nvme: fix async event trace event

Mixing AER Event Type and Event Info has masking clashes. Just print the
event type, but also include the event info of the AER result in the
trace.

Fixes: 09bd1ff4b15143b ("nvme-core: add async event trace helper")
Reported-by: Nate Thornton <nate.thornton@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Minwoo Im <minwoo.im@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index c2730b1..0699365 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4808,8 +4808,6 @@ static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
        u32 aer_notice_type = nvme_aer_subtype(result);
        bool requeue = true;
 
-       trace_nvme_async_event(ctrl, aer_notice_type);
-
        switch (aer_notice_type) {
        case NVME_AER_NOTICE_NS_CHANGED:
                set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);
@@ -4845,7 +4843,6 @@ static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
 
 static void nvme_handle_aer_persistent_error(struct nvme_ctrl *ctrl)
 {
-       trace_nvme_async_event(ctrl, NVME_AER_ERROR);
        dev_warn(ctrl->device, "resetting controller due to AER\n");
        nvme_reset_ctrl(ctrl);
 }
@@ -4861,6 +4858,7 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
        if (le16_to_cpu(status) >> 1 != NVME_SC_SUCCESS)
                return;
 
+       trace_nvme_async_event(ctrl, result);
        switch (aer_type) {
        case NVME_AER_NOTICE:
                requeue = nvme_handle_aen_notice(ctrl, result);
@@ -4878,7 +4876,6 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
        case NVME_AER_SMART:
        case NVME_AER_CSS:
        case NVME_AER_VS:
-               trace_nvme_async_event(ctrl, aer_type);
                ctrl->aen_result = result;
                break;
        default:

diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h
index 6f0eaf6..4fb5922 100644 (file)
--- a/drivers/nvme/host/trace.h
+++ b/drivers/nvme/host/trace.h
@@ -127,15 +127,12 @@ TRACE_EVENT(nvme_async_event,
        ),
        TP_printk("nvme%d: NVME_AEN=%#08x [%s]",
                __entry->ctrl_id, __entry->result,
-               __print_symbolic(__entry->result,
-               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),
-               aer_name(NVME_AER_VS))
+               __print_symbolic(__entry->result & 0x7,
+                       aer_name(NVME_AER_ERROR),
+                       aer_name(NVME_AER_SMART),
+                       aer_name(NVME_AER_NOTICE),
+                       aer_name(NVME_AER_CSS),
+                       aer_name(NVME_AER_VS))
        )
 );