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Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index fb0dcb994b84..d112aed2999b 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -250,6 +250,21 @@ config PPC_STD_MMU_32 def_bool y depends on PPC_STD_MMU && PPC32 +config VIRT_CPU_ACCOUNTING + bool "Deterministic task and CPU time accounting" + depends on PPC64 + default y + help + Select this option to enable more accurate task and CPU time + accounting. This is done by reading a CPU counter on each + kernel entry and exit and on transitions within the kernel + between system, softirq and hardirq state, so there is a + small performance impact. This also enables accounting of + stolen time on logically-partitioned systems running on + IBM POWER5-based machines. + + If in doubt, say Y here. + config SMP depends on PPC_STD_MMU bool "Symmetric multi-processing support" |