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Subject: Re: [PATCH] perf tests: test_arm_coresight: Simplify source iteration
Date:   Mon, 30 Oct 2023 11:59:05 -0700
Message-ID: <169869215960.2773399.671365445660310243.b4-ty@kernel.org>
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On Mon, 23 Oct 2023 14:15:49 +0100, James Clark wrote:
> There are two reasons to do this, firstly there is a shellcheck warning
> in cs_etm_dev_name(), which can be completely deleted. And secondly the
> current iteration method doesn't support systems with both ETE and ETM
> because it picks one or the other. There isn't a known system with this
> configuration, but it could happen in the future.
> 
> Iterating over all the sources for each CPU can be done by going through
> /sys/bus/event_source/devices/cs_etm/cpu* and following the symlink back
> to the Coresight device in /sys/bus/coresight/devices. This will work
> whether the device is ETE, ETM or any future name, and is much simpler
> and doesn't require any hard coded version numbers
> 
> [...]

Applied to perf-tools-next, thanks!