[SWDEV-551318] Add doc about RAS / CPER (#636)
* add doc about ras/cper
* add sample code examples for CPER and AFID
---------
Signed-off-by: Park, Peter <Peter.Park@amd.com>
Signed-off-by: Arif, Maisam <Maisam.Arif@amd.com>
Co-authored-by: Oosman Saeed <oossaeed@amd.com>
[ROCm/amdsmi commit: 5e92adc5b3]
Este cometimento está contido em:
Park, Peter
cometido por
GitHub
GitHub
ascendente
e5ba10d4c2
cometimento
0f75c19e4d
@@ -1078,3 +1078,156 @@ GPU: 0
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LEVEL 0: 45 MHz
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...
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```
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### Listing CPER entries using amd-smi
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This example code shows how to list CPER entries for a given GPU into files
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```python
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from amdsmi import *
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import os
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amdsmi_init()
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def get_severity_mask(severity):
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severity_mask = 0
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if severity == "all":
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# Set bits for NON_FATAL_UNCORRECTED (0), FATAL (1), and NON_FATAL_CORRECTED (2)
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severity_mask |= ((1 << 0) | (1 << 1) | (1 << 2))
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elif severity == "fatal":
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# Set bit corresponding to AMDSMI_CPER_SEV_FATAL (which is 1)
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severity_mask |= (1 << 1)
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elif severity in ("nonfatal", "nonfatal-uncorrected"):
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# Set bit corresponding to AMDSMI_CPER_SEV_NON_FATAL_UNCORRECTED (which is 0)
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severity_mask |= (1 << 0)
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elif severity in ("nonfatal-corrected", "corrected"):
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# Set bit corresponding to AMDSMI_CPER_SEV_NON_FATAL_CORRECTED (which is 2)
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severity_mask |= (1 << 2)
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return severity_mask
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def gpuid(device):
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for gpu_index, device_handle in enumerate(amdsmi_interface.amdsmi_get_processor_handles()):
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if device.value == device_handle.value:
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return gpu_index
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def dump_cper_entry(entry, cper_data, key):
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try:
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os.mkdir("/tmp/cper_dump", mode=0o777, dir_fd=None)
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except FileExistsError:
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pass
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cper_file = f"/tmp/cper_dump/cper_entry_{key}.bin"
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with open(cper_file, "wb") as file:
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size = cper_data[key]["size"]
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data = cper_data[key]["bytes"]
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data = bytes(x % 256 for x in data[:size])
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file.write(data)
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print(f" Wrote cper data to file: {cper_file}")
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json_file = f"/tmp/cper_dump/cper_entry_{key}.json"
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with open(json_file, "wt") as file:
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file.write(str(entry))
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def get_gpu_cper_entries():
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try:
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devices = amdsmi_interface.amdsmi_get_processor_handles()
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buffer_size = 1024*100
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initial_cursor = 0
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severity = "all"
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for device in devices:
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while True:
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entries, new_cursor, cper_data, status_code = amdsmi_get_gpu_cper_entries(
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device, get_severity_mask(severity), buffer_size, initial_cursor)
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gpu_id = gpuid(device)
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print("#############################################################################")
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print(f"cper entries for severity: '{severity}', gpu #{gpu_id}, cursor: {initial_cursor}-{new_cursor - 1}")
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for key, entry in entries.items():
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print("----------------")
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print("Entry", initial_cursor + key)
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print(" Error Severity:", entry.get("error_severity", "Unknown"))
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print(" Notify Type:", entry.get("notify_type", "Unknown"))
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print(" Timestamp:", entry.get("timestamp", ""))
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print(f" Cper entry metadata: {entry}")
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dump_cper_entry(entry, cper_data, key)
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if initial_cursor == new_cursor:
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break
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initial_cursor=new_cursor
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break
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except AmdSmiException as e:
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print(e)
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get_gpu_cper_entries()
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```
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Output:
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```shell
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cper entries for severity: 'all', gpu #0, cursor: 0-3
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----------------
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Entry 0
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Error Severity: non_fatal_corrected
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Notify Type: CMC
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Timestamp: 2025/09/07 00:14:22
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Cper entry metadata: {'error_severity': 'non_fatal_corrected', 'notify_type': 'CMC', 'timestamp': '2025/09/07 00:14:22', 'signature': b'CPER', 'revision': 256, 'signature_end': '0xffffffff', 'sec_cnt': 1, 'record_length': 472, 'platform_id': b'0x1002:0x74A2', 'creator_id': b'amdgpu', 'record_id': b'5:1', 'flags': 0, 'persistence_info': 0}
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Wrote cper data to file: /tmp/cper_dump/cper_entry_0.bin
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----------------
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Entry 1
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Error Severity: non_fatal_corrected
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Notify Type: CMC
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Timestamp: 2025/09/07 00:14:26
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Cper entry metadata: {'error_severity': 'non_fatal_corrected', 'notify_type': 'CMC', 'timestamp': '2025/09/07 00:14:26', 'signature': b'CPER', 'revision': 256, 'signature_end': '0xffffffff', 'sec_cnt': 1, 'record_length': 472, 'platform_id': b'0x1002:0x74A2', 'creator_id': b'amdgpu', 'record_id': b'5:2', 'flags': 0, 'persistence_info': 0}
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Wrote cper data to file: /tmp/cper_dump/cper_entry_1.bin
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----------------
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Entry 2
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Error Severity: non_fatal_corrected
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Notify Type: CMC
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Timestamp: 2025/09/08 06:12:11
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Cper entry metadata: {'error_severity': 'non_fatal_corrected', 'notify_type': 'CMC', 'timestamp': '2025/09/08 06:12:11', 'signature': b'CPER', 'revision': 256, 'signature_end': '0xffffffff', 'sec_cnt': 1, 'record_length': 472, 'platform_id': b'0x1002:0x74A2', 'creator_id': b'amdgpu', 'record_id': b'5:3', 'flags': 0, 'persistence_info': 0}
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Wrote cper data to file: /tmp/cper_dump/cper_entry_2.bin
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----------------
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Entry 3
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Error Severity: non_fatal_corrected
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Notify Type: CMC
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Timestamp: 2025/09/08 06:13:59
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Cper entry metadata: {'error_severity': 'non_fatal_corrected', 'notify_type': 'CMC', 'timestamp': '2025/09/08 06:13:59', 'signature': b'CPER', 'revision': 256, 'signature_end': '0xffffffff', 'sec_cnt': 1, 'record_length': 472, 'platform_id': b'0x1002:0x74A2', 'creator_id': b'amdgpu', 'record_id': b'5:4', 'flags': 0, 'persistence_info': 0}
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Wrote cper data to file: /tmp/cper_dump/cper_entry_3.bin
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#############################################################################
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cper entries for severity: 'all', gpu #0, cursor: 4-3
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```
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### Listing AFID numbers from CPER files
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This example code shows how to retrieve the AFID numbers from CPER files
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```python
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from amdsmi import *
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import os
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amdsmi_init()
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def amdsmi_get_afids_from_cper():
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directory_path = "/tmp/cper_dump/"
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print(f"Searching for cper file in {directory_path}")
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with os.scandir(directory_path) as cper_files:
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for cper_file in cper_files:
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if cper_file.is_file(): # Check if the entry is a file (not a subdirectory)
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if ".bin" in cper_file.path:
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print(f"Found {cper_file.path}")
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with open(cper_file.path, "rb") as file:
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raw = file.read()
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afids, num_afids = amdsmi_interface.amdsmi_get_afids_from_cper(raw)
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print(f"afids: {afids}")
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amdsmi_get_afids_from_cper()
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```
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Output:
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```shell
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sudo python3 afid.py
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Searching for cper file in /tmp/cper_dump/
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Found /tmp/cper_dump/cper_entry_0.bin
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afids: [17]
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Found /tmp/cper_dump/cper_entry_1.bin
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afids: [17]
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```
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