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LV2: Usleep loop pattern recognition

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This commit is contained in:
Elad 2024-12-30 17:05:07 +02:00
parent 64d6b88abd
commit 5fa2043e06
2 changed files with 23 additions and 5 deletions
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5
rpcs3/Emu/Cell/PPUThread.h
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@ -300,6 +300,11 @@ public:
const char* last_function{}; // Sticky copy of current_function, is not cleared on function return
const char* current_module{}; // Current module name, for savestates.
// Sycall pattern recognition variables
u64 last_lv2_deschedule_cia = umax; // Position of syscall that puts the PPU to sleep
u64 last_lv2_deschedule_r3 = umax; // R3 argument of syscall that puts the PPU to sleep
u64 last_lv2_deschedule_match_count = 0; // Arguments matching count when PPU puts to sleep
const bool is_interrupt_thread; // True for interrupts-handler threads
// Thread name

23
rpcs3/Emu/Cell/lv2/lv2.cpp
View file

@ -1339,11 +1339,13 @@ bool lv2_obj::sleep(cpu_thread& cpu, const u64 timeout)
if (cpu.get_class() == thread_class::ppu)
{
if (u32 addr = static_cast<ppu_thread&>(cpu).res_notify)
{
static_cast<ppu_thread&>(cpu).res_notify = 0;
ppu_thread& ppu = static_cast<ppu_thread&>(cpu);
if (static_cast<ppu_thread&>(cpu).res_notify_time != vm::reservation_notifier_count_index(addr).second)
if (u32 addr = ppu.res_notify)
{
ppu.res_notify = 0;
if (ppu.res_notify_time != vm::reservation_notifier_count_index(addr).second)
{
// Ignore outdated notification request
}
@ -1362,6 +1364,17 @@ bool lv2_obj::sleep(cpu_thread& cpu, const u64 timeout)
vm::reservation_notifier_notify(addr);
}
}
if (ppu.last_lv2_deschedule_cia == ppu.cia && ppu.last_lv2_deschedule_r3 == ppu.gpr[3])
{
ppu.last_lv2_deschedule_match_count++;
}
else
{
ppu.last_lv2_deschedule_cia = ppu.cia;
ppu.last_lv2_deschedule_r3 = ppu.gpr[3];
ppu.last_lv2_deschedule_match_count = 0;
}
}
bool result = false;
@ -2178,7 +2191,7 @@ bool lv2_obj::wait_timeout(u64 usec, ppu_thread* cpu, bool scale, bool is_usleep
static atomic_t<u64> g_success = 0;
static atomic_t<u64> g_fails = 0;
if (accuracy_type == sleep_timers_accuracy_level::_dynamic && avg_delay < 30 && avg_delay < (remaining + 15) / 2)
if ((accuracy_type == sleep_timers_accuracy_level::_dynamic && avg_delay < 30) && ((avg_delay < (remaining + 15) / 2) || (cpu && cpu->last_lv2_deschedule_match_count > 3)))
{
wait_for(remaining);