[RFC V2 PATCH 10/11] cxl/test: Simulate event log overflow
From: ira . weiny
Date: Mon Oct 10 2022 - 18:43:54 EST
From: Ira Weiny <ira.weiny@xxxxxxxxx>
Log overflow is marked by a separate trace message.
Simulate a log with lots of messages and flag overflow until it is
drained a bit.
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
---
Changes from RFC
Adjust for new struct changes
---
tools/testing/cxl/test/events.c | 36 +++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/tools/testing/cxl/test/events.c b/tools/testing/cxl/test/events.c
index 1d3dbeaf7794..21cbd2990bca 100644
--- a/tools/testing/cxl/test/events.c
+++ b/tools/testing/cxl/test/events.c
@@ -68,11 +68,21 @@ static void event_store_add_event(struct mock_event_store *mes,
log->nr_events++;
}
+static u16 log_overflow(struct mock_event_log *log)
+{
+ int cnt = log_rec_left(log) - 5;
+
+ if (cnt < 0)
+ return 0;
+ return cnt;
+}
+
int mock_get_event(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
{
struct cxl_get_event_payload *pl;
struct mock_event_log *log;
u8 log_type;
+ u16 nr_overflow;
/* Valid request? */
if (cmd->size_in != sizeof(log_type))
@@ -98,6 +108,20 @@ int mock_get_event(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
if (log_rec_left(log) > 1)
pl->flags |= CXL_GET_EVENT_FLAG_MORE_RECORDS;
+ nr_overflow = log_overflow(log);
+ if (nr_overflow) {
+ u64 ns;
+
+ pl->flags |= CXL_GET_EVENT_FLAG_OVERFLOW;
+ pl->overflow_err_count = cpu_to_le16(nr_overflow);
+ ns = ktime_get_real_ns();
+ ns -= 5000000000; /* 5s ago */
+ pl->first_overflow_timestamp = cpu_to_le64(ns);
+ ns = ktime_get_real_ns();
+ ns -= 1000000000; /* 1s ago */
+ pl->last_overflow_timestamp = cpu_to_le64(ns);
+ }
+
memcpy(&pl->record, get_cur_event(log), sizeof(pl->record));
pl->record.hdr.handle = get_cur_event_handle(log);
return 0;
@@ -276,6 +300,18 @@ void cxl_mock_add_event_logs(struct cxl_dev_state *cxlds)
event_store_add_event(mes, CXL_EVENT_TYPE_INFO,
(struct cxl_event_record_raw *)&mem_module);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL, &maint_needed);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL,
+ (struct cxl_event_record_raw *)&dram);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL,
+ (struct cxl_event_record_raw *)&gen_media);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL,
+ (struct cxl_event_record_raw *)&mem_module);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
+ event_store_add_event(mes, CXL_EVENT_TYPE_FAIL,
+ (struct cxl_event_record_raw *)&dram);
+
event_store_add_event(mes, CXL_EVENT_TYPE_FATAL, &hardware_replace);
event_store_add_event(mes, CXL_EVENT_TYPE_FATAL,
(struct cxl_event_record_raw *)&dram);
--
2.37.2