Everything about UNIX kernels: development, configuration, compilation, design, etc.
3
votes
1answer
47 views
How do you empty the buffers and cache on a Linux system?
Prior to doing some benchmarking work how would one free up the memory (RAM) that the Linux Kernel is consuming for its buffers and cache?
4
votes
1answer
60 views
Timescales of any task in linux kernel?
I am studying how Linux kernel works and getting interested in the timescale of anything that happens in the kernel.
Of course I know it depends on the HW, but would like to get an example.
For ...
1
vote
1answer
335 views
Problems when booting with new 3.7.2 kernel on Linux Mint 14
When I updated to the new Kernel 3.7.2, everything goes ok, but when it comes to powering on Linux Mint, it shows me two warnings:
What's wrong and what can I do?
0
votes
0answers
20 views
Linux distro with PREEMPT_RT patch
I want to know if there is any Linux distribution with PREEMPT_RT kernel patch?
If not, is there any good tutorial on how to patch and compile a kernel with RT patch and how can I create kind of a ...
0
votes
0answers
7 views
alternative firmware (kernel or bootloader) for ebookreader bookeen odyssey
I'm seeking an alternative distribution or firmware for ebook-readers like openinkpot. I have a Bookeen Odyssey and my intention is to change the firmware.
If no alternative firmware exists is there ...
0
votes
0answers
23 views
Virtual address of Global variables in Kernel code
If my understanding is not wrong, every process has a Kernel Address space associated with it (which is typically 1GB). As far as local variables are concerned, they are assigned on the kernel stack ...
15
votes
5answers
3k views
What is the difference between kernel drivers and kernel modules?
When I do a lspci -k on my Kubuntu with a 3.2.0-29-generic kernel I can see something like this:
01:00.0 VGA compatible controller: NVIDIA Corporation G86 [Quadro NVS 290] (rev a1)
Subsystem: ...
1
vote
2answers
85 views
How to build my own kernel ? Where should I start? [on hold]
I have completed my graduation recently. And I have only basic knowledge in C. But I would like to work on the Linux Kernel, and customize it according to my needs. Not only customize I would also ...
0
votes
0answers
106 views
kernel patch for microphones on Apple macbook Air 1,1 (Early 2008)
I'm running Ubuntu 12,04 on an mba. I can't make the microphones (neither external nor internal) work.
It seems there is a problem with Linux kernel trying to decipher Apple (intentionally) corrupted ...
-1
votes
0answers
37 views
How or where can I download the entire Linux 3.11 kernel?
I want to go through it and make adjustments.
2
votes
2answers
16 views
busybox initramfs loop mount
I'm trying to loop mount my root filesystem (a loop file) within a busybox initramfs.
I try to run the command:
mount /rootfs.raw /root
... which works on my Ubuntu laptop, however, I simply get
...
9
votes
1answer
157 views
What is difference between User space and Kernel space?
Is Kernel space used when Kernel is executing on the behalf of the user program i.e. System Call? Or is it the address space for all the Kernel threads (for example scheduler)?
If it is the first ...
0
votes
1answer
51 views
Kernel Panic after Fedora 19 Update
After installing updates on Fedora 19 (kernel 10.3.7-200.fc19.x86_64) the DE freezes whenever I log in. Using the virtual consoles doesn't work.
One time I even got this kernel panic:
...
2
votes
1answer
219 views
Scaling issues of i7 3520M with intel_pstate module on Kernel 3.10.0
Few days ago I updated my openSUSE 12.3 system from Kernel 3.9.8-1.gf3348a8-desktop to 3.10.0-1.g3dcd746-desktop and since then, turbo mode of my i7 3520M is enabled by default and it does not ...
10
votes
2answers
156 views
Locate occasional CPU kernel hog
I have a 2.6.35 PREEMPT kernel running on moderate-speed ARMv7 processor. About once every 100 - 125s, something causes the kernel to fail to process some audio-related drivers sufficiently quickly to ...
