| 1234567891011121314151617181920212223 |
- # SPDX-License-Identifier: GPL-2.0
- config RAS_CEC
- bool "Correctable Errors Collector"
- depends on X86_MCE && MEMORY_FAILURE && DEBUG_FS
- help
- This is a small cache which collects correctable memory errors per 4K
- page PFN and counts their repeated occurrence. Once the counter for a
- PFN overflows, we try to soft-offline that page as we take it to mean
- that it has reached a relatively high error count and would probably
- be best if we don't use it anymore.
- Bear in mind that this is absolutely useless if your platform doesn't
- have ECC DIMMs and doesn't have DRAM ECC checking enabled in the BIOS.
- config RAS_CEC_DEBUG
- bool "CEC debugging machinery"
- default n
- depends on RAS_CEC
- help
- Add extra files to (debugfs)/ras/cec to test the correctable error
- collector feature. "pfn" is a writable file that allows user to
- simulate an error in a particular page frame. "array" is a read-only
- file that dumps out the current state of all pages logged so far.
|
