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e9d8e02748
Each V3D queue works independently and all the dependencies between the jobs are handled through the DRM scheduler. Therefore, there is no need to use one single lock for all queues. Using it, creates unnecessary contention between different queues that can operate independently. Replace the global spinlock with per-queue locks to improve parallelism and reduce contention between different V3D queues (BIN, RENDER, TFU, CSD). This allows independent queues to operate concurrently while maintaining proper synchronization within each queue. Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> Reviewed-by: Melissa Wen <mwen@igalia.com> Link: https://lore.kernel.org/r/20250826-v3d-queue-lock-v3-3-979efc43e490@igalia.com Signed-off-by: Maíra Canal <mcanal@igalia.com>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright (C) 2017-2018 Broadcom */
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#include "v3d_drv.h"
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struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue q)
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{
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struct v3d_queue_state *queue = &v3d->queue[q];
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struct v3d_fence *fence;
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fence = kzalloc(sizeof(*fence), GFP_KERNEL);
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if (!fence)
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return ERR_PTR(-ENOMEM);
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fence->dev = &v3d->drm;
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fence->queue = q;
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fence->seqno = ++queue->emit_seqno;
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dma_fence_init(&fence->base, &v3d_fence_ops, &queue->queue_lock,
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queue->fence_context, fence->seqno);
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return &fence->base;
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}
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static const char *v3d_fence_get_driver_name(struct dma_fence *fence)
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{
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return "v3d";
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}
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static const char *v3d_fence_get_timeline_name(struct dma_fence *fence)
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{
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struct v3d_fence *f = to_v3d_fence(fence);
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switch (f->queue) {
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case V3D_BIN:
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return "v3d-bin";
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case V3D_RENDER:
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return "v3d-render";
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case V3D_TFU:
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return "v3d-tfu";
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case V3D_CSD:
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return "v3d-csd";
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default:
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return NULL;
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}
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}
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const struct dma_fence_ops v3d_fence_ops = {
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.get_driver_name = v3d_fence_get_driver_name,
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.get_timeline_name = v3d_fence_get_timeline_name,
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};
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