[PATCH 1/2] powerpc: Disable mcount tracers in pseries config

STALE5704d

2 messages, 1 author, 2011-01-12 · open the first message on its own page

[PATCH 1/2] powerpc: Disable mcount tracers in pseries config

From: Anton Blanchard <hidden>
Date: 2011-01-12 12:12:43 

IRQSOFF_TRACER and STACK_TRACER force the kernel to be built with -pg
which is a substantial overhead.
 
Signed-off-by: Anton Blanchard <redacted> 
---     

Index: powerpc.git/arch/powerpc/configs/pseries_defconfig
===================================================================
--- powerpc.git.orig/arch/powerpc/configs/pseries_defconfig	2011-01-11 14:34:38.890639046 +1100
+++ powerpc.git/arch/powerpc/configs/pseries_defconfig	2011-01-12 23:06:28.770355258 +1100
@@ -311,9 +311,7 @@ CONFIG_DEBUG_KERNEL=y
 # CONFIG_RCU_CPU_STALL_DETECTOR is not set
 CONFIG_LATENCYTOP=y
 CONFIG_SYSCTL_SYSCALL_CHECK=y
-CONFIG_IRQSOFF_TRACER=y
 CONFIG_SCHED_TRACER=y
-CONFIG_STACK_TRACER=y
 CONFIG_BLK_DEV_IO_TRACE=y
 CONFIG_DEBUG_STACKOVERFLOW=y
 CONFIG_DEBUG_STACK_USAGE=y

[PATCH 2/2] powerpc: Enable 64kB pages and 1024 threads in pseries config

From: Anton Blanchard <hidden>
Date: 2011-01-12 12:14:32 

- Enable 64kB pages so it gets some regular testing.

- The largest POWER7 has 1024 threads so bump NR_CPUS it to match.

Signed-off-by: Anton Blanchard <redacted> 
---     

Index: powerpc.git/arch/powerpc/configs/pseries_defconfig
===================================================================
--- powerpc.git.orig/arch/powerpc/configs/pseries_defconfig	2011-01-12 22:51:34.101760097 +1100
+++ powerpc.git/arch/powerpc/configs/pseries_defconfig	2011-01-12 22:52:47.434064107 +1100
@@ -2,7 +2,7 @@ CONFIG_PPC64=y
 CONFIG_ALTIVEC=y
 CONFIG_VSX=y
 CONFIG_SMP=y
-CONFIG_NR_CPUS=128
+CONFIG_NR_CPUS=1024
 CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
@@ -45,6 +45,8 @@ CONFIG_KEXEC=y
 CONFIG_IRQ_ALL_CPUS=y
 CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
+CONFIG_PPC_64K_PAGES=y
+CONFIG_PPC_SUBPAGE_PROT=y
 CONFIG_SCHED_SMT=y
 CONFIG_HOTPLUG_PCI=m
 CONFIG_HOTPLUG_PCI_RPA=m
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