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SPU: Power consumption reduction when using SPU inaccurate reservations

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Eladash 2022-09-12 19:39:08 +03:00 • committed by Ivan
parent 92514e33bb
commit cfdc852f03
3 changed files with 55 additions and 1 deletions
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28
rpcs3/Emu/Cell/SPUThread.cpp
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@ -4336,6 +4336,14 @@ s64 spu_thread::get_ch_value(u32 ch)
return true;
});
if (raddr - spurs_addr <= 0x80 && !g_cfg.core.spu_accurate_reservations && mask1 == SPU_EVENT_LR)
{
// Wait without timeout, in this situation we have notifications for all writes making it possible
// Abort notifications are handled specially for performance reasons
vm::reservation_notifier(raddr).wait(rtime, -128);
continue;
}
vm::reservation_notifier(raddr).wait(rtime, -128, atomic_wait_timeout{80'000});
}
else
@ -5219,6 +5227,8 @@ bool spu_thread::stop_and_signal(u32 code)
break;
}
u32 prev_resv = 0;
for (auto& thread : group->threads)
{
if (thread)
@ -5227,10 +5237,26 @@ bool spu_thread::stop_and_signal(u32 code)
if (thread.get() != this && thread->state & cpu_flag::ret)
{
thread_ctrl::notify(*thread);
if (u32 resv = atomic_storage<u32>::load(thread->raddr))
{
if (prev_resv && prev_resv != resv)
{
// Batch reservation notifications if possible
vm::reservation_notifier(prev_resv).notify_all();
}
prev_resv = resv;
}
}
}
}
if (prev_resv)
{
vm::reservation_notifier(prev_resv).notify_all();
}
check_state();
return true;
}