diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c index 55b65fc04b65..e36fede7f74c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c @@ -129,13 +129,25 @@ static const struct mmu_interval_notifier_ops amdgpu_hmm_hsa_ops = { */ int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr) { + int r; + if (bo->kfd_bo) - return mmu_interval_notifier_insert(&bo->notifier, current->mm, + r = mmu_interval_notifier_insert(&bo->notifier, current->mm, addr, amdgpu_bo_size(bo), &amdgpu_hmm_hsa_ops); - return mmu_interval_notifier_insert(&bo->notifier, current->mm, addr, - amdgpu_bo_size(bo), - &amdgpu_hmm_gfx_ops); + else + r = mmu_interval_notifier_insert(&bo->notifier, current->mm, addr, + amdgpu_bo_size(bo), + &amdgpu_hmm_gfx_ops); + if (r) + /* + * Make sure amdgpu_hmm_unregister() doesn't call + * mmu_interval_notifier_remove() when the notifier isn't properly + * initialized. + */ + bo->notifier.mm = NULL; + + return r; } /** @@ -190,20 +202,12 @@ int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier, pr_debug("hmm range: start = 0x%lx, end = 0x%lx", hmm_range->start, hmm_range->end); - /* Assuming 64MB takes maximum 1 second to fault page address */ - timeout = max((hmm_range->end - hmm_range->start) >> 26, 1UL); - timeout *= HMM_RANGE_DEFAULT_TIMEOUT; - timeout = jiffies + msecs_to_jiffies(timeout); + timeout = jiffies + msecs_to_jiffies(HMM_RANGE_DEFAULT_TIMEOUT); retry: hmm_range->notifier_seq = mmu_interval_read_begin(notifier); r = hmm_range_fault(hmm_range); if (unlikely(r)) { - schedule(); - /* - * FIXME: This timeout should encompass the retry from - * mmu_interval_read_retry() as well. - */ if (r == -EBUSY && !time_after(jiffies, timeout)) goto retry; goto out_free_pfns; @@ -235,6 +239,8 @@ out_free_pfns: out_free_range: kfree(hmm_range); + if (r == -EBUSY) + r = -EAGAIN; return r; } |