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f54d186700
I plan to usurp the short name of struct fence for a core kernel struct, and so I need to rename the specialised fence/timeline for DMA operations to make room. A consensus was reached in https://lists.freedesktop.org/archives/dri-devel/2016-July/113083.html that making clear this fence applies to DMA operations was a good thing. Since then the patch has grown a bit as usage increases, so hopefully it remains a good thing! (v2...: rebase, rerun spatch) v3: Compile on msm, spotted a manual fixup that I broke. v4: Try again for msm, sorry Daniel coccinelle script: @@ @@ - struct fence + struct dma_fence @@ @@ - struct fence_ops + struct dma_fence_ops @@ @@ - struct fence_cb + struct dma_fence_cb @@ @@ - struct fence_array + struct dma_fence_array @@ @@ - enum fence_flag_bits + enum dma_fence_flag_bits @@ @@ ( - fence_init + dma_fence_init | - fence_release + dma_fence_release | - fence_free + dma_fence_free | - fence_get + dma_fence_get | - fence_get_rcu + dma_fence_get_rcu | - fence_put + dma_fence_put | - fence_signal + dma_fence_signal | - fence_signal_locked + dma_fence_signal_locked | - fence_default_wait + dma_fence_default_wait | - fence_add_callback + dma_fence_add_callback | - fence_remove_callback + dma_fence_remove_callback | - fence_enable_sw_signaling + dma_fence_enable_sw_signaling | - fence_is_signaled_locked + dma_fence_is_signaled_locked | - fence_is_signaled + dma_fence_is_signaled | - fence_is_later + dma_fence_is_later | - fence_later + dma_fence_later | - fence_wait_timeout + dma_fence_wait_timeout | - fence_wait_any_timeout + dma_fence_wait_any_timeout | - fence_wait + dma_fence_wait | - fence_context_alloc + dma_fence_context_alloc | - fence_array_create + dma_fence_array_create | - to_fence_array + to_dma_fence_array | - fence_is_array + dma_fence_is_array | - trace_fence_emit + trace_dma_fence_emit | - FENCE_TRACE + DMA_FENCE_TRACE | - FENCE_WARN + DMA_FENCE_WARN | - FENCE_ERR + DMA_FENCE_ERR ) ( ... ) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161025120045.28839-1-chris@chris-wilson.co.uk
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* seqno-fence, using a dma-buf to synchronize fencing
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*
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* Copyright (C) 2012 Texas Instruments
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* Copyright (C) 2012-2014 Canonical Ltd
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* Authors:
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* Rob Clark <robdclark@gmail.com>
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* Maarten Lankhorst <maarten.lankhorst@canonical.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/seqno-fence.h>
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static const char *seqno_fence_get_driver_name(struct dma_fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->get_driver_name(fence);
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}
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static const char *seqno_fence_get_timeline_name(struct dma_fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->get_timeline_name(fence);
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}
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static bool seqno_enable_signaling(struct dma_fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->enable_signaling(fence);
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}
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static bool seqno_signaled(struct dma_fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->signaled && seqno_fence->ops->signaled(fence);
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}
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static void seqno_release(struct dma_fence *fence)
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{
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struct seqno_fence *f = to_seqno_fence(fence);
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dma_buf_put(f->sync_buf);
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if (f->ops->release)
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f->ops->release(fence);
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else
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dma_fence_free(&f->base);
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}
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static signed long seqno_wait(struct dma_fence *fence, bool intr,
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signed long timeout)
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{
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struct seqno_fence *f = to_seqno_fence(fence);
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return f->ops->wait(fence, intr, timeout);
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}
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const struct dma_fence_ops seqno_fence_ops = {
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.get_driver_name = seqno_fence_get_driver_name,
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.get_timeline_name = seqno_fence_get_timeline_name,
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.enable_signaling = seqno_enable_signaling,
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.signaled = seqno_signaled,
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.wait = seqno_wait,
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.release = seqno_release,
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};
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EXPORT_SYMBOL(seqno_fence_ops);
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