nvme: trace all async notice events

This patch removes the tracing of the NVMe Async events out of the
switch so that it can trace all the events including the ones which
are not handled in the nvme_handle_aen_notice(). The events which
are not handled in the nvme_handle_aen_notice() such as
NVME_AER_NOTICE_DISC_CHANGED corresponding event identifier needs
to be added in the drivers/nvme/host/trace.h so that it can stringify
the AER .

Signed-off-by: Chaitanya Kulkarni <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>

Author: ChaitanayaKulkarni

drivers/nvme/host/core.c

@@ -3604,19 +3604,18 @@ static void nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
 {
 	u32 aer_notice_type = (result & 0xff00) >> 8;
 
+	trace_nvme_async_event(ctrl, aer_notice_type);
+
 	switch (aer_notice_type) {
 	case NVME_AER_NOTICE_NS_CHANGED:
-		trace_nvme_async_event(ctrl, aer_notice_type);
 		set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);
 		nvme_queue_scan(ctrl);
 		break;
 	case NVME_AER_NOTICE_FW_ACT_STARTING:
-		trace_nvme_async_event(ctrl, aer_notice_type);
 		queue_work(nvme_wq, &ctrl->fw_act_work);
 		break;
 #ifdef CONFIG_NVME_MULTIPATH
 	case NVME_AER_NOTICE_ANA:
-		trace_nvme_async_event(ctrl, aer_notice_type);
 		if (!ctrl->ana_log_buf)
 			break;
 		queue_work(nvme_wq, &ctrl->ana_work);

drivers/nvme/host/trace.h

@@ -167,6 +167,7 @@ TRACE_EVENT(nvme_async_event,
 		aer_name(NVME_AER_NOTICE_NS_CHANGED),
 		aer_name(NVME_AER_NOTICE_ANA),
 		aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
+		aer_name(NVME_AER_NOTICE_DISC_CHANGED),
 		aer_name(NVME_AER_ERROR),
 		aer_name(NVME_AER_SMART),
 		aer_name(NVME_AER_CSS),