Merge pull request #1 from tgrogers/copy-kernel

Copy kernel

1 files changed, 14 insertions, 0 deletions

diff --git a/src/gpgpu-sim/l2cache.h b/src/gpgpu-sim/l2cache.h
index 2cc0e76..2d13918 100644
--- a/src/gpgpu-sim/l2cache.h
+++ b/src/gpgpu-sim/l2cache.h
@@ -72,6 +72,7 @@ public:
    void print_stat( FILE *fp ) { m_dram->print_stat(fp); }
    void visualize() const { m_dram->visualize(); }
    void print( FILE *fp ) const;
+   void handle_memcpy_to_gpu( size_t dst_start_addr, unsigned subpart_id, mem_access_sector_mask_t mask );
 
    class memory_sub_partition * get_sub_partition(int sub_partition_id) 
    {
@@ -178,6 +179,12 @@ public:
    void accumulate_L2cache_stats(class cache_stats &l2_stats) const;
    void get_L2cache_sub_stats(struct cache_sub_stats &css) const;
 
+   void force_l2_tag_update(new_addr_type addr, unsigned time, mem_access_sector_mask_t mask)
+   {
+        m_L2cache->force_tag_access( addr, m_memcpy_cycle_offset + time, mask );
+        m_memcpy_cycle_offset += 1;
+   }
+
 private:
 // data
    unsigned m_id;  //< the global sub partition ID
@@ -210,6 +217,13 @@ private:
    friend class L2interface;
 
    std::vector<mem_fetch*> breakdown_request_to_sector_requests(mem_fetch* mf);
+
+   // This is a cycle offset that has to be applied to the l2 accesses to account for
+   // the cudamemcpy read/writes. We want GPGPU-Sim to only count cycles for kernel execution
+   // but we want cudamemcpy to go through the L2. Everytime an access is made from cudamemcpy
+   // this counter is incremented, and when the l2 is accessed (in both cudamemcpyies and otherwise)
+   // this value is added to the gpgpu-sim cycle counters.
+   unsigned m_memcpy_cycle_offset;
 };
 
 class L2interface : public mem_fetch_interface {