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Forum: Kernel

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

  1. Exclamation How to disable software interrupts?

    On Intel x86 Kernel, local_bh_disable() is not effective for disabling software interrupts, when CONFIG_PREEMPT_HARDIRQS is enabled....

    Started by Ponyo3, 02-18-2010
    • Replies: 0
    • Views: 2,301
    02-18-2010 Go to last post
  2. imx51 - babbage - spidev driver problem - SCLK not generated

    Hi folks, For my project requirement, we are trying to use the spi in user space. In imx51, it is connected to the NOR device. I enabled the...

    Started by linux_pn, 02-16-2010
    • Replies: 1
    • Views: 2,245
    02-16-2010 Go to last post
  3. udp packets cause kernel oops in ip_push_pending_frames linux

    I have a kernel module that uses netfilter to catch the packets at NF_IP_LOCAL_OUT hook.These are udp packets which encapsulate tcp packets withing...

    Started by bugsmakemylifehell, 02-15-2010
    • Replies: 3
    • Views: 1,076
    02-16-2010 Go to last post
  4. How to make thread nicer

    Hi! Kernel: System: Embedded System I have a process and two threads running in it. Thread1 is my GUI-Thread (using FLTK) and Thread2...

    Started by Michi21609, 02-16-2010
    • Replies: 0
    • Views: 856
    02-16-2010 Go to last post
  5. Interrupt Handler problem in DEvice DRiver

    FOr some reason, my interrupt in not getting generated in my kernel code of device drivers. interrupt is generated when the buffer is drained. anyone...

    Started by ngandhi, 02-14-2010
    • Replies: 0
    • Views: 760
    02-14-2010 Go to last post
  6. Core dumping a kernel module

    Hi everyone, This may be somewhat of a newb question but I"m having trouble finding documentation for it so I thought I'd ask. I'm using a...

    Started by glitch83, 02-12-2010
    • Replies: 0
    • Views: 635
    02-12-2010 Go to last post
  7. Converting a device driver for real time kernel

    What is the best way of converting an existing device driver to work under a real-time kernel? A device driver provided for a special serial card...

    Started by aleggo, 02-09-2010
    • Replies: 3
    • Views: 1,819
    02-11-2010 Go to last post
  8. need time functions for powerPC kernel module

    Anyone know of any 'wrappers' for the primitives in linux/asm-powerpc? This is for calculating elapsed real-time on an embedded Linux kernel...

    Started by douglaskbell, 02-01-2010
    • Replies: 1
    • Views: 924
    02-11-2010 Go to last post
  9. PPC440epx boot problem

    I am using linux kernel I encounter 2 problems: 1. After console_init() is called inside start_kernel(), the console starts printing...

    Started by awang5907, 11-30-2009
    • Replies: 4
    • Views: 1,104
    02-11-2010 Go to last post
  10. kernel headers

    hello am using fedora 12 . i have installed kernel-devel package but still the kernel headers are not available at /lib/moudles/2.6.31.***/build: ...

    Started by rakeshkumar, 02-09-2010
    • Replies: 5
    • Views: 1,943
    02-11-2010 Go to last post
  11. Red face finding unix datagram queue in kernel

    hi all.. I need to reverse the order of recvfrom() (userspace) command (turning the packet queue to a stack or something like that) meaning: if...

    Started by biobizz, 02-09-2010
    • Replies: 3
    • Views: 930
    02-10-2010 Go to last post
  12. kernel socket clos and re-opened - how to?

    We have an embedded kernel module that opens a listening socket, and then calls accept() and establishes a connection, then the far end closes the...

    Started by douglaskbell, 02-10-2010
    • Replies: 0
    • Views: 650
    02-10-2010 Go to last post
  13. Need help with compiled kernel

    I have tried compiling my own kernel, version from I ran a defconfig and then selected options from menuconfig. After compiling...

    Started by CrystalKaeru, 02-10-2010
    • Replies: 0
    • Views: 625
    02-10-2010 Go to last post
  14. irq_disable

    irq_disable is causing trouble to my kernel code. How do you suggest to tackle it? it hangs the code....

    Started by ngandhi, 02-09-2010
    • Replies: 1
    • Views: 1,933
    02-09-2010 Go to last post
  15. what does this error mean? new one

    Kernel Module is in use.... what does it mean when the compiler gives this error and what causes the error?

    Started by ngandhi, 02-09-2010
    • Replies: 5
    • Views: 744
    02-09-2010 Go to last post
  16. Global variables in multi-file device driver

    Hi, I am writing a Linux Device driver for 2.6 kernel (for the first time). There is plenty of code so I decided to split it into 2 files. I have...

    Started by agaurav, 02-08-2010
    • Replies: 2
    • Views: 1,729
    02-09-2010 Go to last post
  17. what does this error mean?

    kernel module does not exist.... what does this error message mean? I have to reboot everytime I get this and the error goes away. I am lookin for a...

    Started by ngandhi, 02-08-2010
    • Replies: 1
    • Views: 755
    02-09-2010 Go to last post
  18. device driver - problem while reading cascaded symlinks

    Hello I have a strange problem with a device driver. Let me describe the problem: There is symlink, L1 and it shows another symlink, L2 and L2...

    Started by xyzt, 02-08-2010
    • Replies: 0
    • Views: 797
    02-08-2010 Go to last post
  19. networking functions not in kernel

    select() and shutdown() and SOCK_NOBLOCK don't compile in a kernel module build. Are they renamed?

    Started by douglaskbell, 02-06-2010
    • Replies: 6
    • Views: 972
    02-08-2010 Go to last post
  20. Lightbulb How the first console driver output text to monitor?

    Hi, All: How the first console driver output text to monitor? How could the DUMMY vga_con.con_putcs() realize the output? ...

    Started by gfz2004xy, 02-08-2010
    • Replies: 0
    • Views: 1,028
    02-08-2010 Go to last post

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