Re: perf user tool precise attribute broken in 3.5rc1+

[Jiri Olsa <jolsa@redhat.com>]

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@firstfloor.org> wrote:
> >
> > With a perf user tool compiled from a 3.5rc1+ kernel I cannot
> > use the 'p' attribute anymore. Always get
> >
> > ak@petrock:~> ./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@petrock:~> ./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@petrock:~>
> >
> >
> > -Andi
> > --
> > ak@linux.intel.com -- Speaking for myself only.