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drm/msm: Pre-allocate hw_fence

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Avoid allocating memory in job_run() by pre-allocating the hw_fence.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/527832/
Link: https://lore.kernel.org/r/20230320144356.803762-2-robdclark@gmail.com
This commit is contained in:
Rob Clark 2023-03-20 07:43:23 -07:00
parent 24a9671942
commit f94e6a51e1
4 changed files with 20 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

12
drivers/gpu/drm/msm/msm_fence.c
View file

@ -99,7 +99,7 @@ static const struct dma_fence_ops msm_fence_ops = {
};
struct dma_fence *
msm_fence_alloc(struct msm_fence_context *fctx)
msm_fence_alloc(void)
{
struct msm_fence *f;
@ -107,10 +107,16 @@ msm_fence_alloc(struct msm_fence_context *fctx)
if (!f)
return ERR_PTR(-ENOMEM);
return &f->base;
}
void
msm_fence_init(struct dma_fence *fence, struct msm_fence_context *fctx)
{
struct msm_fence *f = to_msm_fence(fence);
f->fctx = fctx;
dma_fence_init(&f->base, &msm_fence_ops, &fctx->spinlock,
fctx->context, ++fctx->last_fence);
return &f->base;
}

3
drivers/gpu/drm/msm/msm_fence.h
View file

@ -61,7 +61,8 @@ void msm_fence_context_free(struct msm_fence_context *fctx);
bool msm_fence_completed(struct msm_fence_context *fctx, uint32_t fence);
void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence);
struct dma_fence * msm_fence_alloc(struct msm_fence_context *fctx);
struct dma_fence * msm_fence_alloc(void);
void msm_fence_init(struct dma_fence *fence, struct msm_fence_context *fctx);
static inline bool
fence_before(uint32_t a, uint32_t b)

8
drivers/gpu/drm/msm/msm_gem_submit.c
View file

@ -41,8 +41,16 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev,
if (!submit)
return ERR_PTR(-ENOMEM);
submit->hw_fence = msm_fence_alloc();
if (IS_ERR(submit->hw_fence)) {
ret = PTR_ERR(submit->hw_fence);
kfree(submit);
return ERR_PTR(ret);
}
ret = drm_sched_job_init(&submit->base, queue->entity, queue);
if (ret) {
kfree(submit->hw_fence);
kfree(submit);
return ERR_PTR(ret);
}

2
drivers/gpu/drm/msm/msm_ringbuffer.c
View file

@ -18,7 +18,7 @@ static struct dma_fence *msm_job_run(struct drm_sched_job *job)
struct msm_gpu *gpu = submit->gpu;
int i;
submit->hw_fence = msm_fence_alloc(fctx);
msm_fence_init(submit->hw_fence, fctx);
for (i = 0; i < submit->nr_bos; i++) {
struct drm_gem_object *obj = &submit->bos[i].obj->base;