Track explicit number of cachelines to be reparted

Instead of redunant calculating number of cachlines to be reparted, keep this
information in request's info

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>

src/engine/engine_common.c

@@ -128,6 +128,7 @@ void ocf_engine_update_req_info(struct ocf_cache *cache,
 			 * Need to move this cache line into other partition
 			 */
 			_entry->re_part = req->info.re_part = true;
+			req->info.re_part_no++;
 		}
 
 		break;

src/engine/engine_common.h

@@ -47,6 +47,20 @@ static inline bool ocf_engine_is_hit(struct ocf_request *req)
  */
 #define ocf_engine_is_miss(req) (!ocf_engine_is_hit(req))
 
+/**
+ * @brief Check if all the cache lines are assigned to a good partition
+ *
+ * @param req OCF request
+ *
+ * @retval true request's cache lines are assigned to a good partition
+ * @retval false some of the request's cache lines needs to be reassigned to
+ * a target partition
+ */
+static inline bool ocf_engine_needs_repart(struct ocf_request *req)
+{
+	return req->info.re_part_no > 0;
+}
+
 /**
  * @brief Check if all cache lines are mapped fully
  *
@@ -98,6 +112,18 @@ static inline uint32_t ocf_engine_unmapped_count(struct ocf_request *req)
 	return req->core_line_count - (req->info.hit_no + req->info.invalid_no);
 }
 
+/**
+ * @brief Get number of cache lines to repart
+ *
+ * @param req OCF request
+ *
+ * @retval Number of cache lines to repart
+ */
+static inline uint32_t ocf_engine_repart_count(struct ocf_request *req)
+{
+	return req->info.re_part_no;
+}
+
 /**
  * @brief Get number of IOs to perform cache read or write
  *

src/ocf_request.h

@@ -13,9 +13,10 @@
 struct ocf_req_allocator;
 
 struct ocf_req_info {
-	/* Number of hits, invalid, misses. */
+	/* Number of hits, invalid, misses, reparts. */
 	unsigned int hit_no;
 	unsigned int invalid_no;
+	unsigned int re_part_no;
 
 	uint32_t dirty_all;
 	/*!< Number of dirty line in request*/