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smp: Remove CONFIG_SMP_IDLETHREAD_STACKSIZE

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Summary:
- The CONFIG_SMP_IDLETHREAD_STACKSIZE was introduced to optimize
  the idle stack size for other than CPU0
- However, there are no big differences between the idle stacks.
- This commit removes the config to simplify the kernel code

Impact:
- All SMP configurations

Testing:
- Tested with ostest with the following configs
- spresense:smp, spresense:rndis_smp
- esp32-devkitc:smp (QEMU), maix-bit:smp (QEMU)
- sabre-6quad:smp (QEMU), sabre-6quad:netnsh_smp (QEMU)
- raspberrypi-pico:smp, sim:smp (x86_64)

Signed-off-by: Masayuki Ishikawa <asayuki.Ishikawa@jp.sony.com>
This commit is contained in:
Masayuki Ishikawa
2021-04-20 06:47:11 +09:00
committed by Xiang Xiao
parent f8e800765c
commit 1a9e7efde5
15 changed files with 11 additions and 28 deletions
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sched/Kconfig
-9
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@@ -291,15 +291,6 @@ config SMP_NCPUS
SMP configuration. However, running the SMP logic in a single CPU
configuration is useful during certain testing.
config SMP_IDLETHREAD_STACKSIZE
int "CPU IDLE stack size"
default DEFAULT_TASK_STACKSIZE
---help---
Each CPU will have its own IDLE task. System initialization occurs
on CPU0 and uses CONFIG_IDLETHREAD_STACKSIZE which will probably be
larger than is generally needed. This setting provides the stack
size for the IDLE task on CPUS 1 through (CONFIG_SMP_NCPUS-1).
endif # SMP
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