ruby: profiler: provide the number of vnets through ruby system

The aim is to ultimately do away with the static function
Network::getNumberOfVirtualNetworks().

configs/ruby/Ruby.py

@@ -231,6 +231,7 @@ def create_system(options, full_system, system, piobus = None, dma_ports = []):
             if buildEnv['TARGET_ISA'] == "x86":
                 cpu_seq.pio_slave_port = piobus.master
 
+    ruby.number_of_virtual_networks = ruby.network.number_of_virtual_networks
     ruby._cpu_ports = cpu_sequencers
     ruby.num_of_sequencers = len(cpu_sequencers)
 

src/mem/ruby/profiler/Profiler.cc

@@ -61,11 +61,10 @@ using namespace std;
 using m5::stl_helpers::operator<<;
 
 Profiler::Profiler(const RubySystemParams *p, RubySystem *rs)
-    : m_ruby_system(rs)
+    : m_ruby_system(rs), m_hot_lines(p->hot_lines),
+      m_all_instructions(p->all_instructions),
+      m_num_vnets(p->number_of_virtual_networks)
 {
-    m_hot_lines = p->hot_lines;
-    m_all_instructions = p->all_instructions;
-
     m_address_profiler_ptr = new AddressProfiler(p->num_of_sequencers, this);
     m_address_profiler_ptr->setHotLines(m_hot_lines);
     m_address_profiler_ptr->setAllInstructions(m_all_instructions);
@@ -98,8 +97,7 @@ Profiler::regStats(const std::string &pName)
         .desc("delay histogram for all message")
         .flags(Stats::nozero | Stats::pdf | Stats::oneline);
 
-    uint32_t numVNets = Network::getNumberOfVirtualNetworks();
-    for (int i = 0; i < numVNets; i++) {
+    for (int i = 0; i < m_num_vnets; i++) {
         delayVCHistogram.push_back(new Stats::Histogram());
         delayVCHistogram[i]
             ->init(10)
@@ -251,7 +249,6 @@ Profiler::collateStats()
         m_inst_profiler_ptr->collateStats();
     }
 
-    uint32_t numVNets = Network::getNumberOfVirtualNetworks();
     for (uint32_t i = 0; i < MachineType_NUM; i++) {
         for (map<uint32_t, AbstractController*>::iterator it =
                   m_ruby_system->m_abstract_controls[i].begin();
@@ -260,7 +257,7 @@ Profiler::collateStats()
             AbstractController *ctr = (*it).second;
             delayHistogram.add(ctr->getDelayHist());
 
-            for (uint32_t i = 0; i < numVNets; i++) {
+            for (uint32_t i = 0; i < m_num_vnets; i++) {
                 delayVCHistogram[i]->add(ctr->getDelayVCHist(i));
             }
         }

src/mem/ruby/profiler/Profiler.hh

@@ -79,8 +79,8 @@ class Profiler
     void addAddressTraceSample(const RubyRequest& msg, NodeID id);
 
     // added by SS
-    bool getHotLines() { return m_hot_lines; }
-    bool getAllInstructions() { return m_all_instructions; }
+    bool getHotLines() const { return m_hot_lines; }
+    bool getAllInstructions() const { return m_all_instructions; }
 
   private:
     // Private copy constructor and assignment operator
@@ -128,8 +128,9 @@ class Profiler
     Stats::Scalar m_IncompleteTimes[MachineType_NUM];
 
     //added by SS
-    bool m_hot_lines;
-    bool m_all_instructions;
+    const bool m_hot_lines;
+    const bool m_all_instructions;
+    const uint32_t m_num_vnets;
 };
 
 #endif // __MEM_RUBY_PROFILER_PROFILER_HH__

src/mem/ruby/system/RubySystem.py

@@ -41,11 +41,13 @@ class RubySystem(ClockedObject):
     memory_size_bits = Param.UInt32(64,
         "number of bits that a memory address requires");
 
-    # Profiler related configuration variables
-    hot_lines = Param.Bool(False, "")
-    all_instructions = Param.Bool(False, "")
-    num_of_sequencers = Param.Int("")
     phys_mem = Param.SimpleMemory(NULL, "")
 
     access_backing_store = Param.Bool(False, "Use phys_mem as the functional \
         store and only use ruby for timing.")
+
+    # Profiler related configuration variables
+    hot_lines = Param.Bool(False, "")
+    all_instructions = Param.Bool(False, "")
+    num_of_sequencers = Param.Int("")
+    number_of_virtual_networks = Param.Unsigned("")