optimised the percpu support patch.

removed kernel checks.

src/cc/frontends/clang/b_frontend_action.cc

@@ -571,11 +571,9 @@ bool BTypeVisitor::VisitVarDecl(VarDecl *Decl) {
     } else if (A->getName() == "maps/array") {
       map_type = BPF_MAP_TYPE_ARRAY;
     } else if (A->getName() == "maps/pc_hash") {
-      if (KERNEL_VERSION(major,minor,0) >= KERNEL_VERSION(4,5,0))
-        map_type = BPF_MAP_TYPE_PERCPU_HASH;
+      map_type = BPF_MAP_TYPE_PERCPU_HASH;
     } else if (A->getName() == "maps/pc_array") {
-      if (KERNEL_VERSION(major,minor,0) >= KERNEL_VERSION(4,5,0))
-        map_type = BPF_MAP_TYPE_PERCPU_ARRAY;
+      map_type = BPF_MAP_TYPE_PERCPU_ARRAY;
     } else if (A->getName() == "maps/histogram") {
       if (table.key_desc == "\"int\"")
         map_type = BPF_MAP_TYPE_ARRAY;

src/python/bcc/__init__.py

@@ -228,7 +228,7 @@ class BPF(object):
         cls = type(str(desc[0]), (base,), dict(_fields_=fields))
         return cls
 
-    def get_table(self, name, keytype=None, leaftype=None, func_reducer=None):
+    def get_table(self, name, keytype=None, leaftype=None, reducer=None):
         map_id = lib.bpf_table_id(self.module, name.encode("ascii"))
         map_fd = lib.bpf_table_fd(self.module, name.encode("ascii"))
         if map_fd < 0:
@@ -243,7 +243,7 @@ class BPF(object):
             if not leaf_desc:
                 raise Exception("Failed to load BPF Table %s leaf desc" % name)
             leaftype = BPF._decode_table_type(json.loads(leaf_desc.decode()))
-        return Table(self, map_id, map_fd, keytype, leaftype, func_reducer)
+        return Table(self, map_id, map_fd, keytype, leaftype, reducer=reducer)
 
     def __getitem__(self, key):
         if key not in self.tables: