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ARM: mcpm: support 4 clusters

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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>
This commit is contained in:
Haojian Zhuang 2014-04-15 14:52:00 +08:00 • committed by Wei Xu
parent 7d1311b93e
commit ebf4a5c5b4
2 changed files with 14 additions and 0 deletions
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9
arch/arm/Kconfig
View file

@ -1405,6 +1405,15 @@ config MCPM
for (multi-)cluster based systems, such as big.LITTLE based for (multi-)cluster based systems, such as big.LITTLE based
systems. 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 config BIG_LITTLE
bool "big.LITTLE support (Experimental)" bool "big.LITTLE support (Experimental)"
depends on CPU_V7 && SMP depends on CPU_V7 && SMP

5
arch/arm/include/asm/mcpm.h
View file

@ -20,7 +20,12 @@
* to consider dynamic allocation. * to consider dynamic allocation.
*/ */
#define MAX_CPUS_PER_CLUSTER 4 #define MAX_CPUS_PER_CLUSTER 4
#ifdef CONFIG_MCPM_QUAD_CLUSTER
#define MAX_NR_CLUSTERS 4
#else
#define MAX_NR_CLUSTERS 2 #define MAX_NR_CLUSTERS 2
#endif
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__