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Subject[PATCH 11/11] cxl/test: Simulate event log overflow
Date
From: Ira Weiny <ira.weiny@intel.com>

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@intel.com>

---
Changes from RFC
Adjust for new struct changes
---
tools/testing/cxl/test/events.c | 37 +++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)

diff --git a/tools/testing/cxl/test/events.c b/tools/testing/cxl/test/events.c
index 8693f3fb9cbb..5ce257114f4e 100644
--- a/tools/testing/cxl/test/events.c
+++ b/tools/testing/cxl/test/events.c
@@ -69,11 +69,21 @@ 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))
@@ -95,6 +105,20 @@ 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[0], get_cur_event(log), sizeof(pl->record[0]));
pl->record[0].hdr.handle = get_cur_event_handle(log);
return 0;
@@ -274,6 +298,19 @@ u32 cxl_mock_add_event_logs(struct cxl_dev_state *cxlds)
(struct cxl_event_record_raw *)&mem_module);
mes->ev_status |= CXLDEV_EVENT_STATUS_INFO;

+ 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);
+ mes->ev_status |= CXLDEV_EVENT_STATUS_FAIL;
+
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
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