Re: [PATCH 1/1] Reduce synchronize_rcu() waiting time

[Steven Rostedt]

On Mon, 27 Mar 2023 17:48:44 -0400
Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> struct my_info {
> 	/* store state info here */
> };
> 
> int main(...) {
> 	struct tracecmd_input *handle;
> 	struct my_info info;
> 	char *file = argv[1];
> 
> 	handle = tracecmd_open(file);
> 
> 	tracecmd_follow_event(handle, "rcu", "rcu_batch_start",
> 			batch_start, &info);
> 
> 	tracecmd_follow_event(handle, "rcu", "rcu_batch_end",
> 			batch_end, &info);
> 
> 	tracecmd_follow_event(handle, "rcu", "rcu_invoke_callback",
> 			invoke_callback, &info);
> 
> 	tracecmd_iterate_events(handle, NULL, 0, NULL, NULL);
> 
> 	tracecmd_close(handle);
> }

BTW, none of this code was actually tested, so I may have some syntax
errors. I just did this straight from memory, as it's so easy ;-)

-- Steve