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samples/synchronization: fix thread b pinning

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This commit adds a brief thread b suspend while the sample sets its
affinity mask.

If the call to `k_thread_cpu_pin` is being made while the thread is
actively running, then we get `-EINVAL` and the affinity mask is left
unchanged.

Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>
This commit is contained in:
Filip Kokosinski 2024-07-26 12:21:51 +02:00 committed by Fabio Baltieri
parent 39a70be4a0
commit 81cb80d923
1 changed files with 9 additions and 0 deletions
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9
samples/synchronization/src/main.c
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@ -110,7 +110,16 @@ int main(void)
#if PIN_THREADS #if PIN_THREADS
if (arch_num_cpus() > 1) { if (arch_num_cpus() > 1) {
k_thread_cpu_pin(&thread_a_data, 0); k_thread_cpu_pin(&thread_a_data, 0);
/*
* Thread b is a static thread that is spawned immediately. This means that the
* following `k_thread_cpu_pin` call can fail with `-EINVAL` if the thread is
* actively running. Let's suspend the thread and resume it after the affinity mask
* is set.
*/
k_thread_suspend(thread_b);
k_thread_cpu_pin(thread_b, 1); k_thread_cpu_pin(thread_b, 1);
k_thread_resume(thread_b);
} }
#endif #endif