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Subject[PATCH 01/12] sched: drop @cpu argument from sched_in preempt notifier
Date
@cpu parameter is superflous.  Drop it.  This will help unifying
notifiers in sched.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Avi Kivity <avi@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>
---
include/linux/preempt.h | 3 +--
kernel/sched.c | 2 +-
virt/kvm/kvm_main.c | 4 ++--
3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 2e681d9..cd7d090 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -101,7 +101,6 @@ struct preempt_notifier;
* preempt_ops - notifiers called when a task is preempted and rescheduled
* @sched_in: we're about to be rescheduled:
* notifier: struct preempt_notifier for the task being scheduled
- * cpu: cpu we're scheduled on
* @sched_out: we've just been preempted
* notifier: struct preempt_notifier for the task being preempted
* next: the task that's kicking us out
@@ -112,7 +111,7 @@ struct preempt_notifier;
* difference is intentional and depended upon by its users.
*/
struct preempt_ops {
- void (*sched_in)(struct preempt_notifier *notifier, int cpu);
+ void (*sched_in)(struct preempt_notifier *notifier);
void (*sched_out)(struct preempt_notifier *notifier,
struct task_struct *next);
};
diff --git a/kernel/sched.c b/kernel/sched.c
index 6af210a..724f0e4 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2718,7 +2718,7 @@ static void fire_sched_in_preempt_notifiers(struct task_struct *curr)
struct hlist_node *node;

hlist_for_each_entry(notifier, node, &curr->preempt_notifiers, link)
- notifier->ops->sched_in(notifier, raw_smp_processor_id());
+ notifier->ops->sched_in(notifier);
}

static void
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c82ae24..2c06489 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2164,11 +2164,11 @@ struct kvm_vcpu *preempt_notifier_to_vcpu(struct preempt_notifier *pn)
return container_of(pn, struct kvm_vcpu, preempt_notifier);
}

-static void kvm_sched_in(struct preempt_notifier *pn, int cpu)
+static void kvm_sched_in(struct preempt_notifier *pn)
{
struct kvm_vcpu *vcpu = preempt_notifier_to_vcpu(pn);

- kvm_arch_vcpu_load(vcpu, cpu);
+ kvm_arch_vcpu_load(vcpu, raw_smp_processor_id());
}

static void kvm_sched_out(struct preempt_notifier *pn,
--
1.6.4.2


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