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EDAC, ghes: Use CPER module handles to locate DIMMs

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Use SMBIOS module handle type 17, on platforms which provide valid
ones, to locate the corresponding DIMM and thus have per-DIMM error
counter updates.

Signed-off-by: Fan Wu <[email protected]>
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <[email protected]>
Reviewed-by: Tyler Baicar <[email protected]>
Reviewed-by: James Morse <[email protected]>
Tested-by: Toshi Kani <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: linux-edac <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
This commit is contained in:
Fan Wu 2018-09-19 01:59:00 +00:00 • committed by Borislav Petkov
commit c798c88f39
2 changed files with 25 additions and 0 deletions
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23
drivers/edac/ghes_edac.c
View file

@ -81,6 +81,18 @@ static void ghes_edac_count_dimms(const struct dmi_header *dh, void *arg)
(*num_dimm)++;
}
static int get_dimm_smbios_index(u16 handle)
{
struct mem_ctl_info *mci = ghes_pvt->mci;
int i;
for (i = 0; i < mci->tot_dimms; i++) {
if (mci->dimms[i]->smbios_handle == handle)
return i;
}
return -1;
}
static void ghes_edac_dmidecode(const struct dmi_header *dh, void *arg)
{
struct ghes_edac_dimm_fill *dimm_fill = arg;
@ -177,6 +189,8 @@ static void ghes_edac_dmidecode(const struct dmi_header *dh, void *arg)
entry->total_width, entry->data_width);
}
dimm->smbios_handle = entry->handle;
dimm_fill->count++;
}
}
@ -327,12 +341,21 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
p += sprintf(p, "bit_pos:%d ", mem_err->bit_pos);
if (mem_err->validation_bits & CPER_MEM_VALID_MODULE_HANDLE) {
const char *bank = NULL, *device = NULL;
int index = -1;
dmi_memdev_name(mem_err->mem_dev_handle, &bank, &device);
if (bank != NULL && device != NULL)
p += sprintf(p, "DIMM location:%s %s ", bank, device);
else
p += sprintf(p, "DIMM DMI handle: 0x%.4x ",
mem_err->mem_dev_handle);
index = get_dimm_smbios_index(mem_err->mem_dev_handle);
if (index >= 0) {
e->top_layer = index;
e->enable_per_layer_report = true;
}
}
if (p > e->location)
*(p - 1) = '\0';