Re: [PATCH 05/11] perf intel-pt: Use itrace error flags to suppress some errors

Andi Kleen
2020-07-09T17:51:01Z

On Thu, Jul 09, 2020 at 08:36:22PM +0300, Adrian Hunter wrote:
> The itrace "e" option may be followed by a number which has the
> following effect for Intel PT:
> 1 Suppress overflow events
> 2 Suppress trace data lost events
> The values may be combined by bitwise OR'ing them.
>
> Suppressing those errors can be useful for testing and debugging
> because they are not due to decoding.

I suspect it will be useful to more than just decoding and debugging.

But the number is not a nice user interface.

How about e[....]

like e[ol]

Also it's a bit unusual that this disables instead of enables, but ok.

-Andi