diff --git a/src/mem/ruby/filters/MultiBitSelBloomFilter.hh b/src/mem/ruby/filters/MultiBitSelBloomFilter.hh
--- a/src/mem/ruby/filters/MultiBitSelBloomFilter.hh
+++ b/src/mem/ruby/filters/MultiBitSelBloomFilter.hh
@@ -40,7 +40,8 @@
 class MultiBitSelBloomFilter : public AbstractBloomFilter
 {
   public:
-    MultiBitSelBloomFilter(std::string config);
+    MultiBitSelBloomFilter(int size, int hashes, int skip_bits,
+                           bool parallel);
     ~MultiBitSelBloomFilter();
 
     void clear();
@@ -80,7 +81,7 @@
     int m_par_filter_size;
     int m_par_filter_size_bits;
 
-    bool isParallel;
+    bool m_is_parallel;
 };
 
 #endif // __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__
# Node ID 6fc675f956dcb68647abb7f69a6f3fe89fb1a318
# Parent  004c06dd157ac2ffa4f2f4ead77edfa1e2db99f0
diff --git a/src/mem/ruby/filters/MultiBitSelBloomFilter.cc b/src/mem/ruby/filters/MultiBitSelBloomFilter.cc
--- a/src/mem/ruby/filters/MultiBitSelBloomFilter.cc
+++ b/src/mem/ruby/filters/MultiBitSelBloomFilter.cc
@@ -34,25 +34,13 @@
 
 using namespace std;
 
-MultiBitSelBloomFilter::MultiBitSelBloomFilter(string str)
+MultiBitSelBloomFilter::MultiBitSelBloomFilter(int size, int hashes,
+                                               int skip_bits, bool parallel)
 {
-    vector<string> items;
-    tokenize(items, str, '_');
-    assert(items.size() == 4);
-
-    // head contains filter size, tail contains bit offset from block number
-    m_filter_size = atoi(items[0].c_str());
-    m_num_hashes = atoi(items[1].c_str());
-    m_skip_bits = atoi(items[2].c_str());
-
-    if (items[3] == "Regular") {
-        isParallel = false;
-    } else if (items[3] == "Parallel") {
-        isParallel = true;
-    } else {
-        panic("ERROR: Incorrect config string for MultiBitSel Bloom! :%s",
-              str);
-    }
+    m_filter_size = size;
+    m_num_hashes = hashes;
+    m_skip_bits = skip_bits;
+    m_is_parallel = parallel;
 
     m_filter_size_bits = floorLog2(m_filter_size);
 
@@ -175,7 +163,7 @@
     int y = hash_bitsel(x, i, m_num_hashes, 30, m_filter_size_bits);
     //36-bit addresses, 6-bit cache lines
 
-    if (isParallel) {
+    if (m_is_parallel) {
         return (y % m_par_filter_size) + i*m_par_filter_size;
     } else {
         return y % m_filter_size;