Re: 2.5.59-mm9

Re: 2.5.59-mm9

[Jochen Hein]

Andrew Morton <akpm@digeo.com> writes:

> . Adam's cleanup and cutdown of devfs has been put back in again.  We
>   really need devfs users to test this and to report, please.  (And not just
>   to me!  I'll only bounce it to Adam J.  Richter <adam@yggdrasil.com>
>   anyway)

Ok, I patched 2.5.59 with Adam's patch and it boots fine.  I miss the
file /dev/.devfsd - Debian uses that file to detect devfs and act
accordingly.  Still in the first minutes, I'll get back when Linus has
released 2.5.60 (I'll probably switch back to a stock kernel then).

Jochen

-- 
#include <~/.signature>: permission denied

Re: 2.5.59-mm9

[Georgi Chorbadzhiyski]

Jochen Hein wrote:
> Andrew Morton <akpm@digeo.com> writes:
> 
> 
>>. Adam's cleanup and cutdown of devfs has been put back in again.  We
>>  really need devfs users to test this and to report, please.  (And not just
>>  to me!  I'll only bounce it to Adam J.  Richter <adam@yggdrasil.com>
>>  anyway)
> 
> 
> Ok, I patched 2.5.59 with Adam's patch and it boots fine.  I miss the
> file /dev/.devfsd - Debian uses that file to detect devfs and act
> accordingly.  Still in the first minutes, I'll get back when Linus has

Slackware does the same.

> released 2.5.60 (I'll probably switch back to a stock kernel then).


-- 
Georgi Chorbadzhiyski
http://georgi.unixsol.org/

Re: 2.5.59-mm9

[Adam J. Richter]

On 08 Feb 2003, Georgi Chorbadzhiyski wrote:
>Jochen Hein wrote:
>> Andrew Morton <akpm@digeo.com> writes:
>>>. Adam's cleanup and cutdown of devfs has been put back in again.  We
>>>  really need devfs users to test this and to report, please.  (And not just
>>>  to me!  I'll only bounce it to Adam J.  Richter <adam@yggdrasil.com>
>>>  anyway)
>> 
>> Ok, I patched 2.5.59 with Adam's patch and it boots fine.  I miss the
>> file /dev/.devfsd - Debian uses that file to detect devfs and act
>> accordingly.  Still in the first minutes, I'll get back when Linus has

>Slackware does the same.

	Distributions that want to do something different for devfs
can parse /proc/mounts, or, less reliably, do statfs("/dev", &statfs_buf)
and look at statfs_buf.f_type.  So, you still have this ability without
the need for additional kernel code.

	It's worth noting that some devfs users may want the non-devfs
behavior (which I assume means creating /dev files during some
installation process) because they may have a script to save /dev
before shutdown and restore their additional /dev nodes at boot, so
you probably want to centralize this decision in some little script
anyhow.  The devfsd (for the stock devfs) has a couple of commands
designed for this, although this can just as easily be done in scripts
for boot and shutdowns.

	Also, I suppose that checking for /dev/.devfsd is an easy way
to detect _which_ devfs you are using, although I don't know if such a
check is useful, since you could start devfsd unconditionally and it
should just exit if the old devfs is not present.

Adam J. Richter     __     ______________   575 Oroville Road
adam@yggdrasil.com     \ /                  Milpitas, California 95035
+1 408 309-6081         | g g d r a s i l   United States of America
                         "Free Software For The Rest Of Us."

Re: 2.5.59-mm9

[Andrew Morton]

Daniel Jacobowitz <dan@debian.org> wrote:
>
> On Fri, Feb 07, 2003 at 03:03:50AM -0800, Andrew Morton wrote:
> > Andrew Morton <akpm@digeo.com> wrote:
> > >
> > > http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.59/2.5.59-mm9/
> > 
> > I've taken this down.
> > 
> > Ingo, there's something bad in the signal changes in Linus's current tree.
> > 
> > mozilla won't display, and is unkillable:
> 
> Yeah, I'm seeing hangs in rt_sigsuspend under GDB also.  Thanks for
> saying that they show up without ptrace; I hadn't been able to
> reproduce them without it.
> 
> Something is causing realtime signals to drop.

OK.  Looks like Linus is hot on the trail.

BTW, some nice people have been sending in smalldevfs testing results
(successful).  I've put that patch back up at

http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.59/smalldevfs.patch

for other testers.  It applies to 2.5.59 base.

And it is not clear why I copied Ingo on the signal thing, when it is not he
who is working that code.  Sorry about that.

Re: 2.5.59-mm9

[Daniel Jacobowitz]

On Fri, Feb 07, 2003 at 03:03:50AM -0800, Andrew Morton wrote:
> Andrew Morton <akpm@digeo.com> wrote:
> >
> > http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.59/2.5.59-mm9/
> 
> I've taken this down.
> 
> Ingo, there's something bad in the signal changes in Linus's current tree.
> 
> mozilla won't display, and is unkillable:

Yeah, I'm seeing hangs in rt_sigsuspend under GDB also.  Thanks for
saying that they show up without ptrace; I hadn't been able to
reproduce them without it.

Something is causing realtime signals to drop.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

Re: 2.5.59-mm9

[Andrew Morton]

Andrew Morton <akpm@digeo.com> wrote:
>
> http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.59/2.5.59-mm9/

I've taken this down.

Ingo, there's something bad in the signal changes in Linus's current tree.

mozilla won't display, and is unkillable:

mnm:/home/akpm> ps aux|grep moz               
akpm      1462  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1463  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1469  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1470  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1471  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      9024  0.0  0.0  3260  556 pts/19   S    02:32   0:00 grep moz
mnm:/home/akpm> kill -9 1462 1463 1469 1470 1471
mnm:/home/akpm> ps aux|grep moz                 
akpm      1462  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1463  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1469  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1470  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      1471  0.0  2.5 44568 23244 ?       S    02:26   0:00 /usr/lib/mozilla-1.3a/mozilla-bin
akpm      9028  0.0  0.0  3260  556 pts/19   S    02:33   0:00 grep moz
mnm:/home/akpm> ps axo pid,comm,wchan|grep moz
 1462 mozilla-bin      schedule_timeout
 1463 mozilla-bin      rt_sigsuspend
 1469 mozilla-bin      rt_sigsuspend
 1470 mozilla-bin      rt_sigsuspend
 1471 mozilla-bin      rt_sigsuspend


That's just from bringing up X and starting mozilla 1.13a.  Happens every time.

2.5.59-mm9

[Andrew Morton]

http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.59/2.5.59-mm9/

. Adam's cleanup and cutdown of devfs has been put back in again.  We
  really need devfs users to test this and to report, please.  (And not just
  to me!  I'll only bounce it to Adam J.  Richter <adam@yggdrasil.com>
  anyway)

  Adam has a userspace helper app `devfs-helper' at

  	ftp://ftp.yggdrasil.com/pub/dist/device_control/devfs/

. The I/O scheduler changes here are stable now.  All-round peformance is
  OK.

  I've been using it on the desktop for a week.  Certain operations are
  noticeably different; for example a big `cvs co' would previously have had
  several-second stalls every 20 seconds or so.  Now, things slow down but it
  keeps going.  I'm sure the overall runtime will be slightly increased, but
  overall the decreased read latency is good.

. dcache_rcu has been put back.



Changes since 2.5.59-mm8:


-reiserfs-readpages.patch
-fadvise.patch
-auto-unplug.patch
-less-unplugging.patch
-kirq.patch
-kirq-up-fix.patch
-agp-warning-fix.patch
-prune-icache-stats.patch
-vma-file-merge.patch
-mmap-whitespace.patch
-read_cache_pages-cleanup.patch
-remove-GFP_HIGHIO.patch
-wli-11_pgd_ctor.patch
-wli-11_pgd_ctor-update.patch
-smaller-slab-batches.patch
-printk-locking.patch
-hangcheck-timer.patch
-jbd-documentation.patch
-sendfile-security-hooks.patch
-mmzone-parens.patch
-no_space_in_slabnames.patch
-remove-will_become_orphaned_pgrp.patch
-MAX_IO_APICS-ifdef.patch
-dac960-error-retry.patch
-topology-remove-underbars.patch
-put_user-warning-fix.patch
-hash-warnings.patch
-mark_inode_dirty-race.patch
-lost-tick.patch
-seq_file-page-defn.patch
-scsi-iothread.patch
-writeback-sync-cleanup.patch
-dont-wait-on-inode.patch
-unlink-latency-fix.patch
-pin_page-fix.patch
-pin_page-pmd.patch
-frlock-xtime.patch
-frlock-xtime-i386.patch
-frlock-xtime-ia64.patch
-frlock-xtime-other.patch
-seqlock.patch
-do_gettimeofday-speedup.patch
-default_idle-speedup.patch
-pte_chain_alloc-fixes.patch
-hugetlbfs-set_page_dirty.patch
-compound-pages.patch
-compound-pages-hugetlb.patch
-hugetlbfs-get_unmapped_area.patch
-hugetlbfs-truncate-fix.patch
-hugetlbfs-i_size-fix.patch
-hugetlbfs-cleanup.patch
-hugetlbfs-nopage-cleanup.patch
-hugetlbfs-fault-fix.patch
-hugetlbpage-cleanup.patch
-hugetlb_vmtruncate-fixes.patch
-hugetlb-mremap-fix.patch
-mremap-cleanup.patch
-up-spinlock-debugging.patch

 Merged

+seqlock-fixes.patch

 seqlock tweak

+profiler-per-cpu.patch

 Use per-cpu data for the kernel profiler

+disassociate_tty-fix.patch

 TTY layer race fix

+crc32-speedup.patch

 Faster crc32 implementation

+report-lost-ticks.patch

 Add some controls to the ia32 lost tick detector.

-scheduler-update.patch
+sched-2.5.59-F3.patch

 Ingo's latest HT-aware CPU scheduler changes

+generic_file_aio_write_nolock-overflow-fix.patch

 Fix huge writes on 64-bit machines.

+lockd-lockup-fix.patch

 Maybe fix a knfsd deadlock

+ll_rw_block-fix.patch

 Fix obscure incorrectness when ll_rw_block() is used for IS_SYNC
 operations.

+rcu-stats.patch

 Resusrrect RCU statistics in /proc

+dcache_rcu-fast_walk-revert.patch
+dcache_rcu-main.patch

 Use RCU technology for relieving dcache_lock stress

+cyclone-fixes.patch
+enable-timer_cyclone.patch

 Add support for the x440's timer

+vxfs-memleak-fix.patch

 Fix a memory leak

+smalldevfs.patch

 Simplified devfs

+remove-journal_try_start.patch

 Remove the ext3 code which attempts to avoid blocking kswapd on
 journal_start().

+dac960-range-fix.patch

 DAC960 fix.

+DAC960-maintainer.patch

 Add David

+sys_exit_group-warning-fix.patch

 Fix a compile warning

+nforce2-support.patch

 Support nforce2 IDE controllers




All 43 patches:

linus.patch

seqlock-fixes.patch

kgdb.patch

devfs-fix.patch

ptrace-flush.patch
  Subject: [PATCH] ptrace on 2.5.44

buffer-debug.patch
  buffer.c debugging

warn-null-wakeup.patch

htlb-2.patch
  hugetlb: fix MAP_FIXED handling

ext3-truncate-ordered-pages.patch
  ext3: explicitly free truncated pages

profiler-per-cpu.patch
  Subject: Re: [patch] Make prof_counter use per-cpu areas patch 1/4 -- x86 arch

oprofile-p4.patch

oprofile_cpu-as-string.patch
  oprofile cpu-as-string

disassociate_tty-fix.patch
  Subject: [PATCH][RESEND 3] disassociate_ctty SMP fix

epoll-update.patch
  epoll timeout and syscall return types ...

mandlock-oops-fix.patch
  ftruncate/truncate oopses with mandatory locking

reiserfs_file_write.patch
  Subject: reiserfs file_write patch

user-process-count-leak.patch
  fix current->user->processes leak

misc.patch
  misc fixes

numaq-ioapic-fix2.patch
  NUMAQ io_apic programming fix

deadline-np-42.patch
  (undescribed patch)

deadline-np-43.patch
  (undescribed patch)

batch-tuning.patch
  I/O scheduler tuning

starvation-by-read-fix.patch
  fix starvation-by-readers in the IO scheduler

crc32-speedup.patch
  crc32 improvements for 2.5

scheduler-tunables.patch
  scheduler tunables

sched-2.5.59-F3.patch
  HT scheduler, sched-2.5.59-F3

rml-scheduler-update2.patch
  rml scheduler tree

report-lost-ticks.patch
  make lost-tick detection more informative

generic_file_aio_write_nolock-overflow-fix.patch
  generic_file_write() overflow fix

lockd-lockup-fix.patch
  Subject: Re: Fw: Re: 2.4.20 NFS server lock-up (SMP)

ll_rw_block-fix.patch
  Fix ll_rw_block() when used for data integrity

rcu-stats.patch
  RCU statistics reporting

dcache_rcu-fast_walk-revert.patch
  dcache_rcu: revert fast_walk code

dcache_rcu-main.patch
  dcache_rcu

cyclone-fixes.patch
  Cyclonetimer fixes

enable-timer_cyclone.patch
  Enable timer_cyclone code

vxfs-memleak-fix.patch
  fix leaks in vxfs_read_fshead()

smalldevfs.patch
  smalldevfs

remove-journal_try_start.patch
  ext3: Remove journal_try_start()

dac960-range-fix.patch
  Subject: [PATCH] DAC960 Stanford Checker fix

DAC960-maintainer.patch
  Add David Olien MAINTAINERs for DAC960

sys_exit_group-warning-fix.patch

nforce2-support.patch
  nforce2 IDE support for the amd74xx driver