qcacmn: Add NAPI stats

Add basic stats to track NAPI polls & schedules.

Change-Id: Iea8f21fc08d4a5de62e00f32ffdc020f8364ced1
CRs-Fixed: 2083867

dp/inc/cdp_txrx_cmn_struct.h

@@ -65,6 +65,7 @@
 #define CDP_NAPI_STATS              9
 #define CDP_WLAN_RX_BUF_DEBUG_STATS 10
 #define CDP_RX_RING_STATS          11
+#define CDP_DP_NAPI_STATS          12
 #define CDP_SCHEDULER_STATS        21
 #define CDP_TX_QUEUE_STATS         22
 #define CDP_BUNDLE_STATS           23

dp/wifi3.0/dp_main.c

@@ -3893,6 +3893,15 @@ static int dp_txrx_stats(struct cdp_vdev *vdev, enum cdp_stats stats)
 	return 0;
 }
 
+/*
+ * dp_print_napi_stats(): NAPI stats
+ * @soc - soc handle
+ */
+static void dp_print_napi_stats(struct dp_soc *soc)
+{
+	hif_print_napi_stats(soc->hif_handle);
+}
+
 /*
  * dp_print_per_ring_stats(): Packet count per ring
  * @soc - soc handle
@@ -4087,6 +4096,10 @@ static QDF_STATUS dp_txrx_dump_stats(void *psoc, uint16_t value)
 		cdp_dump_flow_pool_info((struct cdp_soc_t *)soc);
 		break;
 
+	case CDP_DP_NAPI_STATS:
+		dp_print_napi_stats(soc);
+		break;
+
 	case CDP_TXRX_DESC_STATS:
 		/* TODO: NOT IMPLEMENTED */
 		break;

hif/inc/hif.h

@@ -895,6 +895,7 @@ void hif_update_pipe_callback(struct hif_opaque_softc *osc,
 				u_int8_t pipeid,
 				struct hif_msg_callbacks *callbacks);
 
+void hif_print_napi_stats(struct hif_opaque_softc *hif_ctx);
 #ifdef __cplusplus
 }
 #endif

hif/src/hif_exec.c

@@ -20,6 +20,41 @@
 #include <ce_main.h>
 #include <hif_irq_affinity.h>
 
+/**
+ * hif_print_napi_stats() - print NAPI stats
+ * @hif_ctx: hif context
+ *
+ * return: void
+ */
+void hif_print_napi_stats(struct hif_opaque_softc *hif_ctx)
+{
+	struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(hif_ctx);
+	struct hif_exec_context *hif_ext_group;
+	struct qca_napi_stat *napi_stats;
+	int i, j;
+
+	QDF_TRACE(QDF_MODULE_ID_HIF, QDF_TRACE_LEVEL_FATAL,
+		"NAPI[#ctx]CPU[#] |schedules |polls |completes |workdone\n");
+
+	for (i = 0; i < hif_state->hif_num_extgroup; i++) {
+		if (hif_state->hif_ext_group[i]) {
+			hif_ext_group = hif_state->hif_ext_group[i];
+			for (j = 0; j < num_possible_cpus(); j++) {
+				napi_stats = &(hif_ext_group->stats[j]);
+				if (napi_stats->napi_schedules != 0)
+					QDF_TRACE(QDF_MODULE_ID_HIF,
+						QDF_TRACE_LEVEL_FATAL,
+						"NAPI[%2d]CPU[%d]: "
+						"%7d %7d %7d %7d \n",
+						i, j,
+						napi_stats->napi_schedules,
+						napi_stats->napi_polls,
+						napi_stats->napi_completes,
+						napi_stats->napi_workdone);
+			}
+		}
+	}
+}
 
 static void hif_exec_tasklet_schedule(struct hif_exec_context *ctx)
 {
@@ -65,6 +100,7 @@ static int hif_exec_poll(struct napi_struct *napi, int budget)
 	struct hif_exec_context *hif_ext_group = &exec_ctx->exec_ctx;
 	struct hif_softc *scn = HIF_GET_SOFTC(hif_ext_group->hif);
 	int work_done;
+	int cpu = smp_processor_id();
 
 	work_done = hif_ext_group->handler(hif_ext_group->context, budget);
 
@@ -75,12 +111,16 @@ static int hif_exec_poll(struct napi_struct *napi, int budget)
 		napi_complete(napi);
 		qdf_atomic_dec(&scn->active_grp_tasklet_cnt);
 		hif_ext_group->irq_enable(hif_ext_group);
+		hif_ext_group->stats[cpu].napi_completes++;
 	} else {
 		/* if the ext_group supports time based yield, claim full work
 		 * done anyways */
 		work_done = budget;
 	}
 
+	hif_ext_group->stats[cpu].napi_polls++;
+	hif_ext_group->stats[cpu].napi_workdone += work_done;
+
 	return work_done;
 }
 
@@ -91,6 +131,7 @@ static int hif_exec_poll(struct napi_struct *napi, int budget)
 static void hif_exec_napi_schedule(struct hif_exec_context *ctx)
 {
 	struct hif_napi_exec_context *n_ctx = hif_exec_get_napi(ctx);
+	ctx->stats[smp_processor_id()].napi_schedules++;
 
 	napi_schedule(&n_ctx->napi);
 }