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drm/amdkfd: use mmu_notifier_put

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The sequence of mmu_notifier_unregister_no_release(),
mmu_notifier_call_srcu() is identical to mmu_notifier_put() with the
free_notifier callback.

As this is the last user of those APIs, converting it means we can drop
them.

Link: https://lore.kernel.org/r/20190806231548.25242-11-jgg@ziepe.ca
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2019-08-06 20:15:47 -03:00
parent 0029cab314
commit 471f390205
2 changed files with 4 additions and 9 deletions
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3
drivers/gpu/drm/amd/amdkfd/kfd_priv.h
View file

@ -686,9 +686,6 @@ struct kfd_process {
/* We want to receive a notification when the mm_struct is destroyed */
struct mmu_notifier mmu_notifier;
/* Use for delayed freeing of kfd_process structure */
struct rcu_head rcu;
unsigned int pasid;
unsigned int doorbell_index;

10
drivers/gpu/drm/amd/amdkfd/kfd_process.c
View file

@ -486,11 +486,9 @@ static void kfd_process_ref_release(struct kref *ref)
queue_work(kfd_process_wq, &p->release_work);
}
static void kfd_process_destroy_delayed(struct rcu_head *rcu)
static void kfd_process_free_notifier(struct mmu_notifier *mn)
{
struct kfd_process *p = container_of(rcu, struct kfd_process, rcu);
kfd_unref_process(p);
kfd_unref_process(container_of(mn, struct kfd_process, mmu_notifier));
}
static void kfd_process_notifier_release(struct mmu_notifier *mn,
@ -542,12 +540,12 @@ static void kfd_process_notifier_release(struct mmu_notifier *mn,
mutex_unlock(&p->mutex);
mmu_notifier_unregister_no_release(&p->mmu_notifier, mm);
mmu_notifier_call_srcu(&p->rcu, &kfd_process_destroy_delayed);
mmu_notifier_put(&p->mmu_notifier);
}
static const struct mmu_notifier_ops kfd_process_mmu_notifier_ops = {
.release = kfd_process_notifier_release,
.free_notifier = kfd_process_free_notifier,
};
static int kfd_process_init_cwsr_apu(struct kfd_process *p, struct file *filep)