2.5.72-mjb2

2.5.72-mjb2

[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.

ftp://ftp.kernel.org/pub/linux/kernel/people/mbligh/2.5.72/patch-2.5.72-mjb2.bz2

additional patches that can be applied if desired:

(these three form the qlogic feral driver)
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.72/2.5.72-mm1/broken-out/linux-isp.patch
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.72/2.5.72-mm1/broken-out/isp-update-1.patch
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.72/2.5.72-mm1/broken-out/isp-remove-pci_detect.patch

Since 2.5.72-mjb1 (~ = changed, + = added, - = dropped)

Notes: I applied lots of patches which affect similar areas. They all went on
without any problems. That's a worse omen than waking up in a pentagram
full of black candles ... chances I haven't managed to screw something up are
minimal. Go ahead, break it. Make my day.

Now in Linus' tree:

New:

reslabify-pmd-pgd				William Lee Irwin
	Stick things back in the slab. Or something.
separate_pmd					Dave Hansen
	Separate kernel pmd per task.
banana_split					Dave Hansen
	Make PAGE_OFFSET play twister and limbo.
percpu_real_loadavg				Dave Hansen / Martin J. Bligh
	Tell me what the real load average is, and tell me per cpu.
numa_large_pages				William Lee Irwin
	Place large pages in sensible places.
list-of-lists					Martin J. Bligh / Dave McCracken
	Sort the list of vmas off an address space in a fancy-pants way.
nolock						Dave McCracken
	Nah, we don't like locks.
proc_pid_readdir				Manfred Spraul
	Make proc_pid_readdir more efficent. Allegedly.
mbind_part1					Matt Dobson
	Bind some memory for NUMA.
mbind_part2					Matt Dobson
	Bind some more memory for NUMA.
per_node_rss					Matt Dobson
	Track which nodes tasks mem is on, so sched can be sensible.
sysfs_fix					Pat Mochel
	Fix something in sysfs, I forget what. Dave was complaining.

Dropped:

percpu_loadavg					Martin J. Bligh
	In favour of cleaned up version from Dave.


Pending:
Hyperthreaded scheduler (Ingo Molnar)
scheduler callers profiling (Anton or Bill Hartner)
Child runs first (akpm)
Kexec
e1000 fixes
Update the lost timer ticks code
pidmaps_nodepages (Dave Hansen)

Present in this patch:

proc_lock					Martin J. Bligh
	Fix proc_lock handling and SDET hangs.

early_printk					Dave Hansen / Keith Mannthey
	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

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

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

schedstat2					Rick Lindsley
	Provide more stats about the scheduler under /proc/schedstat

schedstat-scripts				Rick Lindsley
	Provide some scripts for schedstat analysis under scripts/

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

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

partial_objrmap					Dave McCracken
	Object based rmap for filebacked pages.

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

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

4k_stacks_vs_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

spinlock_inlining				Andrew Morton & Martin J. Bligh
	Inline spinlocks for profiling. Made into a ugly config option by me.

lockmeter					John Hawkes / Hanna Linder
	Locking stats.

reiserfs_dio					Mingming Cao
	DIO for Reiserfs

sched_interactive				Ingo Molnar
	Bugfix for interactive scheduler

kgdb_cleanup					Martin J. Bligh
	Stop kgdb renaming schedule to do_schedule when it's not even enabled

acenic_fix					Martin J. Bligh
	Fix warning in acenic driver

local_balance_exec				Martin J. Bligh
	Modify balance_exec to use node-local queues when idle

tcp_speedup					Martin J. Bligh
	Speedup TCP (avoid double copy) as suggested by Linus

disable preempt					Martin J. Bligh
	I broke preempt somehow, temporarily disable it to stop accidents

ppc64 fixes					Anton Blanchard
	Various PPC64 fixes / updates

numameminfo fix					Martin J. Bligh
	Correct /proc/meminfo.numa for zholes_size.

config_debug					Dave Hansen
	Make '-g' for the kernel a config option

akpm_bear_pit					Andrew Morton
	Add a printk for some buffer error I was hitting

32bit_dev_t					Andries Brouwer
	Make dev_t 32 bit

dynamic_hd_struct				Badari Pulavarty
	Allocate hd_structs dynamically

lotsa_sds					Badari Pulavarty
	Create some insane number of sds

iosched_hashes					Badari Pulavarty
	Twiddle with the iosched hash tables for fun & profit

per_node_idt					Zwane Mwaikambo
	Per node IDT so we can do silly numbers of IO-APICs on NUMA-Q

config_numasched				Dave Hansen
	Turn NUMA scheduler into a config option

lockmeter_tytso					Ted Tso
	Fix lockmeter

aiofix2						Mingming Cao
	fixed a bug in ioctx_alloc()

config_irqbal					Keith Mannthey
	Make irqbalance a config option

fs_aio_1_retry					Suparna Bhattacharya
	Filesystem aio. Chapter 1

fs_aio_2_read					Suparna Bhattacharya
	Filesystem aio. Chapter 2

fs_aio_3_write					Suparna Bhattacharya
	Filesystem aio. Chapter 3

fs_aio_4_down_wq				Suparna Bhattacharya
	Filesystem aio. Chapter 4

fs_aio_5_wrdown_wq				Suparna Bhattacharya
	Filesystem aio. Chapter 5

fs_aio_6_bread_wq				Suparna Bhattacharya
	Filesystem aio. Chapter 6

fs_aio_7_ext2getblk_wq				Suparna Bhattacharya
	Filesystem aio. Chapter 7

fs_aio_8_down_wq-ppc64				Suparna Bhattacharya
	Filesystem aio. Chapter 8

fs_aio_9_down_wq-x86_64				Suparna Bhattacharya
	Filesystem aio. Chapter 9

reslabify-pmd-pgd				William Lee Irwin
	Stick things back in the slab. Or something.

separate_pmd					Dave Hansen
	Separate kernel pmd per task.

banana_split					Dave Hansen
	Make PAGE_OFFSET play twister and limbo.

percpu_real_loadavg				Dave Hansen / Martin J. Bligh
	Tell me what the real load average is, and tell me per cpu.

numa_large_pages				William Lee Irwin
	Place large pages in sensible places.

list-of-lists					Martin J. Bligh / Dave McCracken
	Sort the list of vmas off an address space in a fancy-pants way.

nolock						Dave McCracken
	Nah, we don't like locks.

proc_pid_readdir				Manfred Spraul
	Make proc_pid_readdir more efficent. Allegedly.

mbind_part1					Matt Dobson
	Bind some memory for NUMA.

mbind_part2					Matt Dobson
	Bind some more memory for NUMA.

per_node_rss					Matt Dobson
	Track which nodes tasks mem is on, so sched can be sensible.

sysfs_fix					Pat Mochel
	Fix something in sysfs, I forget what. Dave was complaining.

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

Re: [Lse-tech] 2.5.72-mjb2

[Sean Neakums]

During build:

include/linux/mm.h: In function `page_to_nid':
include/linux/mm.h:620: warning: implicit declaration of function `pfn_to_nid'

This patch shuts it up, but I'm only guessing as to whether
page_to_nid is NUMA-specific.


--- C72-mjb2/include/linux/mm.h~	2003-06-19 12:19:12.000000000 +0100
+++ C72-mjb2/include/linux/mm.h	2003-06-19 12:33:51.000000000 +0100
@@ -611,6 +611,7 @@
 extern int remap_page_range(struct vm_area_struct *vma, unsigned long from,
 		unsigned long to, unsigned long size, pgprot_t prot);
 
+#ifdef CONFIG_NUMA
 /* 
  * Given a struct page, determine which node's memory it is from.
  * TODO: There's probably a more efficient way to do this...
@@ -620,7 +621,6 @@
 	return pfn_to_nid(page_to_pfn(page));
 }
 
-#ifdef CONFIG_NUMA
 static inline void zero_rss(struct mm_struct *mm)
 {
 	mm->rss = 0;