Re: [PATCHv2] perf: Fix vmalloc ring buffer free function

From: Jiri Olsa
Date: Mon Mar 11 2013 - 14:03:11 EST

On Mon, Mar 11, 2013 at 06:44:45PM +0100, Peter Zijlstra wrote:
> On Mon, 2013-03-11 at 17:43 +0100, Jiri Olsa wrote:
> > I did not know there were other plans for that, seemed useless
> I like to keep form, confuses me less :-)


> Anyway, why are we getting to that part of perf_output_begin() if we
> don't have any data pages to begin with? Shouldn't we bail before there
> someplace? Like at the !rb->nr_pages check?

perf_output_begin actually does the !rb->nr_pages check
looks like we could check it earlier in some casese, I'll
update my todo list ;-)

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