mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 08:44:21 +08:00
60fd42d26c
The pfn and array files in (debugfs)/ras/cec are intended for debugging the CEC code itself. They are not needed on production systems, so the default setting for this CONFIG option is "n". [ bp: Have it with less ifdeffery by using IS_ENABLED(). ] Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de>
24 lines
996 B
Plaintext
24 lines
996 B
Plaintext
# 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.
|