Prabhu nath wrote:
But if the device has to generate an interrupt on the reception of the data
then it is best for the driver code to be in the kernel space waiting for
the data, rather than in the user space because there is no efficient
mechanism till now for the control to be transferred
Hi,
How to decode the stats thrown by the oom killer ? Is there any good
in depth documentation out there for this ?
Node 0 DMA per-cpu:
cpu 0 hot: high 0, batch 1 used:0
cpu 0 cold: high 0, batch 1 used:0
Node 0 DMA32 per-cpu:
cpu 0 hot: high 186, batch 31 used:25
cpu 0 cold: high 62, batch 15
Hi,
On Mon, May 13, 2013 at 9:52 PM, Matthias Brugger
matthias@gmail.com wrote:
El 13/05/2013 10:07, shampavman shampavman...@gmail.com va escriure:
Hi all,
Supposing i create a file of size 10K, it will occupy 2 blocks (4K each).
Now if i want to read only 1 block from it how can i
One that I know is through proc interface where the interrupt info is
lodged in a file in /proc and the user code keeps polling on this file.
Exact use of this is to be looked for.
On Tue, May 14, 2013 at 3:24 PM, Gergely Buday gbu...@gmail.com wrote:
Prabhu nath wrote:
But if the device
Hello,
I have an ARM platform board. I need to change the smp_affinity of PCIe
MSI interrupt. The drivers/pci/msi.c file does not any function for changing
the smp_affinity. Any pointers as to how to change the affinity would be very
helpful.
Regards,
Amit.
Hello,
I have an ARM platform board. I need to change the smp_affinity of PCIe
MSI interrupt. The drivers/pci/msi.c file does not any function for changing
the smp_affinity. Any pointers as to how to change the affinity would be very
helpful.
Regards,
Hi Neha
On 5/13/13, neha naik nehanai...@gmail.com wrote:
Hi,
I was under the impression that when the bio comes to a block device
driver its size is variable. But, after writing a block device driver i
realized that such is not the case and it always is 4096.
Your Filesystem block size
On May 13, 2013, at 9:52 PM, Gergely Buday gbu...@gmail.com wrote:
Hi there,
I learned, e.g. from here that user space device drivers are indeed possible:
http://www.makelinux.net/ldd3/chp-2-sect-9
Are there serious user space drivers in Linux? Could you name a few?
Or, is this just
On Mon, May 13, 2013 at 9:52 PM, Gergely Buday gbu...@gmail.com wrote:
Hi there,
I learned, e.g. from here that user space device drivers are indeed possible:
http://www.makelinux.net/ldd3/chp-2-sect-9
Are there serious user space drivers in Linux? Could you name a few?
UIO has lots of
Hello,
As far as I know, Wake On Lan is disabled by default in Linux.
Now I try this on p2p1:
ethtool -i p2p1
...
driver: r8169
...
ethtool p2p1
..
Wake-on: g
...
this means, according to the man, that
Wake on Lan is enabled for MagicPacket packets
on p2p1
Now I looked in the code of the
On Tue, May 14, 2013 at 11:54 AM, Gergely Buday gbu...@gmail.com wrote:
Prabhu nath wrote:
But if the device has to generate an interrupt on the reception of the data
then it is best for the driver code to be in the kernel space waiting for
the data, rather than in the user space because
I think the webpage itself will talk what are the drivers that are
preferred in the user space.
In principle, following are the broad constituents of any device driver.
1. code operating on device registers / device memory / device FIFO
(through device registers)
2. code operating on some data in
Are there serious user space drivers in Linux? Could you name a few?
Printer drivers, scanner drivers, file system drivers etc.
How can I find them? Are they in the kernel source tree?
- Gergely
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Hi Sergio,
On Tue, May 14, 2013 at 12:41 AM, Sergio Andrés Gómez del Real
sergio.g.delr...@gmail.com wrote:
I've got some questions regarding this linear to physical address
mapping on x86 architecture; I'm not sure I've grassped the whole
thing.
Before asking, I'd like to be sure I
On Tue, May 14, 2013 at 10:18 AM, Gergely Buday gbu...@gmail.com wrote:
Are there serious user space drivers in Linux? Could you name a few?
Printer drivers, scanner drivers, file system drivers etc.
How can I find them? Are they in the kernel source tree?
They are everywhere except the
It is an arbitrary question that popped in my mind. However, I came to know
that the constraints I stated in the previous mail is only restricted to
x86 only.Now besides my first questions , I have one more question, Why x86
only?
On Tue, May 14, 2013 at 2:34 AM, Sergio Andrés Gómez del Real
Are there serious user space drivers in Linux? Could you name a few?
Printer drivers, scanner drivers, file system drivers etc.
Hope this helps,
Sannu
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On Tue, 14 May 2013 11:15:35 +0530, Paul Davies C said:
It is an arbitrary question that popped in my mind. However, I came to know
that the constraints I stated in the previous mail is only restricted to
x86 only.Now besides my first questions , I have one more question, Why x86
only?
It's
Well, I came up with the same question: Why 896MB (almost all the linear space)
is permanently mapped linearly to physical memory? The alternative would be to
map just the amount that accounts to the kernel image and the uninitialized
data, and then dinamically map the rest. I'd guess that the
On 05/14/2013 11:59 AM, Prashant Shah wrote:
Hi,
On Mon, May 13, 2013 at 9:52 PM, Matthias Brugger
matthias@gmail.com wrote:
El 13/05/2013 10:07, shampavman shampavman...@gmail.com va escriure:
Hi all,
Supposing i create a file of size 10K, it will occupy 2 blocks (4K each).
Now if
On Tue, 14 May 2013 12:05:32 +0530, shampavman said:
But why does a simple read not turn out 1 block for me?
So explain to us why you think a read of 4096 bytes is reading something
other than 1 4K block?
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