2.5.59-mjb6 (scalability / NUMA patchset)

[Martin J. Bligh]

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-mjb6.bz2

additional:

http://www.aracnet.com/~fletch/linux/2.5.59/pidmaps_nodepages

Since 2.5.59-mjb5 (~ = changed, + = added, - = dropped)

Notes:
Fixed bug between NFS and dcache, and some oprofile bug on UP. 
4K stacks are back and crash dump support has arrived (thanks to Suparna 
for help merging and bufixing)

+ dcache_sunrpc					Maneesh
~ cyclone_fixes					John Stultz
+ oprofile_fixes				John Levon
+ thread_info_cleanup				Dave Hansen / Ben LaHaise
+ interrupt_stacks    				Dave Hansen / Ben LaHaise
+ stack_usage_check   				Dave Hansen / Ben LaHaise
+ 4k_stack            				Dave Hansen
+ fix_kgdb					Dave Hansen
+ stacks_from_slab				Bill Irwin
+ thread_under_page				Bill Irwin
+ lkcd						LKCD team
+ alt_sysrq_t					Russell King

Pending:
kirq interrupt balancing patch (Nitin Kamble)
auto_disable_tsc (John Stultz)
scheduler callers profiling (Anton)
PPC64 NUMA patches (Anton)
Child runs first (akpm)
Kexec
e1000 fixes
Non-PAE aligned kernel splits (Dave Hansen)
Update the lost timer ticks code
Ingo scheduler updates

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

dcache_sunrpc					Maneesh
	Fix up NFS to work properly with dcache

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

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

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

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

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

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

noframeptr					Martin Bligh
	Disable -fomit_frame_pointer

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

schedstat					Rick Lindsley
	Provide stats about the scheduler under /proc/stat

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

discontig_x440					Pat Gaughen / IBM NUMA team
	SLIT/SRAT parsing for x440 discontigmem

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

summit_smp					John Stultz
	Make Summit config options work on standard SMP

cyclone_fixes					John Stultz
	Fix up some stuff for the x440's cyclone timer

enable_cyclone					John Stultz
	Enable the x440's cyclone timer

lost_tick					John Stultz
	Detect lost timer ticks

frlock_xtime					Stephen Hemminger et al.
	Turn xtime_lock into an frlock to reduce contention 

frlock-xtime-i386				Stephen Hemminger et al.
	Turn xtime_lock into an frlock to reduce contention 

frlock-xtime-ia64				Stephen Hemminger et al.
	Turn xtime_lock into an frlock to reduce contention 

frlock-xtime-other				Stephen Hemminger et al.
	Turn xtime_lock into an frlock to reduce contention 

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	

tcp_fix						Alexey
	Stop some tcp problem with hardware checksumming (e1000?)

numa_pci_fix					Dave Hansen
	Fix a potential error in the numa pci code from Stanford Checker

pgd_ctor					William Lee Irwin
	Use slabs for pgd

pfn_to_nid					William Lee Irwin
	Turn pfn_to_nid into a macro

oprofile_fixes					John Levon
	fix a couple of bugs in oprofile

kprobes						Vamsi Krishna S
	Add kernel probes hooks to the kernel

dmc_exit1					Dave McCracken
	Speed up the exit path, pt 1.

dmc_exit2					Dave McCracken
	Speed up the exit path, pt 1.

shpte						Dave McCracken
	Shared pagetables (as a config option)

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

fix_kgdb					Dave Hansen
	Fix interaction between kgdb and 4K stacks

stacks_from_slab				William Lee Irwin
	Take kernel stacks from the slab cache, not page allocation.

thread_under_page				William Lee Irwin
	Fix THREAD_SIZE < PAGE_SIZE case

lkcd						LKCD team
	Linux kernel crash dump support

alt_sysrq_t					Russell King
	Fix up ALT+sysrq+t

-mjb						Martin Bligh
	Add a tag to the makefile