qcacmn: Dump WMI work queue stack for watchdog bite
In the event of an WMI work queue watchdog bite, dump the stack
trace to aid in debugging.
Change-Id: I7f3df5a56904748fb80afb1aef1aed90d20fbbc0
CRs-Fixed: 2145913
diff --git a/wmi_unified.c b/wmi_unified.c
index 18f97d8..bc0580c 100644
--- a/wmi_unified.c
+++ b/wmi_unified.c
@@ -1883,7 +1883,11 @@
#ifdef CONFIG_SLUB_DEBUG_ON
static void wmi_workqueue_watchdog_bite(void *arg)
{
- wmi_workqueue_watchdog_warn(*(uint16_t *)arg);
+ struct wmi_wq_dbg_info *info = arg;
+
+ wmi_workqueue_watchdog_warn(info->wd_msg_type_id);
+ qdf_print_thread_trace(info->task);
+
QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR,
"%s: Going down for WMI WQ Watchdog Bite!", __func__);
QDF_BUG(0);
@@ -1891,7 +1895,9 @@
#else
static inline void wmi_workqueue_watchdog_bite(void *arg)
{
- wmi_workqueue_watchdog_warn(*(uint16_t *)arg);
+ struct wmi_wq_dbg_info *info = arg;
+
+ wmi_workqueue_watchdog_warn(info->wd_msg_type_id);
}
#endif
@@ -1908,18 +1914,20 @@
wmi_buf_t buf;
struct wmi_unified *wmi = arg;
qdf_timer_t wd_timer;
- uint16_t wd_msg_type_id;
+ struct wmi_wq_dbg_info info;
/* initialize WMI workqueue watchdog timer */
qdf_timer_init(NULL, &wd_timer, &wmi_workqueue_watchdog_bite,
- &wd_msg_type_id, QDF_TIMER_TYPE_SW);
+ &info, QDF_TIMER_TYPE_SW);
qdf_spin_lock_bh(&wmi->eventq_lock);
buf = qdf_nbuf_queue_remove(&wmi->event_queue);
qdf_spin_unlock_bh(&wmi->eventq_lock);
while (buf) {
qdf_timer_start(&wd_timer, WMI_WQ_WD_TIMEOUT);
- wd_msg_type_id =
+ info.wd_msg_type_id =
WMI_GET_FIELD(qdf_nbuf_data(buf), WMI_CMD_HDR, COMMANDID);
+ info.wmi_wq = wmi->wmi_rx_work_queue;
+ info.task = qdf_get_current_task();
__wmi_control_rx(wmi, buf);
qdf_timer_stop(&wd_timer);
qdf_spin_lock_bh(&wmi->eventq_lock);