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sched: if last cpu is idle, run on it

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Matheus
2026-09-19 12:50:00 -03:00
parent 7a533242ad
commit c347afc761
1 changed files with 6 additions and 0 deletions
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kernel-src/sys/topology.c
+6
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@@ -90,6 +90,12 @@ cpu_t *topology_find_next_cpu_to_run(topology_node_t *last_cpu, thread_t *thread
if (sleep_time <= SCHED_SLEEP_TIME_LIMIT_CPU_US && sched_thread_can_run_in_cpu(thread, last_cpu->cpu->last_queue, last_cpu->cpu->last_interactivity)) if (sleep_time <= SCHED_SLEEP_TIME_LIMIT_CPU_US && sched_thread_can_run_in_cpu(thread, last_cpu->cpu->last_queue, last_cpu->cpu->last_interactivity))
return last_cpu->cpu; return last_cpu->cpu;
spinlock_acquire(&sched_idle_cpu_bitmap_lock);
bool last_cpu_idle = bitmap_get(&sched_idle_cpu_bitmap, last_cpu->cpu->internal_id);
spinlock_release(&sched_idle_cpu_bitmap_lock);
if (last_cpu_idle)
return last_cpu->cpu;
cpu_t *cpu = search_internal_recursive_up(last_cpu->parent, last_cpu, thread, sleep_time, 2); cpu_t *cpu = search_internal_recursive_up(last_cpu->parent, last_cpu, thread, sleep_time, 2);
return cpu; return cpu;