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| author | Haojian Zhuang <haojian.zhuang@linaro.org> | 2014-04-15 14:52:00 +0800 |
|---|---|---|
| committer | Wei Xu <xuwei5@hisilicon.com> | 2014-09-03 14:09:58 +0100 |
| commit | ebf4a5c5b4027b682ed8877a938e6d1d92f37745 (patch) | |
| tree | f67f4ea317fd7d0d3858bb7d7b12baf2f7890a70 | |
| parent | 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff) | |
| download | lwn-ebf4a5c5b4027b682ed8877a938e6d1d92f37745.tar.gz lwn-ebf4a5c5b4027b682ed8877a938e6d1d92f37745.zip | |
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 <haojian.zhuang@linaro.org>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
| -rw-r--r-- | arch/arm/Kconfig | 9 | ||||
| -rw-r--r-- | arch/arm/include/asm/mcpm.h | 5 |
2 files changed, 14 insertions, 0 deletions
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__ |