Re: [PATCH v7 2/2] cxl/pci: Add trace logging for CXL PCIe Port RAS errors

[Alison Schofield]

On Wed, Feb 26, 2025 at 10:11:57PM +0000, Smita Koralahalli wrote:

Kind of a nit, but since these are exposed to user space suggest 
matching these names now.

> +++ b/drivers/cxl/core/trace.h
> @@ -48,6 +48,34 @@
>  	{ CXL_RAS_UC_IDE_RX_ERR, "IDE Rx Error" }			  \
>  )
>  
> +TRACE_EVENT(cxl_port_aer_uncorrectable_error,
> +	TP_PROTO(struct device *dev, u32 status, u32 fe, u32 *hl),
> +	TP_ARGS(dev, status, fe, hl),
> +	TP_STRUCT__entry(
> +		__string(devname, dev_name(dev))
> +		__string(parent, dev_name(dev->parent))

Above devname, parent 

> +		__field(u32, status)
> +		__field(u32, first_error)
> +		__array(u32, header_log, CXL_HEADERLOG_SIZE_U32)
> +	),
> +	TP_fast_assign(
> +		__assign_str(devname);
> +		__assign_str(parent);
> +		__entry->status = status;
> +		__entry->first_error = fe;
> +		/*
> +		 * Embed the 512B headerlog data for user app retrieval and
> +		 * parsing, but no need to print this in the trace buffer.
> +		 */
> +		memcpy(__entry->header_log, hl, CXL_HEADERLOG_SIZE);
> +	),
> +	TP_printk("device=%s host=%s status: '%s' first_error: '%s'",

Above device, host

> +		  __get_str(devname), __get_str(parent),
> +		  show_uc_errs(__entry->status),
> +		  show_uc_errs(__entry->first_error)
> +	)
> +);
> +
>  TRACE_EVENT(cxl_aer_uncorrectable_error,
>  	TP_PROTO(const struct cxl_memdev *cxlmd, u32 status, u32 fe, u32 *hl),
>  	TP_ARGS(cxlmd, status, fe, hl),
> @@ -96,6 +124,25 @@ TRACE_EVENT(cxl_aer_uncorrectable_error,
>  	{ CXL_RAS_CE_PHYS_LAYER_ERR, "Received Error From Physical Layer" }	\
>  )
>  

same thing below -


> +TRACE_EVENT(cxl_port_aer_correctable_error,
> +	TP_PROTO(struct device *dev, u32 status),
> +	TP_ARGS(dev, status),
> +	TP_STRUCT__entry(
> +		__string(devname, dev_name(dev))
> +		__string(parent, dev_name(dev->parent))
> +		__field(u32, status)
> +	),
> +	TP_fast_assign(
> +		__assign_str(devname);
> +		__assign_str(parent);
> +		__entry->status = status;
> +	),
> +	TP_printk("device=%s host=%s status='%s'",
> +		  __get_str(devname), __get_str(parent),
> +		  show_ce_errs(__entry->status)
> +	)
> +);
> +
>  TRACE_EVENT(cxl_aer_correctable_error,
>  	TP_PROTO(const struct cxl_memdev *cxlmd, u32 status),
>  	TP_ARGS(cxlmd, status),
> -- 
> 2.17.1
>