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dma-buf: drop the _rcu postfix on function names v3

Browse Source 
The functions can be called both in _rcu context as well
as while holding the lock.

v2: add some kerneldoc as suggested by Daniel
v3: fix indentation

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210602111714.212426-7-christian.koenig@amd.com
This commit is contained in:
Christian König 2021-06-02 13:01:15 +02:00
parent 6b41323a26
commit d3fae3b3da
31 changed files with 84 additions and 103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/dma-buf/dma-buf.c
View File

@ -1147,8 +1147,7 @@ static int __dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
long ret;
/* Wait on any implicit rendering fences */
ret = dma_resv_wait_timeout_rcu(resv, write, true,
MAX_SCHEDULE_TIMEOUT);
ret = dma_resv_wait_timeout(resv, write, true, MAX_SCHEDULE_TIMEOUT);
if (ret < 0)
return ret;

32
drivers/dma-buf/dma-resv.c
View File

@ -396,7 +396,7 @@ retry:
EXPORT_SYMBOL(dma_resv_copy_fences);
/**
* dma_resv_get_fences_rcu - Get an object's shared and exclusive
* dma_resv_get_fences - Get an object's shared and exclusive
* fences without update side lock held
* @obj: the reservation object
* @pfence_excl: the returned exclusive fence (or NULL)
@ -408,10 +408,9 @@ EXPORT_SYMBOL(dma_resv_copy_fences);
* exclusive fence is not specified the fence is put into the array of the
* shared fences as well. Returns either zero or -ENOMEM.
*/
int dma_resv_get_fences_rcu(struct dma_resv *obj,
struct dma_fence **pfence_excl,
unsigned int *pshared_count,
struct dma_fence ***pshared)
int dma_resv_get_fences(struct dma_resv *obj, struct dma_fence **pfence_excl,
unsigned int *pshared_count,
struct dma_fence ***pshared)
{
struct dma_fence **shared = NULL;
struct dma_fence *fence_excl;
@ -494,23 +493,24 @@ unlock:
*pshared = shared;
return ret;
}
EXPORT_SYMBOL_GPL(dma_resv_get_fences_rcu);
EXPORT_SYMBOL_GPL(dma_resv_get_fences);
/**
* dma_resv_wait_timeout_rcu - Wait on reservation's objects
* dma_resv_wait_timeout - Wait on reservation's objects
* shared and/or exclusive fences.
* @obj: the reservation object
* @wait_all: if true, wait on all fences, else wait on just exclusive fence
* @intr: if true, do interruptible wait
* @timeout: timeout value in jiffies or zero to return immediately
*
* Callers are not required to hold specific locks, but maybe hold
* dma_resv_lock() already
* RETURNS
* Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or
* greater than zer on success.
*/
long dma_resv_wait_timeout_rcu(struct dma_resv *obj,
bool wait_all, bool intr,
unsigned long timeout)
long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr,
unsigned long timeout)
{
long ret = timeout ? timeout : 1;
unsigned int seq, shared_count;
@ -582,7 +582,7 @@ unlock_retry:
rcu_read_unlock();
goto retry;
}
EXPORT_SYMBOL_GPL(dma_resv_wait_timeout_rcu);
EXPORT_SYMBOL_GPL(dma_resv_wait_timeout);
static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence)
@ -602,16 +602,18 @@ static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence)
}
/**
* dma_resv_test_signaled_rcu - Test if a reservation object's
* fences have been signaled.
* dma_resv_test_signaled - Test if a reservation object's fences have been
* signaled.
* @obj: the reservation object
* @test_all: if true, test all fences, otherwise only test the exclusive
* fence
*
* Callers are not required to hold specific locks, but maybe hold
* dma_resv_lock() already
* RETURNS
* true if all fences signaled, else false
*/
bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all)
bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all)
{
unsigned int seq, shared_count;
int ret;
@ -660,7 +662,7 @@ retry:
rcu_read_unlock();
return ret;
}
EXPORT_SYMBOL_GPL(dma_resv_test_signaled_rcu);
EXPORT_SYMBOL_GPL(dma_resv_test_signaled);
#if IS_ENABLED(CONFIG_LOCKDEP)
static int __init dma_resv_lockdep(void)

5
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
View File

@ -203,9 +203,8 @@ int amdgpu_display_crtc_page_flip_target(struct drm_crtc *crtc,
goto unpin;
}
r = dma_resv_get_fences_rcu(new_abo->tbo.base.resv, &work->excl,
&work->shared_count,
&work->shared);
r = dma_resv_get_fences(new_abo->tbo.base.resv, &work->excl,
&work->shared_count, &work->shared);
if (unlikely(r != 0)) {
DRM_ERROR("failed to get fences for buffer\n");
goto unpin;

2
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
View File

@ -52,7 +52,7 @@ __dma_resv_make_exclusive(struct dma_resv *obj)
if (!dma_resv_shared_list(obj)) /* no shared fences to convert */
return 0;
r = dma_resv_get_fences_rcu(obj, NULL, &count, &fences);
r = dma_resv_get_fences(obj, NULL, &count, &fences);
if (r)
return r;

3
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
View File

@ -526,8 +526,7 @@ int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
}
robj = gem_to_amdgpu_bo(gobj);
ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true,
timeout);
ret = dma_resv_wait_timeout(robj->tbo.base.resv, true, true, timeout);
/* ret == 0 means not signaled,
* ret > 0 means signaled

5
drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
View File

@ -112,7 +112,7 @@ void amdgpu_pasid_free_delayed(struct dma_resv *resv,
unsigned count;
int r;
r = dma_resv_get_fences_rcu(resv, NULL, &count, &fences);
r = dma_resv_get_fences(resv, NULL, &count, &fences);
if (r)
goto fallback;
@ -156,8 +156,7 @@ fallback:
/* Not enough memory for the delayed delete, as last resort
* block for all the fences to complete.
*/
dma_resv_wait_timeout_rcu(resv, true, false,
MAX_SCHEDULE_TIMEOUT);
dma_resv_wait_timeout(resv, true, false, MAX_SCHEDULE_TIMEOUT);
amdgpu_pasid_free(pasid);
}

4
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
View File

@ -75,8 +75,8 @@ static bool amdgpu_mn_invalidate_gfx(struct mmu_interval_notifier *mni,
mmu_interval_set_seq(mni, cur_seq);
r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv, true, false,
MAX_SCHEDULE_TIMEOUT);
r = dma_resv_wait_timeout(bo->tbo.base.resv, true, false,
MAX_SCHEDULE_TIMEOUT);
mutex_unlock(&adev->notifier_lock);
if (r <= 0)
DRM_ERROR("(%ld) failed to wait for user bo\n", r);

4
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
View File

@ -756,8 +756,8 @@ int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
return 0;
}
r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv, false, false,
MAX_SCHEDULE_TIMEOUT);
r = dma_resv_wait_timeout(bo->tbo.base.resv, false, false,
MAX_SCHEDULE_TIMEOUT);
if (r < 0)
return r;

5
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
View File

@ -1126,9 +1126,8 @@ static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
ib->length_dw = 16;
if (direct) {
r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv,
true, false,
msecs_to_jiffies(10));
r = dma_resv_wait_timeout(bo->tbo.base.resv, true, false,
msecs_to_jiffies(10));
if (r == 0)
r = -ETIMEDOUT;
if (r < 0)

11
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -2022,13 +2022,12 @@ static void amdgpu_vm_prt_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
unsigned i, shared_count;
int r;
r = dma_resv_get_fences_rcu(resv, &excl,
&shared_count, &shared);
r = dma_resv_get_fences(resv, &excl, &shared_count, &shared);
if (r) {
/* Not enough memory to grab the fence list, as last resort
* block for all the fences to complete.
*/
dma_resv_wait_timeout_rcu(resv, true, false,
dma_resv_wait_timeout(resv, true, false,
MAX_SCHEDULE_TIMEOUT);
return;
}
@ -2640,7 +2639,7 @@ bool amdgpu_vm_evictable(struct amdgpu_bo *bo)
return true;
/* Don't evict VM page tables while they are busy */
if (!dma_resv_test_signaled_rcu(bo->tbo.base.resv, true))
if (!dma_resv_test_signaled(bo->tbo.base.resv, true))
return false;
/* Try to block ongoing updates */
@ -2820,8 +2819,8 @@ void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint32_t min_vm_size,
*/
long amdgpu_vm_wait_idle(struct amdgpu_vm *vm, long timeout)
{
timeout = dma_resv_wait_timeout_rcu(vm->root.base.bo->tbo.base.resv,
true, true, timeout);
timeout = dma_resv_wait_timeout(vm->root.base.bo->tbo.base.resv, true,
true, timeout);
if (timeout <= 0)
return timeout;

5
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -8400,9 +8400,8 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
* deadlock during GPU reset when this fence will not signal
* but we hold reservation lock for the BO.
*/
r = dma_resv_wait_timeout_rcu(abo->tbo.base.resv, true,
false,
msecs_to_jiffies(5000));
r = dma_resv_wait_timeout(abo->tbo.base.resv, true, false,
msecs_to_jiffies(5000));
if (unlikely(r <= 0))
DRM_ERROR("Waiting for fences timed out!");

5
drivers/gpu/drm/drm_gem.c
View File

@ -770,8 +770,7 @@ long drm_gem_dma_resv_wait(struct drm_file *filep, u32 handle,
return -EINVAL;
}
ret = dma_resv_wait_timeout_rcu(obj->resv, wait_all,
true, timeout);
ret = dma_resv_wait_timeout(obj->resv, wait_all, true, timeout);
if (ret == 0)
ret = -ETIME;
else if (ret > 0)
@ -1380,7 +1379,7 @@ int drm_gem_fence_array_add_implicit(struct xarray *fence_array,
return drm_gem_fence_array_add(fence_array, fence);
}
ret = dma_resv_get_fences_rcu(obj->resv, NULL,
ret = dma_resv_get_fences(obj->resv, NULL,
&fence_count, &fences);
if (ret || !fence_count)
return ret;

6
drivers/gpu/drm/etnaviv/etnaviv_gem.c
View File

@ -390,14 +390,12 @@ int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
}
if (op & ETNA_PREP_NOSYNC) {
if (!dma_resv_test_signaled_rcu(obj->resv,
write))
if (!dma_resv_test_signaled(obj->resv, write))
return -EBUSY;
} else {
unsigned long remain = etnaviv_timeout_to_jiffies(timeout);
ret = dma_resv_wait_timeout_rcu(obj->resv,
write, true, remain);
ret = dma_resv_wait_timeout(obj->resv, write, true, remain);
if (ret <= 0)
return ret == 0 ? -ETIMEDOUT : ret;
}

6
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
View File

@ -189,9 +189,9 @@ static int submit_fence_sync(struct etnaviv_gem_submit *submit)
continue;
if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
ret = dma_resv_get_fences_rcu(robj, &bo->excl,
&bo->nr_shared,
&bo->shared);
ret = dma_resv_get_fences(robj, &bo->excl,
&bo->nr_shared,
&bo->shared);
if (ret)
return ret;
} else {

2
drivers/gpu/drm/i915/dma_resv_utils.c
View File

@ -10,7 +10,7 @@
void dma_resv_prune(struct dma_resv *resv)
{
if (dma_resv_trylock(resv)) {
if (dma_resv_test_signaled_rcu(resv, true))
if (dma_resv_test_signaled(resv, true))
dma_resv_add_excl_fence(resv, NULL);
dma_resv_unlock(resv);
}

2
drivers/gpu/drm/i915/gem/i915_gem_busy.c
View File

@ -105,7 +105,7 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
* Alternatively, we can trade that extra information on read/write
* activity with
* args->busy =
* !dma_resv_test_signaled_rcu(obj->resv, true);
* !dma_resv_test_signaled(obj->resv, true);
* to report the overall busyness. This is what the wait-ioctl does.
*
*/

2
drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
View File

@ -1481,7 +1481,7 @@ static inline bool use_reloc_gpu(struct i915_vma *vma)
if (DBG_FORCE_RELOC)
return false;
return !dma_resv_test_signaled_rcu(vma->resv, true);
return !dma_resv_test_signaled(vma->resv, true);
}
static unsigned long vma_phys_addr(struct i915_vma *vma, u32 offset)

4
drivers/gpu/drm/i915/gem/i915_gem_userptr.c
View File

@ -85,8 +85,8 @@ static bool i915_gem_userptr_invalidate(struct mmu_interval_notifier *mni,
return true;
/* we will unbind on next submission, still have userptr pins */
r = dma_resv_wait_timeout_rcu(obj->base.resv, true, false,
MAX_SCHEDULE_TIMEOUT);
r = dma_resv_wait_timeout(obj->base.resv, true, false,
MAX_SCHEDULE_TIMEOUT);
if (r <= 0)
drm_err(&i915->drm, "(%ld) failed to wait for idle\n", r);

6
drivers/gpu/drm/i915/gem/i915_gem_wait.c
View File

@ -45,7 +45,7 @@ i915_gem_object_wait_reservation(struct dma_resv *resv,
unsigned int count, i;
int ret;
ret = dma_resv_get_fences_rcu(resv, &excl, &count, &shared);
ret = dma_resv_get_fences(resv, &excl, &count, &shared);
if (ret)
return ret;
@ -158,8 +158,8 @@ i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
unsigned int count, i;
int ret;
ret = dma_resv_get_fences_rcu(obj->base.resv,
&excl, &count, &shared);
ret = dma_resv_get_fences(obj->base.resv, &excl, &count,
&shared);
if (ret)
return ret;

4
drivers/gpu/drm/i915/i915_request.c
View File

@ -1594,8 +1594,8 @@ i915_request_await_object(struct i915_request *to,
struct dma_fence **shared;
unsigned int count, i;
ret = dma_resv_get_fences_rcu(obj->base.resv,
&excl, &count, &shared);
ret = dma_resv_get_fences(obj->base.resv, &excl, &count,
&shared);
if (ret)
return ret;

2
drivers/gpu/drm/i915/i915_sw_fence.c
View File

@ -582,7 +582,7 @@ int i915_sw_fence_await_reservation(struct i915_sw_fence *fence,
struct dma_fence **shared;
unsigned int count, i;
ret = dma_resv_get_fences_rcu(resv, &excl, &count, &shared);
ret = dma_resv_get_fences(resv, &excl, &count, &shared);
if (ret)
return ret;

3
drivers/gpu/drm/msm/msm_gem.c
View File

@ -915,8 +915,7 @@ int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout)
op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout);
long ret;
ret = dma_resv_wait_timeout_rcu(obj->resv, write,
true, remain);
ret = dma_resv_wait_timeout(obj->resv, write, true, remain);
if (ret == 0)
return remain == 0 ? -EBUSY : -ETIMEDOUT;
else if (ret < 0)

4
drivers/gpu/drm/nouveau/nouveau_gem.c
View File

@ -964,8 +964,8 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
return -ENOENT;
nvbo = nouveau_gem_object(gem);
lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
no_wait ? 0 : 30 * HZ);
lret = dma_resv_wait_timeout(nvbo->bo.base.resv, write, true,
no_wait ? 0 : 30 * HZ);
if (!lret)
ret = -EBUSY;
else if (lret > 0)

3
drivers/gpu/drm/panfrost/panfrost_drv.c
View File

@ -312,8 +312,7 @@ panfrost_ioctl_wait_bo(struct drm_device *dev, void *data,
if (!gem_obj)
return -ENOENT;
ret = dma_resv_wait_timeout_rcu(gem_obj->resv, true,
true, timeout);
ret = dma_resv_wait_timeout(gem_obj->resv, true, true, timeout);
if (!ret)
ret = timeout ? -ETIMEDOUT : -EBUSY;

6
drivers/gpu/drm/radeon/radeon_gem.c
View File

@ -161,7 +161,7 @@ static int radeon_gem_set_domain(struct drm_gem_object *gobj,
}
if (domain == RADEON_GEM_DOMAIN_CPU) {
/* Asking for cpu access wait for object idle */
r = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true, 30 * HZ);
r = dma_resv_wait_timeout(robj->tbo.base.resv, true, true, 30 * HZ);
if (!r)
r = -EBUSY;
@ -523,7 +523,7 @@ int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
}
robj = gem_to_radeon_bo(gobj);
r = dma_resv_test_signaled_rcu(robj->tbo.base.resv, true);
r = dma_resv_test_signaled(robj->tbo.base.resv, true);
if (r == 0)
r = -EBUSY;
else
@ -552,7 +552,7 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
}
robj = gem_to_radeon_bo(gobj);
ret = dma_resv_wait_timeout_rcu(robj->tbo.base.resv, true, true, 30 * HZ);
ret = dma_resv_wait_timeout(robj->tbo.base.resv, true, true, 30 * HZ);
if (ret == 0)
r = -EBUSY;
else if (ret < 0)

4
drivers/gpu/drm/radeon/radeon_mn.c
View File

@ -66,8 +66,8 @@ static bool radeon_mn_invalidate(struct mmu_interval_notifier *mn,
return true;
}
r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv, true, false,
MAX_SCHEDULE_TIMEOUT);
r = dma_resv_wait_timeout(bo->tbo.base.resv, true, false,
MAX_SCHEDULE_TIMEOUT);
if (r <= 0)
DRM_ERROR("(%ld) failed to wait for user bo\n", r);

18
drivers/gpu/drm/ttm/ttm_bo.c
View File

@ -296,7 +296,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo,
struct dma_resv *resv = &bo->base._resv;
int ret;
if (dma_resv_test_signaled_rcu(resv, true))
if (dma_resv_test_signaled(resv, true))
ret = 0;
else
ret = -EBUSY;
@ -308,8 +308,8 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo,
dma_resv_unlock(bo->base.resv);
spin_unlock(&bo->bdev->lru_lock);
lret = dma_resv_wait_timeout_rcu(resv, true, interruptible,
30 * HZ);
lret = dma_resv_wait_timeout(resv, true, interruptible,
30 * HZ);
if (lret < 0)
return lret;
@ -411,8 +411,8 @@ static void ttm_bo_release(struct kref *kref)
/* Last resort, if we fail to allocate memory for the
* fences block for the BO to become idle
*/
dma_resv_wait_timeout_rcu(bo->base.resv, true, false,
30 * HZ);
dma_resv_wait_timeout(bo->base.resv, true, false,
30 * HZ);
}
if (bo->bdev->funcs->release_notify)
@ -422,7 +422,7 @@ static void ttm_bo_release(struct kref *kref)
ttm_mem_io_free(bdev, bo->resource);
}
if (!dma_resv_test_signaled_rcu(bo->base.resv, true) ||
if (!dma_resv_test_signaled(bo->base.resv, true) ||
!dma_resv_trylock(bo->base.resv)) {
/* The BO is not idle, resurrect it for delayed destroy */
ttm_bo_flush_all_fences(bo);
@ -1094,14 +1094,14 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
long timeout = 15 * HZ;
if (no_wait) {
if (dma_resv_test_signaled_rcu(bo->base.resv, true))
if (dma_resv_test_signaled(bo->base.resv, true))
return 0;
else
return -EBUSY;
}
timeout = dma_resv_wait_timeout_rcu(bo->base.resv, true,
interruptible, timeout);
timeout = dma_resv_wait_timeout(bo->base.resv, true, interruptible,
timeout);
if (timeout < 0)
return timeout;

3
drivers/gpu/drm/vgem/vgem_fence.c
View File

@ -151,8 +151,7 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
/* Check for a conflicting fence */
resv = obj->resv;
if (!dma_resv_test_signaled_rcu(resv,
arg->flags & VGEM_FENCE_WRITE)) {
if (!dma_resv_test_signaled(resv, arg->flags & VGEM_FENCE_WRITE)) {
ret = -EBUSY;
goto err_fence;
}

5
drivers/gpu/drm/virtio/virtgpu_ioctl.c
View File

@ -451,10 +451,9 @@ static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
if (args->flags & VIRTGPU_WAIT_NOWAIT) {
ret = dma_resv_test_signaled_rcu(obj->resv, true);
ret = dma_resv_test_signaled(obj->resv, true);
} else {
ret = dma_resv_wait_timeout_rcu(obj->resv, true, true,
timeout);
ret = dma_resv_wait_timeout(obj->resv, true, true, timeout);
}
if (ret == 0)
ret = -EBUSY;

6
drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
View File

@ -743,9 +743,9 @@ static int vmw_user_bo_synccpu_grab(struct vmw_user_buffer_object *user_bo,
if (flags & drm_vmw_synccpu_allow_cs) {
long lret;
lret = dma_resv_wait_timeout_rcu
(bo->base.resv, true, true,
nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
lret = dma_resv_wait_timeout(bo->base.resv, true, true,
nonblock ? 0 :
MAX_SCHEDULE_TIMEOUT);
if (!lret)
return -EBUSY;
else if (lret < 0)

17
include/linux/dma-resv.h
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@ -271,19 +271,12 @@ void dma_resv_init(struct dma_resv *obj);
void dma_resv_fini(struct dma_resv *obj);
int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences);
void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence);
void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence);
int dma_resv_get_fences_rcu(struct dma_resv *obj,
struct dma_fence **pfence_excl,
unsigned *pshared_count,
struct dma_fence ***pshared);
int dma_resv_get_fences(struct dma_resv *obj, struct dma_fence **pfence_excl,
unsigned *pshared_count, struct dma_fence ***pshared);
int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);
long dma_resv_wait_timeout_rcu(struct dma_resv *obj, bool wait_all, bool intr,
unsigned long timeout);
bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all);
long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr,
unsigned long timeout);
bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all);
#endif /* _LINUX_RESERVATION_H */