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kernel, esp32: Add SMP kconfig flag and MP_NUM_CPUS variable

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Simply define the Kconfig variables in this patch so they can be used
in later patches.  Define MP_NUM_CPUS correctly on esp32.  No code
changes.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2018-01-25 14:03:02 -08:00 • committed by Anas Nashif
commit d3376f2781
2 changed files with 19 additions and 0 deletions
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3
arch/xtensa/soc/esp32/Kconfig.defconfig
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@ -15,4 +15,7 @@ config IRQ_OFFLOAD_INTNUM
config XTENSA_ASM2 config XTENSA_ASM2
def_bool y def_bool y
config MP_NUM_CPUS
default 2
endif endif

16
kernel/Kconfig
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@ -561,6 +561,22 @@ config USE_SWITCH
architecture provides both, _arch_switch incurs more somewhat architecture provides both, _arch_switch incurs more somewhat
overhead and may be slower. overhead and may be slower.
config SMP
bool
prompt "Enable symmetric multithreading support"
default n
help
When true, Zephyr will be build with SMP support, allowing
more than one CPU to schedule Zephyr tasks at a time.
config MP_NUM_CPUS
int
prompt "Number of CPUs/cores"
default 1
help
Number of multiprocessing-capable cores available to the
multicpu API and SMP features.
source "kernel/Kconfig.event_logger" source "kernel/Kconfig.event_logger"
source "kernel/Kconfig.power_mgmt" source "kernel/Kconfig.power_mgmt"