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

Ingo Molnar
2015-07-02T09:28:33Z

* 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