From 0f088dc11a47cb3de905de3483f6a1c019b7d283 Mon Sep 17 00:00:00 2001
From: JRPAN <25518778+JRPan@users.noreply.github.com>
Date: Wed, 16 Jun 2021 10:22:57 -0400
Subject: correct dirty counter

---
 src/gpgpu-sim/gpu-cache.cc | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'src/gpgpu-sim')

diff --git a/src/gpgpu-sim/gpu-cache.cc b/src/gpgpu-sim/gpu-cache.cc
index a35f502..c93ac5f 100644
--- a/src/gpgpu-sim/gpu-cache.cc
+++ b/src/gpgpu-sim/gpu-cache.cc
@@ -428,9 +428,11 @@ void tag_array::fill(new_addr_type addr, unsigned time,
 
 void tag_array::fill(unsigned index, unsigned time, mem_fetch *mf) {
   assert(m_config.m_alloc_policy == ON_MISS);
-  m_lines[index]->fill(time, mf->get_access_sector_mask(),
-                       mf->get_access_byte_mask());
-  m_dirty++;
+  bool before = m_lines[index]->is_modified_line();
+  m_lines[index]->fill(time, mf->get_access_sector_mask(), mf->get_access_byte_mask());
+  if (m_lines[index]->is_modified_line() && !before) {
+    m_dirty++;
+  }
 }
 
 // TODO: we need write back the flushed data to the upper level
-- 
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