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Fix cpu pinning when no 'core id' present in /proc/cpuinfo (#7599)

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Geza Lore 2026-05-15 19:45:39 +01:00 committed by GitHub
parent 8c8d9b4f4c
commit 4e853d8cb6
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1 changed files with 17 additions and 7 deletions
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24
include/verilated_threads.cpp
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@ -180,6 +180,20 @@ std::string VlThreadPool::numaAssign(VerilatedContext* contextp) {
std::set<int> cores;
{
int processor = -1;
int core = -1;
const auto finishEntry = [&]() {
if (processor == -1) return;
// If "core id" is not known, assume all processors are on separate cores with same id.
if (core == -1) core = processor;
cores.emplace(core);
processor_core[processor] = core;
core_processors.emplace(core, processor);
unassigned_processors.push_back(processor);
processor = -1;
core = -1;
};
while (!is.eof()) {
std::string line;
std::getline(is, line);
@ -187,17 +201,13 @@ std::string VlThreadPool::numaAssign(VerilatedContext* contextp) {
int number = -1;
if (pos != std::string::npos) number = atoi(line.c_str() + pos + 1);
if (line.compare(0, std::strlen("processor"), "processor") == 0) {
finishEntry();
processor = number;
} else if (line.compare(0, std::strlen("core id"), "core id") == 0) {
const int core = number;
// std::cout << "p" << processor << " socket " << socket << " c" << core <<
// std::endl;
cores.emplace(core);
processor_core[processor] = core;
core_processors.emplace(core, processor);
unassigned_processors.push_back(processor);
core = number;
}
}
finishEntry();
}
// Start scheduling on the current CPU + 1.