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3b3ddafde1
Since we can only inspect dmabuf by iterating over process FDs or the
dmabuf_list, we need to add our own tracepoints to track its status in
real time in production.
For example:
binder:3016_1-3102 [006] ...1. 255.126521: dma_buf_export: exp_name=qcom,system size=12685312 ino=2738
binder:3016_1-3102 [006] ...1. 255.126528: dma_buf_fd: exp_name=qcom,system size=12685312 ino=2738 fd=8
binder:3016_1-3102 [006] ...1. 255.126642: dma_buf_mmap_internal: exp_name=qcom,system size=28672 ino=2739
kworker/6:1-86 [006] ...1. 255.127194: dma_buf_put: exp_name=qcom,system size=12685312 ino=2738
RenderThread-9293 [006] ...1. 316.618179: dma_buf_get: exp_name=qcom,system size=12771328 ino=2762 fd=176
RenderThread-9293 [006] ...1. 316.618195: dma_buf_dynamic_attach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0
RenderThread-9293 [006] ...1. 318.878220: dma_buf_detach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0
Signed-off-by: Xiang Gao <gaoxiang17@xiaomi.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20260109115411.115270-1-gxxa03070307@gmail.com
159 lines
3.2 KiB
C
159 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM dma_buf
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#if !defined(_TRACE_DMA_BUF_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_DMA_BUF_H
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#include <linux/dma-buf.h>
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#include <linux/tracepoint.h>
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DECLARE_EVENT_CLASS(dma_buf,
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TP_PROTO(struct dma_buf *dmabuf),
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TP_ARGS(dmabuf),
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TP_STRUCT__entry(
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__string( exp_name, dmabuf->exp_name)
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__field( size_t, size)
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__field( ino_t, ino)
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),
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TP_fast_assign(
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__assign_str(exp_name);
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__entry->size = dmabuf->size;
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__entry->ino = dmabuf->file->f_inode->i_ino;
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),
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TP_printk("exp_name=%s size=%zu ino=%lu",
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__get_str(exp_name),
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__entry->size,
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__entry->ino)
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);
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DECLARE_EVENT_CLASS(dma_buf_attach_dev,
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TP_PROTO(struct dma_buf *dmabuf, struct dma_buf_attachment *attach,
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bool is_dynamic, struct device *dev),
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TP_ARGS(dmabuf, attach, is_dynamic, dev),
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TP_STRUCT__entry(
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__string( dev_name, dev_name(dev))
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__string( exp_name, dmabuf->exp_name)
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__field( size_t, size)
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__field( ino_t, ino)
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__field( struct dma_buf_attachment *, attach)
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__field( bool, is_dynamic)
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),
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TP_fast_assign(
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__assign_str(dev_name);
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__assign_str(exp_name);
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__entry->size = dmabuf->size;
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__entry->ino = dmabuf->file->f_inode->i_ino;
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__entry->is_dynamic = is_dynamic;
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__entry->attach = attach;
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),
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TP_printk("exp_name=%s size=%zu ino=%lu attachment:%p is_dynamic=%d dev_name=%s",
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__get_str(exp_name),
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__entry->size,
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__entry->ino,
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__entry->attach,
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__entry->is_dynamic,
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__get_str(dev_name))
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);
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DECLARE_EVENT_CLASS(dma_buf_fd,
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TP_PROTO(struct dma_buf *dmabuf, int fd),
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TP_ARGS(dmabuf, fd),
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TP_STRUCT__entry(
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__string( exp_name, dmabuf->exp_name)
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__field( size_t, size)
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__field( ino_t, ino)
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__field( int, fd)
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),
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TP_fast_assign(
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__assign_str(exp_name);
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__entry->size = dmabuf->size;
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__entry->ino = dmabuf->file->f_inode->i_ino;
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__entry->fd = fd;
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),
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TP_printk("exp_name=%s size=%zu ino=%lu fd=%d",
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__get_str(exp_name),
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__entry->size,
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__entry->ino,
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__entry->fd)
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);
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DEFINE_EVENT(dma_buf, dma_buf_export,
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TP_PROTO(struct dma_buf *dmabuf),
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TP_ARGS(dmabuf)
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);
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DEFINE_EVENT(dma_buf, dma_buf_mmap_internal,
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TP_PROTO(struct dma_buf *dmabuf),
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TP_ARGS(dmabuf)
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);
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DEFINE_EVENT(dma_buf, dma_buf_mmap,
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TP_PROTO(struct dma_buf *dmabuf),
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TP_ARGS(dmabuf)
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);
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DEFINE_EVENT(dma_buf, dma_buf_put,
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TP_PROTO(struct dma_buf *dmabuf),
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TP_ARGS(dmabuf)
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);
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DEFINE_EVENT(dma_buf_attach_dev, dma_buf_dynamic_attach,
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TP_PROTO(struct dma_buf *dmabuf, struct dma_buf_attachment *attach,
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bool is_dynamic, struct device *dev),
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TP_ARGS(dmabuf, attach, is_dynamic, dev)
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);
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DEFINE_EVENT(dma_buf_attach_dev, dma_buf_detach,
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TP_PROTO(struct dma_buf *dmabuf, struct dma_buf_attachment *attach,
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bool is_dynamic, struct device *dev),
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TP_ARGS(dmabuf, attach, is_dynamic, dev)
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);
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DEFINE_EVENT_CONDITION(dma_buf_fd, dma_buf_fd,
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TP_PROTO(struct dma_buf *dmabuf, int fd),
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TP_ARGS(dmabuf, fd),
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TP_CONDITION(fd >= 0)
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);
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DEFINE_EVENT(dma_buf_fd, dma_buf_get,
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TP_PROTO(struct dma_buf *dmabuf, int fd),
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TP_ARGS(dmabuf, fd)
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);
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#endif /* _TRACE_DMA_BUF_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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