2004-06-09 12:39:52

by Jörn Engel

[permalink] [raw]
Subject: [STACK] weird code in some isdn drivers

Karsten, Kai,

while I agree that this is a measurement bug, it's not exacly fun to
look at the code in question. Can you please find a solution for
hscx_irq.c?

Either transform it into a header and uninline some of the longer
functions or make the functions global and add the necessary header
and Makefile-line. In any case, I don't like to see something like
#include "hscx_irq.c"

stackframes for call path too long (268435490):
size function
0 IsdnCardState->irq_func
268435466 teles3_interrupt
24 hscx_empty_fifo
0 read_fifo
0 insb

J?rn

--
People will accept your ideas much more readily if you tell them
that Benjamin Franklin said it first.
-- unknown


2004-06-09 13:18:56

by Karsten Keil

[permalink] [raw]
Subject: Re: [STACK] weird code in some isdn drivers

On Wed, Jun 09, 2004 at 02:36:33PM +0200, J?rn Engel wrote:
> Karsten, Kai,
>
> while I agree that this is a measurement bug, it's not exacly fun to
> look at the code in question. Can you please find a solution for
> hscx_irq.c?

HiSax and I4L is in bugfix only mode, since it will replaced
by other drivers. So I do not want waste time for soon obsolate code.

>
> Either transform it into a header and uninline some of the longer
> functions or make the functions global and add the necessary header
> and Makefile-line. In any case, I don't like to see something like
> #include "hscx_irq.c"
>

Yes I agree that it looks ugly and make not much more sense with today
CPUs and compilers. In the beginning of the development (on 386/486) and
with early GCC (inline was often broken) it did and reduced some
ping times so far I remember. (~1997)

> stackframes for call path too long (268435490):
> size function
> 0 IsdnCardState->irq_func
> 268435466 teles3_interrupt
> 24 hscx_empty_fifo
> 0 read_fifo
> 0 insb
>
> J?rn
>
> --
> People will accept your ideas much more readily if you tell them
> that Benjamin Franklin said it first.
> -- unknown

--
Karsten Keil
SuSE Labs
ISDN development

2004-06-09 13:31:29

by Jörn Engel

[permalink] [raw]
Subject: Re: [STACK] weird code in some isdn drivers

On Wed, 9 June 2004 15:16:28 +0200, Karsten Keil wrote:
> On Wed, Jun 09, 2004 at 02:36:33PM +0200, J?rn Engel wrote:
> > Karsten, Kai,
> >
> > while I agree that this is a measurement bug, it's not exacly fun to
> > look at the code in question. Can you please find a solution for
> > hscx_irq.c?
>
> HiSax and I4L is in bugfix only mode, since it will replaced
> by other drivers. So I do not want waste time for soon obsolate code.

Valid solution. Any date as to when the new drivers will be
available?

J?rn

--
To my face you have the audacity to advise me to become a thief - the worst
kind of thief that is conceivable, a thief of spiritual things, a thief of
ideas! It is insufferable, intolerable!
-- M. Binet in Scarabouche

2004-06-09 14:18:16

by Karsten Keil

[permalink] [raw]
Subject: Re: [STACK] weird code in some isdn drivers

On Wed, Jun 09, 2004 at 03:30:03PM +0200, J?rn Engel wrote:
> On Wed, 9 June 2004 15:16:28 +0200, Karsten Keil wrote:
> > On Wed, Jun 09, 2004 at 02:36:33PM +0200, J?rn Engel wrote:
> > > Karsten, Kai,
> > >
> > > while I agree that this is a measurement bug, it's not exacly fun to
> > > look at the code in question. Can you please find a solution for
> > > hscx_irq.c?
> >
> > HiSax and I4L is in bugfix only mode, since it will replaced
> > by other drivers. So I do not want waste time for soon obsolate code.
>
> Valid solution. Any date as to when the new drivers will be
> available?
>

I hope that I have enough time to fix the known issues in mISDN this month
and implement some more hardware, after this it should go into mainline.

--
Karsten Keil
SuSE Labs
ISDN development