Teach the generic domains builder about SMT, and consolidate all
  architecture specific domain code into that.  Also, the SD_*_INIT macros can
  now be redefined by arch code without duplicating the entire setup code. 
  This can be done by defining ARCH_HASH_SCHED_TUNE.

  The generic builder has been simplified with the addition of a helper
  macro which will probably prove to be useful to arch specific code as well
  and should be exported if that is the case.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>

From: Matthew Dobson <colpatch@us.ibm.com>

  The attached patch is against 2.6.8-rc2-mm2, and removes Nick's
  conditional definition & population of cpu_sibling_map[] in favor of my
  unconditional ones.  This does not affect how cpu_sibling_map is used, just
  gives it broader scope.

From: Nick Piggin <nickpiggin@yahoo.com.au>

  Small fix to sched-consolidate-domains.patch picked up by

From: Suresh <suresh.b.siddha@intel.com>

  another sched consolidate domains fix

From: Nick Piggin <nickpiggin@yahoo.com.au>

  Don't use cpu_sibling_map if !CONFIG_SCHED_SMT

  This one spotted by Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- remove the hotplug lock from around much of fork(), and re-copy the
  cpus_allowed mask to solve the hotplug race cleanly.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This removes balance on clone capability altogether.  I told Andi we wouldn't
remove it yet, but provided it is in a single small patch, he mightn't get too
upset.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Don't balance on clone by default.

Balance on clone has a number of trivial performance failure cases, but it was
needed to get decent OpenMP performance on NUMA (Opteron) systems.  Not doing
child-runs-first for new threads also solves this problem in a nicer way
(implemented in a previous patch).
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add some likely/unliklies, a for_each_cpu => for_each_cpu_online, and close
the sched_exit race.

From: Ingo Molnar <mingo@elte.hu>

  fix a typo in a previous patch breaking RT scheduling & interactivity.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Ingo Molnar <mingo@elte.hu>

RT tasks are unlikely, move this into rt_task() instead of open-coding it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

 - fix two stale comments
 - cleanup
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Now that init_idle does not remove tasks from the runqueue, those
architectures that use kernel_thread instead of copy_process for the idle
task will break.  To fix, ensure that CLONE_IDLETASK tasks are not put on
the runqueue in the first place.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Move balancing and child-runs-first logic from fork.c into sched.c where
it belongs.

* Consolidate wake_up_forked_process and wake_up_forked_thread into
  wake_up_new_process, and pass in clone_flags as suggested by Linus.  This
  removes a lot of code duplication and allows all logic to be handled in that
  function.

* Don't do balance-on-clone balancing for vfork'ed threads.

* Don't do set_task_cpu or balance one clone in wake_up_new_process. 
  Instead do it in sched_fork to fix set_cpus_allowed races.

* Don't do child-runs-first for CLONE_VM processes, as there is obviously no
  COW benifit to be had.  This is a big one, it enables Andi's workload to run
  well without clone balancing, because the OpenMP child threads can get
  balanced off to other nodes *before* they start running and allocating
  memory.

* Rename sched_balance_exec to sched_exec: hide the policy from the API.


From: Ingo Molnar <mingo@elte.hu>

  rename wake_up_new_process -> wake_up_new_task.

  in sched.c we are gradually moving away from the overloaded 'process' or
  'thread' notion to the traditional task (or context) naming.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Clean up init_idle to not use wake_up_forked_process, then undo all the stuff
that call does.  Instead, do everything in init_idle.

Make double_rq_lock depend on CONFIG_SMP because it is no longer used on UP.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The main benefit is that with the default HZ=1000 nice +19 tasks now get 5
msecs of timeslices, so the ratio of CPU use is linear.  (nice 0 task gets
20 times more CPU time than a nice 19 task.  Prior this change the ratio
was 1:10)

another effect is that nice 0 tasks now get a round 100 msecs of timeslices
(as intended), instead of 102 msecs.

here's a table of old/new timeslice values, for HZ=1000 and 100:

                      HZ=1000         (   HZ=100   )
                    old    new        ( old    new )

        nice -20:   200    200        ( 200    200 )
        nice -19:   195    195        ( 190    190 )
        ...
        nice 0:     102    100        ( 100    100 )
        nice 1:      97     95        (  90     90 )
        nice 2:      92     90        (  90     90 )
        ...
        nice 17:     19     15        (  10     10 )
        nice 18:     14     10        (  10     10 )
        nice 19:     10      5        (  10     10 )

i've tested the patch on x86.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch changes hose_list from a simple linked list to a
"list.h"-style list.  This is in preparation for the runtime
addition/removal of PCI Host Bridges.
Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

On some platforms (notably power5) you can't enable surveillance
(firmware/service processor watchdog) from the kernel - you have to do
it in the firmware.

This patch changes enable_surveillance() to make the message that is
printed in this situation more informative.  Additionaly, the rtas_call
was changed to rtas_set_indicator so as to avoid having to handle
RTAS_BUSY returns.
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

The code doesn't actually _care_ about 32/64-bit issues,
only about F_SETLK vs F_SETLKW, and the F_SETLK64 doesn't
exist except as a compatibility thing on 64-bit architectures
(since the regular one already _is_ 64-bit, of course).

into fys.uio.no:/home/linux/bitkeeper/nfsclient-2.6

   server are not allowed to be interrupted as that may result in the
   client and server disagreeing.

   recall ability.
Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

   NFS4ERR_CB_PATH_DOWN error.

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

into fys.uio.no:/home/linux/bitkeeper/work/nfsclient-2.6

into fys.uio.no:/home/linux/bitkeeper/nfsclient-2.6

   rather than an inode argument. Fix up nfs_instantiate() and
   _nfs4_do_open to use this since doing a new lookup might be racy.

   NFS4ERR_DELAY on the GETATTR call.

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

   that hangs off filp->private_data. As a side effect, this also
   cleans up the NFSv4 private file state info.
Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

   operations by using a per-server read/write semaphore.
Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

   NFS4ERR_DELAY properly.
Signed-off-by: Trond Myklebust <trond.myklebust@fys.uio.no>

into fys.uio.no:/home/linux/bitkeeper/nfsclient-2.6