Messages in this thread Patch in this message | | | From | Tejun Heo <> | Subject | [PATCH 5/7] sched: make sched_notifiers unconditional | Date | Wed, 2 Dec 2009 12:56:50 +0900 |
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sched_notifiers will be used by workqueue which is always there. Always enable sched_notifiers.
Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Ingo Molnar <mingo@elte.hu> --- arch/ia64/kvm/Kconfig | 1 - arch/powerpc/kvm/Kconfig | 1 - arch/s390/kvm/Kconfig | 1 - arch/x86/kvm/Kconfig | 1 - include/linux/kvm_host.h | 2 -- include/linux/sched.h | 6 ------ init/Kconfig | 4 ---- kernel/sched.c | 13 ------------- 8 files changed, 0 insertions(+), 29 deletions(-)
diff --git a/arch/ia64/kvm/Kconfig b/arch/ia64/kvm/Kconfig index a38b72e..a9e2b9c 100644 --- a/arch/ia64/kvm/Kconfig +++ b/arch/ia64/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM depends on HAVE_KVM && MODULES && EXPERIMENTAL # for device assignment: depends on PCI - select SCHED_NOTIFIERS select ANON_INODES select HAVE_KVM_IRQCHIP select KVM_APIC_ARCHITECTURE diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 6447702..092503e 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -18,7 +18,6 @@ if VIRTUALIZATION config KVM bool - select SCHED_NOTIFIERS select ANON_INODES config KVM_440 diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig index 3bc7045..e125d45 100644 --- a/arch/s390/kvm/Kconfig +++ b/arch/s390/kvm/Kconfig @@ -18,7 +18,6 @@ if VIRTUALIZATION config KVM tristate "Kernel-based Virtual Machine (KVM) support" depends on HAVE_KVM && EXPERIMENTAL - select SCHED_NOTIFIERS select ANON_INODES select S390_SWITCH_AMODE ---help--- diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 23609bd..b391852 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM depends on HAVE_KVM # for device assignment: depends on PCI - select SCHED_NOTIFIERS select MMU_NOTIFIER select ANON_INODES select HAVE_KVM_IRQCHIP diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index d05fadc..bc0c1d4 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -74,9 +74,7 @@ void kvm_io_bus_unregister_dev(struct kvm *kvm, struct kvm_io_bus *bus, struct kvm_vcpu { struct kvm *kvm; -#ifdef CONFIG_SCHED_NOTIFIERS struct sched_notifier sched_notifier; -#endif int vcpu_id; struct mutex mutex; int cpu; diff --git a/include/linux/sched.h b/include/linux/sched.h index ae4fcfe..bc8be2d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1210,8 +1210,6 @@ struct sched_rt_entity { #endif }; -#ifdef CONFIG_SCHED_NOTIFIERS - struct sched_notifier; /** @@ -1255,8 +1253,6 @@ static inline void sched_notifier_init(struct sched_notifier *notifier, notifier->ops = ops; } -#endif /* CONFIG_SCHED_NOTIFIERS */ - struct rcu_node; struct task_struct { @@ -1280,10 +1276,8 @@ struct task_struct { struct sched_entity se; struct sched_rt_entity rt; -#ifdef CONFIG_SCHED_NOTIFIERS /* list of struct sched_notifier: */ struct hlist_head sched_notifiers; -#endif /* * fpu_counter contains the number of consecutive context switches diff --git a/init/Kconfig b/init/Kconfig index c7eef2b..0220aa7 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1206,7 +1206,3 @@ config STOP_MACHINE Need stop_machine() primitive. source "block/Kconfig" - -config SCHED_NOTIFIERS - bool - diff --git a/kernel/sched.c b/kernel/sched.c index 8fd3981..f7d9bb3 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -1433,8 +1433,6 @@ static inline void cpuacct_update_stats(struct task_struct *tsk, enum cpuacct_stat_index idx, cputime_t val) {} #endif -#ifdef CONFIG_SCHED_NOTIFIERS - #define fire_sched_notifiers(p, callback, args...) do { \ struct sched_notifier *__sn; \ struct hlist_node *__pos; \ @@ -1465,12 +1463,6 @@ void sched_notifier_unregister(struct sched_notifier *notifier) } EXPORT_SYMBOL_GPL(sched_notifier_unregister); -#else /* !CONFIG_SCHED_NOTIFIERS */ - -#define fire_sched_notifiers(p, callback, args...) do { } while (0) - -#endif /* CONFIG_SCHED_NOTIFIERS */ - static inline void inc_cpu_load(struct rq *rq, unsigned long load) { update_load_add(&rq->load, load); @@ -2592,10 +2584,7 @@ static void __sched_fork(struct task_struct *p) INIT_LIST_HEAD(&p->rt.run_list); p->se.on_rq = 0; INIT_LIST_HEAD(&p->se.group_node); - -#ifdef CONFIG_SCHED_NOTIFIERS INIT_HLIST_HEAD(&p->sched_notifiers); -#endif /* * We mark the process as running here, but have not actually @@ -9594,9 +9583,7 @@ void __init sched_init(void) set_load_weight(&init_task); -#ifdef CONFIG_SCHED_NOTIFIERS INIT_HLIST_HEAD(&init_task.sched_notifiers); -#endif #ifdef CONFIG_SMP open_softirq(SCHED_SOFTIRQ, run_rebalance_domains); -- 1.6.4.2
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