Commit e9279e83 authored by Tyler Baicar's avatar Tyler Baicar Committed by Will Deacon
Browse files

trace, ras: add ARM processor error trace event 



Currently there are trace events for the various RAS
errors with the exception of ARM processor type errors.
Add a new trace event for such errors so that the user
will know when they occur. These trace events are
consistent with the ARM processor error section type
defined in UEFI 2.6 spec section N.2.4.4.

Signed-off-by: default avatarTyler Baicar <tbaicar@codeaurora.org>
Acked-by: default avatarSteven Rostedt <rostedt@goodmis.org>
Reviewed-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 297b64c7

drivers/acpi/apei/ghes.c

+5 −1
Original line number Diff line number Diff line
@@ -517,7 +517,11 @@ static void ghes_do_proc(struct ghes *ghes, 


		}

#endif

		else {

		else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {

			struct cper_sec_proc_arm *err = acpi_hest_get_payload(gdata);



			log_arm_hw_error(err);

		} else {

			void *err = acpi_hest_get_payload(gdata);



			log_non_standard_event(sec_type, fru_id, fru_text,

drivers/firmware/efi/cper.c

+1 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ 
#include <linux/printk.h>

#include <linux/bcd.h>

#include <acpi/ghes.h>

#include <ras/ras_event.h>



#define INDENT_SP	" "

drivers/ras/ras.c

+6 −0
Original line number Diff line number Diff line
@@ -20,6 +20,11 @@ void log_non_standard_event(const uuid_le *sec_type, const uuid_le *fru_id, 
	trace_non_standard_event(sec_type, fru_id, fru_text, sev, err, len);

}



void log_arm_hw_error(struct cper_sec_proc_arm *err)

{

	trace_arm_event(err);

}



static int __init ras_init(void)

{

	int rc = 0;
@@ -36,6 +41,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event); 
#endif

EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);

EXPORT_TRACEPOINT_SYMBOL_GPL(non_standard_event);

EXPORT_TRACEPOINT_SYMBOL_GPL(arm_event);



int __init parse_ras_param(char *str)

{

include/linux/ras.h

+3 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 


#include <asm/errno.h>

#include <linux/uuid.h>

#include <linux/cper.h>



#ifdef CONFIG_DEBUG_FS

int ras_userspace_consumers(void);
@@ -27,11 +28,13 @@ static inline int cec_add_elem(u64 pfn) { return -ENODEV; } 
void log_non_standard_event(const guid_t *sec_type,

			    const guid_t *fru_id, const char *fru_text,

			    const u8 sev, const u8 *err, const u32 len);

void log_arm_hw_error(struct cper_sec_proc_arm *err);

#else

static void log_non_standard_event(const guid_t *sec_type,

				   const guid_t *fru_id, const char *fru_text,

				   const u8 sev, const u8 *err,

				   const u32 len) { return; }

static void log_arm_hw_error(struct cper_sec_proc_arm *err) { return; }

#endif



#endif /* __RAS_H__ */

include/ras/ras_event.h

+45 −0
Original line number Diff line number Diff line
@@ -161,6 +161,51 @@ TRACE_EVENT(mc_event, 
		  __get_str(driver_detail))

);



/*

 * ARM Processor Events Report

 *

 * This event is generated when hardware detects an ARM processor error

 * has occurred. UEFI 2.6 spec section N.2.4.4.

 */

TRACE_EVENT(arm_event,



	TP_PROTO(const struct cper_sec_proc_arm *proc),



	TP_ARGS(proc),



	TP_STRUCT__entry(

		__field(u64, mpidr)

		__field(u64, midr)

		__field(u32, running_state)

		__field(u32, psci_state)

		__field(u8, affinity)

	),



	TP_fast_assign(

		if (proc->validation_bits & CPER_ARM_VALID_AFFINITY_LEVEL)

			__entry->affinity = proc->affinity_level;

		else

			__entry->affinity = ~0;

		if (proc->validation_bits & CPER_ARM_VALID_MPIDR)

			__entry->mpidr = proc->mpidr;

		else

			__entry->mpidr = 0ULL;

		__entry->midr = proc->midr;

		if (proc->validation_bits & CPER_ARM_VALID_RUNNING_STATE) {

			__entry->running_state = proc->running_state;

			__entry->psci_state = proc->psci_state;

		} else {

			__entry->running_state = ~0;

			__entry->psci_state = ~0;

		}

	),



	TP_printk("affinity level: %d; MPIDR: %016llx; MIDR: %016llx; "

		  "running state: %d; PSCI state: %d",

		  __entry->affinity, __entry->mpidr, __entry->midr,

		  __entry->running_state, __entry->psci_state)

);



/*

 * Non-Standard Section Report

 *

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