linux-kernel - [Patch v10 2/9] sched/topology: Add hook to read per cpu thermal pressure.

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Message-Id: <20200222005213.3873-3-thara.gopinath@linaro.org>
Date:   Fri, 21 Feb 2020 19:52:06 -0500
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     mingo@...hat.com, peterz@...radead.org, ionela.voinescu@....com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rui.zhang@...el.com, qperret@...gle.com, daniel.lezcano@...aro.org,
        viresh.kumar@...aro.org, rostedt@...dmis.org, will@...nel.org,
        catalin.marinas@....com, sudeep.holla@....com,
        juri.lelli@...hat.com, corbet@....net
Cc:     linux-kernel@...r.kernel.org, amit.kachhap@...il.com,
        javi.merino@...nel.org, amit.kucheria@...durent.com
Subject: [Patch v10 2/9] sched/topology: Add hook to read per cpu thermal pressure.

Introduce arch_scale_thermal_pressure to retrieve per cpu thermal
pressure.

Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
---
v6->v7:
	- Renamed arch_scale_thermal_capacity to arch_cpu_thermal_pressure
	  as per review comments from Peter, Dietmar and Ionela.
v9->v10:
	- Renamed arch_cpu_thermal_pressure to arch_scale_thermal_pressure
	  as per review comments from Dietmar.

 include/linux/sched/topology.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
index f341163fedc9..af9319e4cfb9 100644
--- a/include/linux/sched/topology.h
+++ b/include/linux/sched/topology.h
@@ -225,6 +225,14 @@ unsigned long arch_scale_cpu_capacity(int cpu)
 }
 #endif
 
+#ifndef arch_scale_thermal_pressure
+static __always_inline
+unsigned long arch_scale_thermal_pressure(int cpu)
+{
+	return 0;
+}
+#endif
+
 static inline int task_node(const struct task_struct *p)
 {
 	return cpu_to_node(task_cpu(p));
-- 
2.20.1