Listing probe alias resolution failures

[David Smith]

Frank Ch. Eigler wrote:
> David Smith <dsmith@redhat.com> writes:
>> Here it seems like we should be able to discard the probe before
>> trying to look up its parameters.  Could you file a bugzilla on this
>> so we don't forget to look at this?
> 
> Specifically, are you suggesting that
> 
>    probe kernel.function("something_that_exists") ? { 
>       f($non_existent_variable) 
>    }
> 
> should be accepted?

Nope, I'm suggesting that:

    probe kernel.function("something_that_does_not_exist") ? {
       local1 = $arg1
       local2 = $arg2
       printf("%d %d\n", local1, local2)
    }

be accepted.

In other words, if we know a probe point doesn't exist, it shouldn't 
matter what arguments it references.

If we make this change, it will make it easier to write scripts that 
target multiple kernel versions and/or architectures.

-- 
David Smith
dsmith@redhat.com
Red Hat
http://www.redhat.com
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