Re: [PATCH v10 06/14] unwind_user/deferred: Add deferred unwinding interface

[Steven Rostedt]

On Wed, 18 Jun 2025 11:37:06 -0400
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> > What about two CPUs managing to request an unwind at exactly the same
> > time?  
> 
> It's mapped to a task. As long as each timestamp is unique for a task it
> should be fine. As the trace can record the current->pid along with the
> timestamp to map to the unique user space stack trace.
> 
> As for resolution, as long as there can't be two system calls back to back
> within the same time stamp. Otherwise, yeah, we have an issue.

I'll add a comment that states this as a constraint.

-- Steve