[PATCH v2 06/11] ACPI: APEI: GHES: move vendor record helpers

[Ahmed Tiba]

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 at arm.com>
---
 drivers/acpi/apei/ghes.c      | 50 --------------------------------------
 drivers/acpi/apei/ghes_cper.c | 56 +++++++++++++++++++++++++++++++++++++++++++
 include/acpi/ghes_cper.h      |  2 ++
 3 files changed, 58 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 cb7f6f684087..627f6c712261 100644
--- a/drivers/acpi/apei/ghes_cper.c
+++ b/drivers/acpi/apei/ghes_cper.c
@@ -11,12 +11,17 @@
 
 #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>
 
@@ -263,6 +268,57 @@ 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 1f012a23d0c6..c5ff4c502017 100644
--- a/include/acpi/ghes_cper.h
+++ b/include/acpi/ghes_cper.h
@@ -97,5 +97,7 @@ 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