diff options
| author | gaoxiang17 <gaoxiang17@xiaomi.com> | 2026-01-09 19:54:11 +0800 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2026-01-21 13:27:54 +0100 |
| commit | 3b3ddafde1c2b5262628b4463c7b6f4ccc6430b5 (patch) | |
| tree | f5d99afeb7bed3bacddb792d4c1d2607fffda8d7 /include/trace/events | |
| parent | d51e390ae84857a999ad2046e074e97663e98e36 (diff) | |
| download | linux-next-3b3ddafde1c2b5262628b4463c7b6f4ccc6430b5.tar.gz linux-next-3b3ddafde1c2b5262628b4463c7b6f4ccc6430b5.zip | |
dma-buf: add some tracepoints to debug.
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
Diffstat (limited to 'include/trace/events')
| -rw-r--r-- | include/trace/events/dma_buf.h | 50 |
1 files changed, 26 insertions, 24 deletions
diff --git a/include/trace/events/dma_buf.h b/include/trace/events/dma_buf.h index 35f8140095f4..3bb88d05bcc8 100644 --- a/include/trace/events/dma_buf.h +++ b/include/trace/events/dma_buf.h @@ -15,15 +15,15 @@ DECLARE_EVENT_CLASS(dma_buf, TP_ARGS(dmabuf), TP_STRUCT__entry( - __string(exp_name, dmabuf->exp_name) - __field(size_t, size) - __field(ino_t, ino) + __string( exp_name, dmabuf->exp_name) + __field( size_t, size) + __field( ino_t, ino) ), TP_fast_assign( __assign_str(exp_name); - __entry->size = dmabuf->size; - __entry->ino = dmabuf->file->f_inode->i_ino; + __entry->size = dmabuf->size; + __entry->ino = dmabuf->file->f_inode->i_ino; ), TP_printk("exp_name=%s size=%zu ino=%lu", @@ -40,21 +40,21 @@ DECLARE_EVENT_CLASS(dma_buf_attach_dev, TP_ARGS(dmabuf, attach, is_dynamic, dev), TP_STRUCT__entry( - __string(dev_name, dev_name(dev)) - __string(exp_name, dmabuf->exp_name) - __field(size_t, size) - __field(ino_t, ino) - __field(struct dma_buf_attachment *, attach) - __field(bool, is_dynamic) + __string( dev_name, dev_name(dev)) + __string( exp_name, dmabuf->exp_name) + __field( size_t, size) + __field( ino_t, ino) + __field( struct dma_buf_attachment *, attach) + __field( bool, is_dynamic) ), TP_fast_assign( __assign_str(dev_name); __assign_str(exp_name); - __entry->size = dmabuf->size; - __entry->ino = dmabuf->file->f_inode->i_ino; - __entry->is_dynamic = is_dynamic; - __entry->attach = attach; + __entry->size = dmabuf->size; + __entry->ino = dmabuf->file->f_inode->i_ino; + __entry->is_dynamic = is_dynamic; + __entry->attach = attach; ), TP_printk("exp_name=%s size=%zu ino=%lu attachment:%p is_dynamic=%d dev_name=%s", @@ -73,17 +73,17 @@ DECLARE_EVENT_CLASS(dma_buf_fd, TP_ARGS(dmabuf, fd), TP_STRUCT__entry( - __string(exp_name, dmabuf->exp_name) - __field(size_t, size) - __field(ino_t, ino) - __field(int, fd) + __string( exp_name, dmabuf->exp_name) + __field( size_t, size) + __field( ino_t, ino) + __field( int, fd) ), TP_fast_assign( __assign_str(exp_name); - __entry->size = dmabuf->size; - __entry->ino = dmabuf->file->f_inode->i_ino; - __entry->fd = fd; + __entry->size = dmabuf->size; + __entry->ino = dmabuf->file->f_inode->i_ino; + __entry->fd = fd; ), TP_printk("exp_name=%s size=%zu ino=%lu fd=%d", @@ -137,11 +137,13 @@ DEFINE_EVENT(dma_buf_attach_dev, dma_buf_detach, TP_ARGS(dmabuf, attach, is_dynamic, dev) ); -DEFINE_EVENT(dma_buf_fd, dma_buf_fd, +DEFINE_EVENT_CONDITION(dma_buf_fd, dma_buf_fd, TP_PROTO(struct dma_buf *dmabuf, int fd), - TP_ARGS(dmabuf, fd) + TP_ARGS(dmabuf, fd), + + TP_CONDITION(fd >= 0) ); DEFINE_EVENT(dma_buf_fd, dma_buf_get, |