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Subject2.5.59-mjb1 (scalability / NUMA patchset)

The patchset contains mainly scalability and NUMA stuff, and anything
else that stops things from irritating me. It's meant to be pretty stable,
not so much a testing ground for new stuff.

I'd be very interested in feedback from anyone willing to test on any
platform, however large or small.

http://www.aracnet.com/~fletch/linux/2.5.59/patch-2.5.59-mjb1.bz2

Since 2.5.58-mjb2 (~ = changed, + = added, - = dropped)

Notes:
Lots of good stuff merged up with Linus. x440 distcontigmem seems to have
problems in some circumstances, but APCI should work in this release.

merged with Linus:

- summit1 James Cleverdon / John Stultz
- summit2 James Cleverdon / John Stultz
- summit3 James Cleverdon / John Stultz
- summit4 James Cleverdon / John Stultz
- summit5 James Cleverdon / John Stultz
- min_numasched Martin J. Bligh
- numasched_ilb Michael Hohnbaum
- numa_rebalancer Erich Focht
- vm_enough_memory Martin J. Bligh

Other:

+ ingosched Ingo Molar
~ sched_tunables Robert Love
+ acpi_x440_hack Anonymous Coward
+ numaq_ioapicids William Lee Irwin
+ oprofile_p4 John Levon
+ starfire Ion Badulescu

Pending:
Notsc automatic enablement (someone, please ... anyone?)
scheduler callers profiling (Anton)
PPC64 NUMA patches (Anton)
Lockless xtime structures (Andi)
Child runs first (akpm)
New qlogic driver (Badari ??)


dcache_rcu Dipankar / Maneesh
Use RCU type locking for the dentry cache.

early_printk Dave Hansen et al.
Allow printk before console_init

confighz Andrew Morton / Dave Hansen
Make HZ a config option of 100 Hz or 1000 Hz

config_page_offset Dave Hansen / Andrea
Make PAGE_OFFSET a config option

vmalloc_stats Dave Hansen
Expose useful vmalloc statistics

ingosched Ingo Molnar
Modify NUMA scheduler to have independant tick basis.

sched_tunables Robert Love
Provide tunable parameters for the scheduler (+ NUMA scheduler)

local_pgdat William Lee Irwin
Move the pgdat structure into the remapped space with lmem_map

notsc Martin Bligh
Enable notsc option for NUMA-Q (new version for new config system)

numameminfo Martin Bligh / Keith Mannthey
Expose NUMA meminfo information under /proc/meminfo.numa

kgdb Andrew Morton / Various People
The older version of kgdb, synched with 2.5.54-mm1

noframeptr Martin Bligh
Disable -fomit_frame_pointer

thread_info_cleanup (4K stacks pt 1) Dave Hansen / Ben LaHaise
Prep work to reduce kernel stacks to 4K

interrupt_stacks (4K stacks pt 2) Dave Hansen / Ben LaHaise
Create a per-cpu interrupt stack.

stack_usage_check (4K stacks pt 3) Dave Hansen / Ben LaHaise
Check for kernel stack overflows.

4k_stack (4K stacks pt 4) Dave Hansen
Config option to reduce kernel stacks to 4K

mpc_apic_id Martin J. Bligh
Fix null ptr dereference (optimised away, but ...)

doaction Martin J. Bligh
Fix cruel torture of macros and small furry animals in io_apic.c

discontig_x440 Pat Gaughen / Chandra
SLIT/SRAT parsing for x440 discontigmem

topo_hack Pat Gaughen
Disable some topo stuff for Summit because we're cowards.

acpi_x440_hack Anonymous Coward
Stops x440 crashing, but owner is ashamed of it ;-)

numaq_ioapicids William Lee Irwin
Stop 8 quad NUMA-Qs from panicing due to phys apicid "exhaustion".

oprofile_p4 John Levon
Updates for oprofile for P4s. Needs new userspace tools.

starfire Ion Badulescu
64 bit aware starfire driver

-mjb Martin Bligh
Add a tag to the makefile

-
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