sched: Clean up and standardize #if/#else/#endif markers in sched/rt.c

 - Use the standard #ifdef marker format for larger blocks,
   where appropriate:

        #if CONFIG_FOO
        ...
        #else /* !CONFIG_FOO: */
        ...
        #endif /* !CONFIG_FOO */

 - Fix whitespace noise and other inconsistencies.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20250528080924.2273858-15-mingo@kernel.org

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 16008ac33e1441e19de702db3cf6f1260a336b27..7e8ed05d302a955df9f9e3c44d79b2e51746ab46 100644 (file)
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -63,7 +63,7 @@ static int __init sched_rt_sysctl_init(void)
        return 0;
 }
 late_initcall(sched_rt_sysctl_init);
-#endif
+#endif /* CONFIG_SYSCTL */
 
 void init_rt_rq(struct rt_rq *rt_rq)
 {
@@ -294,7 +294,7 @@ err:
        return 0;
 }
 
-#else /* CONFIG_RT_GROUP_SCHED */
+#else /* !CONFIG_RT_GROUP_SCHED: */
 
 #define rt_entity_is_task(rt_se) (1)
 
@@ -330,7 +330,7 @@ int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent)
 {
        return 1;
 }
-#endif /* CONFIG_RT_GROUP_SCHED */
+#endif /* !CONFIG_RT_GROUP_SCHED */
 
 #ifdef CONFIG_SMP
 
@@ -433,7 +433,7 @@ static void dequeue_pushable_task(struct rq *rq, struct task_struct *p)
        }
 }
 
-#else
+#else /* !CONFIG_SMP: */
 
 static inline void enqueue_pushable_task(struct rq *rq, struct task_struct *p)
 {
@@ -446,7 +446,7 @@ static inline void dequeue_pushable_task(struct rq *rq, struct task_struct *p)
 static inline void rt_queue_push_tasks(struct rq *rq)
 {
 }
-#endif /* CONFIG_SMP */
+#endif /* !CONFIG_SMP */
 
 static void enqueue_top_rt_rq(struct rt_rq *rt_rq);
 static void dequeue_top_rt_rq(struct rt_rq *rt_rq, unsigned int count);
@@ -488,12 +488,12 @@ static inline bool rt_task_fits_capacity(struct task_struct *p, int cpu)
 
        return cpu_cap >= min(min_cap, max_cap);
 }
-#else
+#else /* !CONFIG_UCLAMP_TASK: */
 static inline bool rt_task_fits_capacity(struct task_struct *p, int cpu)
 {
        return true;
 }
-#endif
+#endif /* !CONFIG_UCLAMP_TASK */
 
 #ifdef CONFIG_RT_GROUP_SCHED
 
@@ -801,9 +801,9 @@ static void balance_runtime(struct rt_rq *rt_rq)
                raw_spin_lock(&rt_rq->rt_runtime_lock);
        }
 }
-#else /* !CONFIG_SMP */
+#else /* !CONFIG_SMP: */
 static inline void balance_runtime(struct rt_rq *rt_rq) {}
-#endif /* CONFIG_SMP */
+#endif /* !CONFIG_SMP */
 
 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
 {
@@ -933,7 +933,7 @@ static int sched_rt_runtime_exceeded(struct rt_rq *rt_rq)
        return 0;
 }
 
-#else /* !CONFIG_RT_GROUP_SCHED */
+#else /* !CONFIG_RT_GROUP_SCHED: */
 
 typedef struct rt_rq *rt_rq_iter_t;
 
@@ -985,7 +985,7 @@ static void __enable_runtime(struct rq *rq) { }
 static void __disable_runtime(struct rq *rq) { }
 #endif
 
-#endif /* CONFIG_RT_GROUP_SCHED */
+#endif /* !CONFIG_RT_GROUP_SCHED */
 
 static inline int rt_se_prio(struct sched_rt_entity *rt_se)
 {
@@ -1036,7 +1036,7 @@ static void update_curr_rt(struct rq *rq)
                                do_start_rt_bandwidth(sched_rt_bandwidth(rt_rq));
                }
        }
-#endif
+#endif /* CONFIG_RT_GROUP_SCHED */
 }
 
 static void
@@ -1110,14 +1110,14 @@ dec_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio)
                cpupri_set(&rq->rd->cpupri, rq->cpu, rt_rq->highest_prio.curr);
 }
 
-#else /* CONFIG_SMP */
+#else /* !CONFIG_SMP: */
 
 static inline
 void inc_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio) {}
 static inline
 void dec_rt_prio_smp(struct rt_rq *rt_rq, int prio, int prev_prio) {}
 
-#endif /* CONFIG_SMP */
+#endif /* !CONFIG_SMP */
 
 #if defined CONFIG_SMP || defined CONFIG_RT_GROUP_SCHED
 static void
@@ -1158,12 +1158,12 @@ dec_rt_prio(struct rt_rq *rt_rq, int prio)
        dec_rt_prio_smp(rt_rq, prio, prev_prio);
 }
 
-#else
+#else /* !(CONFIG_SMP || CONFIG_RT_GROUP_SCHED): */
 
 static inline void inc_rt_prio(struct rt_rq *rt_rq, int prio) {}
 static inline void dec_rt_prio(struct rt_rq *rt_rq, int prio) {}
 
-#endif /* CONFIG_SMP || CONFIG_RT_GROUP_SCHED */
+#endif /* !(CONFIG_SMP || CONFIG_RT_GROUP_SCHED) */
 
 #ifdef CONFIG_RT_GROUP_SCHED
 
@@ -1185,7 +1185,7 @@ dec_rt_group(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
        WARN_ON(!rt_rq->rt_nr_running && rt_rq->rt_nr_boosted);
 }
 
-#else /* CONFIG_RT_GROUP_SCHED */
+#else /* !CONFIG_RT_GROUP_SCHED: */
 
 static void
 inc_rt_group(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
@@ -1195,7 +1195,7 @@ inc_rt_group(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
 static inline
 void dec_rt_group(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq) {}
 
-#endif /* CONFIG_RT_GROUP_SCHED */
+#endif /* !CONFIG_RT_GROUP_SCHED */
 
 static inline
 unsigned int rt_se_nr_running(struct sched_rt_entity *rt_se)
@@ -1685,7 +1685,7 @@ static void wakeup_preempt_rt(struct rq *rq, struct task_struct *p, int flags)
         */
        if (p->prio == donor->prio && !test_tsk_need_resched(rq->curr))
                check_preempt_equal_prio(rq, p);
-#endif
+#endif /* CONFIG_SMP */
 }
 
 static inline void set_next_task_rt(struct rq *rq, struct task_struct *p, bool first)
@@ -2512,11 +2512,11 @@ prio_changed_rt(struct rq *rq, struct task_struct *p, int oldprio)
                 */
                if (p->prio > rq->rt.highest_prio.curr)
                        resched_curr(rq);
-#else
+#else /* !CONFIG_SMP: */
                /* For UP simply resched on drop of prio */
                if (oldprio < p->prio)
                        resched_curr(rq);
-#endif /* CONFIG_SMP */
+#endif /* !CONFIG_SMP */
        } else {
                /*
                 * This task is not running, but if it is
@@ -2552,9 +2552,9 @@ static void watchdog(struct rq *rq, struct task_struct *p)
                }
        }
 }
-#else
+#else /* !CONFIG_POSIX_TIMERS: */
 static inline void watchdog(struct rq *rq, struct task_struct *p) { }
-#endif
+#endif /* !CONFIG_POSIX_TIMERS */
 
 /*
  * scheduler tick hitting a task of our scheduling class.
@@ -2623,7 +2623,7 @@ static int task_is_throttled_rt(struct task_struct *p, int cpu)
 
        return rt_rq_throttled(rt_rq);
 }
-#endif
+#endif /* CONFIG_SCHED_CORE */
 
 DEFINE_SCHED_CLASS(rt) = {
 
@@ -2646,7 +2646,7 @@ DEFINE_SCHED_CLASS(rt) = {
        .task_woken             = task_woken_rt,
        .switched_from          = switched_from_rt,
        .find_lock_rq           = find_lock_lowest_rq,
-#endif
+#endif /* !CONFIG_SMP */
 
        .task_tick              = task_tick_rt,
 
@@ -2890,7 +2890,7 @@ int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk)
        return 1;
 }
 
-#else /* !CONFIG_RT_GROUP_SCHED */
+#else /* !CONFIG_RT_GROUP_SCHED: */
 
 #ifdef CONFIG_SYSCTL
 static int sched_rt_global_constraints(void)
@@ -2898,7 +2898,7 @@ static int sched_rt_global_constraints(void)
        return 0;
 }
 #endif /* CONFIG_SYSCTL */
-#endif /* CONFIG_RT_GROUP_SCHED */
+#endif /* !CONFIG_RT_GROUP_SCHED */
 
 #ifdef CONFIG_SYSCTL
 static int sched_rt_global_validate(void)