linux-kernel - Re: [PATCH v2 2/2] cxl/mbox: Add handle to event processing debug

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Date:   Tue, 1 Aug 2023 13:41:18 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Ira Weiny <ira.weiny@...el.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        Jonathan Cameron <jonathan.cameron@...wei.com>,
        Alison Schofield <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        "Dan Williams" <dan.j.williams@...el.com>
CC:     <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] cxl/mbox: Add handle to event processing debug



On 8/1/23 13:13, Ira Weiny wrote:
> Knowing which handle is being processed helped in debugging new event
> code.  Add a dev_dbg() message with this information.
> 
> Signed-off-by: Ira Weiny <ira.weiny@...el.com>

Reviewed-by: Dave Jiang <dave.jiang@...el.com>
> ---
>   drivers/cxl/core/mbox.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index a1c490f66bbf..f052d5f174ee 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -947,9 +947,13 @@ static void cxl_mem_get_records_log(struct cxl_memdev_state *mds,
>   		if (!nr_rec)
>   			break;
>   
> -		for (i = 0; i < nr_rec; i++)
> +		for (i = 0; i < nr_rec; i++) {
> +			dev_dbg(dev, "Event log %d: processing handle %u\n",
> +				type,
> +				le16_to_cpu(payload->records[i].hdr.handle));
>   			cxl_event_trace_record(cxlmd, type,
>   					       &payload->records[i]);
> +		}
>   
>   		if (payload->flags & CXL_GET_EVENT_FLAG_OVERFLOW)
>   			trace_cxl_overflow(cxlmd, type, payload);
>