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[Backport v3.7-branch] bug-fix: RTIO Workqueue working during Device Initialization #85902

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[Backport v3.7-branch] bug-fix: RTIO Workqueue working during Device Initialization #85902

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6b839cf
p4wq: Add Kconfig to perform early init on threads
ubieda Feb 14, 2025
91e13d9
rtio: workq: Select Early P4WQ threads init
ubieda Feb 14, 2025
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10 changes: 10 additions & 0 deletions lib/os/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,16 @@ config MPSC_CLEAR_ALLOCATED
When enabled packet space is zeroed before returning from allocation.
endif

if SCHED_DEADLINE

config P4WQ_INIT_STAGE_EARLY
bool "Early initialization of P4WQ threads"
help
Initialize P4WQ threads early so that the P4WQ can be used on devices
initialization sequence.

endif

config REBOOT
bool "Reboot functionality"
help
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4 changes: 4 additions & 0 deletions lib/os/p4wq.c
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Expand Up @@ -213,7 +213,11 @@ void k_p4wq_enable_static_thread(struct k_p4wq *queue, struct k_thread *thread,
* so they can initialize in parallel instead of serially on the main
* CPU.
*/
#if defined(CONFIG_P4WQ_INIT_STAGE_EARLY)
SYS_INIT(static_init, POST_KERNEL, 1);
#else
SYS_INIT(static_init, APPLICATION, 99);
#endif

void k_p4wq_submit(struct k_p4wq *queue, struct k_p4wq_work *item)
{
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1 change: 1 addition & 0 deletions subsys/rtio/Kconfig.workq
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Expand Up @@ -4,6 +4,7 @@
config RTIO_WORKQ
bool "RTIO Work-queues service to process Sync operations"
select SCHED_DEADLINE
select P4WQ_INIT_STAGE_EARLY
select RTIO_CONSUME_SEM
help
Enable RTIO Work-queues to allow processing synchronous operations
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