From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Tue, 15 Sep 2009 13:22:03 +0000 (+0200)
Subject: sched: Reduce forkexec_idx
X-Git-Tag: firefly_0821_release~12932^2~21
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b8a543ea5a5896830a9969bacfd047f9d15940b2;p=firefly-linux-kernel-4.4.55.git

sched: Reduce forkexec_idx

If we're looking to place a new task, we might as well find the
idlest position _now_, not 1 tick ago.

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

diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index 42f1673ec83f..569b9dafc78c 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -63,7 +63,7 @@ void build_cpu_to_node_map(void);
 	.idle_idx		= 1,			\
 	.newidle_idx		= 0,			\
 	.wake_idx		= 0,			\
-	.forkexec_idx		= 1,			\
+	.forkexec_idx		= 0,			\
 	.flags			= SD_LOAD_BALANCE	\
 				| SD_BALANCE_NEWIDLE	\
 				| SD_BALANCE_EXEC	\
@@ -89,7 +89,7 @@ void build_cpu_to_node_map(void);
 	.idle_idx		= 2,			\
 	.newidle_idx		= 0,			\
 	.wake_idx		= 0,			\
-	.forkexec_idx		= 1,			\
+	.forkexec_idx		= 0,			\
 	.flags			= SD_LOAD_BALANCE	\
 				| SD_BALANCE_NEWIDLE	\
 				| SD_BALANCE_EXEC	\
diff --git a/arch/sh/include/asm/topology.h b/arch/sh/include/asm/topology.h
index c8436771e31d..a8cc564b703d 100644
--- a/arch/sh/include/asm/topology.h
+++ b/arch/sh/include/asm/topology.h
@@ -17,7 +17,7 @@
 	.idle_idx		= 2,			\
 	.newidle_idx		= 0,			\
 	.wake_idx		= 0,			\
-	.forkexec_idx		= 1,			\
+	.forkexec_idx		= 0,			\
 	.flags			= SD_LOAD_BALANCE	\
 				| SD_BALANCE_FORK	\
 				| SD_BALANCE_EXEC	\
diff --git a/arch/sparc/include/asm/topology_64.h b/arch/sparc/include/asm/topology_64.h
index bc3a0930ed64..10b979d1de20 100644
--- a/arch/sparc/include/asm/topology_64.h
+++ b/arch/sparc/include/asm/topology_64.h
@@ -53,7 +53,7 @@ static inline int pcibus_to_node(struct pci_bus *pbus)
 	.idle_idx		= 2,			\
 	.newidle_idx		= 0, 			\
 	.wake_idx		= 0,			\
-	.forkexec_idx		= 1,			\
+	.forkexec_idx		= 0,			\
 	.flags			= SD_LOAD_BALANCE	\
 				| SD_BALANCE_FORK	\
 				| SD_BALANCE_EXEC	\
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 7fafd1bc4149..589f12383d78 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -116,13 +116,11 @@ extern unsigned long node_remap_size[];
 
 # define SD_CACHE_NICE_TRIES	1
 # define SD_IDLE_IDX		1
-# define SD_FORKEXEC_IDX	0
 
 #else
 
 # define SD_CACHE_NICE_TRIES	2
 # define SD_IDLE_IDX		2
-# define SD_FORKEXEC_IDX	1
 
 #endif
 
@@ -137,7 +135,7 @@ extern unsigned long node_remap_size[];
 	.idle_idx		= SD_IDLE_IDX,				\
 	.newidle_idx		= 0,					\
 	.wake_idx		= 0,					\
-	.forkexec_idx		= SD_FORKEXEC_IDX,			\
+	.forkexec_idx		= 0,					\
 									\
 	.flags			= 1*SD_LOAD_BALANCE			\
 				| 1*SD_BALANCE_NEWIDLE			\
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 4298745615a5..936ab2b37683 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -121,7 +121,7 @@ int arch_update_cpu_topology(void);
 	.cache_nice_tries	= 1,					\
 	.busy_idx		= 2,					\
 	.wake_idx		= 0,					\
-	.forkexec_idx		= 1,					\
+	.forkexec_idx		= 0,					\
 									\
 	.flags			= 1*SD_LOAD_BALANCE			\
 				| 1*SD_BALANCE_NEWIDLE			\
@@ -153,7 +153,7 @@ int arch_update_cpu_topology(void);
 	.idle_idx		= 1,					\
 	.newidle_idx		= 0,					\
 	.wake_idx		= 0,					\
-	.forkexec_idx		= 1,					\
+	.forkexec_idx		= 0,					\
 									\
 	.flags			= 1*SD_LOAD_BALANCE			\
 				| 1*SD_BALANCE_NEWIDLE			\