s390 patches for -bk.

s390 patches for -bk.

[Martin Schwidefsky]

Hi Andrew,
three patches for -bk. The first one removes invoke_softirq from s390.
It was introduced for s390, so we might consider removing it again.
The rest is small bug fixes.

blue skies,
  Martin.

s390 patches for -bk.

[Martin Schwidefsky]

Hi Andrew,
another update for s390. This is the last patch-set from me for this
year. I asked Heiko Carstens (heiko.carstens@de.ibm.com) to keep an
eye on Bitkeeper for the next few weeks. If anything breaks he'll post
patches to keep s390 working.

The patches:
1) s390 core fixes
2) common i/o layer bug fixes
3) dcss segment interface changes
4) dasd driver fixes
5) z/VM monitor stream change
6) qeth network driver fixes. This patch depends on the last s390
   networking patch (s390-network-driver-patch in 2.6.10-rc2-mm4)
   which is pending because of the discussion about whether to drop
   network packets on a link failure or not. Thomas said that the
   discussion will take some more time.

blue skies,
  Martin.

Re: s390 patches for -bk.

[Andrew Morton]

Martin Schwidefsky <schwidefsky@de.ibm.com> wrote:
>
> Hi Andrew,
> another update for s390. This is the last patch-set from me for this
> year. I asked Heiko Carstens (heiko.carstens@de.ibm.com) to keep an
> eye on Bitkeeper for the next few weeks. If anything breaks he'll post
> patches to keep s390 working.
> 
> The patches:
> 1) s390 core fixes
> 2) common i/o layer bug fixes
> 3) dcss segment interface changes
> 4) dasd driver fixes
> 5) z/VM monitor stream change

Do you think these should be in 2.6.10?

> 6) qeth network driver fixes. This patch depends on the last s390
>    networking patch (s390-network-driver-patch in 2.6.10-rc2-mm4)
>    which is pending because of the discussion about whether to drop
>    network packets on a link failure or not. Thomas said that the
>    discussion will take some more time.

OK.  I'll assume that this discussion is actually proceeding somewhere -
otherwise it will take a lot more time ;)

Re: s390 patches for -bk.

[Heiko Carstens]

Hi,

> > another update for s390. This is the last patch-set from me
> > for this year. I asked Heiko Carstens
> > (heiko.carstens@de.ibm.com) to keep an eye on Bitkeeper for
> > the next few weeks. If anything breaks he'll post patches to
> > keep s390 working.
> > 
> > The patches:
> > 1) s390 core fixes
> > 2) common i/o layer bug fixes
> > 3) dcss segment interface changes
> > 4) dasd driver fixes
> > 5) z/VM monitor stream change
> 
> Do you think these should be in 2.6.10?

Yes, would be good to have them in 2.6.10.

Thanks,
Heiko

s390 patches for -bk.

[Martin Schwidefsky]

Hi Andrew,
I have 12 patches for -bk. The first 7 are bug fixes and small improvements.
The remaining 5 pathces are new features. I'd suggest to push the bug fixes
to -bk right away (probably minus the zfcp one since it isn't really small
and we are quite late into 2.6.9 already) and keep the new features back
for early 2.6.10 and add them to -mm in the meantime.

Short overview:
1) s390 core changes
2) common i/o layer bug fixes
3) dasd driver bug fixes
4) monitor stream stack reduction
5) add module parameter for dcss block driver
6) qeth driver bug fix.
7) zfcp adapter bug fixes.

8) layer 2 support for osa-express cards (qeth driver)
9) z/VM watchdog timer support (new driver)
10) z/VM log reader support (new driver)
11) add support for zero-pad and crypto express II (crypto driver)
12) add support to read z/VM monitor records (new driver)

blue skies,
  Martin.

s390 patches for -bk.

[Martin Schwidefsky]

Hi Andrew,
its time again for an s390 update. One bigger patch, splitted in
two parts so that they make it over lkml. The purpose of the big
one is to speed up system calls on s390. I managed to squeeze
about 65 cycles from each system call. This improved e.g. getpid()
from 232 to 157 cycles. As a nice side-effect it simplified the
uaccess functions considerably.

Short descriptions:
1) s390 core fixes.
2) Dasd driver fixes.
3) z/VM monitor stream module fixes.
4) Network driver fixes.
5) Tape driver fixes.
6) System call speedup part 1.
7) System call speedup part 2.

The patches applied without rejects on todays bitkeeper and
2.6.5-rc2-mm3.

blue skies,
  Martin.