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Kernel: All processors use LAPIC timer when running with APIC

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This makes scheduler preemption much cleaner as bsb does not have to
send smp messages to notify other processes about timer interrupt.

Also PIT percision is now "full" 0.8 us instead of 1 ms that I was using
before.
This commit is contained in:
Bananymous
2024-07-23 02:28:52 +03:00
parent 3e0150f847
commit 539afb329a
17 changed files with 224 additions and 73 deletions
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9
kernel/kernel/Timer/Timer.cpp
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@@ -69,6 +69,11 @@ namespace Kernel
return m_timer->time_since_boot();
}
void SystemTimer::pre_scheduler_sleep_ns(uint64_t ns)
{
return m_timer->pre_scheduler_sleep_ns(ns);
}
void SystemTimer::sleep_ns(uint64_t ns) const
{
if (ns == 0)
@@ -76,10 +81,6 @@ namespace Kernel
const uint64_t wake_time_ns = ns_since_boot() + ns;
Processor::scheduler().block_current_thread(nullptr, wake_time_ns);
//const uint64_t current_time_ns = ns_since_boot();
//if (current_time_ns < wake_time_ns)
// dwarnln("sleep woke {} ms too soon", BAN::Math::div_round_up<uint64_t>(wake_time_ns - current_time_ns, 1'000'000));
}
timespec SystemTimer::real_time() const