[PATCH 2/7] dma-buf: Rename dma_resv helpers from _rcu to _unlocked (v2)
Jason Ekstrand
jason at jlekstrand.net
Tue May 25 21:17:48 UTC 2021
None of these helpers actually leak any RCU details to the caller. They
all assume you have a genuine reference, take the RCU read lock, and
retry if needed. Naming them with an _rcu is likely to cause callers
more panic than needed.
v2 (Jason Ekstrand):
- Fix function argument indentation
Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
Suggested-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Christian König <christian.koenig at amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Maxime Ripard <mripard at kernel.org>
Cc: Thomas Zimmermann <tzimmermann at suse.de>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: Rob Clark <robdclark at gmail.com>
Cc: Sean Paul <sean at poorly.run>
Cc: Huang Rui <ray.huang at amd.com>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: VMware Graphics <linux-graphics-maintainer at vmware.com>
---
drivers/dma-buf/dma-buf.c | 4 +--
drivers/dma-buf/dma-resv.c | 28 +++++++++----------
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 6 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c | 6 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c | 4 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 4 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 6 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 14 +++++-----
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 ++--
drivers/gpu/drm/drm_gem.c | 10 +++----
drivers/gpu/drm/drm_gem_atomic_helper.c | 2 +-
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 7 ++---
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 8 +++---
drivers/gpu/drm/i915/display/intel_display.c | 2 +-
drivers/gpu/drm/i915/dma_resv_utils.c | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_busy.c | 2 +-
.../gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_object.h | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 4 +--
drivers/gpu/drm/i915/gem/i915_gem_wait.c | 10 +++----
drivers/gpu/drm/i915/i915_request.c | 6 ++--
drivers/gpu/drm/i915/i915_sw_fence.c | 4 +--
drivers/gpu/drm/msm/msm_gem.c | 3 +-
drivers/gpu/drm/nouveau/dispnv50/wndw.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_gem.c | 4 +--
drivers/gpu/drm/panfrost/panfrost_drv.c | 4 +--
drivers/gpu/drm/panfrost/panfrost_job.c | 2 +-
drivers/gpu/drm/radeon/radeon_gem.c | 6 ++--
drivers/gpu/drm/radeon/radeon_mn.c | 4 +--
drivers/gpu/drm/ttm/ttm_bo.c | 18 ++++++------
drivers/gpu/drm/vgem/vgem_fence.c | 4 +--
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 6 ++--
drivers/gpu/drm/vmwgfx/vmwgfx_bo.c | 2 +-
include/linux/dma-resv.h | 18 ++++++------
36 files changed, 108 insertions(+), 110 deletions(-)
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index f264b70c383eb..ed6451d55d663 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -1147,8 +1147,8 @@ 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_unlocked(resv, write, true,
+ MAX_SCHEDULE_TIMEOUT);
if (ret < 0)
return ret;
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 6ddbeb5dfbf65..d6f1ed4cd4d55 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -417,7 +417,7 @@ int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src)
EXPORT_SYMBOL(dma_resv_copy_fences);
/**
- * dma_resv_get_fences_rcu - Get an object's shared and exclusive
+ * dma_resv_get_fences_unlocked - 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)
@@ -429,10 +429,10 @@ 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 *pshared_count,
- struct dma_fence ***pshared)
+int dma_resv_get_fences_unlocked(struct dma_resv *obj,
+ struct dma_fence **pfence_excl,
+ unsigned *pshared_count,
+ struct dma_fence ***pshared)
{
struct dma_fence **shared = NULL;
struct dma_fence *fence_excl;
@@ -515,10 +515,10 @@ int dma_resv_get_fences_rcu(struct dma_resv *obj,
*pshared = shared;
return ret;
}
-EXPORT_SYMBOL_GPL(dma_resv_get_fences_rcu);
+EXPORT_SYMBOL_GPL(dma_resv_get_fences_unlocked);
/**
- * dma_resv_wait_timeout_rcu - Wait on reservation's objects
+ * dma_resv_wait_timeout_unlocked - 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
@@ -529,9 +529,9 @@ EXPORT_SYMBOL_GPL(dma_resv_get_fences_rcu);
* 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_unlocked(struct dma_resv *obj,
+ bool wait_all, bool intr,
+ unsigned long timeout)
{
struct dma_fence *fence;
unsigned seq, shared_count;
@@ -602,7 +602,7 @@ long dma_resv_wait_timeout_rcu(struct dma_resv *obj,
rcu_read_unlock();
goto retry;
}
-EXPORT_SYMBOL_GPL(dma_resv_wait_timeout_rcu);
+EXPORT_SYMBOL_GPL(dma_resv_wait_timeout_unlocked);
static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence)
@@ -622,7 +622,7 @@ static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence)
}
/**
- * dma_resv_test_signaled_rcu - Test if a reservation object's
+ * dma_resv_test_signaled_unlocked - 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
@@ -631,7 +631,7 @@ static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence)
* 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_unlocked(struct dma_resv *obj, bool test_all)
{
unsigned seq, shared_count;
int ret;
@@ -680,4 +680,4 @@ bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all)
rcu_read_unlock();
return ret;
}
-EXPORT_SYMBOL_GPL(dma_resv_test_signaled_rcu);
+EXPORT_SYMBOL_GPL(dma_resv_test_signaled_unlocked);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 8a1fb8b6606e5..b8e24f199be9a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -203,9 +203,9 @@ 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_unlocked(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;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index baa980a477d94..0d0319bc51577 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -98,7 +98,7 @@ __dma_resv_make_exclusive(struct dma_resv *obj)
if (!dma_resv_get_list(obj)) /* no shared fences to convert */
return 0;
- r = dma_resv_get_fences_rcu(obj, NULL, &count, &fences);
+ r = dma_resv_get_fences_unlocked(obj, NULL, &count, &fences);
if (r)
return r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 18974bd081f00..8e2996d6ba3ad 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -471,8 +471,8 @@ 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_unlocked(robj->tbo.base.resv, true, true,
+ timeout);
/* ret == 0 means not signaled,
* ret > 0 means signaled
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
index b4971e90b98cf..38e1b32dd2cef 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
@@ -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_unlocked(resv, NULL, &count, &fences);
if (r)
goto fallback;
@@ -156,8 +156,8 @@ void amdgpu_pasid_free_delayed(struct dma_resv *resv,
/* 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_unlocked(resv, true, false,
+ MAX_SCHEDULE_TIMEOUT);
amdgpu_pasid_free(pasid);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
index 828b5167ff128..0319c8b547c48 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
@@ -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_unlocked(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);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 0adffcace3263..de1c7c5501683 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -791,8 +791,8 @@ 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_unlocked(bo->tbo.base.resv, false, false,
+ MAX_SCHEDULE_TIMEOUT);
if (r < 0)
return r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index c6dbc08016045..4a2196404fb69 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -1115,9 +1115,9 @@ 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_unlocked(bo->tbo.base.resv,
+ true, false,
+ msecs_to_jiffies(10));
if (r == 0)
r = -ETIMEDOUT;
if (r < 0)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 4a3e3f72e1277..7ba1c537d6584 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2007,14 +2007,14 @@ 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_unlocked(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,
- MAX_SCHEDULE_TIMEOUT);
+ dma_resv_wait_timeout_unlocked(resv, true, false,
+ MAX_SCHEDULE_TIMEOUT);
return;
}
@@ -2625,7 +2625,7 @@ 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_unlocked(bo->tbo.base.resv, true))
return false;
/* Try to block ongoing updates */
@@ -2805,8 +2805,8 @@ 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_unlocked(vm->root.base.bo->tbo.base.resv,
+ true, true, timeout);
if (timeout <= 0)
return timeout;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 9ca517b658546..0121d2817fa26 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8276,9 +8276,9 @@ 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_unlocked(abo->tbo.base.resv, true,
+ false,
+ msecs_to_jiffies(5000));
if (unlikely(r <= 0))
DRM_ERROR("Waiting for fences timed out!");
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 9989425e9875a..1241a421b9e81 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -770,8 +770,8 @@ 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_unlocked(obj->resv, wait_all,
+ true, timeout);
if (ret == 0)
ret = -ETIME;
else if (ret > 0)
@@ -1375,13 +1375,13 @@ int drm_gem_fence_array_add_implicit(struct xarray *fence_array,
if (!write) {
struct dma_fence *fence =
- dma_resv_get_excl_rcu(obj->resv);
+ dma_resv_get_excl_unlocked(obj->resv);
return drm_gem_fence_array_add(fence_array, fence);
}
- ret = dma_resv_get_fences_rcu(obj->resv, NULL,
- &fence_count, &fences);
+ ret = dma_resv_get_fences_unlocked(obj->resv, NULL,
+ &fence_count, &fences);
if (ret || !fence_count)
return ret;
diff --git a/drivers/gpu/drm/drm_gem_atomic_helper.c b/drivers/gpu/drm/drm_gem_atomic_helper.c
index a005c5a0ba46a..a27135084ae5c 100644
--- a/drivers/gpu/drm/drm_gem_atomic_helper.c
+++ b/drivers/gpu/drm/drm_gem_atomic_helper.c
@@ -147,7 +147,7 @@ int drm_gem_plane_helper_prepare_fb(struct drm_plane *plane, struct drm_plane_st
return 0;
obj = drm_gem_fb_get_obj(state->fb, 0);
- fence = dma_resv_get_excl_rcu(obj->resv);
+ fence = dma_resv_get_excl_unlocked(obj->resv);
drm_atomic_set_fence_for_plane(state, fence);
return 0;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index db69f19ab5bca..4e6f5346e84e4 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -390,14 +390,13 @@ 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_unlocked(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_unlocked(obj->resv,
+ write, true, remain);
if (ret <= 0)
return ret == 0 ? -ETIMEDOUT : ret;
}
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index d05c359945799..6617fada4595d 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -189,13 +189,13 @@ 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_unlocked(robj, &bo->excl,
+ &bo->nr_shared,
+ &bo->shared);
if (ret)
return ret;
} else {
- bo->excl = dma_resv_get_excl_rcu(robj);
+ bo->excl = dma_resv_get_excl_unlocked(robj);
}
}
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 422b59ebf6dce..5f0b85a102159 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -11040,7 +11040,7 @@ intel_prepare_plane_fb(struct drm_plane *_plane,
if (ret < 0)
goto unpin_fb;
- fence = dma_resv_get_excl_rcu(obj->base.resv);
+ fence = dma_resv_get_excl_unlocked(obj->base.resv);
if (fence) {
add_rps_boost_after_vblank(new_plane_state->hw.crtc,
fence);
diff --git a/drivers/gpu/drm/i915/dma_resv_utils.c b/drivers/gpu/drm/i915/dma_resv_utils.c
index 9e508e7d4629f..bdfc6bf16a4e9 100644
--- a/drivers/gpu/drm/i915/dma_resv_utils.c
+++ b/drivers/gpu/drm/i915/dma_resv_utils.c
@@ -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_unlocked(resv, true))
dma_resv_add_excl_fence(resv, NULL);
dma_resv_unlock(resv);
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_busy.c b/drivers/gpu/drm/i915/gem/i915_gem_busy.c
index 25235ef630c10..754ad6d1bace9 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_busy.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_busy.c
@@ -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_unlocked(obj->resv, true);
* to report the overall busyness. This is what the wait-ioctl does.
*
*/
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 297143511f99b..e8f323564e57b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -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_unlocked(vma->resv, true);
}
static unsigned long vma_phys_addr(struct i915_vma *vma, u32 offset)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 2ebd79537aea9..7c0eb425cb3b3 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -500,7 +500,7 @@ i915_gem_object_last_write_engine(struct drm_i915_gem_object *obj)
struct dma_fence *fence;
rcu_read_lock();
- fence = dma_resv_get_excl_rcu(obj->base.resv);
+ fence = dma_resv_get_excl_unlocked(obj->base.resv);
rcu_read_unlock();
if (fence && dma_fence_is_i915(fence) && !dma_fence_is_signaled(fence))
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index a657b99ec7606..44df18dc9669f 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -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_unlocked(obj->base.resv, true, false,
+ MAX_SCHEDULE_TIMEOUT);
if (r <= 0)
drm_err(&i915->drm, "(%ld) failed to wait for idle\n", r);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_wait.c b/drivers/gpu/drm/i915/gem/i915_gem_wait.c
index 4b9856d5ba14f..5b6c52659ad4d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_wait.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_wait.c
@@ -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_unlocked(resv, &excl, &count, &shared);
if (ret)
return ret;
@@ -73,7 +73,7 @@ i915_gem_object_wait_reservation(struct dma_resv *resv,
*/
prune_fences = count && timeout >= 0;
} else {
- excl = dma_resv_get_excl_rcu(resv);
+ excl = dma_resv_get_excl_unlocked(resv);
}
if (excl && timeout >= 0)
@@ -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_unlocked(obj->base.resv,
+ &excl, &count, &shared);
if (ret)
return ret;
@@ -170,7 +170,7 @@ i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
kfree(shared);
} else {
- excl = dma_resv_get_excl_rcu(obj->base.resv);
+ excl = dma_resv_get_excl_unlocked(obj->base.resv);
}
if (excl) {
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index 970d8f4986bbe..f1ed03ced7dd1 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -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_unlocked(obj->base.resv,
+ &excl, &count, &shared);
if (ret)
return ret;
@@ -1611,7 +1611,7 @@ i915_request_await_object(struct i915_request *to,
dma_fence_put(shared[i]);
kfree(shared);
} else {
- excl = dma_resv_get_excl_rcu(obj->base.resv);
+ excl = dma_resv_get_excl_unlocked(obj->base.resv);
}
if (excl) {
diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c
index 2744558f30507..0bcb7ea44201e 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence.c
@@ -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_unlocked(resv, &excl, &count, &shared);
if (ret)
return ret;
@@ -606,7 +606,7 @@ int i915_sw_fence_await_reservation(struct i915_sw_fence *fence,
dma_fence_put(shared[i]);
kfree(shared);
} else {
- excl = dma_resv_get_excl_rcu(resv);
+ excl = dma_resv_get_excl_unlocked(resv);
}
if (ret >= 0 && excl && excl->ops != exclude) {
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 56df86e5f7400..1aca60507bb14 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -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_unlocked(obj->resv, write, true, remain);
if (ret == 0)
return remain == 0 ? -EBUSY : -ETIMEDOUT;
else if (ret < 0)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
index 0cb1f9d848d3e..8d048bacd6f02 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
@@ -561,7 +561,7 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state)
asyw->image.handle[0] = ctxdma->object.handle;
}
- asyw->state.fence = dma_resv_get_excl_rcu(nvbo->bo.base.resv);
+ asyw->state.fence = dma_resv_get_excl_unlocked(nvbo->bo.base.resv);
asyw->image.offset[0] = nvbo->offset;
if (wndw->func->prepare) {
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index a70e82413fa75..bc6b09ee9b552 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -928,8 +928,8 @@ 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_unlocked(nvbo->bo.base.resv, write, true,
+ no_wait ? 0 : 30 * HZ);
if (!lret)
ret = -EBUSY;
else if (lret > 0)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index ca07098a61419..eef5b632ee0ce 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -311,8 +311,8 @@ 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_unlocked(gem_obj->resv, true,
+ true, timeout);
if (!ret)
ret = timeout ? -ETIMEDOUT : -EBUSY;
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 6003cfeb13221..2df3e999a38d0 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -203,7 +203,7 @@ static void panfrost_acquire_object_fences(struct drm_gem_object **bos,
int i;
for (i = 0; i < bo_count; i++)
- implicit_fences[i] = dma_resv_get_excl_rcu(bos[i]->resv);
+ implicit_fences[i] = dma_resv_get_excl_unlocked(bos[i]->resv);
}
static void panfrost_attach_object_fences(struct drm_gem_object **bos,
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index 05ea2f39f6261..1a38b0bf36d11 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -125,7 +125,7 @@ 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_unlocked(robj->tbo.base.resv, true, true, 30 * HZ);
if (!r)
r = -EBUSY;
@@ -474,7 +474,7 @@ 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_unlocked(robj->tbo.base.resv, true);
if (r == 0)
r = -EBUSY;
else
@@ -503,7 +503,7 @@ 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_unlocked(robj->tbo.base.resv, true, true, 30 * HZ);
if (ret == 0)
r = -EBUSY;
else if (ret < 0)
diff --git a/drivers/gpu/drm/radeon/radeon_mn.c b/drivers/gpu/drm/radeon/radeon_mn.c
index e37c9a57a7c36..a19be3f8a218c 100644
--- a/drivers/gpu/drm/radeon/radeon_mn.c
+++ b/drivers/gpu/drm/radeon/radeon_mn.c
@@ -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_unlocked(bo->tbo.base.resv, true, false,
+ MAX_SCHEDULE_TIMEOUT);
if (r <= 0)
DRM_ERROR("(%ld) failed to wait for user bo\n", r);
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index ca1b098b6a561..215cad3149621 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -294,7 +294,7 @@ 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_unlocked(resv, true))
ret = 0;
else
ret = -EBUSY;
@@ -306,8 +306,8 @@ 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_unlocked(resv, true, interruptible,
+ 30 * HZ);
if (lret < 0)
return lret;
@@ -409,8 +409,8 @@ 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_unlocked(bo->base.resv, true, false,
+ 30 * HZ);
}
if (bo->bdev->funcs->release_notify)
@@ -420,7 +420,7 @@ static void ttm_bo_release(struct kref *kref)
ttm_mem_io_free(bdev, &bo->mem);
}
- if (!dma_resv_test_signaled_rcu(bo->base.resv, true) ||
+ if (!dma_resv_test_signaled_unlocked(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);
@@ -1116,14 +1116,14 @@ 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_unlocked(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_unlocked(bo->base.resv, true,
+ interruptible, timeout);
if (timeout < 0)
return timeout;
diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c
index 2902dc6e64faf..010a82405e374 100644
--- a/drivers/gpu/drm/vgem/vgem_fence.c
+++ b/drivers/gpu/drm/vgem/vgem_fence.c
@@ -151,8 +151,8 @@ 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_unlocked(resv,
+ arg->flags & VGEM_FENCE_WRITE)) {
ret = -EBUSY;
goto err_fence;
}
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 669f2ee395154..ab010c8e32816 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -451,10 +451,10 @@ 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_unlocked(obj->resv, true);
} else {
- ret = dma_resv_wait_timeout_rcu(obj->resv, true, true,
- timeout);
+ ret = dma_resv_wait_timeout_unlocked(obj->resv, true, true,
+ timeout);
}
if (ret == 0)
ret = -EBUSY;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
index 04dd49c4c2572..19e1ce23842a9 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -743,7 +743,7 @@ 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
+ lret = dma_resv_wait_timeout_unlocked
(bo->base.resv, true, true,
nonblock ? 0 : MAX_SCHEDULE_TIMEOUT);
if (!lret)
diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h
index d44a77e8a7e34..99cfb7af966b8 100644
--- a/include/linux/dma-resv.h
+++ b/include/linux/dma-resv.h
@@ -246,7 +246,7 @@ dma_resv_get_excl(struct dma_resv *obj)
}
/**
- * dma_resv_get_excl_rcu - get the reservation object's
+ * dma_resv_get_excl_unlocked - get the reservation object's
* exclusive fence, without lock held.
* @obj: the reservation object
*
@@ -257,7 +257,7 @@ dma_resv_get_excl(struct dma_resv *obj)
* The exclusive fence or NULL if none
*/
static inline struct dma_fence *
-dma_resv_get_excl_rcu(struct dma_resv *obj)
+dma_resv_get_excl_unlocked(struct dma_resv *obj)
{
struct dma_fence *fence;
@@ -278,16 +278,16 @@ 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_unlocked(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);
+long dma_resv_wait_timeout_unlocked(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);
+bool dma_resv_test_signaled_unlocked(struct dma_resv *obj, bool test_all);
#endif /* _LINUX_RESERVATION_H */
--
2.31.1
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