On Wed, Apr 16, 2014 at 12:48:50PM -0500, Eric Sandeen wrote:
> XFS_ERROR was designed long ago to trap return values,
> but it's not runtime configurable, it's not consistently used,
> and we can do the same thing today with systemtap, using
> something like:
>
> probe module("xfs").function("xfs_*").return { if (@defined($return) && $return == VALUE) { ... } }
Gives me a version just using ftrace, or at least a kprobes based module
that we can merged in the kernel tree and this would be fine for me.
Requiring a massive blob of questionable out of tree module code and a
compiler is an absolute no-go.
NAK for now.
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