# Re: \[PATCH v12 01/14\] unwind\_user: Add user space unwinding API

- From: Mathieu Desnoyers \<mathieu.desnoyers@efficios.com\>
- Date: 2025-07-04 17:58:26 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2025/07/3121922
- Thread: https://ratatoskr.run/linux-trace-kernel/2025/07/3114813/t.md

```text
On 2025-06-30 20:53, Steven Rostedt wrote:
[...]
> diff --git a/include/linux/unwind_user.h b/include/linux/unwind_user.h
> new file mode 100644
> index 000000000000..aa7923c1384f
> --- /dev/null
> +++ b/include/linux/unwind_user.h
[...]
> +
> +int unwind_user(struct unwind_stacktrace *trace, unsigned int max_entries);
> +
> +#define for_each_user_frame(state) \
> +	for (unwind_user_start((state)); !(state)->done; unwind_user_next((state)))

You can remove the () around "state" when it's already surrounded by parentheses:

+#define for_each_user_frame(state) \
+	for (unwind_user_start(state); !(state)->done; unwind_user_next(state))

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com
```