Wlan: Time limit the fatal events from firmware having same reason
Sometime firmware send continuous fatal events with same reason
and thus flood of fatal event is seen.
As the first event is sufficient to flush the logs, time limit
the fatal events having the same reason.
Change-Id: Iad5373a2dbc1cc75fb53292ef393c26795a093fa
CRs-Fixed: 972656
diff --git a/CORE/SVC/src/logging/wlan_logging_sock_svc.c b/CORE/SVC/src/logging/wlan_logging_sock_svc.c
index dbe9af0..cbe9134 100644
--- a/CORE/SVC/src/logging/wlan_logging_sock_svc.c
+++ b/CORE/SVC/src/logging/wlan_logging_sock_svc.c
@@ -1,5 +1,5 @@
/*
-* Copyright (c) 2014-2015 The Linux Foundation. All rights reserved.
+* Copyright (c) 2014-2016 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
@@ -77,6 +77,9 @@
#define PTT_MSG_DIAG_CMDS_TYPE 0x5050
#define DIAG_TYPE_LOGS 1
+/* Limit FW initiated fatal event to ms */
+#define LIMIT_FW_FATAL_EVENT_MS 10000
+
/* Qtimer Frequency */
#define QTIMER_FREQ 19200000
@@ -104,6 +107,8 @@
uint32_t reason_code;
bool is_report_in_progress;
bool is_flush_complete;
+ uint32_t last_fw_bug_reason;
+ unsigned long last_fw_bug_timestamp;
};
struct fw_mem_dump_logging{
@@ -1325,6 +1330,8 @@
gwlan_logging.log_complete.is_fatal = WLAN_LOG_TYPE_NON_FATAL;
gwlan_logging.log_complete.is_report_in_progress = false;
gwlan_logging.log_complete.reason_code = WLAN_LOG_REASON_CODE_UNUSED;
+ gwlan_logging.log_complete.last_fw_bug_reason = 0;
+ gwlan_logging.log_complete.last_fw_bug_timestamp = 0;
spin_lock_init(&gwlan_logging.bug_report_lock);
}
@@ -1854,6 +1861,29 @@
}
else
{
+ unsigned long flags;
+
+ /* Drop FW initiated fatal event for
+ * LIMIT_FW_FATAL_EVENT_MS if received for same reason.
+ */
+ spin_lock_irqsave(&gwlan_logging.bug_report_lock,
+ flags);
+ if ((reason_code ==
+ gwlan_logging.log_complete.last_fw_bug_reason) &&
+ ((vos_timer_get_system_time() -
+ gwlan_logging.log_complete.last_fw_bug_timestamp)
+ < LIMIT_FW_FATAL_EVENT_MS)) {
+ pr_info("%s: Ignoring Fatal event from firmware for reason %d\n",
+ __func__, reason_code);
+ return;
+ }
+ gwlan_logging.log_complete.last_fw_bug_reason =
+ reason_code;
+ gwlan_logging.log_complete.last_fw_bug_timestamp =
+ vos_timer_get_system_time();
+ spin_unlock_irqrestore(&gwlan_logging.bug_report_lock,
+ flags);
+
/*Firmware Initiated*/
pr_info("%s : FW triggered Fatal Event, reason_code : %d\n", __func__,
reason_code);