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cxl/test: Simulate event log overflow

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Log overflow is marked by a separate trace message.

Simulate a log with lots of messages and flag overflow until space is
cleared.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20221216-cxl-ev-log-v7-8-2316a5c8f7d8@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Ira Weiny
2023-01-17 21:53:43 -08:00
committed by Dan Williams
parent 0092f62acc
commit bab2a5e6fe
1 changed files with 49 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/testing/cxl/test/mem.c
+49 -1
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@@ -78,6 +78,8 @@ struct mock_event_log {
u16 clear_idx;
u16 cur_idx;
u16 nr_events;
u16 nr_overflow;
u16 overflow_reset;
struct cxl_event_record_raw *events[CXL_TEST_EVENT_CNT_MAX];
};
@@ -116,6 +118,7 @@ static void event_reset_log(struct mock_event_log *log)
{
log->cur_idx = 0;
log->clear_idx = 0;
log->nr_overflow = log->overflow_reset;
}
/* Handle can never be 0 use 1 based indexing for handle */
@@ -147,8 +150,12 @@ static void mes_add_event(struct mock_event_store *mes,
return;
log = &mes->mock_logs[log_type];
if (WARN_ON(log->nr_events >= CXL_TEST_EVENT_CNT_MAX))
if ((log->nr_events + 1) > CXL_TEST_EVENT_CNT_MAX) {
log->nr_overflow++;
log->overflow_reset = log->nr_overflow;
return;
}
log->events[log->nr_events] = event;
log->nr_events++;
@@ -159,6 +166,7 @@ static int mock_get_event(struct cxl_dev_state *cxlds,
{
struct cxl_get_event_payload *pl;
struct mock_event_log *log;
u16 nr_overflow;
u8 log_type;
int i;
@@ -191,6 +199,19 @@ static int mock_get_event(struct cxl_dev_state *cxlds,
if (!event_log_empty(log))
pl->flags |= CXL_GET_EVENT_FLAG_MORE_RECORDS;
if (log->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);
}
return 0;
}
@@ -231,6 +252,9 @@ static int mock_clear_event(struct cxl_dev_state *cxlds,
}
}
if (log->nr_overflow)
log->nr_overflow = 0;
/* Clear events */
log->clear_idx += pl->nr_recs;
return 0;
@@ -353,6 +377,30 @@ static void cxl_mock_add_event_logs(struct mock_event_store *mes)
(struct cxl_event_record_raw *)&mem_module);
mes->ev_status |= CXLDEV_EVENT_STATUS_INFO;
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &maint_needed);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL,
(struct cxl_event_record_raw *)&dram);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL,
(struct cxl_event_record_raw *)&gen_media);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL,
(struct cxl_event_record_raw *)&mem_module);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL,
(struct cxl_event_record_raw *)&dram);
/* Overflow this log */
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FAIL, &hardware_replace);
mes->ev_status |= CXLDEV_EVENT_STATUS_FAIL;
mes_add_event(mes, CXL_EVENT_TYPE_FATAL, &hardware_replace);
mes_add_event(mes, CXL_EVENT_TYPE_FATAL,
(struct cxl_event_record_raw *)&dram);