Re: RCU stall on 6.1-rc4 (and some previous releases) related to ftrace

[Steven Rostedt]

On Thu, 10 Nov 2022 18:25:41 -0300
"Guilherme G. Piccoli" <gpiccoli@xxxxxxxxxx> wrote:

> @@ -4184,6 +4184,7 @@ match_records(struct ftrace_hash *hash, char *func, int len, char *mod)
>  		if (rec->flags & FTRACE_FL_DISABLED)
>  			continue;
>  
> +		cond_resched();
>  		if (ftrace_match_record(rec, &func_g, mod_match, exclude_mod)) {
>  			ret = enter_record(hash, rec, clear_filter);
>  			if (ret < 0) {

This isn't where I would put it. I would add it after the if statement.
That is, at the end of the loop.

-- Steve