Re: [PATCH 05/17] trace: energy_model: Add trace event for EM runtime modifications

From: Lukasz Luba
Date: Wed May 10 2023 - 03:07:49 EST




On 4/11/23 16:39, Pierre Gondois wrote:
Hello Lukasz,
Just a suggestion, maybe it would be good to trace the CPUs affected by

We print the device name in the trace event, which would be the first
CPU in the frequency domain.

the modification. It is possible to retrieve this information by going
to /sys/kernel/debug/energy_model/xxx/cpus, but might be simpler when
parsing a trace.

We don't want to introduce an array of CPUs, or a name like cpus0-3,
which than has to be parsed in more complex way. Also, the other devices
like GPU might use this trace event, so I just wanted to keep it simple
and generic to handle them all.