Updating Traffic Generators (#1416)

Added documentation for `strided_generator.py` and
`strided_generator_core.py.`

Updated clarity of documentation for `linear_generator.py`,
`linear_generator_core.py`, `random_generator.py`, and
`random_generator_core.py`.

Made `max_addr` exclusive instead of inclusive for strided and linear
traffic generation in `strided_gen.cc` and `linear_gen.cc`.

src/cpu/testers/traffic_gen/linear_gen.cc

@@ -78,7 +78,7 @@ LinearGen::getNextPacket()
 
     // If we have reached the end of the address space, reset the
     // address to the start of the range
-    if (nextAddr > endAddr) {
+    if (nextAddr >= endAddr) {
         DPRINTF(TrafficGen, "Wrapping address to the start of "
                 "the range\n");
         nextAddr = startAddr;

src/cpu/testers/traffic_gen/strided_gen.cc

@@ -101,7 +101,7 @@ StridedGen::getNextPacket()
 
     // If we have reached the end of the address space, reset the
     // address to the start of the range
-    if (nextAddr > endAddr) {
+    if (nextAddr >= endAddr) {
         DPRINTF(TrafficGen, "Wrapping address to the start of "
                 "the range\n");
         nextAddr = startAddr + offset;