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shell: optionally configure priority of the shell thread

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Currently, in Zephyr the shell thread is the lowest priority i.e.
K_LOWEST_APPLICATION_THREAD_PRIO. Due to this all the other threads can
preempt the shell thread. Proposed solution is to add Kconfig which
gives the flexibility to change the priority of the shell thread.

This is now implemented using a new Kconfig variable
SHELL_THREAD_PRIORITY_OVERRIDE. By setting this option
SHELL_THREAD_PRIORITY can be set.

Signed-off-by: Uday Ammu <udaykiran@google.com>
This commit is contained in:
Uday Ammu 2021-06-23 16:04:54 -07:00 • committed by Christopher Friedt
commit 17d2e9d084
2 changed files with 26 additions and 4 deletions
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13
subsys/shell/Kconfig
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@ -25,6 +25,19 @@ config SHELL_MINIMAL
defaults which favor reduced flash or memory requirements over extra
features.
config SHELL_THREAD_PRIORITY_OVERRIDE
bool "Override default shell thread priority"
help
Option to change the default value of shell thread priority.
if SHELL_THREAD_PRIORITY_OVERRIDE
config SHELL_THREAD_PRIORITY
int "Shell thread priority"
default 0
help
Set thread priority of the shell
endif
config SHELL_STACK_SIZE
int "Shell thread stack size"
default 3168 if OPENTHREAD_SHELL && OPENTHREAD_JOINER