Re: [PATCH v2 03/24] EDAC, ghes: Remove pvt->detail_location string

James Morse
2019-08-02T17:04:50Z

Hi Robert,

On 24/06/2019 16:08, Robert Richter wrote:
> The detail_location[] string in struct ghes_edac_pvt is complete
> useless and data is just copied around. Put everything into
> e->other_detail from the beginning.
>
> Signed-off-by: Robert Richter <rrichter@marvell.com>
> ---

> diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
> index d095d98d6a8d..049de73c3bad 100644
> --- a/drivers/edac/ghes_edac.c
> +++ b/drivers/edac/ghes_edac.c
> @@ -21,8 +21,7 @@ struct ghes_edac_pvt {
> struct mem_ctl_info *mci;
>
> /* Buffers for the error handling routine */
> - char detail_location[240];
> - char other_detail[160];
> + char other_detail[400];
> char msg[80];
> };
>
> @@ -224,13 +223,14 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
> e->error_count = 1;
> e->grain = 1;
> strcpy(e->label, "unknown label");
> - e->msg = pvt->msg;
> - e->other_detail = pvt->other_detail;
> e->top_layer = -1;
> e->mid_layer = -1;
> e->low_layer = -1;
> - *pvt->other_detail = '\0';
> + e->msg = pvt->msg;
> + e->other_detail = pvt->other_detail;
> +
> *pvt->msg = '\0';
> + *pvt->other_detail = '\0';
>
> switch (sev) {
> case GHES_SEV_CORRECTED:
> @@ -361,6 +361,8 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
>
> /* All other fields are mapped on e->other_detail */
> p = pvt->other_detail;
> + p += snprintf(p, sizeof(pvt->other_detail),
> + "APEI location: %s ", e->location);
> if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_STATUS) {
> u64 status = mem_err->error_status;
>
> @@ -443,12 +445,10 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
> grain_bits = fls_long(e->grain - 1);
>
> /* Generate the trace event */
> - snprintf(pvt->detail_location, sizeof(pvt->detail_location),
> - "APEI location: %s %s", e->location, e->other_detail);
> trace_mc_event(type, e->msg, e->label, e->error_count,
> mci->mc_idx, e->top_layer, e->mid_layer, e->low_layer,
> (e->page_frame_number << PAGE_SHIFT) | e->offset_in_page,
> - grain_bits, e->syndrome, pvt->detail_location);
> + grain_bits, e->syndrome, e->other_detail);
>
> edac_raw_mc_handle_error(type, mci, e);
> spin_unlock_irqrestore(&ghes_lock, flags);

After a game of spot-the-difference: you added a newline.
Reviewed-by: James Morse <james.morse@arm.com>

Previously here:
https://lore.kernel.org/linux-edac/7017c91e-8923-c8d2-26ca-875328ab855a@arm.com/

Please pick up tags when posting a new version.

Thanks,

James