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SPU: Add Disable SPU GETLLAR Spin Optimization checkbox

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Megamouse 2025-03-17 19:00:55 +01:00 • committed by Elad
parent 1398e7702b
commit 1a51ce1e66
6 changed files with 52 additions and 40 deletions
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14
rpcs3/Emu/Cell/SPUThread.cpp
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@ -4615,15 +4615,15 @@ bool spu_thread::process_mfc_cmd()
if (getllar_busy_waiting_switch == umax && getllar_spin_count == 4)
{
const u32 percent = g_cfg.core.spu_getllar_busy_waiting_percentage;
// Hidden value to force busy waiting (100 to 1 are dynamically adjusted, 0 is not)
if (percent != 101)
if (!g_cfg.core.spu_getllar_spin_optimization_disabled)
{
const u32 percent = g_cfg.core.spu_getllar_busy_waiting_percentage;
// Predict whether or not to use operating system sleep based on history
auto& stats = getllar_wait_time[(addr % SPU_LS_SIZE) / 128];
const auto old_stats = stats;
const std::array<u8, 4> old_stats = stats;
std::array<u8, 4> new_stats{};
// Rotate history (prepare newest entry)
@ -4640,7 +4640,7 @@ bool spu_thread::process_mfc_cmd()
for (u8 val : old_stats)
{
total_wait += val;
zero_count += (val == 0 ? 1 : 0);
if (val == 0) ++zero_count;
}
// Add to chance if previous wait was long enough
@ -4675,10 +4675,8 @@ bool spu_thread::process_mfc_cmd()
// Don't be stubborn, force operating sleep if too much time has passed
else if (getllar_busy_waiting_switch == 1 && perf0.get() > getllar_evaluate_time && perf0.get() - getllar_evaluate_time >= 400'000)
{
const u32 percent = g_cfg.core.spu_getllar_busy_waiting_percentage;
// Hidden value to force busy waiting
if (percent != 101)
if (!g_cfg.core.spu_getllar_spin_optimization_disabled)
{
spu_log.trace("SPU wait for 0x%x", addr);
getllar_wait_time[(addr % SPU_LS_SIZE) / 128].front() = 1;