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-rw-r--r--include/asm-i386/topology.h1
-rw-r--r--include/asm-ia64/topology.h1
-rw-r--r--include/asm-powerpc/topology.h1
-rw-r--r--include/asm-x86_64/topology.h1
-rw-r--r--include/linux/sched.h1
-rw-r--r--include/linux/topology.h3
6 files changed, 7 insertions, 1 deletions
diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h
index 978d0959613..ac58580ad66 100644
--- a/include/asm-i386/topology.h
+++ b/include/asm-i386/topology.h
@@ -89,6 +89,7 @@ static inline int node_to_first_cpu(int node)
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_EXEC \
| SD_BALANCE_FORK \
+ | SD_SERIALIZE \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
.balance_interval = 1, \
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index a6e38565ab4..22ed6749557 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -101,6 +101,7 @@ void build_cpu_to_node_map(void);
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_EXEC \
| SD_BALANCE_FORK \
+ | SD_SERIALIZE \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
.balance_interval = 64, \
diff --git a/include/asm-powerpc/topology.h b/include/asm-powerpc/topology.h
index 50c014007de..6610495f5f1 100644
--- a/include/asm-powerpc/topology.h
+++ b/include/asm-powerpc/topology.h
@@ -66,6 +66,7 @@ static inline int pcibus_to_node(struct pci_bus *bus)
| SD_BALANCE_EXEC \
| SD_BALANCE_NEWIDLE \
| SD_WAKE_IDLE \
+ | SD_SERIALIZE \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
.balance_interval = 1, \
diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h
index 5c8f49280db..2facec5914d 100644
--- a/include/asm-x86_64/topology.h
+++ b/include/asm-x86_64/topology.h
@@ -47,6 +47,7 @@ extern int __node_distance(int, int);
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_FORK \
| SD_BALANCE_EXEC \
+ | SD_SERIALIZE \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
.balance_interval = 1, \
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1208feab46e..ea92e5c8908 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -648,6 +648,7 @@ enum idle_type
#define SD_SHARE_CPUPOWER 128 /* Domain members share cpu power */
#define SD_POWERSAVINGS_BALANCE 256 /* Balance for power savings */
#define SD_SHARE_PKG_RESOURCES 512 /* Domain members share cpu pkg resources */
+#define SD_SERIALIZE 1024 /* Only a single load balancing instance */
#define BALANCE_FOR_MC_POWER \
(sched_smt_power_savings ? SD_POWERSAVINGS_BALANCE : 0)
diff --git a/include/linux/topology.h b/include/linux/topology.h
index b93bb6cc6cc..6c5a6e6e813 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -194,7 +194,8 @@
.wake_idx = 0, /* unused */ \
.forkexec_idx = 0, /* unused */ \
.per_cpu_gain = 100, \
- .flags = SD_LOAD_BALANCE, \
+ .flags = SD_LOAD_BALANCE \
+ | SD_SERIALIZE, \
.last_balance = jiffies, \
.balance_interval = 64, \
.nr_balance_failed = 0, \