Commit be9b7b6a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'printk-for-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux 

Pull printk fix from Petr Mladek:

 - Make pr_flush() fast when consoles are suspended.

* tag 'printk-for-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk: do not wait for consoles when suspended
parents 829d680e 1ac8ec27

kernel/printk/printk.c

+11 −2
Original line number Diff line number Diff line
@@ -3380,6 +3380,7 @@ static bool __pr_flush(struct console *con, int timeout_ms, bool reset_on_progre 
		diff = 0;



		console_lock();



		for_each_console(c) {

			if (con && con != c)

				continue;
@@ -3389,11 +3390,19 @@ static bool __pr_flush(struct console *con, int timeout_ms, bool reset_on_progre 
			if (printk_seq < seq)

				diff += seq - printk_seq;

		}

		console_unlock();



		if (diff != last_diff && reset_on_progress)

		/*

		 * If consoles are suspended, it cannot be expected that they

		 * make forward progress, so timeout immediately. @diff is

		 * still used to return a valid flush status.

		 */

		if (console_suspended)

			remaining = 0;

		else if (diff != last_diff && reset_on_progress)

			remaining = timeout_ms;



		console_unlock();



		if (diff == 0 || remaining == 0)

			break;