Hi, all
I have a question about major/minor device number. I know that one can
use int register_chrdev_region(dev_t from, unsigned count, const char
*name); to register a driver with a unique pair of major/minor device
number. But what's the difference between two drivers: in one case
they have sa
2012/2/12 hz hanks :
> Hi, all
>
> I have a question about major/minor device number. I know that one can
> use int register_chrdev_region(dev_t from, unsigned count, const char
> *name); to register a driver with a unique pair of major/minor device
> number. But what's the difference between two d
On Sun, 12 Feb 2012, Alexandru Juncu wrote:
> 2012/2/12 hz hanks :
> > Hi, all
> >
> > I have a question about major/minor device number. I know that one can
> > use int register_chrdev_region(dev_t from, unsigned count, const char
> > *name); to register a driver with a unique pair of major/minor
On Sat, Feb 11, 2012 at 14:05, chromaticwt zac wrote:
> what is the proper way to cross compile the linux kernel from one arch to
> another? specifically,
> i386 -> ppc.
Just adding to what others had said, you might also consider ptxdist
or scratchbox to automate such cross compiling things. Of
Hi :)
Let me try to help ...
On Sat, Feb 11, 2012 at 16:52, hz hanks wrote:
> Hi, all
>
> I'm confused with different addresses in Linux, such as virtual
> address and hardware address.
very very likely you will deal with virtual address, because you're in
protected mode and MMU (Memory Managem
Hi Peter...
On Sat, Feb 11, 2012 at 20:57, Peter Senna Tschudin
wrote:
> Graeme,
>
> I found a problem on my code. I was calling kmalloc() only once for
> both portions of code. The result is that the first loop that accessed
> the memory was finding some penalty. Now I'm calling independent
> km
2012/2/12 hz hanks :
> Hey Alexandru Juncu
>
> Thank you so much! You are so helpful for me.
>
> As far as I'm concerned, the point that confuses me is the definition
> of ONE device driver. For example, I would consider a file of some
> source codes, that manipulate the GPIO and use misc_register
Hi, I am new to kernel programming, I have written one module to get
vfs inode using path_lookup function in kernel 2.6.35.
Now I am trying to compile same module under kernel 3.1.6 then i got
some errors like ioctl undefined, path_lookup not present i.e error:
implicit declaration of function ‘p
Hey Alexandru Juncu
Thank you for your help again. Sorry about that mistake, I just didn't
notice the forward address when using quick reply. It won't happen
again.
Best.
2012/2/12 Alexandru Juncu :
> 2012/2/12 hz hanks :
>> Hey Alexandru Juncu
>>
>> Thank you so much! You are so helpful for me
Hi, rday
Thank you for your help. Yes! You did point out my question. I will do
read drivers/char/misc.c for a better understanding.
Best,
2012/2/12 Robert P. J. Day :
> On Sun, 12 Feb 2012, Alexandru Juncu wrote:
>
>> 2012/2/12 hz hanks :
>> > Hi, all
>> >
>> > I have a question about major/mi
On Sun, 12 Feb 2012, hz hanks wrote:
> Hi, rday
>
> Thank you for your help. Yes! You did point out my question. I will do
> read drivers/char/misc.c for a better understanding.
as part of my kernel programming course, i show how to allocate and
register a simple char misc device:
= start
On Sun, Feb 12, 2012 at 11:17 AM, Mulyadi Santosa wrote:
> On Sat, Feb 11, 2012 at 14:05, chromaticwt zac
> wrote:
> > what is the proper way to cross compile the linux kernel from one arch to
> > another? specifically,
> > i386 -> ppc.
>
Try this tutorial
http://free-electrons.com/docs/toolchai
On Sun, Feb 12, 2012 at 11:38 PM, Anuz Pratap Singh Tomar <
chambilketha...@gmail.com> wrote:
>
>
> On Sun, Feb 12, 2012 at 11:17 AM, Mulyadi Santosa <
> mulyadi.sant...@gmail.com> wrote:
>
>> On Sat, Feb 11, 2012 at 14:05, chromaticwt zac
>> wrote:
>> > what is the proper way to cross compile th
Hi All,
I am doing POSIX test on linux. And for mq_timedreceive() in POSIX spec
2008 Issue 7, Line 43787:
The validity of the abstime parameter need not be checked if a
message can be removed from the message queue immediately.
But when I run test case mq_timedreceive/10-2 of POSIX suite (ca
hi all:
I add below function in free_uid to get which task try to free user_struct
struct task_struct *p;
struct cred *c;
c = container_of(up,struct cred, user);
p = container_of(c,struct task_struct,real_cred);
printk("%s user %p, cred->user = %p p->pid = %d\n",__func__,up, c->user,p->pid);
but
Hello, everyone,
I am a beginner to learn about the linux kernel. I met the following
problem today:
I created a C file called "drv_event.c", and put it into the location
"/lib", since I want to link it to the library of the kernel, i.e., *lib.a*.
I also put the header file "drv_event.h" into the
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