Re: Work

[ravi ranjan Mishra]

How to make environment like (build and test) for working on kernel patch,
what are the resources should be available for that.
thanks.


On Fri, Jul 25, 2014 at 7:53 AM, Nick Krause  wrote:

> On Thu, Jul 24, 2014 at 1:10 PM, Nick Krause  wrote:
> > On Thu, Jul 24, 2014 at 12:51 PM, Andev  wrote:
> >> On Thu, Jul 24, 2014 at 12:38 PM, Nick Krause 
> wrote:
> >>> Is there any work for a kernel newbie that you guys known of?
> >>> Cheers Nick
> >>>
> >>
> >> Your first task will be reading and _understanding_ the following:
> >>
> >> Greg Kroah-Hartman, "How to piss off a kernel subsystem maintainer".
> >>   
> >>   
> >>   
> >>   
> >>   
> >>
> >> from Documentation/SubmittingPatches.
> >>
> >> --
> >> Andev
> >
> >
> > Yes, I didn't build test and that is a huge mistake.
> > Cheers Nick
>
> Andev,
> I having been doing build tests and checkpatch in staging for the last
> month.
> It doesn't seem like it's worth my time as so my other people are doing
> it. I
> want an interesting project one that is challenging and rewarding :).
> Nick
>
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Re: Help with flame wars

[anish singh]

On Wed, Jul 23, 2014 at 10:37 PM, Kristofer Hallin <
kristofer.hal...@gmail.com> wrote:

> Seems like you got some great guidance too.
>
> https://lkml.org/lkml/2014/7/23/443
> On 24 Jul 2014 06:38, "Nick Krause"  wrote:
>
>> As a new kernel developer I seem to have sent out some bad patches and
>> the other developers
>> are stating I should stop working on the kernel and learn C , even
>> though I known it. I would like
>> to see if we can stop these flame wars as there really wanting me to quit.
>>
> I don't think anyone said anything bad about the patch. They just want to
know
the motive behind the patch as it expected.
Anyway would you stop walking if someone doesn't like you to walk?

> Nick
>>
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Re: Work

[Nick Krause]

On Thu, Jul 24, 2014 at 1:10 PM, Nick Krause  wrote:
> On Thu, Jul 24, 2014 at 12:51 PM, Andev  wrote:
>> On Thu, Jul 24, 2014 at 12:38 PM, Nick Krause  wrote:
>>> Is there any work for a kernel newbie that you guys known of?
>>> Cheers Nick
>>>
>>
>> Your first task will be reading and _understanding_ the following:
>>
>> Greg Kroah-Hartman, "How to piss off a kernel subsystem maintainer".
>>   
>>   
>>   
>>   
>>   
>>
>> from Documentation/SubmittingPatches.
>>
>> --
>> Andev
>
>
> Yes, I didn't build test and that is a huge mistake.
> Cheers Nick

Andev,
I having been doing build tests and checkpatch in staging for the last month.
It doesn't seem like it's worth my time as so my other people are doing it. I
want an interesting project one that is challenging and rewarding :).
Nick

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hacking kernel-3.x with ncc

[Real Name]

hi,
  is there anyone hacking/browsering kernel-3.x with ncc? If yes, could you 
please provide some suggestion how to do it?

  http://students.ceid.upatras.gr/~sxanth/ncc/

thanks  

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Re: How to force my usb mouse using a kernel module created by myself?

[Julio Faracco]

Hi Bobby!

Yes, you're right!
I did the task, but I cannot prove to myself if my module works!
I tryed udev rules and I read the chapter 14.
But no progess... That article is so useful to me.

Thanks! =)

*Julio Cesar Faracco*
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Re: Task 1 of Eudyptula Challenge

[Aruna Hewapathirane]

Sorry that should be: /linux/Documentation/kbuild  :)

On Thu, Jul 24, 2014 at 4:16 PM, Aruna Hewapathirane
 wrote:
> Hi Nick,
>
> Please go through the file: linux/Documentatio/kbuild/modules.txt
>
> Good luck !
>
> Aruna
>
> On Thu, Jul 24, 2014 at 3:55 PM, Nick Krause  wrote:
>> Hey guys,
>> I am need so I was  wondering how to write the Makefile.
>> Cheers Nick
>>
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Re: How to force my usb mouse using a kernel module created by myself?

[Bobby Abraham]

Julio,

This looks very similar to a task in Eudyptula Challenge (not sure if
your question arises from that or not). I am very new to the kernel
myself and am going taking the challenge as well. Since its part of
the challenge, I think it would not be fair to provide the answer in
its entirety

You can take a look at the following

Chapter 14 of the book Linux Device Drivers ( a great book )

I found the following article very useful as well

http://www.opensourceforu.com/2011/10/usb-drivers-in-linux-1/


Bobby


On Thu, Jul 24, 2014 at 3:38 PM, Julio Faracco  wrote:
> Hi everyone!
>
> It's a dumb question, but is not working with me.
>
> Does anybody knows how to force my usb mouse using a kernel module created
> by myself? When I plug my mouse it need to load my module and not the
> generic one.
>
> Thanks!
>
> Julio Cesar Faracco
>
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Re: Task 1 of Eudyptula Challenge

[Aruna Hewapathirane]

Hi Nick,

Please go through the file: linux/Documentatio/kbuild/modules.txt

Good luck !

Aruna

On Thu, Jul 24, 2014 at 3:55 PM, Nick Krause  wrote:
> Hey guys,
> I am need so I was  wondering how to write the Makefile.
> Cheers Nick
>
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Re: Task 1 of Eudyptula Challenge

[Jeshwanth Kumar N K]

Hi,
And example makefile is available in

http://www.tldp.org/LDP/lkmpg/2.6/html/lkmpg.html

Thanks
On 25-Jul-2014 1:30 am, "Lucas Tanure"  wrote:

> Nick,
>
> There is https://www.kernel.org/doc/Documentation/kbuild/makefiles.txt
> and
> https://www.kernel.org/doc/Documentation/kbuild/modules.txt
>
> Thanks
>
>
> --
> Lucas Tanure
> +55 (19) 988176559
>
>
> On Thu, Jul 24, 2014 at 4:55 PM, Nick Krause  wrote:
>
>> Hey guys,
>> I am need so I was  wondering how to write the Makefile.
>> Cheers Nick
>>
>> ___
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>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>
>
>
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Re: Task 1 of Eudyptula Challenge

[Lucas Tanure]

Nick,

There is https://www.kernel.org/doc/Documentation/kbuild/makefiles.txt
and
https://www.kernel.org/doc/Documentation/kbuild/modules.txt

Thanks


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On Thu, Jul 24, 2014 at 4:55 PM, Nick Krause  wrote:

> Hey guys,
> I am need so I was  wondering how to write the Makefile.
> Cheers Nick
>
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Task 1 of Eudyptula Challenge

[Nick Krause]

Hey guys,
I am need so I was  wondering how to write the Makefile.
Cheers Nick

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How to force my usb mouse using a kernel module created by myself?

[Julio Faracco]

Hi everyone!

It's a dumb question, but is not working with me.

Does anybody knows how to force my usb mouse using a kernel module created
by myself? When I plug my mouse it need to load my module and not the
generic one.

Thanks!

*Julio Cesar Faracco*
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Re: printk or pr_?

[Arlie Stephens]

Thank-you Greg

On Jul 23 2014, Greg KH wrote:
> 
> On Wed, Jul 23, 2014 at 02:45:05PM -0700, Arlie Stephens wrote:
> > On Jul 23 2014, Kristofer Hallin wrote:
> > 
> > > 1. No. Depending on what subsystem your are printing logs from you
> > > should use different functions for logging. In the networking
> > > subsystem netdev_dbg is suitable and so on. Otherwise pr_debug will
> > > always work and is always preferred over printk.
> > 
> > Why?  

[snip]

> Ok, here's the rule in one sentance:
>   Be as _descriptive_ as you can with the device that is emitting
>   the message.
> 
> So what does that mean in reality?
> 
> Use the subsystem's logging macros for your messages.  If you are not in
> a subsystem, then fall back to the "default" pr_* messages.
> 
> So, if you are a network driver, then use netdev_dbg().  Other
> subsystems of "class" devices have their own form of logging macros, and
> they should be easy to find.
> 
> If you aren't in a class driver, but are a driver, then use dev_dbg(),
> because you do have a device pointer accessable to you (if you don't,
> either you are in your module init or exit function, and you shouldn't
> be printing messages then anyway.)
> 
> If you are not in a driver, and you do not have _any_ 'struct device'
> accessable to you, reconsider if you really want to be printing
> anything, as the use of it to a user is going to be really low.  But if
> you have to, then fall back to the pr_* functions, as those tie into the
> dynamic debugging logic of the kernel, and provide a format that is
> unified that userspace tools can use to hopefully search and find things
> properly.
> 
> So there is a method to this madness, and it is pretty simple if you
> think about it this way.
> 
> Does that help out?

Yes it does. Thank you. 

And I think I see why I needed help - I'm mentally a "core kernel"
person, whatever I may happen to be working on at the moment ;-) 

So my archetypal kernel message would be something like the ones
generated by BUG_ON() ;-)  

> 
> greg k-h

-- 
Arlie

(Arlie Stephens ar...@worldash.org)

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Re: Work

[Nick Krause]

On Thu, Jul 24, 2014 at 12:51 PM, Andev  wrote:
> On Thu, Jul 24, 2014 at 12:38 PM, Nick Krause  wrote:
>> Is there any work for a kernel newbie that you guys known of?
>> Cheers Nick
>>
>
> Your first task will be reading and _understanding_ the following:
>
> Greg Kroah-Hartman, "How to piss off a kernel subsystem maintainer".
>   
>   
>   
>   
>   
>
> from Documentation/SubmittingPatches.
>
> --
> Andev


Yes, I didn't build test and that is a huge mistake.
Cheers Nick

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Re: Work

[Andev]

On Thu, Jul 24, 2014 at 12:38 PM, Nick Krause  wrote:
> Is there any work for a kernel newbie that you guys known of?
> Cheers Nick
>

Your first task will be reading and _understanding_ the following:

Greg Kroah-Hartman, "How to piss off a kernel subsystem maintainer".
  
  
  
  
  

from Documentation/SubmittingPatches.

-- 
Andev

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Re: Work

[Nick Krause]

On Thu, Jul 24, 2014 at 12:44 PM, Lucas Tanure  wrote:
> Could start cleaning a driver ?
> http://kernelnewbies.org/OPWfirstpatch#head-4abafc61af197fb6e3d6cda623b00bdd90a52c26
>
> The job here is about how to send patchs and not doing a awesome code.
>
>
> --
> Lucas Tanure
> +55 (19) 988176559
>
>
> On Thu, Jul 24, 2014 at 1:38 PM, Nick Krause  wrote:
>>
>> Is there any work for a kernel newbie that you guys known of?
>> Cheers Nick
>>
>> ___
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>
>

I sent in some patches to Greg on the linux-next tree for staging.
Cheers Nick

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Re: Work

[Lucas Tanure]

Could start cleaning a driver ?
http://kernelnewbies.org/OPWfirstpatch#head-4abafc61af197fb6e3d6cda623b00bdd90a52c26

The job here is about how to send patchs and not doing a awesome code.


--
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+55 (19) 988176559


On Thu, Jul 24, 2014 at 1:38 PM, Nick Krause  wrote:

> Is there any work for a kernel newbie that you guys known of?
> Cheers Nick
>
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Re: Work

[Kristofer Hallin]

Take a look at drivers/staging/. You will find something there to work on.
On Jul 24, 2014 6:38 PM, "Nick Krause"  wrote:

> Is there any work for a kernel newbie that you guys known of?
> Cheers Nick
>
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Work

[Nick Krause]

Is there any work for a kernel newbie that you guys known of?
Cheers Nick

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Re: [PowerPC] - Define error in arch/arch/powerpc/boot/io.h ??

[Lucas Tanure]

Ok, I will ask for a embedded powerpc board to test this.

Thanks


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On Thu, Jul 24, 2014 at 12:43 PM,  wrote:

> On Thu, 24 Jul 2014 14:19:37 +0200, Kristof Provost said:
> > On 2014-07-24 09:00:22 (-0300), Lucas Tanure  wrote:
> > > Line 2 of arch/arch/powerpc/boot/io.h :
> > >
> > >  1  #ifndef _IO_H
> > >  2  #define __IO_H
> > >  3
> > >  4  #include "types.h"
> > >
> > > Should be _IO_H, not __IO_H. I'm right ?
> > >
> > That certainly looks wrong. It's also been wrong since October 2006, so
> > it's probably not actually causing problems.
>
> On the other hand, it would probably be a *really* good idea to test
> compile
> it on a powerpc box, see if it shakes out any latent bugs.  All that fixing
> this will do is stop us from over-including io.h (and thus types.h) - but
> if
> there's any code that breaks because we don't include types.h and they
> don't
> pick it up otherwise.
>
> (In other words, it's probably not causing a problem, but it *could*
> potentially
> be papering over a problem elsewhere...)
>
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Re: [PowerPC] - Define error in arch/arch/powerpc/boot/io.h ??

[Valdis . Kletnieks]

On Thu, 24 Jul 2014 14:19:37 +0200, Kristof Provost said:
> On 2014-07-24 09:00:22 (-0300), Lucas Tanure  wrote:
> > Line 2 of arch/arch/powerpc/boot/io.h :
> >
> >  1  #ifndef _IO_H
> >  2  #define __IO_H
> >  3
> >  4  #include "types.h"
> >
> > Should be _IO_H, not __IO_H. I'm right ?
> >
> That certainly looks wrong. It's also been wrong since October 2006, so
> it's probably not actually causing problems.

On the other hand, it would probably be a *really* good idea to test compile
it on a powerpc box, see if it shakes out any latent bugs.  All that fixing
this will do is stop us from over-including io.h (and thus types.h) - but if
there's any code that breaks because we don't include types.h and they don't
pick it up otherwise.

(In other words, it's probably not causing a problem, but it *could* potentially
be papering over a problem elsewhere...)


pgpcCThhzRMBO.pgp
Description: PGP signature
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[PATCH] powerpc: fix wrong defintion in boot/io.h

[Lucas Tanure]

Fix wrong __IO_H definition in boot/io.h

Reported-by: Fernando Silveira 
Signed-off-by: Lucas Tanure 
---
 arch/powerpc/boot/io.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/boot/io.h b/arch/powerpc/boot/io.h
index 7c09f48..394da55 100644
--- a/arch/powerpc/boot/io.h
+++ b/arch/powerpc/boot/io.h
@@ -1,5 +1,5 @@
 #ifndef _IO_H
-#define __IO_H
+#define _IO_H
 
 #include "types.h"
 
-- 
2.0.0


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Re: [PowerPC] - Define error in arch/arch/powerpc/boot/io.h ??

[Denis Kirjanov]

On 7/24/14, Lucas Tanure  wrote:
> Hi,
>
> Line 2 of arch/arch/powerpc/boot/io.h :
>
>  1  #ifndef _IO_H
>  2  #define __IO_H
>  3
>  4  #include "types.h"
>
> Should be _IO_H, not __IO_H. I'm right ?

Yes
> Thanks
>
> --
> Lucas Tanure
> +55 (19) 988176559
>


-- 
Regards,
Denis

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Re: [PowerPC] - Define error in arch/arch/powerpc/boot/io.h ??

[Kristof Provost]

On 2014-07-24 09:00:22 (-0300), Lucas Tanure  wrote:
> Line 2 of arch/arch/powerpc/boot/io.h :
> 
>  1  #ifndef _IO_H
>  2  #define __IO_H
>  3
>  4  #include "types.h"
> 
> Should be _IO_H, not __IO_H. I'm right ?
> 
That certainly looks wrong. It's also been wrong since October 2006, so
it's probably not actually causing problems.

Try sending it to the 'Trival Patch Monkey' ("For small patches you may
want to CC the Trivial Patch Monkey triv...@kernel.org which collects
"trivial" patches.")

-- 
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[PowerPC] - Define error in arch/arch/powerpc/boot/io.h ??

[Lucas Tanure]

Hi,

Line 2 of arch/arch/powerpc/boot/io.h :

 1  #ifndef _IO_H
 2  #define __IO_H
 3
 4  #include "types.h"

Should be _IO_H, not __IO_H. I'm right ?

Thanks

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