2.5.59-mjb1 (scalability / NUMA patchset)

From: Martin J. Bligh (mbligh@aracnet.com)
Date: Tue Jan 21 2003 - 03:19:11 EST

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.


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

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


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

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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