Messages in this thread Patch in this message | | | From | ira.weiny@intel ... | Date | Mon, 28 Aug 2023 22:21:06 -0700 | Subject | [PATCH RFC v2 15/18] cxl/mem: Trace Dynamic capacity Event Record |
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From: Navneet Singh <navneet.singh@intel.com>
CXL rev 3.0 section 8.2.9.2.1.5 defines the Dynamic Capacity Event Record Determine if the event read is a Dynamic capacity event record and if so trace the record for the debug purpose.
Add DC trace points to the trace log.
Signed-off-by: Navneet Singh <navneet.singh@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com>
--- [iweiny: fixups] --- drivers/cxl/core/mbox.c | 5 ++++ drivers/cxl/core/trace.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 70 insertions(+)
diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index 9d9c13e13ecf..9462c34aa1dc 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -939,6 +939,11 @@ static void cxl_event_trace_record(const struct cxl_memdev *cxlmd, (struct cxl_event_mem_module *)record; trace_cxl_memory_module(cxlmd, type, rec); + } else if (uuid_equal(id, &dc_event_uuid)) { + struct dcd_event_dyn_cap *rec = + (struct dcd_event_dyn_cap *)record; + + trace_cxl_dynamic_capacity(cxlmd, type, rec); } else { /* For unknown record types print just the header */ trace_cxl_generic_event(cxlmd, type, record); diff --git a/drivers/cxl/core/trace.h b/drivers/cxl/core/trace.h index a0b5819bc70b..1899c5cc96b9 100644 --- a/drivers/cxl/core/trace.h +++ b/drivers/cxl/core/trace.h @@ -703,6 +703,71 @@ TRACE_EVENT(cxl_poison, ) ); +/* + * DYNAMIC CAPACITY Event Record - DER + * + * CXL rev 3.0 section 8.2.9.2.1.5 Table 8-47 + */ + +#define CXL_DC_ADD_CAPACITY 0x00 +#define CXL_DC_REL_CAPACITY 0x01 +#define CXL_DC_FORCED_REL_CAPACITY 0x02 +#define CXL_DC_REG_CONF_UPDATED 0x03 +#define show_dc_evt_type(type) __print_symbolic(type, \ + { CXL_DC_ADD_CAPACITY, "Add capacity"}, \ + { CXL_DC_REL_CAPACITY, "Release capacity"}, \ + { CXL_DC_FORCED_REL_CAPACITY, "Forced capacity release"}, \ + { CXL_DC_REG_CONF_UPDATED, "Region Configuration Updated" } \ +) + +TRACE_EVENT(cxl_dynamic_capacity, + + TP_PROTO(const struct cxl_memdev *cxlmd, enum cxl_event_log_type log, + struct dcd_event_dyn_cap *rec), + + TP_ARGS(cxlmd, log, rec), + + TP_STRUCT__entry( + CXL_EVT_TP_entry + + /* Dynamic capacity Event */ + __field(u8, event_type) + __field(u16, hostid) + __field(u8, region_id) + __field(u64, dpa_start) + __field(u64, length) + __array(u8, tag, CXL_DC_EXTENT_TAG_LEN) + __field(u16, sh_extent_seq) + ), + + TP_fast_assign( + CXL_EVT_TP_fast_assign(cxlmd, log, rec->hdr); + + /* Dynamic_capacity Event */ + __entry->event_type = rec->data.event_type; + + /* DCD event record data */ + __entry->hostid = le16_to_cpu(rec->data.host_id); + __entry->region_id = rec->data.region_index; + __entry->dpa_start = le64_to_cpu(rec->data.extent.start_dpa); + __entry->length = le64_to_cpu(rec->data.extent.length); + memcpy(__entry->tag, &rec->data.extent.tag, CXL_DC_EXTENT_TAG_LEN); + __entry->sh_extent_seq = le16_to_cpu(rec->data.extent.shared_extn_seq); + ), + + CXL_EVT_TP_printk("event_type='%s' host_id='%d' region_id='%d' " \ + "starting_dpa=%llx length=%llx tag=%s " \ + "shared_extent_sequence=%d", + show_dc_evt_type(__entry->event_type), + __entry->hostid, + __entry->region_id, + __entry->dpa_start, + __entry->length, + __print_hex(__entry->tag, CXL_DC_EXTENT_TAG_LEN), + __entry->sh_extent_seq + ) +); + #endif /* _CXL_EVENTS_H */ #define TRACE_INCLUDE_FILE trace -- 2.41.0
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