linux-toradex.git/include/linux/topology.h, branch v2.6.25.2

sched: add arch_update_cpu_topology hook.

2008-03-21T15:43:48+00:00

Will be called each time the scheduling domains are rebuild.
Needed for architectures that don't have a static cpu topology.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Ingo Molnar

sched: tune multi-core idle balancing

2008-03-19T03:27:53+00:00

WAKE_IDLE is too agressive on multi-core CPUs with the new
wake-affine code, keep it on for SMT/HT balancing alone
(where there's no cache affinity at all between logical CPUs).

Signed-off-by: Ingo Molnar

sched: whitespace cleanups in topology.h

2008-01-25T20:08:20+00:00

whitespace cleanups in topology.h.

Signed-off-by: Ingo Molnar

sched: reactivate fork balancing

2008-01-25T20:08:20+00:00

reactivate fork balancing.

Signed-off-by: Ingo Molnar

sched: enable wake-idle on CONFIG_SCHED_MC=y

2007-10-15T15:00:19+00:00

most multicore CPUs today have shared L2 caches, so tune things so
that the spreading amongst cores is more aggressive.

Signed-off-by: Ingo Molnar

sched: reintroduce topology.h tunings

2007-10-15T15:00:19+00:00

reintroduce the 2.6.22 topology.h tunings again - they result in
slightly better balancing.

Signed-off-by: Ingo Molnar

[PATCH] sched: remove cache_hot_time

2007-08-02T15:41:40+00:00

remove the last unused remains of cache_hot_time.

Signed-off-by: Ingo Molnar

[PATCH] sched: small topology.h cleanup

2007-07-13T17:11:52+00:00

trivial cleanup: LOCAL_DISTANCE and REMOTE_DISTANCE are only used in
topology.h and inside an #ifndef section - limit their existence to
that #ifndef.

Signed-off-by: Ingo Molnar 
Signed-off-by: Linus Torvalds

sched: more agressive idle balancing

2007-07-09T16:52:01+00:00

the Linux scheduler is starving a number of workloads. So default
to more agressive idle-balancing. This hurts lmbench context-switching
numbers (which was the main reason we sucked at idle-balancing for
such a long time) but the lmbench numbers are fine once the system is
minimally utilized.

Signed-off-by: Ingo Molnar

[PATCH] sched: remove SMT nice

2007-03-05T15:57:51+00:00

Remove the SMT-nice feature which idles sibling cpus on SMT cpus to
facilitiate nice working properly where cpu power is shared.  The idling of
cpus in the presence of runnable tasks is considered too fragile, easy to
break with outside code, and the complexity of managing this system if an
architecture comes along with many logical cores sharing cpu power will be
unworkable.

Remove the associated per_cpu_gain variable in sched_domains used only by
this code.

Also:

  The reason is that with dynticks enabled, this code breaks without yet
  further tweaks so dynticks brought on the rapid demise of this code.  So
  either we tweak this code or kill it off entirely.  It was Ingo's preference
  to kill it off.  Either way this needs to happen for 2.6.21 since dynticks
  has gone in.

Signed-off-by: Con Kolivas 
Acked-by: Ingo Molnar 
Cc: Nick Piggin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds