Appended patch makes sched domain degenerate really work.
For example, now NUMA domain really gets removed on a non-NUMA system.
Signed-off-by: Suresh Siddha <[email protected]>
--- linux-2.6.12-rc2-mm3/kernel/sched.c 2005-04-13 11:15:00.942609504 -0700
+++ linux-mc/kernel/sched.c 2005-04-13 10:44:37.400829992 -0700
@@ -4777,7 +4777,7 @@ static int __devinit sd_parent_degenerat
/* WAKE_BALANCE is a subset of WAKE_AFFINE */
if (cflags & SD_WAKE_AFFINE)
pflags &= ~SD_WAKE_BALANCE;
- if ((~sd->flags) & parent->flags)
+ if (~cflags & pflags)
return 0;
return 1;
--- linux-2.6.12-rc2-mm3/include/linux/topology.h 2005-04-11 23:08:30.843108376 -0700
+++ linux-mc/include/linux/topology.h 2005-04-13 11:14:44.591095312 -0700
@@ -97,6 +97,7 @@
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_NEWIDLE \
| SD_BALANCE_EXEC \
+ | SD_BALANCE_FORK \
| SD_WAKE_AFFINE \
| SD_WAKE_IDLE \
| SD_SHARE_CPUPOWER, \
@@ -128,6 +129,7 @@
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_NEWIDLE \
| SD_BALANCE_EXEC \
+ | SD_BALANCE_FORK \
| SD_WAKE_AFFINE, \
.last_balance = jiffies, \
.balance_interval = 1, \
-
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