Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS

[Ingo Molnar <mingo@kernel.org>]

* Adrian Hunter <adrian.hunter@intel.com> wrote:

> I am going to need to know what hardware it is and cpu feature flags i.e.
> /proc/cpuinfo
> 
> Also ls /sys/bus/event_source/devices

Sorry about the delay, the merge window is busier than usual ...

So I tried it on:

  1) Intel box, old kernel, new tools: threw an error
  2)   AMD box, new kernel, new tools: threw an error
  3)   AMD box, old kernel, new tools: threw an error

failure was expected in all 3 cases, but it threw the exact same error with no 
real indication about what the problem was, while the real problem was different 
for each case:

  1)  good CPU,  bad kernel
  2)   bad CPU, good kernel
  3)   bad CPU,  bad kernel

I'd expect the 'good CPU, good kernel' combination to work:

  4) Intel box, new kernel, new tools

... but haven't tried it yet.

Thanks,

	Ingo