sched: fine-tune SD_SIBLING_INIT

fine-tune the HT sched-domains parameters as well.

On a HT capable box, this increases lat_ctx performance from 23.87
usecs to 1.49 usecs:

# before

$ ./lat_ctx -s 0 2

"size=0k ovr=1.89
2 23.87

# after

$ ./lat_ctx -s 0 2

"size=0k ovr=1.84
2 1.49

Signed-off-by: Ingo Molnar <[e-mail]>

include/linux/topology.h

···
 				| SD_BALANCE_FORK	\
 				| SD_BALANCE_EXEC	\
 				| SD_WAKE_AFFINE	\
-				| SD_WAKE_IDLE		\
+				| SD_WAKE_BALANCE	\
 				| SD_SHARE_CPUPOWER,	\
 	.last_balance		= jiffies,		\
 	.balance_interval	= 1,			\