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Message-ID: <20120607204915.GA1698@m.redhat.com> Date: Thu, 7 Jun 2012 22:49:15 +0200 From: Jiri Olsa <jolsa@...hat.com> To: Stephane Eranian <eranian@...gle.com> Cc: Andi Kleen <andi@...stfloor.org>, acme@...hat.com, linux-kernel@...r.kernel.org Subject: Re: perf user tool precise attribute broken in 3.5rc1+ On Thu, Jun 07, 2012 at 10:25:47PM +0200, Stephane Eranian wrote: > What CPU model? +1, latest tip works for me ;) jirka > > On Thu, Jun 7, 2012 at 10:23 PM, Andi Kleen <andi@...stfloor.org> wrote: > > > > With a perf user tool compiled from a 3.5rc1+ kernel I cannot > > use the 'p' attribute anymore. Always get > > > > ak@...rock:~> ./perf record -e cycles:p ./t > > > > Error: sys_perf_event_open() syscall returned with 22 (Invalid argument). /bin/dmesg may provide additional information. > > > > Fatal: No CONFIG_PERF_EVENTS=y kernel support configured? > > > > ./t: Terminated > > > > With an older perf it works, so the kernel is ok. > > > > ak@...rock:~> ./perf record -e cycles:p ./t > > [ perf record: Woken up 1 times to write data ] > > [ perf record: Captured and wrote 0.005 MB perf.data (~217 samples) ] > > ak@...rock:~> > > > > > > -Andi > > -- > > ak@...ux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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