[PATCH v5 11/20] drm/etnaviv: Use scheduler dependency handling

Daniel Vetter
2021-08-05T10:47:59Z

We need to pull the drm_sched_job_init much earlier, but that's very
minor surgery.

v2: Actually fix up cleanup paths by calling drm_sched_job_init, which
I wanted to to in the previous round (and did, for all other drivers).
Spotted by Lucas.

v3: Rebase over renamed functions to add dependencies.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: etnaviv@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
---
drivers/gpu/drm/etnaviv/etnaviv_gem.h | 5 +-
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 60 ++++++++++---------
drivers/gpu/drm/etnaviv/etnaviv_sched.c | 63 +-------------------
drivers/gpu/drm/etnaviv/etnaviv_sched.h | 3 +-
4 files changed, 37 insertions(+), 94 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
index 98e60df882b6..63688e6e4580 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
@@ -80,9 +80,6 @@ struct etnaviv_gem_submit_bo {
u64 va;
struct etnaviv_gem_object *obj;
struct etnaviv_vram_mapping *mapping;
- struct dma_fence *excl;
- unsigned int nr_shared;
- struct dma_fence **shared;
};

/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
@@ -95,7 +92,7 @@ struct etnaviv_gem_submit {
struct etnaviv_file_private *ctx;
struct etnaviv_gpu *gpu;
struct etnaviv_iommu_context *mmu_context, *prev_mmu_context;
- struct dma_fence *out_fence, *in_fence;
+ struct dma_fence *out_fence;
int out_fence_id;
struct list_head node; /* GPU active submit list */
struct etnaviv_cmdbuf cmdbuf;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index 4dd7d9d541c0..e3d43678eb09 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -188,16 +188,11 @@ static int submit_fence_sync(struct etnaviv_gem_submit *submit)
if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT)
continue;

- if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
- ret = dma_resv_get_fences(robj, &bo->excl,
- &bo->nr_shared,
- &bo->shared);
- if (ret)
- return ret;
- } else {
- bo->excl = dma_resv_get_excl_unlocked(robj);
- }
-
+ ret = drm_sched_job_add_implicit_dependencies(&submit->sched_job,
+ &bo->obj->base,
+ bo->flags & ETNA_SUBMIT_BO_WRITE);
+ if (ret)
+ return ret;
}

return ret;
@@ -403,8 +398,6 @@ static void submit_cleanup(struct kref *kref)

wake_up_all(&submit->gpu->fence_event);

- if (submit->in_fence)
- dma_fence_put(submit->in_fence);
if (submit->out_fence) {
/* first remove from IDR, so fence can not be found anymore */
mutex_lock(&submit->gpu->fence_lock);
@@ -529,7 +522,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &submit->cmdbuf,
ALIGN(args->stream_size, 8) + 8);
if (ret)
- goto err_submit_objects;
+ goto err_submit_put;

submit->ctx = file->driver_priv;
etnaviv_iommu_context_get(submit->ctx->mmu);
@@ -537,51 +530,62 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
submit->exec_state = args->exec_state;
submit->flags = args->flags;

+ ret = drm_sched_job_init(&submit->sched_job,
+ &ctx->sched_entity[args->pipe],
+ submit->ctx);
+ if (ret)
+ goto err_submit_put;
+
ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

if ((priv->mmu_global->version != ETNAVIV_IOMMU_V2) &&
!etnaviv_cmd_validate_one(gpu, stream, args->stream_size / 4,
relocs, args->nr_relocs)) {
ret = -EINVAL;
- goto err_submit_objects;
+ goto err_submit_job;
}

if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
- submit->in_fence = sync_file_get_fence(args->fence_fd);
- if (!submit->in_fence) {
+ struct dma_fence *in_fence = sync_file_get_fence(args->fence_fd);
+ if (!in_fence) {
ret = -EINVAL;
- goto err_submit_objects;
+ goto err_submit_job;
}
+
+ ret = drm_sched_job_add_dependency(&submit->sched_job,
+ in_fence);
+ if (ret)
+ goto err_submit_job;
}

ret = submit_pin_objects(submit);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

ret = submit_reloc(submit, stream, args->stream_size / 4,
relocs, args->nr_relocs);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

ret = submit_perfmon_validate(submit, args->exec_state, pmrs);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

memcpy(submit->cmdbuf.vaddr, stream, args->stream_size);

ret = submit_lock_objects(submit, &ticket);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

ret = submit_fence_sync(submit);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

- ret = etnaviv_sched_push_job(&ctx->sched_entity[args->pipe], submit);
+ ret = etnaviv_sched_push_job(submit);
if (ret)
- goto err_submit_objects;
+ goto err_submit_job;

submit_attach_object_fences(submit);

@@ -595,7 +599,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
sync_file = sync_file_create(submit->out_fence);
if (!sync_file) {
ret = -ENOMEM;
- goto err_submit_objects;
+ goto err_submit_job;
}
fd_install(out_fence_fd, sync_file->file);
}
@@ -603,7 +607,9 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
args->fence_fd = out_fence_fd;
args->fence = submit->out_fence_id;

-err_submit_objects:
+err_submit_job:
+ drm_sched_job_cleanup(&submit->sched_job);
+err_submit_put:
etnaviv_submit_put(submit);

err_submit_ww_acquire:
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
index 180bb633d5c5..2bbbd6ccc95e 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
@@ -17,58 +17,6 @@ module_param_named(job_hang_limit, etnaviv_job_hang_limit, int , 0444);
static int etnaviv_hw_jobs_limit = 4;
module_param_named(hw_job_limit, etnaviv_hw_jobs_limit, int , 0444);

-static struct dma_fence *
-etnaviv_sched_dependency(struct drm_sched_job *sched_job,
- struct drm_sched_entity *entity)
-{
- struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
- struct dma_fence *fence;
- int i;
-
- if (unlikely(submit->in_fence)) {
- fence = submit->in_fence;
- submit->in_fence = NULL;
-
- if (!dma_fence_is_signaled(fence))
- return fence;
-
- dma_fence_put(fence);
- }
-
- for (i = 0; i < submit->nr_bos; i++) {
- struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
- int j;
-
- if (bo->excl) {
- fence = bo->excl;
- bo->excl = NULL;
-
- if (!dma_fence_is_signaled(fence))
- return fence;
-
- dma_fence_put(fence);
- }
-
- for (j = 0; j < bo->nr_shared; j++) {
- if (!bo->shared[j])
- continue;
-
- fence = bo->shared[j];
- bo->shared[j] = NULL;
-
- if (!dma_fence_is_signaled(fence))
- return fence;
-
- dma_fence_put(fence);
- }
- kfree(bo->shared);
- bo->nr_shared = 0;
- bo->shared = NULL;
- }
-
- return NULL;
-}
-
static struct dma_fence *etnaviv_sched_run_job(struct drm_sched_job *sched_job)
{
struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
@@ -140,29 +88,22 @@ static void etnaviv_sched_free_job(struct drm_sched_job *sched_job)
}

static const struct drm_sched_backend_ops etnaviv_sched_ops = {
- .dependency = etnaviv_sched_dependency,
.run_job = etnaviv_sched_run_job,
.timedout_job = etnaviv_sched_timedout_job,
.free_job = etnaviv_sched_free_job,
};

-int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,
- struct etnaviv_gem_submit *submit)
+int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit)
{
int ret = 0;

/*
* Hold the fence lock across the whole operation to avoid jobs being
* pushed out of order with regard to their sched fence seqnos as
- * allocated in drm_sched_job_init.
+ * allocated in drm_sched_job_arm.
*/
mutex_lock(&submit->gpu->fence_lock);

- ret = drm_sched_job_init(&submit->sched_job, sched_entity,
- submit->ctx);
- if (ret)
- goto out_unlock;
-
drm_sched_job_arm(&submit->sched_job);

submit->out_fence = dma_fence_get(&submit->sched_job.s_fence->finished);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.h b/drivers/gpu/drm/etnaviv/etnaviv_sched.h
index c0a6796e22c9..baebfa069afc 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_sched.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.h
@@ -18,7 +18,6 @@ struct etnaviv_gem_submit *to_etnaviv_submit(struct drm_sched_job *sched_job)

int etnaviv_sched_init(struct etnaviv_gpu *gpu);
void etnaviv_sched_fini(struct etnaviv_gpu *gpu);
-int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,
- struct etnaviv_gem_submit *submit);
+int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit);

#endif /* __ETNAVIV_SCHED_H__ */
--
2.32.0