douglaskbell, 03-16-2010
    • Replies: 4
    • Views: 10,496
    03-22-2010 Go to last post
  5. Debugging linux kernel GDB & JTAG

    Hello, I am using an MPU LPC3250 (ARM926EJ-S). To this I do have an JTAG connected that works as an GDB server. The board I am using is Phytec...

    Started by Doofus, 03-08-2010
    • Replies: 1
    • Views: 2,494
    03-15-2010 Go to last post
  6. MMC driver question

    I need to force the MMC driver to do a card detect from userland. Any suggestions on how to add an exposed interface?

    Started by mrsinger, 03-14-2010
    • Replies: 0
    • Views: 654
    03-14-2010 Go to last post
  7. Blackstart Screen

    Hello, When I start my patched kernel from Ubuntu/Grub I get only a blackscreen. I get no messages about the system state. Is it possible to force...

    Started by flam, 03-08-2010
    • Replies: 8
    • Views: 1,225
    03-13-2010 Go to last post
  8. bitops.h inline and extern has different names

    Hi all! I'm writing a LKM for my ARM/Linux 2.4.27 based server. I have downloaded the matching kernel code and also built my own armv5b GCC...

    Started by matska, 03-08-2010
    • Replies: 2
    • Views: 812
    03-12-2010 Go to last post
  9. Driver and IOCTL

    Hi, I have two queries related to driver and IOCTL.... 1. What is the difference between user space driver and kernel space driver 2. Can we...

    Started by kulkarnispavan, 07-23-2009
    • Replies: 3
    • Views: 3,372
    03-11-2010 Go to last post
  10. Exclamation Linux kernel 2.6.32 failed to fork() in LTP test msgctl11. Any ideas?

    System: ARM11, total memory is 240956K, Linux kernel 2.6.32. Problem: LTP test msgctl11 failed to fork() in Linux kernel 2.6.32 with the...

    Started by bigwood, 03-10-2010
    • Replies: 0
    • Views: 1,908
    03-10-2010 Go to last post
  11. VmRSS increases but VmData does not

    I have written one sample code where I allocate memory and then free it. What I observed was whenever allocation was done, VmData is increased....

    Started by pmurthy, 03-10-2010
    • Replies: 0
    • Views: 2,939
    03-10-2010 Go to last post
  12. Understanding /proc/diskstats...

    Hello, I am trying to understand the figures in /proc/diskstats but I seem to be missing something fundamental. I wanted to see the read and...

    Started by manemannen, 03-10-2010
    • Replies: 0
    • Views: 4,125
    03-10-2010 Go to last post
  13. Device driver programming

    hi, i have a homework, writing device driver for linux. i decided to write for my mp3 player , usb device. i really dont know where should i begin...

    Started by eladriels, 03-08-2010
    • Replies: 1
    • Views: 1,032
    03-08-2010 Go to last post
  14. [SOLVED] RTAI patched kernel compiling irq error

    Hello, I've a problem with compiling an patched kernel. I patched the kernel with rtai-3.8. To patch the kernel is no problem. But even I...

    Started by flam, 03-06-2010
    • Replies: 2
    • Views: 3,664
    03-08-2010 Go to last post
  15. Allocate and use DMA buffer

    Hi, I have a question about DMA buffers. I am writing a device driver which should use DMA transfer from device to host PC memory. I allocate a DMA...

    Started by orback, 03-08-2010
    • Replies: 0
    • Views: 1,663
    03-08-2010 Go to last post
  16. Building new Linux distribution.. where to go?

    Hey guys. I am looking forward to building a Linux distribution that is made extremely custom to my ideas of how an OS should run. (I have some...

    Started by LiteHacker, 03-05-2010
    • Replies: 6
    • Views: 14,978
    03-07-2010 Go to last post
  17. Question Safe to use Magic SysRq for shutdown?

    Is it safe to use the "REISUB" or similar sequence to shut down a system that has not crashed, if you need it shut off as fast as possible? My UPS...

    Started by HyperHacker, 03-05-2010
    • Replies: 0
    • Views: 926
    03-05-2010 Go to last post
  18. what is functionality of read_write.c

    i wanted to know the functionality of read_write.c and the system call vfs_write. are these used when we do a paste or ctrl-v or something like...

    Started by ramyayella, 03-05-2010
    • Replies: 3
    • Views: 1,082
    03-05-2010 Go to last post
  19. Post virtual filesystem

    Hi, I am working on virtual file system in the kernel, my requirement is I want add some more header information to the file when the data is...

    Started by bhanuprakash, 03-02-2010
    • Replies: 2
    • Views: 515
    03-05-2010 Go to last post
  20. USB mass storage disconnected randomly (due to EMI?).

    Hi all, This is my first post in this forum - I hope I am in the right place. Here is the issue that I am facing. On my computer (than runs...

    Started by julieng, 03-01-2010
    • Replies: 3
    • Views: 3,468
    03-04-2010 Go to last post

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