Messages in this thread | | | Date | Thu, 10 Feb 2011 15:18:14 -0800 | From | Mike Waychison <> | Subject | SMBIOS / DMI Event Logs in Linux? |
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Hey guys,
I need some guidance. Do either of you know of any attempts to have the kernel decode and display/interact with DMI type 15: System Event Log?
The event log I'm dealing with while cleaning up the "gsmi" driver interacts with a log that is modeled after the System Event Log. I'm wondering if there is any precedent for a clean way to expose the event log, I'd like to use it (replacing the ioctls from my earlier patch series send-out).
FYI, we use OEM specific headers and descriptors, which probably doesn't help.
Do most folks that need access to this data rely on /dev/mem and dmidecode? I'd like to avoid going that route if possible.
Lacking any better ideas though, I was thinking of something along the lines of the following:
$ cat /sys/firmware/gsmi/eventlog <offset> <boot number> <recorded time> <quoted reason> <optional data> ...
with a single event log entry per line. <offset> would be the record number, <boot number> is the recorded boot number <recorded time> comes from each record, <quoted reason> is the English translation of Event Log Types from the DMTF standard + vendor extended types we use. <optional data> is space separated values associated with <quoted reason>
We also have a interfaces for clearing a fraction of the log, which I'm thinking is probably best expressed as a value of 0 through 100 written to a file, maybe /sys/firmware/gsmi/clear_eventlog ?
As well, we need to export to userland a way to append data to the log. I was thinking we could write a parser to take in an entry and ensure it is well-formatted, but I'm a little hesitant to go this route as our records embed a timestamp, which I'd rather not have to figure out from within the kernel. Perhaps a raw (binary) interface to write records to the log would suffice? /sys/firmware/gsmi/append_to_eventlog ?
If so, does /sys/firmware/gsmi/raw_eventlog make sense too?
Thanks,
Mike Waychison
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