Commit eb77cf1c authored by Dietmar Eggemann's avatar Dietmar Eggemann Committed by Peter Zijlstra
Browse files

sched/deadline: Remove unused def_dl_bandwidth 



Since commit 1724813d ("sched/deadline: Remove the sysctl_sched_dl
knobs") the default deadline bandwidth control structure has no purpose.
Remove it.

Signed-off-by: default avatarDietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarJuri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/r/20220302183433.333029-2-dietmar.eggemann@arm.com
parent 25795ef6

kernel/sched/core.c

+0 −1
Original line number Diff line number Diff line
@@ -9420,7 +9420,6 @@ void __init sched_init(void) 
#endif /* CONFIG_CPUMASK_OFFSTACK */



	init_rt_bandwidth(&def_rt_bandwidth, global_rt_period(), global_rt_runtime());

	init_dl_bandwidth(&def_dl_bandwidth, global_rt_period(), global_rt_runtime());



#ifdef CONFIG_SMP

	init_defrootdomain();

kernel/sched/deadline.c

+0 −7
Original line number Diff line number Diff line
@@ -18,8 +18,6 @@ 
#include "sched.h"

#include "pelt.h"



struct dl_bandwidth def_dl_bandwidth;



static inline struct task_struct *dl_task_of(struct sched_dl_entity *dl_se)

{

	return container_of(dl_se, struct task_struct, dl);
@@ -423,12 +421,10 @@ void init_dl_bandwidth(struct dl_bandwidth *dl_b, u64 period, u64 runtime) 
void init_dl_bw(struct dl_bw *dl_b)

{

	raw_spin_lock_init(&dl_b->lock);

	raw_spin_lock(&def_dl_bandwidth.dl_runtime_lock);

	if (global_rt_runtime() == RUNTIME_INF)

		dl_b->bw = -1;

	else

		dl_b->bw = to_ratio(global_rt_period(), global_rt_runtime());

	raw_spin_unlock(&def_dl_bandwidth.dl_runtime_lock);

	dl_b->total_bw = 0;

}
@@ -2731,9 +2727,6 @@ void sched_dl_do_global(void) 
	int cpu;

	unsigned long flags;



	def_dl_bandwidth.dl_period = global_rt_period();

	def_dl_bandwidth.dl_runtime = global_rt_runtime();



	if (global_rt_runtime() != RUNTIME_INF)

		new_bw = to_ratio(global_rt_period(), global_rt_runtime());

kernel/sched/sched.h

+0 −1
Original line number Diff line number Diff line
@@ -2333,7 +2333,6 @@ extern void resched_cpu(int cpu); 
extern struct rt_bandwidth def_rt_bandwidth;

extern void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime);



extern struct dl_bandwidth def_dl_bandwidth;

extern void init_dl_bandwidth(struct dl_bandwidth *dl_b, u64 period, u64 runtime);

extern void init_dl_task_timer(struct sched_dl_entity *dl_se);

extern void init_dl_inactive_task_timer(struct sched_dl_entity *dl_se);