linux-kernel - [RFC PATCH 7/9] sched/core: Cgroup v2 support

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Message-ID: <20250605071412.139240-8-yurand2000@gmail.com>
Date: Thu,  5 Jun 2025 09:14:10 +0200
From: Yuri Andriaccio <yurand2000@...il.com>
To: Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ben Segall <bsegall@...gle.com>,
	Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>
Cc: linux-kernel@...r.kernel.org,
	Luca Abeni <luca.abeni@...tannapisa.it>,
	Yuri Andriaccio <yuri.andriaccio@...tannapisa.it>
Subject: [RFC PATCH 7/9] sched/core: Cgroup v2 support

From: luca abeni <luca.abeni@...tannapisa.it>

Make rt_runtime_us and rt_period_us virtual files accessible also to the cgroup
v2 controller, effectively enabling the RT_GROUP_SCHED mechanism to cgroups v2.

Signed-off-by: luca abeni <luca.abeni@...tannapisa.it>
---
 kernel/sched/core.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index e90b3608a..cad2963a2 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -10134,6 +10134,18 @@ static struct cftype cpu_files[] = {
 		.seq_show = cpu_uclamp_max_show,
 		.write = cpu_uclamp_max_write,
 	},
+#endif
+#ifdef CONFIG_RT_GROUP_SCHED
+	{
+		.name = "rt_runtime_us",
+		.read_s64 = cpu_rt_runtime_read,
+		.write_s64 = cpu_rt_runtime_write,
+	},
+	{
+		.name = "rt_period_us",
+		.read_u64 = cpu_rt_period_read_uint,
+		.write_u64 = cpu_rt_period_write_uint,
+	},
 #endif
 	{ }	/* terminate */
 };
-- 
2.49.0