[PATCH v3 05/10] ACPI: APEI: GHES: move vendor record helpers

Ahmed Tiba
2026-03-18T20:49:21Z

Shift the vendor record workqueue helpers into ghes_cper.c so both GHES
and future DT-based providers can use the same implementation. The change
is mechanical and keeps the notifier behavior identical.

Signed-off-by: Ahmed Tiba <ahmed.tiba@arm.com>
---
drivers/acpi/apei/ghes.c | 50 ---------------------------------------
drivers/acpi/apei/ghes_cper.c | 55 +++++++++++++++++++++++++++++++++++++++++++
include/acpi/ghes_cper.h | 2 ++
3 files changed, 57 insertions(+), 50 deletions(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 8a9b4dda3748..9703c602a8c2 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -383,56 +383,6 @@ static void ghes_handle_aer(struct acpi_hest_generic_data *gdata)
#endif
}

-static BLOCKING_NOTIFIER_HEAD(vendor_record_notify_list);
-
-int ghes_register_vendor_record_notifier(struct notifier_block *nb)
-{
- return blocking_notifier_chain_register(&vendor_record_notify_list, nb);
-}
-EXPORT_SYMBOL_GPL(ghes_register_vendor_record_notifier);
-
-void ghes_unregister_vendor_record_notifier(struct notifier_block *nb)
-{
- blocking_notifier_chain_unregister(&vendor_record_notify_list, nb);
-}
-EXPORT_SYMBOL_GPL(ghes_unregister_vendor_record_notifier);
-
-static void ghes_vendor_record_work_func(struct work_struct *work)
-{
- struct ghes_vendor_record_entry *entry;
- struct acpi_hest_generic_data *gdata;
- u32 len;
-
- entry = container_of(work, struct ghes_vendor_record_entry, work);
- gdata = GHES_GDATA_FROM_VENDOR_ENTRY(entry);
-
- blocking_notifier_call_chain(&vendor_record_notify_list,
- entry->error_severity, gdata);
-
- len = GHES_VENDOR_ENTRY_LEN(acpi_hest_get_record_size(gdata));
- gen_pool_free(ghes_estatus_pool, (unsigned long)entry, len);
-}
-
-static void ghes_defer_non_standard_event(struct acpi_hest_generic_data *gdata,
- int sev)
-{
- struct acpi_hest_generic_data *copied_gdata;
- struct ghes_vendor_record_entry *entry;
- u32 len;
-
- len = GHES_VENDOR_ENTRY_LEN(acpi_hest_get_record_size(gdata));
- entry = (void *)gen_pool_alloc(ghes_estatus_pool, len);
- if (!entry)
- return;
-
- copied_gdata = GHES_GDATA_FROM_VENDOR_ENTRY(entry);
- memcpy(copied_gdata, gdata, acpi_hest_get_record_size(gdata));
- entry->error_severity = sev;
-
- INIT_WORK(&entry->work, ghes_vendor_record_work_func);
- schedule_work(&entry->work);
-}
-
/* Room for 8 entries */
#define CXL_CPER_PROT_ERR_FIFO_DEPTH 8
static DEFINE_KFIFO(cxl_cper_prot_err_fifo, struct cxl_cper_prot_err_work_data,
diff --git a/drivers/acpi/apei/ghes_cper.c b/drivers/acpi/apei/ghes_cper.c
index 0a117f478afb..131980d36064 100644
--- a/drivers/acpi/apei/ghes_cper.c
+++ b/drivers/acpi/apei/ghes_cper.c
@@ -14,12 +14,17 @@

#include <linux/err.h>
#include <linux/genalloc.h>
+#include <linux/irq_work.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/list.h>
#include <linux/math64.h>
#include <linux/mm.h>
+#include <linux/notifier.h>
+#include <linux/llist.h>
#include <linux/ratelimit.h>
#include <linux/rcupdate.h>
+#include <linux/rculist.h>
#include <linux/sched/clock.h>
#include <linux/slab.h>

@@ -266,6 +271,56 @@ void ghes_clear_estatus(struct ghes *ghes,
ghes_ack_error(ghes->generic_v2);
}

+static BLOCKING_NOTIFIER_HEAD(vendor_record_notify_list);
+
+int ghes_register_vendor_record_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&vendor_record_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(ghes_register_vendor_record_notifier);
+
+void ghes_unregister_vendor_record_notifier(struct notifier_block *nb)
+{
+ blocking_notifier_chain_unregister(&vendor_record_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(ghes_unregister_vendor_record_notifier);
+
+static void ghes_vendor_record_work_func(struct work_struct *work)
+{
+ struct ghes_vendor_record_entry *entry;
+ struct acpi_hest_generic_data *gdata;
+ u32 len;
+
+ entry = container_of(work, struct ghes_vendor_record_entry, work);
+ gdata = GHES_GDATA_FROM_VENDOR_ENTRY(entry);
+
+ blocking_notifier_call_chain(&vendor_record_notify_list,
+ entry->error_severity, gdata);
+
+ len = GHES_VENDOR_ENTRY_LEN(acpi_hest_get_record_size(gdata));
+ gen_pool_free(ghes_estatus_pool, (unsigned long)entry, len);
+}
+
+void ghes_defer_non_standard_event(struct acpi_hest_generic_data *gdata,
+ int sev)
+{
+ struct acpi_hest_generic_data *copied_gdata;
+ struct ghes_vendor_record_entry *entry;
+ u32 len;
+
+ len = GHES_VENDOR_ENTRY_LEN(acpi_hest_get_record_size(gdata));
+ entry = (void *)gen_pool_alloc(ghes_estatus_pool, len);
+ if (!entry)
+ return;
+
+ copied_gdata = GHES_GDATA_FROM_VENDOR_ENTRY(entry);
+ memcpy(copied_gdata, gdata, acpi_hest_get_record_size(gdata));
+ entry->error_severity = sev;
+
+ INIT_WORK(&entry->work, ghes_vendor_record_work_func);
+ schedule_work(&entry->work);
+}
+
/*
* GHES error status reporting throttle, to report more kinds of
* errors, instead of just most frequently occurred errors.
diff --git a/include/acpi/ghes_cper.h b/include/acpi/ghes_cper.h
index 627fb1a5a121..6a37c03397fc 100644
--- a/include/acpi/ghes_cper.h
+++ b/include/acpi/ghes_cper.h
@@ -105,5 +105,7 @@ int __ghes_read_estatus(struct acpi_hest_generic_status *estatus,
int ghes_estatus_cached(struct acpi_hest_generic_status *estatus);
void ghes_estatus_cache_add(struct acpi_hest_generic *generic,
struct acpi_hest_generic_status *estatus);
+void ghes_defer_non_standard_event(struct acpi_hest_generic_data *gdata,
+ int sev);

#endif /* ACPI_APEI_GHES_CPER_H */

--
2.43.0