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SPU/vm: Improve vm::range_lock a bit

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Use some prefetching
Use optimistic locking
This commit is contained in:
Nekotekina 2020-11-08 17:21:19 +03:00
parent 3507cd0a37
commit 8bc9868c1f
3 changed files with 29 additions and 21 deletions
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21
rpcs3/Emu/Cell/SPUThread.cpp
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@ -1736,6 +1736,8 @@ void spu_thread::push_snr(u32 number, u32 value)
void spu_thread::do_dma_transfer(spu_thread* _this, const spu_mfc_cmd& args, u8* ls)
{
perf_meter<"DMA"_u32> perf_;
const bool is_get = (args.cmd & ~(MFC_BARRIER_MASK | MFC_FENCE_MASK | MFC_START_MASK)) == MFC_GET_CMD;
u32 eal = args.eal;
@ -1834,14 +1836,8 @@ void spu_thread::do_dma_transfer(spu_thread* _this, const spu_mfc_cmd& args, u8*
if ((!g_use_rtm && !is_get) || g_cfg.core.spu_accurate_dma) [[unlikely]]
{
perf_meter<"ADMA_GET"_u64> perf_get;
perf_meter<"ADMA_PUT"_u64> perf_put = perf_get;
if (!g_cfg.core.spu_accurate_dma) [[likely]]
{
perf_put.reset();
perf_get.reset();
}
perf_meter<"ADMA_GET"_u64> perf_get = perf_;
perf_meter<"ADMA_PUT"_u64> perf_put = perf_;
cpu_thread* _cpu = _this ? _this : get_current_cpu_thread();
@ -1864,6 +1860,8 @@ void spu_thread::do_dma_transfer(spu_thread* _this, const spu_mfc_cmd& args, u8*
range_lock = _this->range_lock;
}
_m_prefetchw(range_lock);
for (u32 size = args.size, size0; is_get; size -= size0, dst += size0, src += size0, eal += size0)
{
size0 = std::min<u32>(128 - (eal & 127), std::min<u32>(size, 128));
@ -2161,8 +2159,13 @@ void spu_thread::do_dma_transfer(spu_thread* _this, const spu_mfc_cmd& args, u8*
//std::atomic_thread_fence(std::memory_order_seq_cst);
return;
}
else
{
perf_put.reset();
perf_get.reset();
}
perf_meter<"DMA_PUT"_u64> perf2;
perf_meter<"DMA_PUT"_u64> perf2 = perf_;
switch (u32 size = args.size)
{