linux-kernel - [PATCH 0/3] sched/rt: Fix schedulable check with rt_group

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Message-Id: <20260119-sched-rert_groups-v1-0-80c1e5269910@suse.com>
Date: Mon, 19 Jan 2026 18:41:18 +0100
From: Michal Koutný <mkoutny@...e.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, 
 Michal Koutný <mkoutny@...e.com>
Subject: [PATCH 0/3] sched/rt: Fix schedulable check with rt_group_sched=0
 and cleanups

The crux is the first commit which fixes how sysctl
kernel.sched_rt_runtime_us changes are validated with
CONFIG_RT_GROUP_SCHED but rt_group_sched=0.
The rest are cleanups that occurred to me.

Signed-off-by: Michal Koutný <mkoutny@...e.com>
---
Michal Koutný (3):
      sched/rt: Skip group schedulable check with rt_group_sched=0
      sched/rt: Move group schedulability check to sched_rt_global_validate()
      sched/rt: Cleanup global RT bandwidth functions

 kernel/sched/rt.c | 42 +++++++++---------------------------------
 1 file changed, 9 insertions(+), 33 deletions(-)
---
base-commit: 944aacb68baf7624ab8d277d0ebf07f025ca137c
change-id: 20260119-sched-rert_groups-431e2d5d1c57

Best regards,
-- 
Michal Koutný <mkoutny@...e.com>