linux-kernel - [tip: sched/core] sched: Convert CONFIG_RT_GROUP

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Message-ID: <174413913751.31282.777696833300765718.tip-bot2@tip-bot2>
Date: Tue, 08 Apr 2025 19:05:37 -0000
From: tip-bot2 for Michal Koutný <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: mkoutny@...e.com, "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: sched/core] sched: Convert CONFIG_RT_GROUP_SCHED macros to code
 conditions

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     433bce5dadb4ec3d5eda99c5125926c045b79005
Gitweb:        https://git.kernel.org/tip/433bce5dadb4ec3d5eda99c5125926c045b79005
Author:        Michal Koutný <mkoutny@...e.com>
AuthorDate:    Mon, 10 Mar 2025 18:04:33 +01:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 08 Apr 2025 20:55:52 +02:00

sched: Convert CONFIG_RT_GROUP_SCHED macros to code conditions

Convert the blocks guarded by macros to regular code so that the RT
group code gets more compile validation. Reasoning is in
Documentation/process/coding-style.rst 21) Conditional Compilation.
With that, no functional change is expected.

Signed-off-by: Michal Koutný <mkoutny@...e.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lkml.kernel.org/r/20250310170442.504716-2-mkoutny@suse.com
---
 kernel/sched/rt.c       | 10 ++++------
 kernel/sched/syscalls.c |  2 +-
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index fa03ec3..2ade81e 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -1066,13 +1066,12 @@ inc_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio)
 {
 	struct rq *rq = rq_of_rt_rq(rt_rq);
 
-#ifdef CONFIG_RT_GROUP_SCHED
 	/*
 	 * Change rq's cpupri only if rt_rq is the top queue.
 	 */
-	if (&rq->rt != rt_rq)
+	if (IS_ENABLED(CONFIG_RT_GROUP_SCHED) && &rq->rt != rt_rq)
 		return;
-#endif
+
 	if (rq->online && prio < prev_prio)
 		cpupri_set(&rq->rd->cpupri, rq->cpu, prio);
 }
@@ -1082,13 +1081,12 @@ dec_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio)
 {
 	struct rq *rq = rq_of_rt_rq(rt_rq);
 
-#ifdef CONFIG_RT_GROUP_SCHED
 	/*
 	 * Change rq's cpupri only if rt_rq is the top queue.
 	 */
-	if (&rq->rt != rt_rq)
+	if (IS_ENABLED(CONFIG_RT_GROUP_SCHED) && &rq->rt != rt_rq)
 		return;
-#endif
+
 	if (rq->online && rt_rq->highest_prio.curr != prev_prio)
 		cpupri_set(&rq->rd->cpupri, rq->cpu, rt_rq->highest_prio.curr);
 }
diff --git a/kernel/sched/syscalls.c b/kernel/sched/syscalls.c
index c326de1..2bf5281 100644
--- a/kernel/sched/syscalls.c
+++ b/kernel/sched/syscalls.c
@@ -640,7 +640,7 @@ change:
 			retval = -EPERM;
 			goto unlock;
 		}
-#endif
+#endif /* CONFIG_RT_GROUP_SCHED */
 #ifdef CONFIG_SMP
 		if (dl_bandwidth_enabled() && dl_policy(policy) &&
 				!(attr->sched_flags & SCHED_FLAG_SUGOV)) {