sched: Disable wakeup balancing

Sysbench thinks SD_BALANCE_WAKE is too agressive and kbuild doesn't
really mind too much, SD_BALANCE_NEWIDLE picks up most of the
slack.

On a dual socket, quad core, dual thread nehalem system:

sysbench (--num_threads=16):

 SD_BALANCE_WAKE-: 13982 tx/s
 SD_BALANCE_WAKE+: 15688 tx/s

kbuild (-j16):

 SD_BALANCE_WAKE-: 47.648295846  seconds time elapsed   ( +-   0.312% )
 SD_BALANCE_WAKE+: 47.608607360  seconds time elapsed   ( +-   0.026% )

(same within noise)

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

6 files changed, 1 insertions, 7 deletions

diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index 569b9dafc78c..d0141fbf51d0 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -68,7 +68,6 @@ void build_cpu_to_node_map(void);
                                 | SD_BALANCE_NEWIDLE    \
                                 | SD_BALANCE_EXEC       \
                                 | SD_BALANCE_FORK       \
-                                | SD_BALANCE_WAKE       \
                                 | SD_WAKE_AFFINE,       \
         .last_balance           = jiffies,              \
         .balance_interval       = 1,                    \
@@ -94,7 +93,6 @@ void build_cpu_to_node_map(void);
                                 | SD_BALANCE_NEWIDLE    \
                                 | SD_BALANCE_EXEC       \
                                 | SD_BALANCE_FORK       \
-                                | SD_BALANCE_WAKE       \
                                 | SD_SERIALIZE,         \
         .last_balance           = jiffies,              \
         .balance_interval       = 64,                   \
diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h
index d8332398f5be..230591707005 100644
--- a/arch/mips/include/asm/mach-ip27/topology.h
+++ b/arch/mips/include/asm/mach-ip27/topology.h
@@ -48,7 +48,6 @@ extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES];
         .cache_nice_tries       = 1,                    \
         .flags                  = SD_LOAD_BALANCE       \
                                 | SD_BALANCE_EXEC       \
-                                | SD_BALANCE_WAKE,      \
         .last_balance           = jiffies,              \
         .balance_interval       = 1,                    \
         .nr_balance_failed      = 0,                    \
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 1a2c9eb42a03..394edcbcce71 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -63,7 +63,6 @@ static inline int pcibus_to_node(struct pci_bus *bus)
                                 | SD_BALANCE_EXEC       \
                                 | SD_BALANCE_FORK       \
                                 | SD_BALANCE_NEWIDLE    \
-                                | SD_BALANCE_WAKE       \
                                 | SD_SERIALIZE,         \
         .last_balance           = jiffies,              \
         .balance_interval       = 1,                    \
diff --git a/arch/sh/include/asm/topology.h b/arch/sh/include/asm/topology.h
index a8cc564b703d..f8c40cc65054 100644
--- a/arch/sh/include/asm/topology.h
+++ b/arch/sh/include/asm/topology.h
@@ -21,7 +21,6 @@
         .flags                  = SD_LOAD_BALANCE       \
                                 | SD_BALANCE_FORK       \
                                 | SD_BALANCE_EXEC       \
-                                | SD_BALANCE_WAKE       \
                                 | SD_BALANCE_NEWIDLE    \
                                 | SD_SERIALIZE,         \
         .last_balance           = jiffies,              \
diff --git a/arch/sparc/include/asm/topology_64.h b/arch/sparc/include/asm/topology_64.h
index 10b979d1de20..26cd25c08399 100644
--- a/arch/sparc/include/asm/topology_64.h
+++ b/arch/sparc/include/asm/topology_64.h
@@ -57,7 +57,6 @@ static inline int pcibus_to_node(struct pci_bus *pbus)
         .flags                  = SD_LOAD_BALANCE       \
                                 | SD_BALANCE_FORK       \
                                 | SD_BALANCE_EXEC       \
-                                | SD_BALANCE_WAKE       \
                                 | SD_SERIALIZE,         \
         .last_balance           = jiffies,              \
         .balance_interval       = 1,                    \
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 589f12383d78..6f0695d744bf 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -141,7 +141,7 @@ extern unsigned long node_remap_size[];
                                 | 1*SD_BALANCE_NEWIDLE                  \
                                 | 1*SD_BALANCE_EXEC                     \
                                 | 1*SD_BALANCE_FORK                     \
-                                | 1*SD_BALANCE_WAKE                     \
+                                | 0*SD_BALANCE_WAKE                     \
                                 | 1*SD_WAKE_AFFINE                      \
                                 | 0*SD_SHARE_CPUPOWER                   \
                                 | 0*SD_POWERSAVINGS_BALANCE             \