Em Tue, Jun 26, 2018 at 09:17:01AM +0200, Thomas Richter escreveu:

perf stat command line flag -T to display transaction counters is
currently supported for x86 only.
Add support for s390. It is based on the metrics flag -M transaction
using the architecture dependend json files. This requires a metric
named "transaction" in the json files for the platform.

Introduce new function metricgroup__has_metric() to check for
the existance of a metric_name transaction.

As suggested by Andi Kleen, this is the new approach to support
transactions counters. Other architectures will follow.

Applied the 4-part patch series,

- Arnaldo