Messages in this thread | | | Date | Wed, 12 Dec 2012 20:25:16 -0700 | From | David Ahern <> | Subject | Re: [GIT PULL] perf changes for v3.8 |
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On 12/12/12 7:53 PM, Linus Torvalds wrote: > Hmm. This may be entirely unrelated to this particular pull request, but > > perf record -e cycles:pp > > no longer works on my westmere machine (Operation not supported). It > used to work, but I haven't tried to bisect it, since I hope somebody > will just go "oh, I know what's up".
One last "I may know what's up" question. I wonder if you are tripping on this:
if (event->attr.precise_ip) { int precise = 0;
if (!event->attr.exclude_guest) return -EOPNOTSUPP;
Are you running an older perf binary on the 3.8 kernel?
Does this work: perf record -e cycles:ppH ...
David
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