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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
..
cpufreq ACPI: replace kmalloc+memset with kzalloc 2006-12-20 16:54:54 -05:00
Makefile [IA64] Itanium MC Error Injection Tool: Makefile changes 2007-01-29 15:27:07 -08:00
acpi-ext.c Pull acpi_os_free into release branch 2006-07-01 17:19:08 -04:00
acpi-processor.c [IA64] Fix using uninitialized data in _PDC setup 2007-05-24 10:14:30 -07:00
acpi.c [IA64] acpi_get_sysname() should be __init 2007-05-24 10:59:44 -07:00
asm-offsets.c [IA64] fsys_getcpu for IA64 2007-03-07 16:27:09 -08:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
brl_emu.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
crash.c [IA64] kdump on INIT needs multi-nodes sync-up (v.2) 2007-05-14 15:55:39 -07:00
crash_dump.c [IA64] kexec: Minor enhancement to includes in crash.c 2007-02-05 11:31:04 -08:00
cyclone.c [IA64] don't report !sn2 or !summit hardware as an error 2006-03-07 15:26:49 -08:00
efi.c EFI: warn only for pre-1.00 system tables 2007-05-08 11:15:10 -07:00
efi_stub.S [IA64] make efi_stub.S fit in 80 cols 2006-06-21 14:35:28 -07:00
entry.S [IA64] wire up {signal,timer,event}fd syscalls 2007-05-14 15:55:11 -07:00
entry.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
err_inject.c [IA64] typo s/kenrel/kernel/ 2007-05-10 09:35:30 -07:00
esi.c [IA64] esi-support 2006-06-21 11:19:22 -07:00
esi_stub.S [IA64] esi-support 2006-06-21 11:19:22 -07:00
fsys.S [IA64] fsys_getcpu for IA64 2007-03-07 16:27:09 -08:00
gate-data.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gate.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
gate.lds.S [PATCH] vDSO hash-style fix 2006-07-31 13:28:43 -07:00
head.S [IA64] Save register stack contents on cpu start 2006-09-08 11:05:13 -07:00
ia64_ksyms.c [IA64] Need export for csum_ipv6_magic 2006-12-07 13:18:57 -08:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
iosapic.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2007-05-09 13:38:45 -07:00
irq.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
irq_ia64.c [IA64] sa_interrupt is deprecated 2007-05-09 14:20:59 -07:00
irq_lsapic.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
ivt.S [IA64] relax per-cpu TLB requirement to DTC 2007-02-06 15:04:48 -08:00
jprobes.S [IA64] enable trap code on slot 1 2006-12-12 12:00:55 -08:00
kprobes.c [IA64] optimize pagefaults a little 2007-05-16 09:00:51 -07:00
machine_kexec.c [IA64] Fix NULL-pointer dereference in ia64_machine_kexec() 2007-02-05 14:06:44 -08:00
machvec.c [IA64] Fix - Section mismatch: reference to .init.data:mvec_name 2007-05-10 11:57:58 -07:00
mca.c [IA64] Fix section conflict of ia64_mlogbuf_finish 2007-05-15 13:38:13 -07:00
mca_asm.S [IA64] relax per-cpu TLB requirement to DTC 2007-02-06 15:04:48 -08:00
mca_drv.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
mca_drv.h [IA64] printing support for MCA/INIT 2006-09-26 14:44:37 -07:00
mca_drv_asm.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
minstate.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
module.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
msi_ia64.c [IA64] Fix wrong assumption about irq and vector in msi_ia64.c 2007-04-06 15:37:06 -07:00
numa.c [PATCH] cpumask: export node_to_cpu_mask consistently 2006-10-02 07:57:17 -07:00
pal.S [IA64] reformat pal.S to fit in 80 columns, fix typos 2006-10-17 14:54:19 -07:00
palinfo.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
patch.c [IA64] remove per-cpu ia64_phys_stacked_size_p8 2007-02-06 15:04:18 -08:00
perfmon.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
perfmon_default_smpl.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
perfmon_generic.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon_itanium.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon_mckinley.h [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
perfmon_montecito.h [IA64] sparse cleanups 2006-12-07 10:48:19 -08:00
process.c [IA64] Only unwind non-running tasks. 2007-05-22 10:16:07 -07:00
ptrace.c [IA64] add missing syscall trace clear 2007-03-08 10:27:24 -08:00
relocate_kernel.S [IA64] Removal of percpu TR cleanup in kexec code 2007-05-08 10:00:28 -07:00
sal.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
salinfo.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c sched: zap the migration init / cache-hot balancing code 2007-07-09 18:51:57 +02:00
sigframe.h [IA64] Add TIF_RESTORE_SIGMASK 2007-05-08 14:51:59 -07:00
signal.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2007-05-09 13:38:45 -07:00
smp.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
smpboot.c [IA64] start_secondary() and smp_callin() should be __cpuinit 2007-05-23 16:46:40 -07:00
sys_ia64.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
time.c [IA64] remove duplicate header include line 2007-06-26 13:33:45 -07:00
topology.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
traps.c [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
unaligned.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
uncached.c [PATCH] Define easier to handle GFP_THISNODE 2006-09-26 08:48:50 -07:00
unwind.c [IA64] Correct unwind validation code 2007-06-26 13:33:10 -07:00
unwind_decoder.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unwind_i.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vmlinux.lds.S all-archs: consolidate .data section definition in asm-generic 2007-05-19 09:11:57 +02:00