| From | Alexander Shishkin <> | Subject | Re: [RFC PATCH 00/20] Coresight integration with perf | Date | Wed, 30 Sep 2015 13:18:03 +0300 |
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Mathieu Poirier <mathieu.poirier@linaro.org> writes:
> This patchset aims to integrate configuration and control of > the Coresight tracers with the perf sub-system. > > The goal is to use PMUs to represent tracers and the auxiliary > buffer enhancement to collect processor traces. As such a lot > of work is done to move the current Coresight sysFS oriented > configuration and control commands to perf's AUX API.
Another general question: is there anything that prevents a sysfs user from changing ETM/ETB configuration while it's used by a perf event? I couldn't find any code in this patchset that would implement such exclusivity.
Thanks, -- Alex
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