[patch] O(1) scheduler, -H7

[patch] O(1) scheduler, -H7

[Ingo Molnar]

the -H7 patch is available:

    http://redhat.com/~mingo/O(1)-scheduler/sched-O1-2.5.2-pre11-H7.patch
    http://redhat.com/~mingo/O(1)-scheduler/sched-O1-2.4.17-H7.patch

there is an important SMP fix in this release, found by Anton Blanchard:
double-spin_unlock()ing triggered oopses on high-end SMP boxes.

stability status: all reported problems were fixed by -H6, the only
problem remaining was Anton's SMP crashes, which should be fixed in this
-H7 patch.

Changes between -H6 and -H7:

- Anton Blanchard: fix double spin_unlock in sched.c. This fixes
  a high-end SMP oops he saw.

- William Lee Irwin III: fix mwave's ->nice code.

- cleanup: mmu_context.h renamed to sched.h, as suggested by
  Richard Henderson.

- added a irqs_enabled() macro to the x86 tree, to simplify irq.c.

Bug reports, comments, suggestions welcome.

	Ingo

Re: [patch] O(1) scheduler, -H7

[Stephan von Krawczynski]

On Sun, 13 Jan 2002 20:34:39 +0100 (CET)
Ingo Molnar <mingo@elte.hu> wrote:

> 
> the -H7 patch is available:
> 
>     http://redhat.com/~mingo/O(1)-scheduler/sched-O1-2.5.2-pre11-H7.patch
>     http://redhat.com/~mingo/O(1)-scheduler/sched-O1-2.4.17-H7.patch

Sorry ingo,

this does not compile under 2.4.17:

make[2]: Entering directory `/usr/src/linux/kernel'
gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes
-Wno-trigrap hs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -pipe
-mpreferred-s tack-boundary=2 -march=i686    -fno-omit-frame-pointer -c -o
sched.o sched.c sched.c:21: asm/sched.h: No such file or directory
sched.c: In function `context_switch':
sched.c:430: warning: implicit declaration of function `enter_lazy_tlb'
sched.c:432: warning: implicit declaration of function `switch_mm'
sched.c: In function `schedule':
sched.c:785: warning: implicit declaration of function
`sched_find_first_zero_bi t'
make[2]: *** [sched.o] Error 1
make[2]: Leaving directory `/usr/src/linux/kernel'
make[1]: *** [first_rule] Error 2
make[1]: Leaving directory `/usr/src/linux/kernel'
make: *** [_dir_kernel] Error 2

Regards,
Stephan

Re: [patch] O(1) scheduler, -H7

[Ingo Molnar]

On Sun, 13 Jan 2002, Stephan von Krawczynski wrote:

> sched.o sched.c sched.c:21: asm/sched.h: No such file or directory

Please re-download the 2.4.17 -H7 patch, i've fixed this.

	Ingo

Re: [patch] O(1) scheduler, -H7

[Stephan von Krawczynski]

On Sun, 13 Jan 2002 20:58:12 +0100 (CET)
Ingo Molnar <mingo@elte.hu> wrote:

> 
> On Sun, 13 Jan 2002, Stephan von Krawczynski wrote:
> 
> > sched.o sched.c sched.c:21: asm/sched.h: No such file or directory
> 
> Please re-download the 2.4.17 -H7 patch, i've fixed this.

Hello Ingo,

did it. Applied. Compiled ok.

BUT:
I tried it on top of 2.4.18-pre3, it applied clean with some offsets. Only my
machine hangs during boot on first network packets (simple pings). This is
reproducable.

I am retrying with plain 2.4.17 + H7 and be back in few minutes...

Regards,
Stephan

Re: [patch] O(1) scheduler, -H7

[Stephan von Krawczynski]

On Sun, 13 Jan 2002 20:58:12 +0100 (CET)
Ingo Molnar <mingo@elte.hu> wrote:

> 
> On Sun, 13 Jan 2002, Stephan von Krawczynski wrote:
> 
> > sched.o sched.c sched.c:21: asm/sched.h: No such file or directory
> 
> Please re-download the 2.4.17 -H7 patch, i've fixed this.

Ok, I tried on top of vanilla 2.4.17 and it works.

Seems like 2.4.18-pre3 and H7 don't like each other :-)

Regards,
Stephan

Re: [patch] O(1) scheduler, -H7

[David B. Stevens]

It works fine on top of 2.4.18-pre3 in UP config.

This e-maile is from such a system.

Cheers,
  Dave



Stephan von Krawczynski wrote:
> 
> On Sun, 13 Jan 2002 20:58:12 +0100 (CET)
> Ingo Molnar <mingo@elte.hu> wrote:
> 
> >
> > On Sun, 13 Jan 2002, Stephan von Krawczynski wrote:
> >
> > > sched.o sched.c sched.c:21: asm/sched.h: No such file or directory
> >
> > Please re-download the 2.4.17 -H7 patch, i've fixed this.
> 
> Ok, I tried on top of vanilla 2.4.17 and it works.
> 
> Seems like 2.4.18-pre3 and H7 don't like each other :-)
> 
> Regards,
> Stephan
> 
> -
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Re: [patch] O(1) scheduler, -H7

[Stephan von Krawczynski]

On Sun, 13 Jan 2002 14:04:51 -0500
"David B. Stevens" <dsteven3@maine.rr.com> wrote:

> It works fine on top of 2.4.18-pre3 in UP config.

Sorry, I should have attached a short summary of my system:

dual PIII-1GHz / board Asus CUV4X-D (via chipset, no I did not encounter any
problems so far) / 2 GB RAM with highmem support on"Network" refers to tulip
quad-card in this case. It really hangs in _every_ boot at the same operation
(a ping).

Regards,
Stephan
 
> This e-maile is from such a system.
> 
> Cheers,
>   Dave
> 
> Stephan von Krawczynski wrote:
> > 
> > On Sun, 13 Jan 2002 20:58:12 +0100 (CET)
> > Ingo Molnar <mingo@elte.hu> wrote:
> > 
> > >
> > > On Sun, 13 Jan 2002, Stephan von Krawczynski wrote:
> > >
> > > > sched.o sched.c sched.c:21: asm/sched.h: No such file or directory
> > >
> > > Please re-download the 2.4.17 -H7 patch, i've fixed this.
> > 
> > Ok, I tried on top of vanilla 2.4.17 and it works.
> > 
> > Seems like 2.4.18-pre3 and H7 don't like each other :-)
> > 
> > Regards,
> > Stephan