2.5.62-mjb3 (scalability / NUMA patchset)

["Martin J. Bligh" <mbligh@aracnet.com>]

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.

ftp://ftp.kernel.org/pub/linux/kernel/people/mbligh/2.5.62/patch-2.5.62-mjb
3.bz2

additional:

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

Since 2.5.62-mjb2 (~ = changed, + = added, - = dropped)

Notes: Fixes some critical scheduler hangs.

- discontig_x440				Pat Gaughen / IBM NUMA team
+ early_ioremap					Dave Hansen
+ x440disco_A0					Pat Gaughen / IBM NUMA team
+ fix_was_sched					Ingo / wli / Rick Lindsley
+ no_kirq					Martin J. Bligh
+ auto_disable_tsc				John Stultz
+ cleaner_inodes				Andrew Morton

Pending:
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

Present in this patch:

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)

early_ioremap					Dave Hansen
	Provide ioremap in very early boot when we only have 8Mb address space

x440disco_A0					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 ;-)

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

pfn_to_nid					William Lee Irwin
	Turn pfn_to_nid into a macro

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

percpu_loadavg					Martin J. Bligh
	Provide per-cpu loadaverages, and real load averages

irq_affinity					Martin J. Bligh
	Workaround for irq_affinity on clustered apic mode systems (eg x440)

kirq_clustered_fix				Dave Hansen / Martin J. Bligh
	Fix kirq for clustered apic systems (eg x440)

fix_was_sched					Ingo / wli / Rick Lindsley
	Fix scheduler hangs from deadlocks

no_kirq						Martin J. Bligh
	Allow disabling of kirq to work properly

auto_disable_tsc				John Stultz
	Automatically disable the TSC for NUMA-Q

cleaner_inodes					Andrew Morton
	Make noatime filesystems more efficient

-mjb						Martin J. Bligh
	Add a tag to the makefile