[RFC,7/9] ACPI: APEI: ESRT: kick ghes_report_chain notifier to report serialized memory errors

Commit Message

Shuai Xue Sept. 16, 2023, 1:03 p.m. UTC

Introduce a new pstore_record type, PSTORE_TYPE_CPER_MEM, so that
serialized memory errors can be retrieved and saved as a file in pstore
file system. While the serialized errors is retrieved from ERST
backend, kick ghes_report_chain notifier.

Signed-off-by: Shuai Xue <[e-mail]>
---
 drivers/acpi/apei/erst.c | 5 +++++
 fs/pstore/platform.c     | 1 +
 include/linux/pstore.h   | 3 +++
 3 files changed, 9 insertions(+)

Patch

diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index f789e3df73a9..665b8f93dab3 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -26,6 +26,7 @@ 
 #include <linux/vmalloc.h>
 #include <linux/mm.h> /* kvfree() */
 #include <acpi/apei.h>
+#include <acpi/ghes.h>
 /* only define CREATE_TRACE_POINTS once */
 #include <trace/events/mce.h>
 
@@ -1068,6 +1069,10 @@  static ssize_t erst_reader(struct pstore_record *record)
 	else if (guid_equal(&rcd->sec_hdr.section_type, &CPER_SECTION_TYPE_MCE)) {
 		trace_mce_record((struct mce *)rcd->data);
 		record->type = PSTORE_TYPE_MCE;
+	} else if (guid_equal(&rcd->sec_hdr.section_type, &CPER_SEC_PLATFORM_MEM)) {
+		record->type = PSTORE_TYPE_CPER_MEM;
+		arch_apei_report_mem_error(0x2, (struct cper_sec_mem_err *)rcd->data);
+		atomic_notifier_call_chain(&ghes_report_chain, 0x2, rcd->data);
 	}
 	else
 		record->type = PSTORE_TYPE_MAX;
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index e5bca9a004cc..4e63ac8be755 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -51,6 +51,7 @@  static const char * const pstore_type_names[] = {
 	"powerpc-common",
 	"pmsg",
 	"powerpc-opal",
+	"cper-mem",
 };
 
 static int pstore_new_entry;
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index ad44b3baf10e..d18ecaacd1b5 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -40,6 +40,9 @@  enum pstore_type_id {
 	PSTORE_TYPE_PMSG	= 7,
 	PSTORE_TYPE_PPC_OPAL	= 8,
 
+	/* APEI section */
+	PSTORE_TYPE_CPER_MEM		= 9,
+
 	/* End of the list */
 	PSTORE_TYPE_MAX
 };