[gentoo-user] kernel 3.17.0

[gentoo-user] kernel 3.17.0

[Philip Webb]

I just installed Kernel 3.17.0 (gentoo-sources)
& noticed there are specific options for Gentoo right at the beginning.
Are we really privileged to have our own place in kernel-land
or have these been added by the Gentoo devs ?

-- 
========================,,============================================
SUPPORT     ___________//___,   Philip Webb
ELECTRIC   /] [] [] [] [] []|   Cities Centre, University of Toronto
TRANSIT    `-O----------O---'   purslowatchassdotutorontodotca

Re: [gentoo-user] kernel 3.17.0

[Tomas Mozes]

On 2014-10-18 06:17, Philip Webb wrote:
> I just installed Kernel 3.17.0 (gentoo-sources)
> & noticed there are specific options for Gentoo right at the beginning.
> Are we really privileged to have our own place in kernel-land
> or have these been added by the Gentoo devs ?

They are provided via gentoo devs (check genpatches-extras).

Re: [gentoo-user] kernel 3.17.0

[Alan McKinnon]

On 18/10/2014 06:17, Philip Webb wrote:
> I just installed Kernel 3.17.0 (gentoo-sources)
> & noticed there are specific options for Gentoo right at the beginning.
> Are we really privileged to have our own place in kernel-land
> or have these been added by the Gentoo devs ?
> 


The latter. They've also been there for a rather long time already,
perhaps as much as a year :-)

-- 
Alan McKinnon
alan.mckinnon@gmail.com

Re: [gentoo-user] kernel 3.17.0

[Stefan G. Weichinger]

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What do they do for us lucky chaps? ;-) 

On October 18, 2014 1:33:18 PM GMT+02:00, Alan McKinnon <alan.mckinnon@gmail.com> wrote:
>On 18/10/2014 06:17, Philip Webb wrote:
>> I just installed Kernel 3.17.0 (gentoo-sources)
>> & noticed there are specific options for Gentoo right at the
>beginning.
>> Are we really privileged to have our own place in kernel-land
>> or have these been added by the Gentoo devs ?
>> 
>
>
>The latter. They've also been there for a rather long time already,
>perhaps as much as a year :-)
>
>-- 
>Alan McKinnon
>alan.mckinnon@gmail.com

-- 
Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.

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Re: [gentoo-user] kernel 3.17.0

[Alan McKinnon]

On 18/10/2014 23:09, Stefan G. Weichinger wrote:
> What do they do for us lucky chaps? ;-)


Read the supplied descriptions in your choice of "make *config" options


> 
> On October 18, 2014 1:33:18 PM GMT+02:00, Alan McKinnon
> <alan.mckinnon@gmail.com> wrote:
> 
>     On 18/10/2014 06:17, Philip Webb wrote:
> 
>         I just installed Kernel 3.17.0 (gentoo-sources)
>         & noticed there are specific options for Gentoo right at the
>         beginning.
>         Are we really privileged to have our own place in kernel-land
>         or have these been added by the Gentoo devs ?
> 
> 
> 
>     The latter. They've also been there for a rather long time already,
>     perhaps as much as a year :-)
> 
> 
> -- 
> Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail
> gesendet.


-- 
Alan McKinnon
alan.mckinnon@gmail.com

Re: [gentoo-user] kernel 3.17.0

[Volker Armin Hemmann]

Am 18.10.2014 um 06:17 schrieb Philip Webb:
> I just installed Kernel 3.17.0 (gentoo-sources)
> & noticed there are specific options for Gentoo right at the beginning.
> Are we really privileged to have our own place in kernel-land
> or have these been added by the Gentoo devs ?
>

and that is why I don't use gentoo-sources.

Re: [gentoo-user] kernel 3.17.0

[Tomas Mozes]

On 2014-10-18 23:16, Volker Armin Hemmann wrote:
> Am 18.10.2014 um 06:17 schrieb Philip Webb:
>> I just installed Kernel 3.17.0 (gentoo-sources)
>> & noticed there are specific options for Gentoo right at the 
>> beginning.
>> Are we really privileged to have our own place in kernel-land
>> or have these been added by the Gentoo devs ?
>> 
> 
> and that is why I don't use gentoo-sources.

Out of curiosity, may I ask why?

Re: [gentoo-user] kernel 3.17.0

[Andrew Savchenko]

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Hi,

On Mon, 20 Oct 2014 07:06:32 +0200 Tomas Mozes wrote:
> On 2014-10-18 23:16, Volker Armin Hemmann wrote:
> > Am 18.10.2014 um 06:17 schrieb Philip Webb:
> >> I just installed Kernel 3.17.0 (gentoo-sources)
> >> & noticed there are specific options for Gentoo right at the 
> >> beginning.
> >> Are we really privileged to have our own place in kernel-land
> >> or have these been added by the Gentoo devs ?
> >> 
> > 
> > and that is why I don't use gentoo-sources.
> 
> Out of curiosity, may I ask why?

My 2 cents here.

1) In the past I had hardly traceable issues with gentoo-sources
which were not present in vanilla kernels. I just switched back to
vanilla.

2) Gentoo-sources are sometimes behind vanilla kernel. Due to some
derivative from Murphy's law this always happens when I need some
new features.

3) I looked over patches in gentoo-sources and found none I'm
interested into. (That doesn't mean they are useless, just not my
usecases.)


Best regards,
Andrew Savchenko

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Re: [gentoo-user] kernel 3.17.0

[Volker Armin Hemmann]

Am 20.10.2014 um 07:06 schrieb Tomas Mozes:
> On 2014-10-18 23:16, Volker Armin Hemmann wrote:
>> Am 18.10.2014 um 06:17 schrieb Philip Webb:
>>> I just installed Kernel 3.17.0 (gentoo-sources)
>>> & noticed there are specific options for Gentoo right at the beginning.
>>> Are we really privileged to have our own place in kernel-land
>>> or have these been added by the Gentoo devs ?
>>>
>>
>> and that is why I don't use gentoo-sources.
>
> Out of curiosity, may I ask why?
>
>

If I stumble across a BUG() or OOPS, I can go straight to lkml and
report it, without somebody saying 'try to reproduce it with a plain
linux kernel'. Also, the less patches the smaller the chance that
somebody introduced some arcane incompatibility. Important if you are
inclined to use third party drivers or out of tree file systems.

Also, gentoo-sources never gave me anything I did miss with vanilla
sources. So why using them?

Re: [gentoo-user] kernel 3.17.0

[Michael Mattes]

And that is because of the additional features? :-D

Am 18.10.2014 23:16, schrieb Volker Armin Hemmann:
> Am 18.10.2014 um 06:17 schrieb Philip Webb:
>> I just installed Kernel 3.17.0 (gentoo-sources)
>> & noticed there are specific options for Gentoo right at the 
>> beginning.
>> Are we really privileged to have our own place in kernel-land
>> or have these been added by the Gentoo devs ?
>> 
> 
> and that is why I don't use gentoo-sources.

Re: [gentoo-user] kernel 3.17.0

[Fernando Rodriguez]

On Monday 20 October 2014 10:59:52 AM Michael Mattes wrote:
> And that is because of the additional features? :-D

I've had issues with the additional features too. Some of the USB serial 
devices don't get detected. But this is fixed by disabling the Gentoo specific 
options. I may be wrong but I think they're just configuration patches, not the 
actual kernel sources. I do use the vanilla kernel because at one point I 
needed features from a version that wasn't yet on portage.



> Am 18.10.2014 23:16, schrieb Volker Armin Hemmann:
> > Am 18.10.2014 um 06:17 schrieb Philip Webb:
> >> I just installed Kernel 3.17.0 (gentoo-sources)
> >> & noticed there are specific options for Gentoo right at the 
> >> beginning.
> >> Are we really privileged to have our own place in kernel-land
> >> or have these been added by the Gentoo devs ?
> >> 
> > 
> > and that is why I don't use gentoo-sources.
> 

Re: [gentoo-user] kernel 3.17.0

[Rich Freeman]

On Thu, Oct 23, 2014 at 11:53 PM, Fernando Rodriguez
<frodriguez.developer@outlook.com> wrote:
> On Monday 20 October 2014 10:59:52 AM Michael Mattes wrote:
>> And that is because of the additional features? :-D
>
> I've had issues with the additional features too. Some of the USB serial
> devices don't get detected. But this is fixed by disabling the Gentoo specific
> options. I may be wrong but I think they're just configuration patches, not the
> actual kernel sources. I do use the vanilla kernel because at one point I
> needed features from a version that wasn't yet on portage.
>

How long ago was this?  It looks like gentoo-sources just tracks the
stable kernel, and so does vanilla-sources.  If you want mainline you
need git-sources, assuming you aren't just pulling them from git
yourself (an option you of-course have with vanilla too).

The config items in the gentoo-sources are really just master switches
to turn on everything needed by openrc/systemd/etc - they're
conveniences just like meta-packages in portage.

Now, gentoo-sources DOES include additional patches, and some of them
are features.  It is of course entirely possible that they could cause
problems, but I imagine that they're selected fairly carefully.

The general philosophy mixed with some very dated info can be found at:
http://dev.gentoo.org/~mpagano/genpatches/

--
Rich

Re: [gentoo-user] kernel 3.17.0

[Fernando Rodriguez]

On Friday 24 October 2014 7:22:24 AM Rich Freeman wrote:
> On Thu, Oct 23, 2014 at 11:53 PM, Fernando Rodriguez
> <frodriguez.developer@outlook.com> wrote:
> > On Monday 20 October 2014 10:59:52 AM Michael Mattes wrote:
> >> And that is because of the additional features? :-D
> >
> > I've had issues with the additional features too. Some of the USB serial
> > devices don't get detected. But this is fixed by disabling the Gentoo 
specific
> > options. I may be wrong but I think they're just configuration patches, not 
the
> > actual kernel sources. I do use the vanilla kernel because at one point I
> > needed features from a version that wasn't yet on portage.
> >
> 
> How long ago was this?  It looks like gentoo-sources just tracks the
> stable kernel, and so does vanilla-sources.  If you want mainline you
> need git-sources, assuming you aren't just pulling them from git
> yourself (an option you of-course have with vanilla too).
> 
> The config items in the gentoo-sources are really just master switches
> to turn on everything needed by openrc/systemd/etc - they're
> conveniences just like meta-packages in portage.
> 
> Now, gentoo-sources DOES include additional patches, and some of them
> are features.  It is of course entirely possible that they could cause
> problems, but I imagine that they're selected fairly carefully.
> 
> The general philosophy mixed with some very dated info can be found at:
> http://dev.gentoo.org/~mpagano/genpatches/
> 
> --
> Rich
> 

Not that long ago maybe 2-3 months, it may be very close behind upstream but 
at that time it was. 

It is the master switch that still causes the USB problem for me. I don't know 
exactly how that works but none of the usb serial drivers in the kernel have 
my device id hardcoded on the devices table, if I add it to some of the 
drivers and recompile they get detected but work only if I use file IO system 
calls to communicate with it. If I just disable the gentoo master switches it 
works out of the box with any application. Everything else that I need works 
fine with the switch disabled.
 
----------
Fernando Rodriguez
frodriguez.developer@outlook.com