Peter Zijlstra 669c55e9f9 sched: Pre-compute cpumask_weight(sched_domain_span(sd)) ...

Dave reported that his large SPARC machines spend lots of time in
hweight64(), try and optimize some of those needless cpumask_weight()
invocations (esp. with the large offstack cpumasks these are very
expensive indeed).

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2010-04-23 11:02:02 +02:00

..

acpi

acpi: Support IBM SMBus CMI devices

2010-03-24 14:38:37 +01:00

asm-generic

dma-mapping: pci: move pci_set_dma_mask and pci_set_consistent_dma_mask to pci-dma-compat.h

2010-03-12 15:52:42 -08:00

crypto

crypto: md5 - Add export support

2010-01-17 21:55:31 +11:00

drm

Merge branch 'master' into export-slabh

2010-04-05 11:37:28 +09:00

keys

…

linux

sched: Pre-compute cpumask_weight(sched_domain_span(sd))

2010-04-23 11:02:02 +02:00

math-emu

Fix misspellings of "truly" in comments.

2010-02-04 11:55:45 +01:00

media

Merge branch 'for-next' into for-linus

2010-03-08 16:55:37 +01:00

mtd

…

net

Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

2010-04-11 02:44:30 -07:00

pcmcia

pcmcia: use dev_pm_ops for class pcmcia_socket_class

2010-03-24 11:00:11 +01:00

rdma

Merge branch 'misc' into for-next

2010-03-01 23:52:31 -08:00

rxrpc

…

scsi

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

sound

Merge branch 'fix/asoc' into for-linus

2010-04-07 09:54:41 +02:00

trace

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

2010-04-09 11:50:29 -07:00

video

broadsheetfb: support storing waveform

2010-03-12 15:52:34 -08:00

xen

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

Kbuild

…