Re: [PATCH v5] dma-buf: add some tracepoints to debug.

[Steven Rostedt]

On Mon,  1 Dec 2025 19:21:48 +0800
Xiang Gao <gxxa03070...@gmail.com> wrote:

> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -35,6 +35,17 @@
>  
>  #include "dma-buf-sysfs-stats.h"
>  
> +#define CREATE_TRACE_POINTS
> +#include <trace/events/dma_buf.h>
> +

From a tracing point of view I'm OK with this patch, but this macro really
needs a comment.

-- Steve


> +#define DMA_BUF_TRACE(FUNC, ...)                  \
> +    do {                                          \
> +        if (FUNC##_enabled()) {                   \
> +            guard(spinlock)(&dmabuf->name_lock); \
> +            FUNC(__VA_ARGS__);                    \
> +        }                                         \
> +    } while (0)
> +
>  static inline int is_dma_buf_file(struct file *);
>  
>  static DEFINE_MUTEX(dmabuf_list_mutex);