qcacmn: Avoid logging in packet transmission path

Currently if the driver is in runtime suspend/suspending
state, any packet transmission will request for resume
via hif_pm_runtime_get.

Unfortunately there is a logging in the above API which
will lead to more time consumption in the NET_TX softirq
context. This can lead to other delay in processing other
softirqs in the system.

Fix this by skipping the logging in the packet transmission
path.

Change-Id: Icc9f5b67794f7666243eb059f2e07a06a987002e
CRs-Fixed: 2844126

dp/wifi3.0/dp_tx.c

@@ -1433,7 +1433,7 @@ dp_tx_hw_enqueue(struct dp_soc *soc, struct dp_vdev *vdev,
 
 ring_access_fail:
 	if (hif_pm_runtime_get(soc->hif_handle,
-			       RTPM_ID_DW_TX_HW_ENQUEUE) == 0) {
+			       RTPM_ID_DW_TX_HW_ENQUEUE, true) == 0) {
 		dp_tx_ring_access_end(soc, hal_ring_hdl, coalesce);
 		hif_pm_runtime_put(soc->hif_handle,
 				   RTPM_ID_DW_TX_HW_ENQUEUE);

hal/wifi3.0/hal_reo.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2021 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -455,7 +455,7 @@ inline int hal_reo_cmd_queue_stats(hal_ring_handle_t  hal_ring_hdl,
 			      cmd->u.stats_params.clear);
 
 	if (hif_pm_runtime_get(hal_soc->hif_handle,
-			       RTPM_ID_HAL_REO_CMD) == 0) {
+			       RTPM_ID_HAL_REO_CMD, false) == 0) {
 		hal_srng_access_end(hal_soc_hdl, hal_ring_hdl);
 		hif_pm_runtime_put(hal_soc->hif_handle,
 				   RTPM_ID_HAL_REO_CMD);
@@ -592,7 +592,7 @@ inline int hal_reo_cmd_flush_cache(hal_ring_handle_t hal_ring_hdl,
 		cp->flush_all);
 
 	if (hif_pm_runtime_get(hal_soc->hif_handle,
-			       RTPM_ID_HAL_REO_CMD) == 0) {
+			       RTPM_ID_HAL_REO_CMD, false) == 0) {
 		hal_srng_access_end(hal_soc_hdl, hal_ring_hdl);
 		hif_pm_runtime_put(hal_soc->hif_handle,
 				   RTPM_ID_HAL_REO_CMD);
@@ -916,7 +916,7 @@ inline int hal_reo_cmd_update_rx_queue(hal_ring_handle_t hal_ring_hdl,
 		PN_127_96, p->pn_127_96);
 
 	if (hif_pm_runtime_get(hal_soc->hif_handle,
-			       RTPM_ID_HAL_REO_CMD) == 0) {
+			       RTPM_ID_HAL_REO_CMD, false) == 0) {
 		hal_srng_access_end(hal_soc_hdl, hal_ring_hdl);
 		hif_pm_runtime_put(hal_soc->hif_handle,
 				   RTPM_ID_HAL_REO_CMD);

hif/inc/hif.h

@@ -1031,7 +1031,8 @@ int hif_pm_runtime_put_sync_suspend(struct hif_opaque_softc *hif_ctx,
 				    wlan_rtpm_dbgid rtpm_dbgid);
 int hif_pm_runtime_request_resume(struct hif_opaque_softc *hif_ctx);
 int hif_pm_runtime_get(struct hif_opaque_softc *hif_ctx,
-		       wlan_rtpm_dbgid rtpm_dbgid);
+		       wlan_rtpm_dbgid rtpm_dbgid,
+		       bool is_critical_ctx);
 void hif_pm_runtime_get_noresume(struct hif_opaque_softc *hif_ctx,
 				 wlan_rtpm_dbgid rtpm_dbgid);
 int hif_pm_runtime_put(struct hif_opaque_softc *hif_ctx,
@@ -1079,7 +1080,8 @@ hif_pm_runtime_get_noresume(struct hif_opaque_softc *hif_ctx,
 {}
 
 static inline int
-hif_pm_runtime_get(struct hif_opaque_softc *hif_ctx, wlan_rtpm_dbgid rtpm_dbgid)
+hif_pm_runtime_get(struct hif_opaque_softc *hif_ctx, wlan_rtpm_dbgid rtpm_dbgid,
+		   bool is_critical_ctx)
 { return 0; }
 static inline int
 hif_pm_runtime_put(struct hif_opaque_softc *hif_ctx, wlan_rtpm_dbgid rtpm_dbgid)

hif/src/ce/ce_service_legacy.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2021 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -148,7 +148,7 @@ int ce_send_fast(struct CE_handle *copyeng, qdf_nbuf_t msdu,
 	 * sure there is no PCIe link access.
 	 */
 	if (hif_pm_runtime_get(hif_hdl,
-			       RTPM_ID_CE_SEND_FAST) != 0)
+			       RTPM_ID_CE_SEND_FAST, false) != 0)
 		ok_to_send = false;
 
 	if (ok_to_send) {

hif/src/hif_runtime_pm.c

@@ -1150,6 +1150,8 @@ void hif_pm_runtime_get_noresume(struct hif_opaque_softc *hif_ctx,
  * hif_pm_runtime_get() - do a get opperation on the device
  * @hif_ctx: pointer of HIF context
  * @rtpm_dbgid: dbgid to trace who use it
+ * @is_critical_ctx: Indication if this function called via a
+ *		     critical context
  *
  * A get opperation will prevent a runtime suspend until a
  * corresponding put is done.  This api should be used when sending
@@ -1162,7 +1164,8 @@ void hif_pm_runtime_get_noresume(struct hif_opaque_softc *hif_ctx,
  *   otherwise an error code.
  */
 int hif_pm_runtime_get(struct hif_opaque_softc *hif_ctx,
-		       wlan_rtpm_dbgid rtpm_dbgid)
+		       wlan_rtpm_dbgid rtpm_dbgid,
+		       bool is_critical_ctx)
 {
 	struct hif_softc *scn = HIF_GET_SOFTC(hif_ctx);
 	struct hif_runtime_pm_ctx *rpm_ctx;
@@ -1207,8 +1210,11 @@ int hif_pm_runtime_get(struct hif_opaque_softc *hif_ctx,
 
 	if (pm_state == HIF_PM_RUNTIME_STATE_SUSPENDED ||
 	    pm_state == HIF_PM_RUNTIME_STATE_SUSPENDING) {
+		/* Do not log in performance path */
+		if (!is_critical_ctx) {
 			hif_info_high("Runtime PM resume is requested by %ps",
 				      (void *)_RET_IP_);
+		}
 		ret = -EAGAIN;
 	} else {
 		ret = -EBUSY;

htc/htc.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2021 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -1174,7 +1174,7 @@ int htc_pm_runtime_get(HTC_HANDLE htc_handle)
 	HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle);
 
 	return hif_pm_runtime_get(target->hif_dev,
-				  RTPM_ID_HTC);
+				  RTPM_ID_HTC, false);
 }
 
 int htc_pm_runtime_put(HTC_HANDLE htc_handle)

htc/htc_send.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2021 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -1103,7 +1103,7 @@ static void get_htc_send_packets_credit_based(HTC_TARGET *target,
 				htc_send_pkts_rtpm_dbgid_get(
 					pEndpoint->service_id);
 			ret = hif_pm_runtime_get(target->hif_dev,
-						 rtpm_dbgid);
+						 rtpm_dbgid, false);
 			if (ret) {
 				/* bus suspended, runtime resume issued */
 				QDF_ASSERT(HTC_PACKET_QUEUE_DEPTH(pQueue) == 0);
@@ -1252,7 +1252,7 @@ static void get_htc_send_packets(HTC_TARGET *target,
 				htc_send_pkts_rtpm_dbgid_get(
 					pEndpoint->service_id);
 			ret = hif_pm_runtime_get(target->hif_dev,
-						 rtpm_dbgid);
+						 rtpm_dbgid, false);
 			if (ret) {
 				/* bus suspended, runtime resume issued */
 				QDF_ASSERT(HTC_PACKET_QUEUE_DEPTH(pQueue) == 0);
@@ -1932,7 +1932,7 @@ QDF_STATUS htc_send_data_pkt(HTC_HANDLE htc_hdl, qdf_nbuf_t netbuf, int ep_id,
 
 	rtpm_dbgid =
 		htc_send_pkts_rtpm_dbgid_get(pEndpoint->service_id);
-	if (hif_pm_runtime_get(target->hif_dev, rtpm_dbgid))
+	if (hif_pm_runtime_get(target->hif_dev, rtpm_dbgid, false))
 		return QDF_STATUS_E_FAILURE;
 
 	p_htc_hdr = (HTC_FRAME_HDR *)qdf_nbuf_get_frag_vaddr(netbuf, 0);

qdf/linux/src/qdf_lock.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2021 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -499,7 +499,7 @@ QDF_STATUS qdf_runtime_pm_get(void)
 		return QDF_STATUS_E_INVAL;
 	}
 
-	ret = hif_pm_runtime_get(ol_sc, RTPM_ID_RESVERD);
+	ret = hif_pm_runtime_get(ol_sc, RTPM_ID_RESVERD, false);
 
 	if (ret)
 		return QDF_STATUS_E_FAILURE;