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Forum: Kernel

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

  1. Build Error while kernel port ( 3.14 to 3.10)

    I am having 3.14 working kernel for my imx6,i want to port 3.10 to imx6 , during the build process i am getting the following error, and am i stuck,...

    Started by michealscott, 07-28-2016
    • Replies: 0
    • Views: 732
    07-28-2016 Go to last post
  2. IOCTL locking kernel on Xeon E3-1270 v5

    Has anyone experienced an issue with a system lock up when using IOWR with IOCTL on an Intel Xeon E3-1270 CPU? I have 3 different distributions...

    Started by SignoEleven, 07-26-2016
    • Replies: 1
    • Views: 505
    07-26-2016 Go to last post
  3. File Descriptor information question

    Hi, I was wondering, say I want to implement a system call. This system call takes as input parameter the file descriptor. How would I get the...

    Started by quantumlight, 07-18-2016
    • Replies: 0
    • Views: 651
    07-18-2016 Go to last post
  4. Linux process exit() cleanup question

    I was wondering, if I have a program like this: #include <stdio.h> void main() { printf("Hello World"); }

    Started by quantumlight, 07-17-2016
    • Replies: 4
    • Views: 459
    07-17-2016 Go to last post
  5. mm_struct RSS Counters

    I am trying to copy page table entries to a fresh virtual memory addresses. But I get bad RSS Counter warning for data larger than few mega bytes....

    Started by shankur90, 06-23-2016
    • Replies: 3
    • Views: 1,028
    06-27-2016 Go to last post
  6. Linux kernel time mangement

    delete please

    Started by mappa, 06-23-2016
    • Replies: 0
    • Views: 317
    06-23-2016 Go to last post
  7. Insertion order affects USB devices

    I am using Linux 3.0.1 on an arm9board OK6410-BH. I have a USB encrypted memory stick and associated token. If I insert the encrypted memory stick...

    Started by DavidAL, 06-21-2016
    • Replies: 3
    • Views: 533
    06-21-2016 Go to last post
  8. Linux kernel character drivers (kernel module)

    Hi dear community, I am trying to dive into kernel drivers in order to understand how does low level stuff works. I will describe how I...

    Started by Nitup, 06-13-2016
    • Replies: 0
    • Views: 398
    06-13-2016 Go to last post
  9. Virtual/Soft PCI Device

    Hello, I'm developing hardware and have a software simulation for the hardware. To test this software simulation "in situ", I'm wondering if...

    Started by cubeleo, 02-05-2014
    • Replies: 4
    • Views: 1,327
    06-10-2016 Go to last post
  10. The GNU vision and the Linux kernel

    Hello, I've been reading up on the history of GNU, the Hurd kernel and the Linux kernel. I find it all pretty fascinating. What I'm wondering...

    Started by sunnybubblegum, 06-03-2016
    • Replies: 3
    • Views: 833
    06-04-2016 Go to last post
  11. Question API Design for "find_prev_bit"

    Background The Linux Kernel API has a find_next_bit API that finds the first set bit in a memory region at or after a given offset: /** *...

    Started by hansonchar, 05-20-2016
    • Replies: 0
    • Views: 668
    05-20-2016 Go to last post
  12. Issue with Block Group Descriptor Table replicas in ext3 file system

    Hi, As you know, the block group descriptor table is replicated in various block groups starting from first block group. But the file system...

    Started by anoopss, 03-30-2016
    • Replies: 2
    • Views: 858
    05-18-2016 Go to last post
  13. switch_root with systemd: "Too many levels of symbolic links"

    I'm trying to boot a proprietary kernel build and OS after an upgrade to libc and numerous other tools. I'm booting using an initramfs in the 3.2.0...

    Started by Gatica, 04-07-2016
    • Replies: 3
    • Views: 1,007
    05-18-2016 Go to last post
  14. What's the exact purpose of synchronize_net function?

    Can anybody please tell me, what exactly does synchronize_net() function do in LINUX? More specifically, what's the effect of this function if I run...

    Started by Mark1981, 04-30-2016
    • Replies: 1
    • Views: 665
    05-18-2016 Go to last post
  15. Question To const, or not to const?

    Hi, I have a quick/trivial C question and hope the kernel developers don't mind sharing their opinions: Is the use of the const qualifier for...

    Started by hansonchar, 05-11-2016
    • Replies: 1
    • Views: 565
    05-11-2016 Go to last post
  16. Question Force power on state after resume

    Hello, I'm working on embedded Linux for Amlogic ARMv8 platform (3.14.y kernel). Kernel itself is 'android' kernel. I'm having problems...

    Started by Stane1983, 03-22-2016
    • Replies: 2
    • Views: 812
    03-25-2016 Go to last post
  17. Direct syscall of process_vm_readv returns ENOSYS in 3.14 kernel

    Hi, I need to use process_vm_readv/process_vm_writev in my product (why is beyond the scope of this thread) and these system calls are returning...

    Started by meyery, 03-24-2016
    • Replies: 1
    • Views: 462
    03-24-2016 Go to last post
  18. Kernel threads vs. user threads implementation (kthreads vs. pthreads)

    I am cross posting this from Stack Overflow to see if anyone can explain this to me. The post was rather long so I'll just post an excerpt and put...

    Started by cybershark5886, 01-23-2016
    • Replies: 1
    • Views: 1,844
    02-07-2016 Go to last post
  19. deleting a big file on "ext3" takes a long time

    The partition where I keep movies is formatted with "ext3". I noticed many times that deleting a file of size > 10 GB takes from 10 to 100 seconds. I...

    Started by beroal, 01-19-2016
    • Replies: 1
    • Views: 619
    01-20-2016 Go to last post
  20. Explore btrfs with UML

    Hi, I want to explore (debug) Btrfs with UML so I compile UML from source code linux 4.3 with btrfs enable. Then I try to run ddd (gdb) with UML...

    Started by nguyentl, 12-14-2015
    • Replies: 2
    • Views: 1,128
    01-07-2016 Go to last post

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