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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>		18 years ago
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kernel	sched: zap the migration init / cache-hot balancing code	18 years ago
lib	…
mm	[IA64] is_power_of_2-ia64/mm/hugetlbpage.c	18 years ago
oprofile	…
pci	[IA64] fix kmalloc(0) in arch/ia64/pci/pci.c	18 years ago
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sn	[IA64] Make SN2 PCI code use ioremap rather than manually mangle the address	18 years ago
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