Re: [GIT PULL 00/16] perf/core improvements and fixes

[Joerg Roedel]

On Mon, Feb 13, 2012 at 10:23:07PM -0700, David Ahern wrote:
> On 2/13/12 10:10 PM, Namhyung Kim wrote:
> >>
> >
> >It happened because I used old kernel version that isn't aware of the
> >exclude_guest bit. So the check on attr->__reserved_1 in
> >core.c::perf_copy_attr() failed and then ended up seeing EINVAL at
> >perf_evsel__open().
> 
> comes back to 1aed2671738785e8f5aea663a6fda91aa7ef59b5 again. See
> 
> https://lkml.org/lkml/2012/2/8/234

Grr. I totally forgot that issue. Is there some way to detect the perf
kernel-features? Otherwise the only fix seems to be to drop the patch
changing the default. The crashes should be fixed by the other patch
already.


	Joerg

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