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| author | Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> | 2017-05-15 15:09:15 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-06-09 11:29:46 -0400 |
| commit | a6583af4ae1c4afa755d8d4a4e7768dd36176395 (patch) | |
| tree | 823acf78c3721a78a31972ba8f02472f1e67171c /drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | |
| parent | 9a4b7d4c769e7513dec8f441de1f521ec4ead4b6 (diff) | |
drm/amdgpu: Add amdgpu_sync_wait
v2: Add intr option
Helper function useful for CPU update of VM page tables. Also useful if
kernel have to synchronously wait till VM page tables are updated.
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c index ed814e6d0207..a6899180b265 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c @@ -298,6 +298,25 @@ struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync) return NULL; } +int amdgpu_sync_wait(struct amdgpu_sync *sync, bool intr) +{ + struct amdgpu_sync_entry *e; + struct hlist_node *tmp; + int i, r; + + hash_for_each_safe(sync->fences, i, tmp, e, node) { + r = dma_fence_wait(e->fence, intr); + if (r) + return r; + + hash_del(&e->node); + dma_fence_put(e->fence); + kmem_cache_free(amdgpu_sync_slab, e); + } + + return 0; +} + /** * amdgpu_sync_free - free the sync object * |