From: Haojian Zhuang Date: Tue, 15 Apr 2014 06:52:00 +0000 (+0800) Subject: ARM: mcpm: support 4 clusters X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ebf4a5c5b4027b682ed8877a938e6d1d92f37745;p=linux-beck.git ARM: mcpm: support 4 clusters Add the CONFIG_MCPM_QUAD_CLUSTER configuration to enlarge cluster number from 2 to 4. Signed-off-by: Haojian Zhuang Reviewed-by: Nicolas Pitre Signed-off-by: Wei Xu --- diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c49a775937db..e43221ab4048 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1405,6 +1405,15 @@ config MCPM for (multi-)cluster based systems, such as big.LITTLE based systems. +config MCPM_QUAD_CLUSTER + bool + depends on MCPM + help + To avoid wasting resources unnecessarily, MCPM only supports up + to 2 clusters by default. + Platforms with 3 or 4 clusters that use MCPM must select this + option to allow the additional clusters to be managed. + config BIG_LITTLE bool "big.LITTLE support (Experimental)" depends on CPU_V7 && SMP diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h index 57ff7f2a3084..d428e386c88e 100644 --- a/arch/arm/include/asm/mcpm.h +++ b/arch/arm/include/asm/mcpm.h @@ -20,7 +20,12 @@ * to consider dynamic allocation. */ #define MAX_CPUS_PER_CLUSTER 4 + +#ifdef CONFIG_MCPM_QUAD_CLUSTER +#define MAX_NR_CLUSTERS 4 +#else #define MAX_NR_CLUSTERS 2 +#endif #ifndef __ASSEMBLY__