Re: [patch] Re: [perf] Finding uninstalled modules Was Re: mailing list for trace users

[Avi Kivity <avi@redhat.com>]

On 09/23/2009 06:05 PM, Mike Galbraith wrote:
>
>> Well, you don't need to do anything to open a file from cwd: that's the
>> default.  You need to actively prepend /lib/modules/blah to get it to
>> load from the correct location.  What I don't understand is why it is
>> only hitting me (esp. as it used to work).
>>      
> If your modules.dep, always was missing the /lib/modules/blah bit, it
> never worked for you.  I wrote the thing with the rash assumption that
> it always contained full path like mine does :)
>
>    

Ah, changed there, I missed that part earlier, sorry.  So it's probably 
a change in modules.dep generation instead of tools/perf.

> So, I just need to check whether it's full path or not, prepend or take
> the path as is, and hope there aren't several other ways to get screwed
> up by modules.dep content.
>    

Maybe we should fix that then (though I prefer relative paths myself).

> Too bad the kernel doesn't store the path in /sys/modules/bla/path.
> That would be nicer than rummaging around in a mutable file.
>    

But then you rely on a running kernel.  Be nice to be able to ship 
perf.data.

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