[PATCH 17/19] EDAC, ghes: Remove intermediate buffer pvt->detail_location

Robert Richter
2019-10-10T20:25:55Z

detail_location[] is used to collect two location strings so they can
be passed as one to trace_mc_event(). Instead of having an extra copy
step, assemble the location string in other_detail[] from the
beginning.

Using other_detail[] to call trace_mc_event() is now the same as in
edac_mc.c and code can be unified.

Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Robert Richter <rrichter@marvell.com>
---
drivers/edac/ghes_edac.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
index 97242cf18a88..8d9d3c4dbebb 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];
};

@@ -356,6 +355,8 @@ 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;

@@ -436,12 +437,10 @@ 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(e->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);

dimm = edac_get_dimm_by_index(mci, e->top_layer);

--
2.20.1