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Diffstat (limited to 'meta-elisa/recipes-kernel/linux/files/edac_inject.rst')
| -rw-r--r-- | meta-elisa/recipes-kernel/linux/files/edac_inject.rst | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta-elisa/recipes-kernel/linux/files/edac_inject.rst b/meta-elisa/recipes-kernel/linux/files/edac_inject.rst new file mode 100644 index 00000000..0c91eda2 --- /dev/null +++ b/meta-elisa/recipes-kernel/linux/files/edac_inject.rst @@ -0,0 +1,43 @@ +EDAC Injection Device +=========================== + +This device lets you inject errors into the Linux EDAC system for +testing userland software that interacts with EDAC, since causing your +own memory errors is hard. + +The interface for injecting errors appears in the sysfs file system in +the same place as the EDAC driver's interface:: + + /sys/devices/system/edac/mc/mc<n>/.. + +The files for injection all start with "inject_", they are: + +- inject_ce - correctable error +- inject_de - deferred error +- inject_fe - fatal error +- inject_ie - informative error +- inject_ue - uncorrectable error + +Writing a number besides zero to these will result in that many errors +being injected. Each write injects new errors. Reading the value +returns the number of pending errors to be injected that have not +yet completed. + +In addition to these, some data is passed along with the error to show +where it occurred. These values mostly default to zero or empty, but +they can be set in the following write only values: + +- inject_low - low layer +- inject_mid - mid layer +- inject_msg - error message string. This defaults to "dummy <error + type>" where "<error type>" is "correctable error", "uncorrectable + error", etc. +- inject_oip - offset in page +- inject_other_detail - Other details string +- inject_pfn - page frame number +- inject_syndrome - symdrome +- inject_top - top layer + +Note that these values are taken when the count is written, so you are +free to set up the info, write an error count, change the info, write +another error count, etc. |