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CONFIG_SCHED_DUMB¶
Simple linked-list ready queue
Type: bool
Help¶
When selected, the scheduler ready queue will be implemented as a simple unordered list, with very fast constant time performance for single threads and very low code size. Choose this on systems with constrained code size that will never see more than a small number (3, maybe) of runnable threads in the queue at any given time. On most platforms (that are not otherwise using the red/black tree) this results in a savings of ~2k of code size.
Direct dependencies¶
<choice SCHED_ALGORITHM: Scheduler priority queue algorithm>
(Includes any dependencies from if’s and menus.)
Kconfig definition¶
At kernel/Kconfig:220
Included via Kconfig:10 → Kconfig.zephyr:31
Menu path: (top menu) → General Kernel Options → Scheduler priority queue algorithm
config SCHED_DUMB
bool
prompt "Simple linked-list ready queue" if <choice SCHED_ALGORITHM: Scheduler priority queue algorithm>
depends on <choice SCHED_ALGORITHM: Scheduler priority queue algorithm>
help
When selected, the scheduler ready queue will be implemented
as a simple unordered list, with very fast constant time
performance for single threads and very low code size.
Choose this on systems with constrained code size that will
never see more than a small number (3, maybe) of runnable
threads in the queue at any given time. On most platforms
(that are not otherwise using the red/black tree) this
results in a savings of ~2k of code size.
(Definitions include propagated dependencies, including from if’s and menus.)