Message ID | 20181102082517.4456-1-david1.zhou@amd.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | [1/5] drm: add support of syncobj timeline point wait v4 | expand |
Am 02.11.18 um 09:25 schrieb Chunming Zhou: > points array is one-to-one match with syncobjs array. > v2: > add seperate ioctl for timeline point wait, otherwise break uapi. > v3: > userspace can specify two kinds waits:: > a. Wait for time point to be completed. > b. and wait for time point to become available > v4: > rebase > > Signed-off-by: Chunming Zhou <david1.zhou@amd.com> > Cc: Daniel Rakos <Daniel.Rakos@amd.com> > Cc: Jason Ekstrand <jason@jlekstrand.net> > Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> > Cc: Dave Airlie <airlied@redhat.com> > Cc: Christian König <christian.koenig@amd.com> > Cc: Chris Wilson <chris@chris-wilson.co.uk> > --- > drivers/gpu/drm/drm_internal.h | 2 + > drivers/gpu/drm/drm_ioctl.c | 2 + > drivers/gpu/drm/drm_syncobj.c | 115 ++++++++++++++++++++++++++++----- > include/uapi/drm/drm.h | 18 ++++++ > 4 files changed, 121 insertions(+), 16 deletions(-) > > diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h > index 0c4eb4a9ab31..566d44e3c782 100644 > --- a/drivers/gpu/drm/drm_internal.h > +++ b/drivers/gpu/drm/drm_internal.h > @@ -183,6 +183,8 @@ int drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data, > struct drm_file *file_private); > int drm_syncobj_wait_ioctl(struct drm_device *dev, void *data, > struct drm_file *file_private); > +int drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data, > + struct drm_file *file_private); > int drm_syncobj_reset_ioctl(struct drm_device *dev, void *data, > struct drm_file *file_private); > int drm_syncobj_signal_ioctl(struct drm_device *dev, void *data, > diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c > index 94bd872d56c4..a9a17ed35cc4 100644 > --- a/drivers/gpu/drm/drm_ioctl.c > +++ b/drivers/gpu/drm/drm_ioctl.c > @@ -675,6 +675,8 @@ static const struct drm_ioctl_desc drm_ioctls[] = { > DRM_UNLOCKED|DRM_RENDER_ALLOW), > DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_WAIT, drm_syncobj_wait_ioctl, > DRM_UNLOCKED|DRM_RENDER_ALLOW), > + DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT, drm_syncobj_timeline_wait_ioctl, > + DRM_UNLOCKED|DRM_RENDER_ALLOW), > DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_RESET, drm_syncobj_reset_ioctl, > DRM_UNLOCKED|DRM_RENDER_ALLOW), > DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_SIGNAL, drm_syncobj_signal_ioctl, > diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c > index 4dca5f7e8c4b..9dc54a345480 100644 > --- a/drivers/gpu/drm/drm_syncobj.c > +++ b/drivers/gpu/drm/drm_syncobj.c > @@ -153,11 +153,12 @@ static void drm_syncobj_add_callback_locked(struct drm_syncobj *syncobj, > } > > static void drm_syncobj_fence_get_or_add_callback(struct drm_syncobj *syncobj, > + uint64_t point, > struct dma_fence **fence, > struct drm_syncobj_cb *cb, > drm_syncobj_func_t func) > { > - u64 pt_value = 0; > + u64 pt_value = point; > > WARN_ON(*fence); > > @@ -854,6 +855,7 @@ struct syncobj_wait_entry { > struct dma_fence *fence; > struct dma_fence_cb fence_cb; > struct drm_syncobj_cb syncobj_cb; > + u64 point; > }; > > static void syncobj_wait_fence_func(struct dma_fence *fence, > @@ -871,12 +873,13 @@ static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj, > struct syncobj_wait_entry *wait = > container_of(cb, struct syncobj_wait_entry, syncobj_cb); > > - drm_syncobj_search_fence(syncobj, 0, 0, &wait->fence); > + drm_syncobj_search_fence(syncobj, wait->point, 0, &wait->fence); > > wake_up_process(wait->task); > } > > static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, > + void __user *user_points, > uint32_t count, > uint32_t flags, > signed long timeout, > @@ -884,12 +887,37 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, > { > struct syncobj_wait_entry *entries; > struct dma_fence *fence; > + uint64_t *points; > uint32_t signaled_count, i; > > - entries = kcalloc(count, sizeof(*entries), GFP_KERNEL); > - if (!entries) > + points = kmalloc_array(count, sizeof(*points), GFP_KERNEL); > + if (points == NULL) > return -ENOMEM; > > + if (!user_points) { > + memset(points, 0, count * sizeof(uint64_t)); > + } else if (copy_from_user(points, user_points, sizeof(uint64_t) * count)) { > + timeout = -EFAULT; > + goto err_free_points; > + } > + > + Double empty line here. > + if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE) { > + struct dma_fence *fence; > + for (i = 0; i < count; ++i) { > + timeout = drm_syncobj_search_fence(syncobjs[i], points[i], > + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT, > + &fence); > + if (timeout) > + goto err_free_points; > + } > + goto err_free_points; A comment would be nice here to note that we only wait for the fences to become available. Alternatively it might be a good idea to make this an separate IOCTL. Apart from those nit picks looks quite good to me, Christian. > + } > + entries = kcalloc(count, sizeof(*entries), GFP_KERNEL); > + if (!entries) { > + timeout = -ENOMEM; > + goto err_free_points; > + } > /* Walk the list of sync objects and initialize entries. We do > * this up-front so that we can properly return -EINVAL if there is > * a syncobj with a missing fence and then never have the chance of > @@ -898,7 +926,8 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, > signaled_count = 0; > for (i = 0; i < count; ++i) { > entries[i].task = current; > - drm_syncobj_search_fence(syncobjs[i], 0, 0, > + entries[i].point = points[i]; > + drm_syncobj_search_fence(syncobjs[i], points[i], 0, > &entries[i].fence); > if (!entries[i].fence) { > if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { > @@ -934,6 +963,7 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, > continue; > > drm_syncobj_fence_get_or_add_callback(syncobjs[i], > + entries[i].point, > &entries[i].fence, > &entries[i].syncobj_cb, > syncobj_wait_syncobj_func); > @@ -996,6 +1026,9 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, > } > kfree(entries); > > +err_free_points: > + kfree(points); > + > return timeout; > } > > @@ -1034,19 +1067,33 @@ static signed long drm_timeout_abs_to_jiffies(int64_t timeout_nsec) > static int drm_syncobj_array_wait(struct drm_device *dev, > struct drm_file *file_private, > struct drm_syncobj_wait *wait, > - struct drm_syncobj **syncobjs) > + struct drm_syncobj_timeline_wait *timeline_wait, > + struct drm_syncobj **syncobjs, bool timeline) > { > - signed long timeout = drm_timeout_abs_to_jiffies(wait->timeout_nsec); > + signed long timeout = 0; > uint32_t first = ~0; > > - timeout = drm_syncobj_array_wait_timeout(syncobjs, > - wait->count_handles, > - wait->flags, > - timeout, &first); > - if (timeout < 0) > - return timeout; > - > - wait->first_signaled = first; > + if (!timeline) { > + timeout = drm_timeout_abs_to_jiffies(wait->timeout_nsec); > + timeout = drm_syncobj_array_wait_timeout(syncobjs, > + NULL, > + wait->count_handles, > + wait->flags, > + timeout, &first); > + if (timeout < 0) > + return timeout; > + wait->first_signaled = first; > + } else { > + timeout = drm_timeout_abs_to_jiffies(timeline_wait->timeout_nsec); > + timeout = drm_syncobj_array_wait_timeout(syncobjs, > + u64_to_user_ptr(timeline_wait->points), > + timeline_wait->count_handles, > + timeline_wait->flags, > + timeout, &first); > + if (timeout < 0) > + return timeout; > + timeline_wait->first_signaled = first; > + } > return 0; > } > > @@ -1132,13 +1179,49 @@ drm_syncobj_wait_ioctl(struct drm_device *dev, void *data, > return ret; > > ret = drm_syncobj_array_wait(dev, file_private, > - args, syncobjs); > + args, NULL, syncobjs, false); > > drm_syncobj_array_free(syncobjs, args->count_handles); > > return ret; > } > > +int > +drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data, > + struct drm_file *file_private) > +{ > + struct drm_syncobj_timeline_wait *args = data; > + struct drm_syncobj **syncobjs; > + int ret = 0; > + > + if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) > + return -ENODEV; > + > + if (args->flags & ~(DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL | > + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT | > + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_COMPLETED | > + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE)) > + return -EINVAL; > + > + if (args->count_handles == 0) > + return -EINVAL; > + > + ret = drm_syncobj_array_find(file_private, > + u64_to_user_ptr(args->handles), > + args->count_handles, > + &syncobjs); > + if (ret < 0) > + return ret; > + > + ret = drm_syncobj_array_wait(dev, file_private, > + NULL, args, syncobjs, true); > + > + drm_syncobj_array_free(syncobjs, args->count_handles); > + > + return ret; > +} > + > + > int > drm_syncobj_reset_ioctl(struct drm_device *dev, void *data, > struct drm_file *file_private) > diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h > index cebdb2541eb7..c8bc1414753d 100644 > --- a/include/uapi/drm/drm.h > +++ b/include/uapi/drm/drm.h > @@ -738,6 +738,10 @@ struct drm_syncobj_handle { > > #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0) > #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1) > +/* wait for time point to be completed */ > +#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_COMPLETED (1 << 2) > +/* wait for time point to become available */ > +#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 3) > struct drm_syncobj_wait { > __u64 handles; > /* absolute timeout */ > @@ -748,6 +752,19 @@ struct drm_syncobj_wait { > __u32 pad; > }; > > +struct drm_syncobj_timeline_wait { > + __u64 handles; > + /* wait on specific timeline point for every handles*/ > + __u64 points; > + /* absolute timeout */ > + __s64 timeout_nsec; > + __u32 count_handles; > + __u32 flags; > + __u32 first_signaled; /* only valid when not waiting all */ > + __u32 pad; > +}; > + > + > struct drm_syncobj_array { > __u64 handles; > __u32 count_handles; > @@ -910,6 +927,7 @@ extern "C" { > #define DRM_IOCTL_MODE_GET_LEASE DRM_IOWR(0xC8, struct drm_mode_get_lease) > #define DRM_IOCTL_MODE_REVOKE_LEASE DRM_IOWR(0xC9, struct drm_mode_revoke_lease) > > +#define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait) > /** > * Device specific ioctls should only be in their respective headers > * The device specific ioctl range is from 0x40 to 0x9f.
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index 0c4eb4a9ab31..566d44e3c782 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -183,6 +183,8 @@ int drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private); int drm_syncobj_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private); +int drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_private); int drm_syncobj_reset_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private); int drm_syncobj_signal_ioctl(struct drm_device *dev, void *data, diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 94bd872d56c4..a9a17ed35cc4 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -675,6 +675,8 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_WAIT, drm_syncobj_wait_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT, drm_syncobj_timeline_wait_ioctl, + DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_RESET, drm_syncobj_reset_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_SIGNAL, drm_syncobj_signal_ioctl, diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index 4dca5f7e8c4b..9dc54a345480 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -153,11 +153,12 @@ static void drm_syncobj_add_callback_locked(struct drm_syncobj *syncobj, } static void drm_syncobj_fence_get_or_add_callback(struct drm_syncobj *syncobj, + uint64_t point, struct dma_fence **fence, struct drm_syncobj_cb *cb, drm_syncobj_func_t func) { - u64 pt_value = 0; + u64 pt_value = point; WARN_ON(*fence); @@ -854,6 +855,7 @@ struct syncobj_wait_entry { struct dma_fence *fence; struct dma_fence_cb fence_cb; struct drm_syncobj_cb syncobj_cb; + u64 point; }; static void syncobj_wait_fence_func(struct dma_fence *fence, @@ -871,12 +873,13 @@ static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj, struct syncobj_wait_entry *wait = container_of(cb, struct syncobj_wait_entry, syncobj_cb); - drm_syncobj_search_fence(syncobj, 0, 0, &wait->fence); + drm_syncobj_search_fence(syncobj, wait->point, 0, &wait->fence); wake_up_process(wait->task); } static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, + void __user *user_points, uint32_t count, uint32_t flags, signed long timeout, @@ -884,12 +887,37 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, { struct syncobj_wait_entry *entries; struct dma_fence *fence; + uint64_t *points; uint32_t signaled_count, i; - entries = kcalloc(count, sizeof(*entries), GFP_KERNEL); - if (!entries) + points = kmalloc_array(count, sizeof(*points), GFP_KERNEL); + if (points == NULL) return -ENOMEM; + if (!user_points) { + memset(points, 0, count * sizeof(uint64_t)); + } else if (copy_from_user(points, user_points, sizeof(uint64_t) * count)) { + timeout = -EFAULT; + goto err_free_points; + } + + + if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE) { + struct dma_fence *fence; + for (i = 0; i < count; ++i) { + timeout = drm_syncobj_search_fence(syncobjs[i], points[i], + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT, + &fence); + if (timeout) + goto err_free_points; + } + goto err_free_points; + } + entries = kcalloc(count, sizeof(*entries), GFP_KERNEL); + if (!entries) { + timeout = -ENOMEM; + goto err_free_points; + } /* Walk the list of sync objects and initialize entries. We do * this up-front so that we can properly return -EINVAL if there is * a syncobj with a missing fence and then never have the chance of @@ -898,7 +926,8 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, signaled_count = 0; for (i = 0; i < count; ++i) { entries[i].task = current; - drm_syncobj_search_fence(syncobjs[i], 0, 0, + entries[i].point = points[i]; + drm_syncobj_search_fence(syncobjs[i], points[i], 0, &entries[i].fence); if (!entries[i].fence) { if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) { @@ -934,6 +963,7 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, continue; drm_syncobj_fence_get_or_add_callback(syncobjs[i], + entries[i].point, &entries[i].fence, &entries[i].syncobj_cb, syncobj_wait_syncobj_func); @@ -996,6 +1026,9 @@ static signed long drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs, } kfree(entries); +err_free_points: + kfree(points); + return timeout; } @@ -1034,19 +1067,33 @@ static signed long drm_timeout_abs_to_jiffies(int64_t timeout_nsec) static int drm_syncobj_array_wait(struct drm_device *dev, struct drm_file *file_private, struct drm_syncobj_wait *wait, - struct drm_syncobj **syncobjs) + struct drm_syncobj_timeline_wait *timeline_wait, + struct drm_syncobj **syncobjs, bool timeline) { - signed long timeout = drm_timeout_abs_to_jiffies(wait->timeout_nsec); + signed long timeout = 0; uint32_t first = ~0; - timeout = drm_syncobj_array_wait_timeout(syncobjs, - wait->count_handles, - wait->flags, - timeout, &first); - if (timeout < 0) - return timeout; - - wait->first_signaled = first; + if (!timeline) { + timeout = drm_timeout_abs_to_jiffies(wait->timeout_nsec); + timeout = drm_syncobj_array_wait_timeout(syncobjs, + NULL, + wait->count_handles, + wait->flags, + timeout, &first); + if (timeout < 0) + return timeout; + wait->first_signaled = first; + } else { + timeout = drm_timeout_abs_to_jiffies(timeline_wait->timeout_nsec); + timeout = drm_syncobj_array_wait_timeout(syncobjs, + u64_to_user_ptr(timeline_wait->points), + timeline_wait->count_handles, + timeline_wait->flags, + timeout, &first); + if (timeout < 0) + return timeout; + timeline_wait->first_signaled = first; + } return 0; } @@ -1132,13 +1179,49 @@ drm_syncobj_wait_ioctl(struct drm_device *dev, void *data, return ret; ret = drm_syncobj_array_wait(dev, file_private, - args, syncobjs); + args, NULL, syncobjs, false); drm_syncobj_array_free(syncobjs, args->count_handles); return ret; } +int +drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_private) +{ + struct drm_syncobj_timeline_wait *args = data; + struct drm_syncobj **syncobjs; + int ret = 0; + + if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) + return -ENODEV; + + if (args->flags & ~(DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL | + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT | + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_COMPLETED | + DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE)) + return -EINVAL; + + if (args->count_handles == 0) + return -EINVAL; + + ret = drm_syncobj_array_find(file_private, + u64_to_user_ptr(args->handles), + args->count_handles, + &syncobjs); + if (ret < 0) + return ret; + + ret = drm_syncobj_array_wait(dev, file_private, + NULL, args, syncobjs, true); + + drm_syncobj_array_free(syncobjs, args->count_handles); + + return ret; +} + + int drm_syncobj_reset_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private) diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index cebdb2541eb7..c8bc1414753d 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -738,6 +738,10 @@ struct drm_syncobj_handle { #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0) #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1) +/* wait for time point to be completed */ +#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_COMPLETED (1 << 2) +/* wait for time point to become available */ +#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 3) struct drm_syncobj_wait { __u64 handles; /* absolute timeout */ @@ -748,6 +752,19 @@ struct drm_syncobj_wait { __u32 pad; }; +struct drm_syncobj_timeline_wait { + __u64 handles; + /* wait on specific timeline point for every handles*/ + __u64 points; + /* absolute timeout */ + __s64 timeout_nsec; + __u32 count_handles; + __u32 flags; + __u32 first_signaled; /* only valid when not waiting all */ + __u32 pad; +}; + + struct drm_syncobj_array { __u64 handles; __u32 count_handles; @@ -910,6 +927,7 @@ extern "C" { #define DRM_IOCTL_MODE_GET_LEASE DRM_IOWR(0xC8, struct drm_mode_get_lease) #define DRM_IOCTL_MODE_REVOKE_LEASE DRM_IOWR(0xC9, struct drm_mode_revoke_lease) +#define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait) /** * Device specific ioctls should only be in their respective headers * The device specific ioctl range is from 0x40 to 0x9f.
points array is one-to-one match with syncobjs array. v2: add seperate ioctl for timeline point wait, otherwise break uapi. v3: userspace can specify two kinds waits:: a. Wait for time point to be completed. b. and wait for time point to become available v4: rebase Signed-off-by: Chunming Zhou <david1.zhou@amd.com> Cc: Daniel Rakos <Daniel.Rakos@amd.com> Cc: Jason Ekstrand <jason@jlekstrand.net> Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Cc: Dave Airlie <airlied@redhat.com> Cc: Christian König <christian.koenig@amd.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> --- drivers/gpu/drm/drm_internal.h | 2 + drivers/gpu/drm/drm_ioctl.c | 2 + drivers/gpu/drm/drm_syncobj.c | 115 ++++++++++++++++++++++++++++----- include/uapi/drm/drm.h | 18 ++++++ 4 files changed, 121 insertions(+), 16 deletions(-)