forked from Minki/linux
c6af2aa9ff
Pass a boolean flag to indicate if swiotlb needs to be enabled based on the addressing needs, and replace the verbose argument with a set of flags, including one to force enable bounce buffering. Note that this patch removes the possibility to force xen-swiotlb use with the swiotlb=force parameter on the command line on x86 (arm and arm64 never supported that), but this interface will be restored shortly. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM swiotlb
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#if !defined(_TRACE_SWIOTLB_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_SWIOTLB_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(swiotlb_bounced,
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TP_PROTO(struct device *dev, dma_addr_t dev_addr, size_t size),
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TP_ARGS(dev, dev_addr, size),
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TP_STRUCT__entry(
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__string(dev_name, dev_name(dev))
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__field(u64, dma_mask)
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__field(dma_addr_t, dev_addr)
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__field(size_t, size)
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__field(bool, force)
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),
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TP_fast_assign(
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__assign_str(dev_name, dev_name(dev));
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__entry->dma_mask = (dev->dma_mask ? *dev->dma_mask : 0);
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__entry->dev_addr = dev_addr;
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__entry->size = size;
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__entry->force = is_swiotlb_force_bounce(dev);
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),
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TP_printk("dev_name: %s dma_mask=%llx dev_addr=%llx size=%zu %s",
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__get_str(dev_name),
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__entry->dma_mask,
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(unsigned long long)__entry->dev_addr,
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__entry->size,
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__entry->force ? "FORCE" : "NORMAL")
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);
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#endif /* _TRACE_SWIOTLB_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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