From: Lukasz Luba <lukasz.luba@arm.com>
To: Pierre Gondois <pierre.gondois@arm.com>
Cc: dietmar.eggemann@arm.com, rui.zhang@intel.com,
linux-pm@vger.kernel.org, amit.kucheria@verdurent.com,
amit.kachhap@gmail.com, daniel.lezcano@linaro.org,
viresh.kumar@linaro.org, len.brown@intel.com, pavel@ucw.cz,
rafael@kernel.org, ionela.voinescu@arm.com,
linux-kernel@vger.kernel.org, rostedt@goodmis.org,
mhiramat@kernel.org
Subject: Re: [PATCH 05/17] trace: energy_model: Add trace event for EM runtime modifications
Date: Wed, 10 May 2023 07:59:37 +0100 [thread overview]
Message-ID: <5572cf25-b89b-1044-f3db-29bb2100be41@arm.com> (raw)
In-Reply-To: <9994acf8-e0bc-55ce-9012-e36ef3b8ddab@arm.com>
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.
next prev parent reply other threads:[~2023-05-10 7:07 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-14 10:33 [PATCH 00/17] Introduce runtime modifiable Energy Model Lukasz Luba
2023-03-14 10:33 ` [PATCH 01/17] PM: EM: Refactor em_cpufreq_update_efficiencies() arguments Lukasz Luba
2023-03-27 17:16 ` Rafael J. Wysocki
2023-04-11 15:43 ` Pierre Gondois
2023-05-10 7:00 ` Lukasz Luba
2023-04-18 22:41 ` Lukasz Luba
2023-03-14 10:33 ` [PATCH 02/17] PM: EM: Find first CPU online while updating OPP efficiency Lukasz Luba
2023-04-11 15:40 ` Pierre Gondois
2023-05-10 7:08 ` Lukasz Luba
2023-05-15 8:47 ` Pierre Gondois
2023-03-14 10:33 ` [PATCH 03/17] PM: EM: Refactor em_pd_get_efficient_state() to be more flexible Lukasz Luba
2023-03-14 10:33 ` [PATCH 04/17] PM: EM: Create a new function em_compute_costs() Lukasz Luba
2023-03-14 10:33 ` [PATCH 05/17] trace: energy_model: Add trace event for EM runtime modifications Lukasz Luba
2023-04-11 15:39 ` Pierre Gondois
2023-05-10 6:59 ` Lukasz Luba [this message]
2023-03-14 10:33 ` [PATCH 06/17] PM: EM: Add update_power() callback for " Lukasz Luba
2023-03-14 10:33 ` [PATCH 07/17] PM: EM: Check if the get_cost() callback is present in em_compute_costs() Lukasz Luba
2023-03-14 10:33 ` [PATCH 08/17] PM: EM: Introduce runtime modifiable table Lukasz Luba
2023-03-14 10:33 ` [PATCH 09/17] PM: EM: Add RCU mechanism which safely cleans the old data Lukasz Luba
2023-03-14 10:33 ` [PATCH 10/17] PM: EM: Add runtime update interface to modify EM power Lukasz Luba
2023-04-11 15:40 ` Pierre Gondois
2023-05-10 6:55 ` Lukasz Luba
2023-05-15 8:48 ` Pierre Gondois
2023-03-14 10:33 ` [PATCH 11/17] PM: EM: Use runtime modified EM for CPUs energy estimation in EAS Lukasz Luba
2023-03-14 10:33 ` [PATCH 12/17] PM: EM: Add argument to get_cost() for runtime modification Lukasz Luba
2023-03-14 10:33 ` [PATCH 13/17] PM: EM: Refactor struct em_perf_domain and add default_table Lukasz Luba
2023-03-15 11:32 ` kernel test robot
2023-03-21 11:30 ` Lukasz Luba
2023-03-14 10:33 ` [PATCH 14/17] Documentation: EM: Add a new section about the design Lukasz Luba
2023-03-14 10:33 ` [PATCH 15/17] Documentation: EM: Add a runtime modifiable EM design description Lukasz Luba
2023-03-14 10:33 ` [PATCH 16/17] Documentation: EM: Add example with driver modifying the EM Lukasz Luba
2023-03-14 10:33 ` [PATCH 17/17] Documentation: EM: Describe the API of runtime modifications Lukasz Luba
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