New version of ClownToolKit

New version of ClownToolKit

[clowncoder]

Hello,

The kernel module of the last version of the ClownToolKit has been 
completly rewriten. It is now readable. 
This kernel module permits the display of real-time plots for 
bandwidth of tcp/udp connexions and for qdiscs monitoring. 
It could be a usefull tool: http://clowncode.net 
Regards to you all
Vincent Perrier.

Re: New version of ClownToolKit

[Sam Ravnborg]

On Wed, Aug 16, 2006 at 07:33:08PM +0200, clowncoder wrote:
> Hello,
> 
> The kernel module of the last version of the ClownToolKit has been 
> completly rewriten. It is now readable. 
> This kernel module permits the display of real-time plots for 
> bandwidth of tcp/udp connexions and for qdiscs monitoring. 
> It could be a usefull tool: http://clowncode.net 

A small nitpick about the way ou build the ekrnel module:

In mk_and_insmod you can replace:
make -C /usr/src/linux SUBDIRS=$PWD modules
with
LIBDIR=/lib/modules/`uname -r`
make -C $LIBDIR/source O=$LIBDIR/build SUBDIRS=`pwd` modules

For a normal kernel installation this will do the right thing.
source points to the kernel source and build point to the output
directory (they are often equal but not always).

$PWD is supplied by the shell, so it is better to use `pwd`.

	Sam

Re: New version of ClownToolKit

[Bodo Eggert]

Sam Ravnborg <sam@ravnborg.org> wrote:

> A small nitpick about the way ou build the ekrnel module:
> 
> In mk_and_insmod you can replace:
> make -C /usr/src/linux SUBDIRS=$PWD modules
> with
> LIBDIR=/lib/modules/`uname -r`
> make -C $LIBDIR/source O=$LIBDIR/build SUBDIRS=`pwd` modules
> 
> For a normal kernel installation this will do the right thing.
> source points to the kernel source and build point to the output
> directory (they are often equal but not always).

Please don't tell module authors to unconditionally use `uname -r`.
I frequently build kernels for differentd hosts, and if I don't, I'll
certainly compile the needed modules before installing the kernel.
Therefore /lib/modules/`uname -r` is most certainly the completely
wrong place to look for the kernel source.
-- 
Ich danke GMX dafür, die Verwendung meiner Adressen mittels per SPF
verbreiteten Lügen zu sabotieren.

http://david.woodhou.se/why-not-spf.html

Re: New version of ClownToolKit

[Sam Ravnborg]

On Thu, Aug 17, 2006 at 01:15:43AM +0200, Bodo Eggert wrote:
> Sam Ravnborg <sam@ravnborg.org> wrote:
> 
> > A small nitpick about the way ou build the ekrnel module:
> > 
> > In mk_and_insmod you can replace:
> > make -C /usr/src/linux SUBDIRS=$PWD modules
> > with
> > LIBDIR=/lib/modules/`uname -r`
> > make -C $LIBDIR/source O=$LIBDIR/build SUBDIRS=`pwd` modules
> > 
> > For a normal kernel installation this will do the right thing.
> > source points to the kernel source and build point to the output
> > directory (they are often equal but not always).
> 
> Please don't tell module authors to unconditionally use `uname -r`.
> I frequently build kernels for differentd hosts, and if I don't, I'll
> certainly compile the needed modules before installing the kernel.
> Therefore /lib/modules/`uname -r` is most certainly the completely
> wrong place to look for the kernel source.
/lib/modules/`uname -r` is the general solution that works for most
people and should be at least default. It is certainly better than
/usr/src/linux.
But yes they better make it override able.

	Sam

Re: New version of ClownToolKit

[Jan Engelhardt]

>> The kernel module of the last version of the ClownToolKit has been 
>> completly rewriten. It is now readable. 
>> This kernel module permits the display of real-time plots for 
>> bandwidth of tcp/udp connexions and for qdiscs monitoring. 
>> It could be a usefull tool: http://clowncode.net 
>
>A small nitpick about the way ou build the ekrnel module:
>
>In mk_and_insmod you can replace:
>make -C /usr/src/linux SUBDIRS=$PWD modules
>with
>LIBDIR=/lib/modules/`uname -r`
>make -C $LIBDIR/source O=$LIBDIR/build SUBDIRS=`pwd` modules

Might like to replace with
make -C $LIBDIR/build M=`pwd` modules

>$PWD is supplied by the shell, so it is better to use `pwd`.

Does not harm really.


Jan Engelhardt
-- 

Re: New version of ClownToolKit

[Jan Engelhardt]

>> > LIBDIR=/lib/modules/`uname -r`
>> > make -C $LIBDIR/source O=$LIBDIR/build SUBDIRS=`pwd` modules
>> > 
>> > For a normal kernel installation this will do the right thing.
>> > source points to the kernel source and build point to the output
>> > directory (they are often equal but not always).
>> 
>> Please don't tell module authors to unconditionally use `uname -r`.
>> I frequently build kernels for differentd hosts, and if I don't, I'll
>> certainly compile the needed modules before installing the kernel.
>> Therefore /lib/modules/`uname -r` is most certainly the completely
>> wrong place to look for the kernel source.
>
>/lib/modules/`uname -r` is the general solution that works for most
>people and should be at least default. It is certainly better than
>/usr/src/linux.
>But yes they better make it override able.

In some outoftree modules of mine, the Makefile reads like this

MODULES_DIR := /lib/modules/$(shell uname -r)
KSRC_DIR    := ${MODULES_DIR}/source
KOBJ_DIR    := ${MODULES_DIR}/build

all: modules
modules:
	make -C "${KOBJ_DIR}" M="$$PWD";

and one can easily override it by calling `make MODULES_DIR=/foo/bar` 
(instead of just `make`).


Jan Engelhardt
-- 

Re: New version of ClownToolKit

[clowncoder]

Le jeudi 17 août 2006 à 09:47 +0200, Jan Engelhardt a écrit :
> >> > LIBDIR=/lib/modules/`uname -r`
> >> > make -C $LIBDIR/source O=$LIBDIR/build SUBDIRS=`pwd` modules
> >> > 
> >> > For a normal kernel installation this will do the right thing.
> >> > source points to the kernel source and build point to the output
> >> > directory (they are often equal but not always).
> >> 
> >> Please don't tell module authors to unconditionally use `uname -r`.
> >> I frequently build kernels for differentd hosts, and if I don't, I'll
> >> certainly compile the needed modules before installing the kernel.
> >> Therefore /lib/modules/`uname -r` is most certainly the completely
> >> wrong place to look for the kernel source.
> >
> >/lib/modules/`uname -r` is the general solution that works for most
> >people and should be at least default. It is certainly better than
> >/usr/src/linux.
> >But yes they better make it override able.
> 
> In some outoftree modules of mine, the Makefile reads like this
> 
> MODULES_DIR := /lib/modules/$(shell uname -r)
> KSRC_DIR    := ${MODULES_DIR}/source
> KOBJ_DIR    := ${MODULES_DIR}/build
> 
> all: modules
> modules:
> 	make -C "${KOBJ_DIR}" M="$$PWD";
> 
> and one can easily override it by calling `make MODULES_DIR=/foo/bar` 
> (instead of just `make`).
> 
> 
> Jan Engelhardt

Thank you all for all those tips, I will use this last one.

Vincent Perrier