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kernel: fix main/work_q prios in coop/preempt-only modes

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-1 is reserved for the idle thread in coop-only mode and -1 does not
exist as a priority in preempt-only mode.

With this change, the philosophers demo runs in preempt-only mode.

Change-Id: Id15a6eafc7582966deaf0db9ed6960b5da74be33
Signed-off-by: Benjamin Walsh <walsh.benj@gmail.com>
This commit is contained in:
Benjamin Walsh 2017-01-14 18:50:22 -05:00 • committed by Anas Nashif
commit e669559010
1 changed files with 3 additions and 1 deletions
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4
kernel/Kconfig
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@ -89,7 +89,7 @@ config MAIN_THREAD_PRIORITY
int int
prompt "Priority of initialization/main thread" prompt "Priority of initialization/main thread"
default 0 default 0
default -1 if NUM_PREEMPT_PRIORITIES = 0 default -2 if !PREEMPT_ENABLED
help help
Priority at which the initialization thread runs, including the start Priority at which the initialization thread runs, including the start
of the main() function. main() can then change its priority if desired. of the main() function. main() can then change its priority if desired.
@ -231,6 +231,8 @@ config SYSTEM_WORKQUEUE_STACK_SIZE
config SYSTEM_WORKQUEUE_PRIORITY config SYSTEM_WORKQUEUE_PRIORITY
int "System workqueue priority" int "System workqueue priority"
default -1 default -1
default 0 if !COOP_ENABLED
default -2 if COOP_ENABLED && !PREEMPT_ENABLED
config OFFLOAD_WORKQUEUE_STACK_SIZE config OFFLOAD_WORKQUEUE_STACK_SIZE
int "Workqueue stack size for thread offload requests" int "Workqueue stack size for thread offload requests"