[PATCH v2 09/12] drm/msm: Conversion to drm scheduler

From: Rob Clark robdclark@chromium.org

For existing adrenos, there is one or more ringbuffer, depending on whether preemption is supported. When preemption is supported, each ringbuffer has it's own priority. A submitqueue (which maps to a gl context or vk queue in userspace) is mapped to a specific ring- buffer at creation time, based on the submitqueue's priority.

Each ringbuffer has it's own drm_gpu_scheduler. Each submitqueue maps to a drm_sched_entity. And each submit maps to a drm_sched_job.

Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/4 Signed-off-by: Rob Clark robdclark@chromium.org Acked-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/msm_gem.c | 35 ------ drivers/gpu/drm/msm/msm_gem.h | 26 ++++- drivers/gpu/drm/msm/msm_gem_submit.c | 161 +++++++++++++------------- drivers/gpu/drm/msm/msm_gpu.c | 13 +-- drivers/gpu/drm/msm/msm_gpu.h | 2 + drivers/gpu/drm/msm/msm_rd.c | 6 +- drivers/gpu/drm/msm/msm_ringbuffer.c | 66 +++++++++++ drivers/gpu/drm/msm/msm_ringbuffer.h | 12 ++ drivers/gpu/drm/msm/msm_submitqueue.c | 26 +++++ 10 files changed, 217 insertions(+), 131 deletions(-)

diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig index 10f693ea89d3..896266267ad7 100644 --- a/drivers/gpu/drm/msm/Kconfig +++ b/drivers/gpu/drm/msm/Kconfig @@ -12,6 +12,7 @@ config DRM_MSM select REGULATOR select DRM_KMS_HELPER select DRM_PANEL + select DRM_SCHED select SHMEM select TMPFS select QCOM_SCM if ARCH_QCOM diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 00a6289678dd..41a111c49cc7 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -806,41 +806,6 @@ void msm_gem_vunmap(struct drm_gem_object *obj) msm_obj->vaddr = NULL; }

-/* must be called before _move_to_active().. */ -int msm_gem_sync_object(struct drm_gem_object *obj, - struct msm_fence_context *fctx, bool exclusive) -{ - struct dma_resv_list *fobj; - struct dma_fence *fence; - int i, ret; - - fobj = dma_resv_get_list(obj->resv); - if (!fobj || (fobj->shared_count == 0)) { - fence = dma_resv_get_excl(obj->resv); - /* don't need to wait on our own fences, since ring is fifo */ - if (fence && (fence->context != fctx->context)) { - ret = dma_fence_wait(fence, true); - if (ret) - return ret; - } - } - - if (!exclusive || !fobj) - return 0; - - for (i = 0; i < fobj->shared_count; i++) { - fence = rcu_dereference_protected(fobj->shared[i], - dma_resv_held(obj->resv)); - if (fence->context != fctx->context) { - ret = dma_fence_wait(fence, true); - if (ret) - return ret; - } - } - - return 0; -} - void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu) { struct msm_gem_object *msm_obj = to_msm_bo(obj); diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index e0579abda5b9..a48114058ff9 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -9,6 +9,7 @@

#include <linux/kref.h> #include <linux/dma-resv.h> +#include "drm/gpu_scheduler.h" #include "msm_drv.h"

/* Make all GEM related WARN_ON()s ratelimited.. when things go wrong they @@ -143,8 +144,6 @@ void *msm_gem_get_vaddr_active(struct drm_gem_object *obj); void msm_gem_put_vaddr_locked(struct drm_gem_object *obj); void msm_gem_put_vaddr(struct drm_gem_object *obj); int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv); -int msm_gem_sync_object(struct drm_gem_object *obj, - struct msm_fence_context *fctx, bool exclusive); void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu); void msm_gem_active_put(struct drm_gem_object *obj); int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout); @@ -311,6 +310,7 @@ void msm_gem_vunmap(struct drm_gem_object *obj); * make it easier to unwind when things go wrong, etc). */ struct msm_gem_submit { + struct drm_sched_job base; struct kref ref; struct drm_device *dev; struct msm_gpu *gpu; @@ -319,7 +319,22 @@ struct msm_gem_submit { struct list_head bo_list; struct ww_acquire_ctx ticket; uint32_t seqno; /* Sequence number of the submit on the ring */ - struct dma_fence *fence; + + /* Array of struct dma_fence * to block on before submitting this job. + */ + struct xarray deps; + unsigned long last_dep; + + /* Hw fence, which is created when the scheduler executes the job, and + * is signaled when the hw finishes (via seqno write from cmdstream) + */ + struct dma_fence *hw_fence; + + /* Userspace visible fence, which is signaled by the scheduler after + * the hw_fence is signaled. + */ + struct dma_fence *user_fence; + int fence_id; /* key into queue->fence_idr */ struct msm_gpu_submitqueue *queue; struct pid *pid; /* submitting process */ @@ -350,6 +365,11 @@ struct msm_gem_submit { } bos[]; };

+static inline struct msm_gem_submit *to_msm_submit(struct drm_sched_job *job) +{ + return container_of(job, struct msm_gem_submit, base); +} + void __msm_gem_submit_destroy(struct kref *kref);

static inline void msm_gem_submit_get(struct msm_gem_submit *submit) diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index f570155bc086..2b158433a6e5 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -33,6 +33,7 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev, { struct msm_gem_submit *submit; uint64_t sz; + int ret;

sz = struct_size(submit, bos, nr_bos) + ((u64)nr_cmds * sizeof(submit->cmd[0])); @@ -44,6 +45,14 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev, if (!submit) return ERR_PTR(-ENOMEM);

+ ret = drm_sched_job_init(&submit->base, &queue->entity, queue); + if (ret) { + kfree(submit); + return ERR_PTR(ret); + } + + xa_init_flags(&submit->deps, XA_FLAGS_ALLOC); + kref_init(&submit->ref); submit->dev = dev; submit->aspace = queue->ctx->aspace; @@ -63,6 +72,8 @@ void __msm_gem_submit_destroy(struct kref *kref) { struct msm_gem_submit *submit = container_of(kref, struct msm_gem_submit, ref); + unsigned long index; + struct dma_fence *fence; unsigned i;

if (submit->fence_id) { @@ -71,7 +82,14 @@ void __msm_gem_submit_destroy(struct kref *kref) mutex_unlock(&submit->queue->lock); }

- dma_fence_put(submit->fence); + xa_for_each (&submit->deps, index, fence) { + dma_fence_put(fence); + } + + xa_destroy(&submit->deps); + + dma_fence_put(submit->user_fence); + dma_fence_put(submit->hw_fence);

put_pid(submit->pid); msm_submitqueue_put(submit->queue); @@ -307,7 +325,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit) int i, ret = 0;

for (i = 0; i < submit->nr_bos; i++) { - struct msm_gem_object *msm_obj = submit->bos[i].obj; + struct drm_gem_object *obj = &submit->bos[i].obj->base; bool write = submit->bos[i].flags & MSM_SUBMIT_BO_WRITE;

if (!write) { @@ -316,8 +334,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit) * strange place to call it. OTOH this is a * convenient can-fail point to hook it in. */ - ret = dma_resv_reserve_shared(msm_obj->base.resv, - 1); + ret = dma_resv_reserve_shared(obj->resv, 1); if (ret) return ret; } @@ -325,7 +342,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit) if (no_implicit) continue;

- ret = msm_gem_sync_object(&msm_obj->base, submit->ring->fctx, + ret = drm_gem_fence_array_add_implicit(&submit->deps, obj, write); if (ret) break; @@ -376,9 +393,9 @@ static void submit_attach_object_fences(struct msm_gem_submit *submit) struct drm_gem_object *obj = &submit->bos[i].obj->base;

if (submit->bos[i].flags & MSM_SUBMIT_BO_WRITE) - dma_resv_add_excl_fence(obj->resv, submit->fence); + dma_resv_add_excl_fence(obj->resv, submit->user_fence); else if (submit->bos[i].flags & MSM_SUBMIT_BO_READ) - dma_resv_add_shared_fence(obj->resv, submit->fence); + dma_resv_add_shared_fence(obj->resv, submit->user_fence); } }

@@ -517,12 +534,12 @@ struct msm_submit_post_dep { struct dma_fence_chain *chain; };

-static struct drm_syncobj **msm_wait_deps(struct drm_device *dev, - struct drm_file *file, - uint64_t in_syncobjs_addr, - uint32_t nr_in_syncobjs, - size_t syncobj_stride, - struct msm_ringbuffer *ring) +static struct drm_syncobj **msm_parse_deps(struct msm_gem_submit *submit, + struct drm_file *file, + uint64_t in_syncobjs_addr, + uint32_t nr_in_syncobjs, + size_t syncobj_stride, + struct msm_ringbuffer *ring) { struct drm_syncobj **syncobjs = NULL; struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; @@ -546,7 +563,7 @@ static struct drm_syncobj **msm_wait_deps(struct drm_device *dev, }

if (syncobj_desc.point && - !drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) { + !drm_core_check_feature(submit->dev, DRIVER_SYNCOBJ_TIMELINE)) { ret = -EOPNOTSUPP; break; } @@ -561,10 +578,7 @@ static struct drm_syncobj **msm_wait_deps(struct drm_device *dev, if (ret) break;

- if (!dma_fence_match_context(fence, ring->fctx->context)) - ret = dma_fence_wait(fence, true); - - dma_fence_put(fence); + ret = drm_gem_fence_array_add(&submit->deps, fence); if (ret) break;

@@ -741,47 +755,6 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, trace_msm_gpu_submit(pid_nr(pid), ring->id, submitid, args->nr_bos, args->nr_cmds);

- if (args->flags & MSM_SUBMIT_FENCE_FD_IN) { - struct dma_fence *in_fence; - - in_fence = sync_file_get_fence(args->fence_fd); - - if (!in_fence) - return -EINVAL; - - /* - * Wait if the fence is from a foreign context, or if the fence - * array contains any fence from a foreign context. - */ - ret = 0; - if (!dma_fence_match_context(in_fence, ring->fctx->context)) - ret = dma_fence_wait(in_fence, true); - - dma_fence_put(in_fence); - if (ret) - return ret; - } - - if (args->flags & MSM_SUBMIT_SYNCOBJ_IN) { - syncobjs_to_reset = msm_wait_deps(dev, file, - args->in_syncobjs, - args->nr_in_syncobjs, - args->syncobj_stride, ring); - if (IS_ERR(syncobjs_to_reset)) - return PTR_ERR(syncobjs_to_reset); - } - - if (args->flags & MSM_SUBMIT_SYNCOBJ_OUT) { - post_deps = msm_parse_post_deps(dev, file, - args->out_syncobjs, - args->nr_out_syncobjs, - args->syncobj_stride); - if (IS_ERR(post_deps)) { - ret = PTR_ERR(post_deps); - goto out_post_unlock; - } - } - ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) goto out_post_unlock; @@ -807,22 +780,50 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, if (args->flags & MSM_SUBMIT_SUDO) submit->in_rb = true;

+ if (args->flags & MSM_SUBMIT_FENCE_FD_IN) { + struct dma_fence *in_fence; + + in_fence = sync_file_get_fence(args->fence_fd); + + if (!in_fence) { + ret = -EINVAL; + goto out_unlock; + } + + ret = drm_gem_fence_array_add(&submit->deps, in_fence); + if (ret) + goto out_unlock; + } + + if (args->flags & MSM_SUBMIT_SYNCOBJ_IN) { + syncobjs_to_reset = msm_parse_deps(submit, file, + args->in_syncobjs, + args->nr_in_syncobjs, + args->syncobj_stride, ring); + if (IS_ERR(syncobjs_to_reset)) { + ret = PTR_ERR(syncobjs_to_reset); + goto out_unlock; + } + } + + if (args->flags & MSM_SUBMIT_SYNCOBJ_OUT) { + post_deps = msm_parse_post_deps(dev, file, + args->out_syncobjs, + args->nr_out_syncobjs, + args->syncobj_stride); + if (IS_ERR(post_deps)) { + ret = PTR_ERR(post_deps); + goto out_unlock; + } + } + ret = submit_lookup_objects(submit, args, file); if (ret) - goto out_pre_pm; + goto out;

ret = submit_lookup_cmds(submit, args, file); if (ret) - goto out_pre_pm; - - /* - * Thanks to dev_pm_opp opp_table_lock interactions with mm->mmap_sem - * in the resume path, we need to to rpm get before we lock objs. - * Which unfortunately might involve powering up the GPU sooner than - * is necessary. But at least in the explicit fencing case, we will - * have already done all the fence waiting. - */ - pm_runtime_get_sync(&gpu->pdev->dev); + goto out;

/* copy_*_user while holding a ww ticket upsets lockdep */ ww_acquire_init(&submit->ticket, &reservation_ww_class); @@ -869,12 +870,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,

submit->nr_cmds = i;

- submit->fence = msm_fence_alloc(ring->fctx); - if (IS_ERR(submit->fence)) { - ret = PTR_ERR(submit->fence); - submit->fence = NULL; - goto out; - } + submit->user_fence = dma_fence_get(&submit->base.s_fence->finished);

/* * Allocate an id which can be used by WAIT_FENCE ioctl to map back @@ -882,7 +878,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, */ mutex_lock(&queue->lock); submit->fence_id = idr_alloc_cyclic(&queue->fence_idr, - submit->fence, 0, INT_MAX, GFP_KERNEL); + submit->user_fence, 0, INT_MAX, GFP_KERNEL); mutex_unlock(&queue->lock); if (submit->fence_id < 0) { ret = submit->fence_id = 0; @@ -891,7 +887,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, }

if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { - struct sync_file *sync_file = sync_file_create(submit->fence); + struct sync_file *sync_file = sync_file_create(submit->user_fence); if (!sync_file) { ret = -ENOMEM; goto out; @@ -902,18 +898,19 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,

submit_attach_object_fences(submit);

- msm_gpu_submit(gpu, submit); + /* The scheduler owns a ref now: */ + msm_gem_submit_get(submit); + + drm_sched_entity_push_job(&submit->base, &queue->entity);

args->fence = submit->fence_id;

msm_reset_syncobjs(syncobjs_to_reset, args->nr_in_syncobjs); msm_process_post_deps(post_deps, args->nr_out_syncobjs, - submit->fence); + submit->user_fence);

out: - pm_runtime_put(&gpu->pdev->dev); -out_pre_pm: submit_cleanup(submit, !!ret); if (has_ww_ticket) ww_acquire_fini(&submit->ticket); diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 5bfc4d24a956..8a3a592da3a4 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -176,8 +176,8 @@ static void update_fences(struct msm_gpu *gpu, struct msm_ringbuffer *ring, break;

msm_update_fence(submit->ring->fctx, - submit->fence->seqno); - dma_fence_signal(submit->fence); + submit->hw_fence->seqno); + dma_fence_signal(submit->hw_fence); } spin_unlock_irqrestore(&ring->submit_lock, flags); } @@ -380,10 +380,6 @@ static void recover_worker(struct kthread_work *work) put_task_struct(task); }

- /* msm_rd_dump_submit() needs bo locked to dump: */ - for (i = 0; i < submit->nr_bos; i++) - msm_gem_lock(&submit->bos[i].obj->base); - if (comm && cmd) { DRM_DEV_ERROR(dev->dev, "%s: offending task: %s (%s)\n", gpu->name, comm, cmd); @@ -393,9 +389,6 @@ static void recover_worker(struct kthread_work *work) } else { msm_rd_dump_submit(priv->hangrd, submit, NULL); } - - for (i = 0; i < submit->nr_bos; i++) - msm_gem_unlock(&submit->bos[i].obj->base); }

/* Record the crash state */ @@ -704,7 +697,7 @@ static void retire_submits(struct msm_gpu *gpu) * been signalled, then later submits are not signalled * either, so we are also done. */ - if (submit && dma_fence_is_signaled(submit->fence)) { + if (submit && dma_fence_is_signaled(submit->hw_fence)) { retire_submit(gpu, ring, submit); } else { break; diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 579627252540..b912cacaecc0 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -267,6 +267,7 @@ struct msm_gpu_perfcntr { * seqno, protected by submitqueue lock * @lock: submitqueue lock * @ref: reference count + * @entity: the submit job-queue */ struct msm_gpu_submitqueue { int id; @@ -278,6 +279,7 @@ struct msm_gpu_submitqueue { struct idr fence_idr; struct mutex lock; struct kref ref; + struct drm_sched_entity entity; };

struct msm_gpu_state_bo { diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c index 659e5cc4b40a..b55398a34fa4 100644 --- a/drivers/gpu/drm/msm/msm_rd.c +++ b/drivers/gpu/drm/msm/msm_rd.c @@ -325,15 +325,19 @@ static void snapshot_buf(struct msm_rd_state *rd, if (!(submit->bos[idx].flags & MSM_SUBMIT_BO_READ)) return;

+ msm_gem_lock(&obj->base); buf = msm_gem_get_vaddr_active(&obj->base); if (IS_ERR(buf)) - return; + goto out_unlock;

buf += offset;

rd_write_section(rd, RD_BUFFER_CONTENTS, buf, size);

msm_gem_put_vaddr_locked(&obj->base); + +out_unlock: + msm_gem_unlock(&obj->base); }

/* called under struct_mutex */ diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c index 437cca57d005..5643f579ac46 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.c +++ b/drivers/gpu/drm/msm/msm_ringbuffer.c @@ -7,10 +7,64 @@ #include "msm_ringbuffer.h" #include "msm_gpu.h"

+/** + * The max # of jobs to write into the hw ringbuffer. + */ +static uint num_hw_submissions = 8; +MODULE_PARM_DESC(num_hw_submissions, "The max number of HW submissions (default 8)"); +module_param(num_hw_submissions, uint, 0600); + +static struct dma_fence *msm_job_dependency(struct drm_sched_job *job, + struct drm_sched_entity *s_entity) +{ + struct msm_gem_submit *submit = to_msm_submit(job); + + if (!xa_empty(&submit->deps)) + return xa_erase(&submit->deps, submit->last_dep++); + + return NULL; +} + +static struct dma_fence *msm_job_run(struct drm_sched_job *job) +{ + struct msm_gem_submit *submit = to_msm_submit(job); + struct msm_gpu *gpu = submit->gpu; + + submit->hw_fence = msm_fence_alloc(submit->ring->fctx); + + pm_runtime_get_sync(&gpu->pdev->dev); + + /* TODO move submit path over to using a per-ring lock.. */ + mutex_lock(&gpu->dev->struct_mutex); + + msm_gpu_submit(gpu, submit); + + mutex_unlock(&gpu->dev->struct_mutex); + + pm_runtime_put(&gpu->pdev->dev); + + return dma_fence_get(submit->hw_fence); +} + +static void msm_job_free(struct drm_sched_job *job) +{ + struct msm_gem_submit *submit = to_msm_submit(job); + + drm_sched_job_cleanup(job); + msm_gem_submit_put(submit); +} + +const struct drm_sched_backend_ops msm_sched_ops = { + .dependency = msm_job_dependency, + .run_job = msm_job_run, + .free_job = msm_job_free +}; + struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, void *memptrs, uint64_t memptrs_iova) { struct msm_ringbuffer *ring; + long sched_timeout; char name[32]; int ret;

@@ -45,6 +99,16 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, ring->memptrs = memptrs; ring->memptrs_iova = memptrs_iova;

+ /* currently managing hangcheck ourselves: */ + sched_timeout = MAX_SCHEDULE_TIMEOUT; + + ret = drm_sched_init(&ring->sched, &msm_sched_ops, + num_hw_submissions, 0, sched_timeout, + NULL, to_msm_bo(ring->bo)->name); + if (ret) { + goto fail; + } + INIT_LIST_HEAD(&ring->submits); spin_lock_init(&ring->submit_lock); spin_lock_init(&ring->preempt_lock); @@ -65,6 +129,8 @@ void msm_ringbuffer_destroy(struct msm_ringbuffer *ring) if (IS_ERR_OR_NULL(ring)) return;

+ drm_sched_fini(&ring->sched); + msm_fence_context_free(ring->fctx);

msm_gem_kernel_put(ring->bo, ring->gpu->aspace); diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.h b/drivers/gpu/drm/msm/msm_ringbuffer.h index fe55d4a1aa16..d8c63df4e9ca 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.h +++ b/drivers/gpu/drm/msm/msm_ringbuffer.h @@ -7,6 +7,7 @@ #ifndef __MSM_RINGBUFFER_H__ #define __MSM_RINGBUFFER_H__

+#include "drm/gpu_scheduler.h" #include "msm_drv.h"

#define rbmemptr(ring, member) \ @@ -40,8 +41,19 @@ struct msm_ringbuffer { struct drm_gem_object *bo; uint32_t *start, *end, *cur, *next;

+ /* + * The job scheduler for this ring. + */ + struct drm_gpu_scheduler sched; + /* * List of in-flight submits on this ring. Protected by submit_lock. + * + * Currently just submits that are already written into the ring, not + * submits that are still in drm_gpu_scheduler's queues. At a later + * step we could probably move to letting drm_gpu_scheduler manage + * hangcheck detection and keep track of submit jobs that are in- + * flight. */ struct list_head submits; spinlock_t submit_lock; diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c index 66f8d0fb38b0..682ba2a7c0ec 100644 --- a/drivers/gpu/drm/msm/msm_submitqueue.c +++ b/drivers/gpu/drm/msm/msm_submitqueue.c @@ -14,6 +14,8 @@ void msm_submitqueue_destroy(struct kref *kref)

idr_destroy(&queue->fence_idr);

+ drm_sched_entity_destroy(&queue->entity); + msm_file_private_put(queue->ctx);

kfree(queue); @@ -64,6 +66,9 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx, { struct msm_drm_private *priv = drm->dev_private; struct msm_gpu_submitqueue *queue; + struct msm_ringbuffer *ring; + struct drm_gpu_scheduler *sched; + int ret;

if (!ctx) return -ENODEV; @@ -83,6 +88,27 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx, queue->flags = flags; queue->prio = prio;

+ ring = priv->gpu->rb[prio]; + sched = &ring->sched; + + /* + * TODO we can allow more priorities than we have ringbuffers by + * mapping: + * + * ring = prio / 3; + * ent_prio = DRM_SCHED_PRIORITY_MIN + (prio % 3); + * + * Probably avoid using DRM_SCHED_PRIORITY_KERNEL as that is + * treated specially in places. + */ + ret = drm_sched_entity_init(&queue->entity, + DRM_SCHED_PRIORITY_NORMAL, + &sched, 1, NULL); + if (ret) { + kfree(queue); + return ret; + } + write_lock(&ctx->queuelock);

queue->ctx = msm_file_private_get(ctx);