Commit 337d1b35 authored by Andrea Righi's avatar Andrea Righi Committed by Tejun Heo
Browse files

sched_ext: Move built-in idle CPU selection policy to a separate file 



As ext.c is becoming quite large, move the idle CPU selection policy to
separate files (ext_idle.c / ext_idle.h) for better code readability.

Moreover, group together all the idle CPU selection kfunc's to the same
btf_kfunc_id_set block.

No functional changes, this is purely code reorganization.

Suggested-by: default avatarYury Norov <yury.norov@gmail.com>
Signed-off-by: default avatarAndrea Righi <arighi@nvidia.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 1626e5ef

MAINTAINERS

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@@ -21006,8 +21006,7 @@ S: Maintained 
W:	https://github.com/sched-ext/scx

T:	git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git

F:	include/linux/sched/ext.h

F:	kernel/sched/ext.h

F:	kernel/sched/ext.c

F:	kernel/sched/ext*

F:	tools/sched_ext/

F:	tools/testing/selftests/sched_ext

























kernel/sched/build_policy.c



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@@ -61,6 +61,7 @@

















#ifdef CONFIG_SCHED_CLASS_EXT









# include "ext.c"









# include "ext_idle.c"









#endif



















#include "syscalls.c"
























kernel/sched/ext.c



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kernel/sched/ext_idle.c
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kernel/sched/ext_idle.h
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/* SPDX-License-Identifier: GPL-2.0 */









/*









 * BPF extensible scheduler class: Documentation/scheduler/sched-ext.rst









 *









 * Copyright (c) 2022 Meta Platforms, Inc. and affiliates.









 * Copyright (c) 2022 Tejun Heo <tj@kernel.org>









 * Copyright (c) 2022 David Vernet <dvernet@meta.com>









 * Copyright (c) 2024 Andrea Righi <arighi@nvidia.com>









 */









#ifndef _KERNEL_SCHED_EXT_IDLE_H









#define _KERNEL_SCHED_EXT_IDLE_H



















extern struct static_key_false scx_builtin_idle_enabled;



















#ifdef CONFIG_SMP









extern struct static_key_false scx_selcpu_topo_llc;









extern struct static_key_false scx_selcpu_topo_numa;



















void scx_idle_update_selcpu_topology(void);









void scx_idle_reset_masks(void);









void scx_idle_init_masks(void);









bool scx_idle_test_and_clear_cpu(int cpu);









s32 scx_pick_idle_cpu(const struct cpumask *cpus_allowed, u64 flags);









#else /* !CONFIG_SMP */









static inline void scx_idle_update_selcpu_topology(void) {}









static inline void scx_idle_reset_masks(void) {}









static inline void scx_idle_init_masks(void) {}









static inline bool scx_idle_test_and_clear_cpu(int cpu) { return false; }









static inline s32 scx_pick_idle_cpu(const struct cpumask *cpus_allowed, u64 flags)









{









	return -EBUSY;









}









#endif /* CONFIG_SMP */



















s32 scx_select_cpu_dfl(struct task_struct *p, s32 prev_cpu, u64 wake_flags, bool *found);



















extern int scx_idle_init(void);



















#endif /* _KERNEL_SCHED_EXT_IDLE_H */