[PATCH v16 1/9] ARM: mcpm: support 4 clusters
From: haojian.zhuang@linaro.org (Haojian Zhuang)
Date: 2014-08-04 02:58:00
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
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 <redacted> --- arch/arm/Kconfig | 9 +++++++++ arch/arm/include/asm/mcpm.h | 5 +++++ 2 files changed, 14 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 87b63fd..10cc6ec 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig@@ -1490,6 +1490,15 @@ 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 d9702eb..a4fbacc 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__
--
1.9.1