Commit 7bec4a96 authored Mar 01, 2018 by Linus Torvalds

printk

Pull printk fix from Petr Mladek:
 "Make sure that we wake up userspace loggers. This fixes a race
  introduced by the console waiter logic during this merge window"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk:
  printk: Wake klogd when passing console_lock owner

parents 16453c9c c14376de

kernel/printk/printk.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2397,7 +2397,7 @@ void console_unlock(void)

		if (console_lock_spinning_disable_and_check()) {
		printk_safe_exit_irqrestore(flags);
		return;
		goto out;
		}

		printk_safe_exit_irqrestore(flags);
		@@ -2430,6 +2430,7 @@ void console_unlock(void)
		if (retry && console_trylock())
		goto again;

		out:
		if (wake_klogd)
		wake_up_klogd();
		}