Re: [PATCH V3 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section

[Punit Agrawal <punit.agrawal@arm.com>]

Hi Tyler,

One last comment...

Tyler Baicar <tbaicar@codeaurora.org> writes:

> UEFI spec allows for non-standard section in Common Platform Error
> Record. This is defined in section N.2.3 of UEFI version 2.5.
>
> Currently if the CPER section's type (UUID) does not match with
> any section type that the kernel knows how to parse, trace event
> is not generated for such section. And thus user is not able to know
> happening of such hardware error, including error record of
> non-standard section.
>
> This commit generates a trace event which contains raw error data
> for unrecognized CPER section.
>
> Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
> Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
> ---
>  drivers/acpi/apei/ghes.c | 18 +++++++++++++++++-
>  drivers/ras/ras.c        |  1 +
>  include/ras/ras_event.h  | 45 +++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 63 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 36894c8..cb4c7f4 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -49,6 +49,7 @@
>  #include <acpi/ghes.h>
>  #include <acpi/apei.h>
>  #include <asm/tlbflush.h>
> +#include <ras/ras_event.h>
>  
>  #ifdef CONFIG_HAVE_ACPI_APEI_SEA
>  #include <asm/system_misc.h>
> @@ -468,12 +469,21 @@ static void ghes_do_proc(struct ghes *ghes,
>  	int sev, sec_sev;
>  	struct acpi_hest_generic_data *gdata;
>  	uuid_le sec_type;
> +	uuid_le *fru_id;
> +	char *fru_text = "";
>  
>  	sev = ghes_severity(estatus->error_severity);
>  	apei_estatus_for_each_section(estatus, gdata) {
>  		sec_sev = ghes_severity(gdata->error_severity);
>  		sec_type = *(uuid_le *)gdata->section_type;
>  
> +		if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
> +			fru_id = (uuid_le *)gdata->fru_id;
> +		else
> +			fru_id = &NULL_UUID_LE;

fru_id can be initialised at declaration and drop the else here. The
same is already being done for fru_text.

Thanks,
Punit

> +		if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
> +			fru_text = gdata->fru_text;
> +
>  		if (!uuid_le_cmp(sec_type,
>  				 CPER_SEC_PLATFORM_MEM)) {
>  			struct cper_sec_mem_err *mem_err;

[...]