linux-kernel - [RFC PATCH v2 17/25] sched/rt: Remove support for cgroups-v1

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250731105543.40832-18-yurand2000@gmail.com>
Date: Thu, 31 Jul 2025 12:55:35 +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 v2 17/25] sched/rt: Remove support for cgroups-v1

Disable control files for cgroups-v1, and allow only cgroups-v2. This should
simplify maintaining the code, also because cgroups-v1 are deprecated.

Signed-off-by: Yuri Andriaccio <yurand2000@...il.com>
---
 kernel/sched/core.c | 18 ------------------
 1 file changed, 18 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 465f44d7235..85950e10bb1 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -10039,20 +10039,6 @@ static struct cftype cpu_legacy_files[] = {
 };
 
 #ifdef CONFIG_RT_GROUP_SCHED
-static struct cftype rt_group_files[] = {
-	{
-		.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,
-	},
-	{ }	/* Terminate */
-};
-
 # ifdef CONFIG_RT_GROUP_SCHED_DEFAULT_DISABLED
 DEFINE_STATIC_KEY_FALSE(rt_group_sched);
 # else
@@ -10078,10 +10064,6 @@ __setup("rt_group_sched=", setup_rt_group_sched);
 
 static int __init cpu_rt_group_init(void)
 {
-	if (!rt_group_sched_enabled())
-		return 0;
-
-	WARN_ON(cgroup_add_legacy_cftypes(&cpu_cgrp_subsys, rt_group_files));
 	return 0;
 }
 subsys_initcall(cpu_rt_group_init);
-- 
2.50.1