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cpu affinity arm processors

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daviDarthemis 2024-12-08 17:05:22 -03:00
parent 756aea5187
commit 935c4e1a23
1 changed files with 65 additions and 0 deletions
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65
Utilities/Thread.cpp
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@ -15,6 +15,10 @@
#include "Emu/CPU/Backends/AArch64/AArch64Signal.h"
#endif
#if defined(ARCH_ARM64) && !defined(__APPLE__)
#include <fstream>
#endif
#ifdef _WIN32
#include <Windows.h>
#include <Psapi.h>
@ -2868,6 +2872,65 @@ void thread_ctrl::detect_cpu_layout()
}
}
#if defined(ARCH_ARM64) && !defined(__APPLE__)
void detect_big_little_topology(std::vector<int>& big_cores, std::vector<int>& little_cores, std::vector<int>& prime_cores)
{
big_cores.clear();
little_cores.clear();
prime_cores.clear();
const std::string base_path = "/sys/devices/system/cpu/";
for (unsigned int i = 0; i < 8; ++i)
{
std::ifstream infile(base_path + "cpu" + std::to_string(i) + "/cpufreq/cpuinfo_max_freq");
if (infile)
{
int freq;
infile >> freq;
if(freq < 2400000)
little_cores.push_back(i);
if (freq > 2400000 && freq < 2800000)
big_cores.push_back(i);
if (freq > 2800000)
prime_cores.push_back(i);
}
}
}
u64 thread_ctrl::get_affinity_mask(thread_class group)
{
std::vector<int> prime_cores, big_cores, little_cores;
detect_big_little_topology(big_cores, little_cores, prime_cores);
u64 prime_mask = 0, big_mask = 0, little_mask = 0;
for (int core : big_cores)
big_mask |= (1UL << core);
for (int core : little_cores)
little_mask |= (1UL << core);
for (int core : prime_cores)
prime_mask |= (1UL << core);
switch (group)
{
default:
case thread_class::general:
return big_mask | little_mask | prime_mask;
case thread_class::rsx:
return big_mask;
case thread_class::ppu:
return big_mask | prime_mask;
case thread_class::spu:
return little_mask;
}
}
#else
u64 thread_ctrl::get_affinity_mask(thread_class group)
{
detect_cpu_layout();
@ -3077,6 +3140,8 @@ u64 thread_ctrl::get_affinity_mask(thread_class group)
return -1;
}
#endif
void thread_ctrl::set_native_priority(int priority)
{
#ifdef _WIN32