qcacld-3.0: Bind ol_rx_thread to perf CPU

When RX_PERFORMANCE is set, bind ol_rx_thread to perf CPU.
Do not update tdls stats and acquire rx_wakelock while
throughput is high, to avoid station drop packets caused
by slow process of ol_rx_data_cb(hdd_rx_packet_cbk).

Change-Id: I4e2a8d7f98907c205cc6988d8af309e7a5515b89
CRs-Fixed: 2373936

Kbuild

@@ -2073,7 +2073,7 @@ cppflags-$(CONFIG_FEATURE_WLAN_RMC) += -DFEATURE_WLAN_RMC
 cppflags-$(CONFIG_FEATURE_BECN_STATS) += -DWLAN_FEATURE_BEACON_RECEPTION_STATS
 
 #Set kernel thread scheduler
-cppflags-$(CONFIG_THREAD_PERFORMANCE) += -DTHREAD_PERFORMANCE
+cppflags-$(CONFIG_RX_PERFORMANCE) += -DRX_PERFORMANCE
 
 #Enable OL debug and wmi unified functions
 cppflags-$(CONFIG_ATH_PERF_PWR_OFFLOAD) += -DATH_PERF_PWR_OFFLOAD

configs/default_defconfig

@@ -88,7 +88,7 @@ endif
 ifeq ($(CONFIG_ARCH_QCS405), y)
 	CONFIG_WLAN_SYNC_TSF_PLUS := y
 	CONFIG_WLAN_SYNC_TSF_PLUS_NOIRQ := y
-	CONFIG_THREAD_PERFORMANCE := y
+	CONFIG_RX_PERFORMANCE := y
 endif
 
 #Flag to enable Legacy Fast Roaming2(LFR2)

core/cds/src/cds_sched.c

@@ -35,7 +35,7 @@
 #include <linux/spinlock.h>
 #include <linux/kthread.h>
 #include <linux/cpu.h>
-#ifdef THREAD_PERFORMANCE
+#ifdef RX_PERFORMANCE
 #include <linux/sched/types.h>
 #endif
 
@@ -410,7 +410,7 @@ QDF_STATUS cds_sched_open(void *p_cds_context,
 		p_cds_sched_context pSchedContext,
 		uint32_t SchedCtxSize)
 {
-#ifdef THREAD_PERFORMANCE
+#ifdef RX_PERFORMANCE
 	struct sched_param param;
 
 	param.sched_priority = 99;
@@ -462,7 +462,7 @@ QDF_STATUS cds_sched_open(void *p_cds_context,
 		goto OL_RX_THREAD_START_FAILURE;
 
 	}
-#ifdef THREAD_PERFORMANCE
+#ifdef RX_PERFORMANCE
 	sched_setscheduler(pSchedContext->ol_rx_thread, SCHED_RR, &param);
 #endif
 	wake_up_process(pSchedContext->ol_rx_thread);
@@ -733,6 +733,10 @@ static int cds_ol_rx_thread(void *arg)
 	p_cds_sched_context pSchedContext = (p_cds_sched_context) arg;
 	bool shutdown = false;
 	int status;
+#ifdef RX_PERFORMANCE
+	int i;
+	unsigned long pref_cpu = 0;
+#endif
 
 #ifdef RX_THREAD_PRIORITY
 	struct sched_param scheduler_params = {0};
@@ -747,6 +751,21 @@ static int cds_ol_rx_thread(void *arg)
 	set_wake_up_idle(true);
 #endif
 
+#ifdef RX_PERFORMANCE
+	/*
+	 * Find the available cpu core other than cpu 0 and
+	 * bind the thread
+	 */
+	for_each_online_cpu(i) {
+		if (i == 0)
+			continue;
+		pref_cpu = i;
+		break;
+	}
+	if (pref_cpu != 0 && (!cds_set_cpus_allowed_ptr(current, pref_cpu)))
+		affine_cpu = pref_cpu;
+#endif
+
 	complete(&pSchedContext->ol_rx_start_event);
 
 	while (!shutdown) {

core/hdd/inc/hdd_dp_cfg.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2019 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

core/hdd/src/wlan_hdd_tx_rx.c

@@ -2083,8 +2083,9 @@ QDF_STATUS hdd_rx_packet_cbk(void *adapter_context,
 		dest_mac_addr = (struct qdf_mac_addr *)(skb->data);
 		mac_addr = (struct qdf_mac_addr *)(skb->data+QDF_MAC_ADDR_SIZE);
 
-		ucfg_tdls_update_rx_pkt_cnt(adapter->vdev, mac_addr,
-				dest_mac_addr);
+		if (hdd_ctx->cur_vote_level < PLD_BUS_WIDTH_HIGH)
+			ucfg_tdls_update_rx_pkt_cnt(adapter->vdev, mac_addr,
+						    dest_mac_addr);
 
 		skb->dev = adapter->dev;
 		skb->protocol = eth_type_trans(skb, skb->dev);
@@ -2106,8 +2107,9 @@ QDF_STATUS hdd_rx_packet_cbk(void *adapter_context,
 		}
 
 		/* hold configurable wakelock for unicast traffic */
-		if (hdd_ctx->config->rx_wakelock_timeout &&
-				sta_ctx->conn_info.uIsAuthenticated)
+		if (hdd_ctx->cur_vote_level < PLD_BUS_WIDTH_HIGH &&
+		    hdd_ctx->config->rx_wakelock_timeout &&
+		    sta_ctx->conn_info.uIsAuthenticated)
 			wake_lock = hdd_is_rx_wake_lock_needed(skb);
 
 		if (wake_lock) {