date:20130403

Re: [yocto] [meta-yocto][PATCH] poky.conf: Use weaker assignment for PREMIRROR

2013-04-03 Thread Paul Eggleton

On Tuesday 02 April 2013 22:11:50 Khem Raj wrote:
> This is to facilitate distros using poky as reference
> so that they can use ?= and provide an option for their
> users to override it if desired
> 
> Signed-off-by: Khem Raj 
> ---
>  meta-yocto/conf/distro/poky.conf |2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/meta-yocto/conf/distro/poky.conf
> b/meta-yocto/conf/distro/poky.conf index afe328b..963b3dd 100644
> --- a/meta-yocto/conf/distro/poky.conf
> +++ b/meta-yocto/conf/distro/poky.conf
> @@ -44,7 +44,7 @@ TCLIBCAPPEND = ""
>  QEMU_TARGETS ?= "arm i386 mips mipsel ppc x86_64"
>  # Other QEMU_TARGETS "mips64 mips64el sh4"
> 
> -PREMIRRORS ?= "\
> +PREMIRRORS ??= "\
>  bzr://.*/.*   http://downloads.yoctoproject.org/mirror/sources/ \n \
>  cvs://.*/.*   http://downloads.yoctoproject.org/mirror/sources/ \n \
>  git://.*/.*   http://downloads.yoctoproject.org/mirror/sources/ \n \

I'm not sure this is a path we should be going down; potentially we could end 
up having to use ??= for just about everything.

Wouldn't you be better off using your own separate distro config (perhaps 
copying poky.conf instead of "require"ing it) and then the user can just set 
it with "=" ?

Cheers,
Paul

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Paul Eggleton
Intel Open Source Technology Centre
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Re: [yocto] [meta-yocto][PATCH] poky.conf: Use weaker assignment for PREMIRROR

2013-04-03 Thread Khem Raj


On Apr 2, 2013, at 11:41 PM, Paul Eggleton  
wrote:

> I'm not sure this is a path we should be going down; potentially we could end 
> up having to use ??= for just about everything.
> 

whats is downside of using ??= instead of ?=

> Wouldn't you be better off using your own separate distro config (perhaps 
> copying poky.conf instead of "require"ing it) and then the user can just set 
> it with "=" ?

yes. however you are then always on lookout for changes happening in poky 
policies then
you need to mimic in your distro config

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Re: [yocto] [meta-yocto][PATCH] poky.conf: Use weaker assignment for PREMIRROR

2013-04-03 Thread Paul Eggleton

On Tuesday 02 April 2013 23:44:06 Khem Raj wrote:
> On Apr 2, 2013, at 11:41 PM, Paul Eggleton  
wrote:
> > I'm not sure this is a path we should be going down; potentially we could
> > end up having to use ??= for just about everything.
> 
> whats is downside of using ??= instead of ?=

The volume of changes to the config that this will require, a minor memory 
usage increase (I suspect), but more importantly it increases the complexity 
for the end user. Right now ??= is used sparingly.

> > Wouldn't you be better off using your own separate distro config (perhaps
> > copying poky.conf instead of "require"ing it) and then the user can just
> > set it with "=" ?
> 
> yes. however you are then always on lookout for changes happening in poky
> policies then you need to mimic in your distro config

Wouldn't it be the reverse at the moment? We do add new things to the poky 
distro config when we need to test them and those new things might not be 
desirable in your configuration.

Distro configs should remain fairly static once initially set. FWIW, we do call 
out any needed changes between releases in the migration information within 
the documentation.

Cheers,
Paul

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Paul Eggleton
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Re: [yocto] [meta-yocto][PATCH] poky.conf: Use weaker assignment for PREMIRROR

2013-04-03 Thread Khem Raj

On Apr 2, 2013, at 11:56 PM, Paul Eggleton  
wrote:

> On Tuesday 02 April 2013 23:44:06 Khem Raj wrote:
>> On Apr 2, 2013, at 11:41 PM, Paul Eggleton  
> wrote:
>>> I'm not sure this is a path we should be going down; potentially we could
>>> end up having to use ??= for just about everything.
>> 
>> whats is downside of using ??= instead of ?=
> 
> The volume of changes to the config that this will require, a minor memory 
> usage increase (I suspect), but more importantly it increases the complexity 
> for the end user. Right now ??= is used sparingly.

> 
>>> Wouldn't you be better off using your own separate distro config (perhaps
>>> copying poky.conf instead of "require"ing it) and then the user can just
>>> set it with "=" ?
>> 
>> yes. however you are then always on lookout for changes happening in poky
>> policies then you need to mimic in your distro config
> 
> Wouldn't it be the reverse at the moment? We do add new things to the poky 
> distro config when we need to test them and those new things might not be 
> desirable in your configuration.
> 

no, if one is tracking upstream and wants to remain compatible its lot better 
to take in all policies
and then customize it. and once released the policies are not changed anyway. 
Its easier to test and customize
your distro that way since changes are incremental examples are when new QA 
checks are enabled you want to fix
your own layers quickly and its one less hassle to keep syncing policies when 
your distro and you can get quicker
response to fallouts if any. From personal experience including it has been a 
better way and indirectly is more integrated.

After all poky is a reference distro policy, whether we should recommend to 
copy it or include it in custom distros,
either ways is fine with good reasons. You sound like supporting the second 
case, I am impartial to whatever is the
recommendation there are good and bad of both approaches.

I am also interested in hearing from other yocto users how are they consuming 
poky policies 

> Distro configs should remain fairly static once initially set.

after releases yes but not when you are building next gen which is for active 
development.

> FWIW, we do call 
> out any needed changes between releases in the migration information within 
> the documentation.

yes as I said once needs to sync.
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Re: [yocto] how to convert source rpm spec to bitbake recipe?

2013-04-03 Thread Paul Eggleton

Hi Michael,

On Sunday 31 March 2013 08:45:23 Michael Fainstein wrote:
> Is there a tool or guide for conversion of source rpm spec file to bitbake
> recipe?

There is scripts/create-recipe - this is aimed at just downloading source and 
using a spec file contained within as a basis for a new recipe (among other 
methods it uses to determine recipe contents), however it could be adapted to 
read a specified spec file I would think.

Cheers,
Paul

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Intel Open Source Technology Centre
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[linux-yocto] gdb target kernel debug

2013-04-03 Thread Lai Eddy

I want to debug the kernel module loaded in the x86_64 (jasperforest)
linux-yocto target,
so I load the 'vmlinux' with gdb on the host PC (CentOS 6.4_x64) ,
but looks like the gdb failed to connect the target,
should I add any 'kernel boot parameters' to enable the kgdb use ttyS0 ?

my target boot from a USB drive with SYSLINUX, the target's ttyS0 is used
as console output,
should I use ttyS1 on target as debug port instead of ttyS0? how can I set
that?

and , when I run "echo g > /proc/sysrq-trigger" on target console, the
target machine not freeze as expect.

--
[root@localhost linux-jasperforest-standard-build]# x86_64-poky-linux-gdb
vmlinux
GNU gdb (GDB) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-pokysdk-linux
--target=x86_64-poky-linux".
For bug reporting instructions, please see:
...
Reading symbols
fromtmp/work/jasperforest-poky-linux/linux-yocto/3.4.26+gitAUTOINC+4fd76cc4f33e0afd8f906b1e8f231b6d13b6c993_840bb8c059418c4753415df56c9aff1c0d5354c8-r4.3/linux-jasperforest-standard-build/vmlinux...done.
(gdb) target remote /dev/ttyS0
Remote debugging using /dev/ttyS0
Ignoring packet error, continuing...
warning: unrecognized item "qRelocInsn+���b5" in "qSupported" response
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Malformed response to offset query, qOffsets���4bftiprocess
(gdb)
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