linux-kernel - [PATCH v1 01/10] cpufreq: Add thermal_cooling_device pointer to struct cpufreq

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Date:   Mon, 14 Jan 2019 22:04:53 +0530
From:   Amit Kucheria <amit.kucheria@...aro.org>
To:     linux-kernel@...r.kernel.org
Cc:     linux-arm-msm@...r.kernel.org, viresh.kumar@...aro.org,
        edubezval@...il.com, swboyd@...omium.org, dianders@...omium.org,
        mka@...omium.org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
        linux-pm@...r.kernel.org
Subject: [PATCH v1 01/10] cpufreq: Add thermal_cooling_device pointer to struct cpufreq_policy

Several cpufreq drivers register themselves as thermal cooling devices.
Adding a pointer to struct cpufreq_policy removes the need for them to
store this pointer in a private data structure.

We can then auto-register the cpufreq driver as a thermal cooling device
from cpufreq core code.

Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>
---
 include/linux/cpufreq.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index c86d6d8bdfed..7d0cf54125fa 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -95,6 +95,11 @@ struct cpufreq_policy {
 	struct cpufreq_frequency_table	*freq_table;
 	enum cpufreq_table_sorting freq_table_sorted;
 
+#ifdef CONFIG_CPU_THERMAL
+	/* Pointer to the cooling device if used for thermal mitigation */
+	struct thermal_cooling_device *cooldev;
+#endif
+
 	struct list_head        policy_list;
 	struct kobject		kobj;
 	struct completion	kobj_unregister;
-- 
2.17.1