qcacld-3.0: Print stack trace on DSC timeout

DSC panics in debug builds in the event of various timeout events. In
addition to these panics, print the stack trace of the invoking thread
to assist in finding the exact reason for deadlocks.

Change-Id: I69666cfc52fb7ca3638c32212bae3e3c3ddd8366
CRs-Fixed: 2349387

components/dsc/src/__wlan_dsc.c

@@ -20,6 +20,7 @@
 #include "qdf_mem.h"
 #include "qdf_status.h"
 #include "qdf_str.h"
+#include "qdf_threads.h"
 #include "qdf_timer.h"
 #include "__wlan_dsc.h"
 
@@ -28,6 +29,7 @@ static void __dsc_dbg_op_timeout(void *opaque_op)
 {
 	struct dsc_op *op = opaque_op;
 
+	qdf_print_thread_trace(op->thread);
 	QDF_DEBUG_PANIC("Operation '%s' exceeded %ums",
 			op->func, DSC_OP_TIMEOUT_MS);
 }
@@ -70,6 +72,7 @@ static QDF_STATUS __dsc_dbg_ops_insert(struct dsc_ops *ops, const char *func)
 	if (!op)
 		return QDF_STATUS_E_NOMEM;
 
+	op->thread = qdf_get_current_task();
 	status = qdf_timer_init(NULL, &op->timeout_timer, __dsc_dbg_op_timeout,
 				op, QDF_TIMER_TYPE_SW);
 	if (QDF_IS_STATUS_ERROR(status))
@@ -175,6 +178,7 @@ static void __dsc_dbg_trans_timeout(void *opaque_trans)
 {
 	struct dsc_trans *trans = opaque_trans;
 
+	qdf_print_thread_trace(trans->thread);
 	QDF_DEBUG_PANIC("Transition '%s' exceeded %ums",
 			trans->active_desc, DSC_TRANS_TIMEOUT_MS);
 }
@@ -189,6 +193,7 @@ static QDF_STATUS __dsc_dbg_trans_timeout_start(struct dsc_trans *trans)
 {
 	QDF_STATUS status;
 
+	trans->thread = qdf_get_current_task();
 	status = qdf_timer_init(NULL, &trans->timeout_timer,
 				__dsc_dbg_trans_timeout, trans,
 				QDF_TIMER_TYPE_SW);
@@ -216,6 +221,7 @@ static void __dsc_dbg_tran_wait_timeout(void *opaque_tran)
 {
 	struct dsc_tran *tran = opaque_tran;
 
+	qdf_print_thread_trace(tran->thread);
 	QDF_DEBUG_PANIC("Transition '%s' waited more than %ums",
 			tran->desc, DSC_TRANS_WAIT_TIMEOUT_MS);
 }
@@ -230,6 +236,7 @@ static QDF_STATUS __dsc_dbg_tran_wait_timeout_start(struct dsc_tran *tran)
 {
 	QDF_STATUS status;
 
+	tran->thread = qdf_get_current_task();
 	status = qdf_timer_init(NULL, &tran->timeout_timer,
 				__dsc_dbg_tran_wait_timeout, tran,
 				QDF_TIMER_TYPE_SW);