linux-kernel - [PATCH 1/2] PM: EM: Add macro em_is

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Message-ID: <20240308065922.10329-1-poshao.chen@mediatek.com>
Date: Fri, 8 Mar 2024 14:59:21 +0800
From: PoShao Chen <poshao.chen@...iatek.com>
To: <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>
CC: <lukasz.luba@....com>, <dietmar.eggemann@....com>, <rafael@...nel.org>,
	<mingo@...nel.org>, <rafael.j.wysocki@...el.com>, <rui.zhang@...el.com>,
	<vincent.guittot@...aro.org>, <daniel.lezcano@...aro.org>,
	<viresh.kumar@...aro.org>, <amit.kachhap@...il.com>,
	<clive.lin@...iatek.com>, <ccj.yeh@...iatek.com>,
	<ching-hao.hsu@...iatek.com>, <poshao.chen@...iatek.com>
Subject: [PATCH 1/2] PM: EM: Add macro em_is_microwatts()

This patch adds a new macro, em_is_microwatts(), which checks if
the EM_PERF_DOMAIN_MICROWATTS flag is set for a given Energy Model.
This macro enables other parts of the kernel, such as cooling
devices, to easily determine the unit of power used by the Energy
Model and to perform the necessary conversions if the values
are provided in microwatts.

Signed-off-by: PoShao Chen <poshao.chen@...iatek.com>
---
 include/linux/energy_model.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index 770755df852f..68145b4368d1 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -92,6 +92,7 @@ struct em_perf_domain {
 
 #define em_span_cpus(em) (to_cpumask((em)->cpus))
 #define em_is_artificial(em) ((em)->flags & EM_PERF_DOMAIN_ARTIFICIAL)
+#define em_is_microwatts(em) ((em)->flags & EM_PERF_DOMAIN_MICROWATTS)
 
 #ifdef CONFIG_ENERGY_MODEL
 /*
-- 
2.18.0