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Kernel: Cleanup scheduling while idling

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If there are no threads in the run queue and we are idle, attempt to
wake up threads from the sleep queue
This commit is contained in:
Bananymous
2025-12-30 16:15:09 +02:00
parent b0bd4ad546
commit 31a1968798
2 changed files with 28 additions and 16 deletions
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42
kernel/kernel/Scheduler.cpp
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@@ -290,10 +290,34 @@ namespace Kernel
m_current->last_start_ns = SystemTimer::get().ns_since_boot();
}
void Scheduler::wake_up_sleeping_threads()
{
const uint64_t current_ns = SystemTimer::get().ns_since_boot();
while (!m_block_queue.empty() && current_ns >= m_block_queue.front()->wake_time_ns)
{
auto* node = m_block_queue.pop_front();
{
SpinLockGuard _(node->blocker_lock);
if (node->blocker)
node->blocker->remove_blocked_thread(node);
}
node->blocked = false;
update_most_loaded_node_queue(node, &m_run_queue);
m_run_queue.add_thread_to_back(node);
}
}
void Scheduler::reschedule_if_idle()
{
ASSERT(Processor::get_interrupt_state() == InterruptState::Disabled);
if (!m_current && !m_run_queue.empty())
if (m_current != nullptr)
return;
if (m_run_queue.empty())
wake_up_sleeping_threads();
if (!m_run_queue.empty())
Processor::yield();
}
@@ -304,21 +328,7 @@ namespace Kernel
if (Processor::is_smp_enabled())
do_load_balancing();
{
const uint64_t current_ns = SystemTimer::get().ns_since_boot();
while (!m_block_queue.empty() && current_ns >= m_block_queue.front()->wake_time_ns)
{
auto* node = m_block_queue.pop_front();
{
SpinLockGuard _(node->blocker_lock);
if (node->blocker)
node->blocker->remove_blocked_thread(node);
}
node->blocked = false;
update_most_loaded_node_queue(node, &m_run_queue);
m_run_queue.add_thread_to_back(node);
}
}
wake_up_sleeping_threads();
{
const uint64_t current_ns = SystemTimer::get().ns_since_boot();