qcacmn: Statically allocate CE desc history for MCL

As part of convergence, the CE descriptor history was moved to dynamic
allocation, per HIF handle. For MCL, this caused the allocation to
consume limited pre-allocated memory, causing regressions. For the MCL
implementation of alloc_mem_ce_debug_history(), use a static buffer
instead to avoid complications.

Change-Id: I8b0c0a2502d4abfd465749328a35004ffed585ca
CRs-Fixed: 2335146

hif/src/ce/ce_main.c

@@ -1241,20 +1241,46 @@ void free_mem_ce_debug_hist_data(struct hif_softc *scn, uint32_t ce_id)
 }
 #endif /* HIF_CE_DEBUG_DATA_BUF */
 
-/*
- * Note: For MCL, #if defined (HIF_CONFIG_SLUB_DEBUG_ON) needs to be checked
- * for defined here
- */
-#if defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF
+#if defined(HIF_CONFIG_SLUB_DEBUG_ON) /* MCL */
+struct hif_ce_desc_event hif_ce_desc_history[CE_COUNT_MAX][HIF_CE_HISTORY_MAX];
+
 /**
- * alloc_mem_ce_debug_history() - Allocate mem for the CE descriptors storing
+ * alloc_mem_ce_debug_history() - Allocate CE descriptor history
  * @scn: hif scn handle
- * ce_id: Copy Engine Id
+ * @ce_id: Copy Engine Id
  *
  * Return: QDF_STATUS
  */
-static inline QDF_STATUS alloc_mem_ce_debug_history(struct hif_softc *scn,
-						unsigned int CE_id)
+static QDF_STATUS
+alloc_mem_ce_debug_history(struct hif_softc *scn, unsigned int ce_id)
+{
+	struct ce_desc_hist *ce_hist = &scn->hif_ce_desc_hist;
+
+	ce_hist->hist_ev[ce_id] = hif_ce_desc_history[ce_id];
+	ce_hist->enable[ce_id] = 1;
+
+	return QDF_STATUS_SUCCESS;
+}
+
+/**
+ * free_mem_ce_debug_history() - Free CE descriptor history
+ * @scn: hif scn handle
+ * @ce_id: Copy Engine Id
+ *
+ * Return: None
+ */
+static void free_mem_ce_debug_history(struct hif_softc *scn, unsigned int ce_id)
+{
+	struct ce_desc_hist *ce_hist = &scn->hif_ce_desc_hist;
+
+	ce_hist->enable[ce_id] = 0;
+	ce_hist->hist_ev[ce_id] = NULL;
+}
+
+#elif HIF_CE_DEBUG_DATA_BUF /* WIN */
+
+static QDF_STATUS
+alloc_mem_ce_debug_history(struct hif_softc *scn, unsigned int CE_id)
 {
 	scn->hif_ce_desc_hist.hist_ev[CE_id] = (struct hif_ce_desc_event *)
 	qdf_mem_malloc(HIF_CE_HISTORY_MAX * sizeof(struct hif_ce_desc_event));
@@ -1268,35 +1294,37 @@ static inline QDF_STATUS alloc_mem_ce_debug_history(struct hif_softc *scn,
 	}
 }
 
-/**
- * free_mem_ce_debug_history() - Free mem allocated for the CE descriptors
- * storing.
- * @scn: hif scn handle
- * ce_id: Copy Engine Id
- *
- * Return:
- */
-static inline void free_mem_ce_debug_history(struct hif_softc *scn,
-						unsigned int CE_id)
+static void free_mem_ce_debug_history(struct hif_softc *scn, unsigned int CE_id)
 {
 	struct ce_desc_hist *ce_hist = &scn->hif_ce_desc_hist;
-	struct hif_ce_desc_event *hist_ev =
-			(struct hif_ce_desc_event *)ce_hist->hist_ev[CE_id];
+	struct hif_ce_desc_event *hist_ev = ce_hist->hist_ev[CE_id];
 
 	if (!hist_ev)
 		return;
 
-#if HIF_CE_DEBUG_DATA_BUF
 	if (ce_hist->data_enable[CE_id] == 1) {
 		ce_hist->data_enable[CE_id] = 0;
 		free_mem_ce_debug_hist_data(scn, CE_id);
 	}
-#endif
+
 	ce_hist->enable[CE_id] = 0;
 	qdf_mem_free(ce_hist->hist_ev[CE_id]);
 	ce_hist->hist_ev[CE_id] = NULL;
 }
 
+#else /* Disabled */
+
+static inline QDF_STATUS
+alloc_mem_ce_debug_history(struct hif_softc *scn, unsigned int CE_id)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline void
+free_mem_ce_debug_history(struct hif_softc *scn, unsigned int CE_id) { }
+#endif
+
+#if defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF
 /**
  * reset_ce_debug_history() - reset the index and ce id used for dumping the
  * CE records on the console using sysfs.
@@ -1313,22 +1341,9 @@ static inline void reset_ce_debug_history(struct hif_softc *scn)
 	ce_hist->hist_index = 0;
 	ce_hist->hist_id = 0;
 }
-#else /*Note: #if defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF */
-static inline QDF_STATUS alloc_mem_ce_debug_history(struct hif_softc *scn,
-						unsigned int CE_id)
-{
-	return QDF_STATUS_SUCCESS;
-}
-
-static inline void free_mem_ce_debug_history(struct hif_softc *scn,
-						unsigned int CE_id)
-{
-}
-
-static inline void reset_ce_debug_history(struct hif_softc *scn)
-{
-}
-#endif /*Note: defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF */
+#else /* defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF */
+static inline void reset_ce_debug_history(struct hif_softc *scn) { }
+#endif /* defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF */
 
 void ce_enable_polling(void *cestate)
 {