Re: [PATCH v6 1/4] tracing: Reset last_boot_info if ring buffer is reset

[Google]

On Wed, 4 Feb 2026 20:40:49 -0500
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Sun,  1 Feb 2026 12:29:07 +0900
> "Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx> wrote:
> 
> > @@ -8036,6 +8042,7 @@ tracing_snapshot_write(struct file *filp, const char __user *ubuf, size_t cnt,
> >  				tracing_reset_online_cpus(&tr->max_buffer);
> >  			else
> >  				tracing_reset_cpu(&tr->max_buffer, iter->cpu_file);
> > +			update_last_data_if_empty(tr);
> 
> Is this needed? Memory mapped buffers (which the persistent ring buffer
> is) do not have snapshot buffers.

Yeah, I did this just for consistency. But it is better to just leave
the comment here.

Thank you,

> 
> -- Steve
> 
> 
> >  		}
> >  		break;
> >  	}
> 


-- 
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>