external/fwts: Add parser to extract olog pattern definitions

The fwts project has a facility to scan system logs for interesting
error messages, by matching on patterns in a JSON file. Recently, Deb
has added support for the OPAL msglog to fwts, called 'olog':

  http://kernel.ubuntu.com/git/hwe/fwts.git/commit/?id=652b79b

However, we don't yet have any patterns for OPAL.

Rather than generate a separate set of patterns that may go stale, Anton
suggested that we may want to pull these directly from the OPAL source.

This change implements a parser to generate olog pattern definitions
from annotations in OPAL itself. For example, a check in the flash code
might look like:

  if (!ffs) {
  	/**
  	 * @fwts-label SystemFlashNoPartitionTable
  	 * @fwts-advice OPAL Could not read a partition table on
  	 *    system flash. Since we've still booted the machine (which
  	 *    requires flash), check that we're registering the proper
  	 *    system flash device.
  	 */
  	prlog(PR_WARNING, "FLASH: attempted to register system flash "
  			"%s, wwhich has no partition info\n", name);
  	return;
  }

By running generate-fwts-olog on the codebase, we get:

  {
   "olog_error_warning_patterns": [
    {
     "advice": "OPAL Could not read a partition table on system flash. Since we've still booted the machine (which requires flash), check that we're registering the proper system flash device.",
     "compare_mode": "regex",
     "label": "SystemFlashNoPartitionTable",
     "level": "LOG_LEVEL_HIGH",
     "pattern": "FLASH: attempted to register system flash .*, wwhich has no partition info"
    }
   ]
  }

- which is suitable for input to the fwts pattern definitions.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
[stewart@linux.vnet.ibm.com: squash trailing whitespace]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

0 files changed, 0 insertions, 0 deletions