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Ingo Molnar 0437e109e1 sched: zap the migration init / cache-hot balancing code 
the SMP load-balancer uses the boot-time migration-cost estimation
code to attempt to improve the quality of balancing. The reason for
this code is that the discrete priority queues do not preserve
the order of scheduling accurately, so the load-balancer skips
tasks that were running on a CPU 'recently'.

this code is fundamental fragile: the boot-time migration cost detector
doesnt really work on systems that had large L3 caches, it caused boot
delays on large systems and the whole cache-hot concept made the
balancing code pretty undeterministic as well.

(and hey, i wrote most of it, so i can say it out loud that it sucks ;-)

under CFS the same purpose of cache affinity can be achieved without
any special cache-hot special-case: tasks are sorted in the 'timeline'
tree and the SMP balancer picks tasks from the left side of the
tree, thus the most cache-cold task is balanced automatically.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
 		2007-07-09 18:51:57 +02:00
..
Makefile [SPARC64]: Move topology init code into new file, sysfs.c 2007-06-04 21:49:50 -07:00
asm-offsets.c kbuild: frv,m32r,sparc64 introduce fake asm-offsets.h file 2005-09-09 22:47:53 +02:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
auxio.c Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
binfmt_aout32.c [PATCH] struct path: convert sparc64 2006-12-08 08:28:50 -08:00
binfmt_elf32.c [PATCH] elf: Always define elf_addr_t in linux/elf.h 2006-12-07 08:39:38 -08:00
central.c [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/console.c 2007-05-07 00:00:37 -07:00
chmc.c [SPARC64]: constify of_get_property return: arch/sparc64 2007-04-26 01:54:24 -07:00
compat_audit.c [PATCH] add SIGNAL syscall class (v3) 2007-05-11 05:38:25 -04:00
cpu.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
dtlb_miss.S [SPARC64]: More TLB/TSB handling fixes. 2006-03-20 01:13:34 -08:00
dtlb_prot.S [SPARC64]: Fix boot failures on SunBlade-150 2005-10-12 12:22:46 -07:00
ebus.c [SPARC64]: Kill asm-sparc64/pbm.h 2007-05-08 16:43:08 -07:00
entry.S [SPARC64]: Fix args to sun4v_ldc_revoke(). 2007-06-13 00:01:27 -07:00
etrap.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head.S [SPARC64]: Fix two bugs wrt. kernel 4MB TSB. 2007-05-29 02:51:38 -07:00
hvapi.c [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
idprom.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
iommu_common.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
iommu_common.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c [SPARC64]: Need to set state to IDLE during sun4v IRQ enable. 2007-06-26 00:13:31 -07:00
isa.c [SPARC64] isa: Convert to use pci_device_to_OF_node(). 2007-04-26 01:55:05 -07:00
itlb_miss.S [SPARC64]: Fix _PAGE_EXEC_4U check in sun4u I-TLB miss handler. 2007-05-29 02:50:15 -07:00
kprobes.c [SPARC64]: Optimize fault kprobe handling just like powerpc. 2007-05-08 18:25:14 -07:00
ktlb.S [SPARC64]: Get DEBUG_PAGEALLOC working again. 2007-03-16 17:20:28 -07:00
mdesc.c [SPARC64]: Fix {mc,smt}_capable(). 2007-06-04 21:50:05 -07:00
module.c [SPARC]: Handle UNWIND_INFO properly. 2006-05-12 12:45:50 -07:00
of_device.c [SPARC64]: Handle PCI bridges without 'ranges' property. 2007-06-07 21:59:44 -07:00
pci.c [SPARC64]: Handle PCI bridges without 'ranges' property. 2007-06-07 21:59:44 -07:00
pci_common.c [SPARC64]: Fix IO/MEM space sizing for PCI. 2007-06-13 00:01:19 -07:00
pci_fire.c [SPARC64]: Correct FIRE_IOMMU_FLUSHINV register offset. 2007-05-11 21:39:26 -07:00
pci_impl.h [SPARC64] PCI: Consolidate PCI access code into pci_common.c 2007-05-09 02:35:27 -07:00
pci_iommu.c [SPARC64]: Spelling fixes. 2007-05-11 21:39:21 -07:00
pci_psycho.c [SPARC64] PCI: Consolidate PCI access code into pci_common.c 2007-05-09 02:35:27 -07:00
pci_sabre.c [SPARC64]: Fix 2 bugs in PCI Sabre bus scanning. 2007-06-07 16:59:46 -07:00
pci_schizo.c [SPARC64] PCI: Consolidate PCI access code into pci_common.c 2007-05-09 02:35:27 -07:00
pci_sun4v.c [SPARC64]: Negotiate hypervisor API for PCI services. 2007-05-29 02:49:34 -07:00
pci_sun4v.h [SPARC64]: Add PCI MSI support on Niagara. 2007-02-10 23:50:37 -08:00
pci_sun4v_asm.S [SPARC64]: Add PCI MSI support on Niagara. 2007-02-10 23:50:37 -08:00
power.c [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
process.c [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
prom.c [SPARC64]: Fix SBUS IRQ regression caused by PCI-E driver. 2007-06-07 16:59:51 -07:00
ptrace.c [SPARC{32,64}]: Propagate ptrace_traceme() return value. 2006-12-10 02:40:27 -08:00
rtrap.S [SPARC64]: Add irqtrace/stacktrace/lockdep support. 2006-12-10 02:39:09 -08:00
sbus.c [SPARC64]: Fix SBUS IRQ regression caused by PCI-E driver. 2007-06-07 16:59:51 -07:00
semaphore.c [SPARC64]: Avoid membar instructions in delay slots. 2005-06-27 15:42:04 -07:00
setup.c [SPARC64]: Move topology init code into new file, sysfs.c 2007-06-04 21:49:50 -07:00
signal.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
signal32.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
smp.c sched: zap the migration init / cache-hot balancing code 2007-07-09 18:51:57 +02:00
sparc64_ksyms.c [SPARC64]: Include <linux/rwsem.h> instead of <asm/rwsem.h>. 2007-06-07 20:24:50 -07:00
sstate.c [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
stacktrace.c simplify the stacktrace code 2007-05-08 11:14:58 -07:00
starfire.c [SPARC64]: Kill starfire_cookie from SBUS/PCI. 2006-06-29 16:37:08 -07:00
sun4v_ivec.S [SPARC64]: Use machine description and OBP properly for cpu probing. 2007-05-29 02:49:41 -07:00
sun4v_tlb_miss.S [SPARC64]: Set g4/g5 properly in sun4v dtlb-prot handling. 2007-01-26 18:56:01 -08:00
sunos_ioctl32.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
sys32.S [SPARC64]: Fix arg passing to compat_sys_ipc(). 2007-04-13 13:27:08 -07:00
sys_sparc.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
sys_sparc32.c [SPARC]: Wire up utimensat syscall. 2007-05-08 17:50:14 -07:00
sys_sunos32.c [SPARC]: avoid CHILD_MAX and OPEN_MAX constants 2007-04-12 13:13:42 -07:00
sysfs.c [SPARC64]: Provide mmu statistics via sysfs. 2007-06-04 21:49:57 -07:00
systbls.S [SPARC]: Wire up signalfd/timerfd/eventfd syscalls. 2007-05-11 22:06:51 -07:00
time.c [SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry. 2007-05-29 02:52:15 -07:00
trampoline.S [SPARC64]: Get SUN4V SMP working. 2006-03-20 01:13:22 -08:00
traps.c [SPARC64]: Use machine description and OBP properly for cpu probing. 2007-05-29 02:49:41 -07:00
tsb.S [SPARC64]: store-init needs trailing membar. 2007-03-19 13:27:33 -07:00
ttable.S [SPARC64]: Unify timer interrupt handler. 2007-04-26 01:54:11 -07:00
una_asm.S [SPARC64]: Mark __ex_table section correctly. 2006-03-04 23:23:56 -08:00
unaligned.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
us2e_cpufreq.c [SPARC64]: kzalloc() conversion 2006-03-20 01:14:19 -08:00
us3_cpufreq.c [SPARC64]: kzalloc() conversion 2006-03-20 01:14:19 -08:00
visemul.c [SPARC64]: Call do_mathemu on illegal instruction traps too. 2006-12-10 02:39:32 -08:00
vmlinux.lds.S sparc64: fix alignment bug in linker definition script 2007-05-29 21:29:00 +02:00
winfixup.S [SPARC64]: Fix unaligned access winfxup handling on SUN4V. 2006-03-20 01:13:39 -08:00