AcoSail/kernel_optimize_test
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk

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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
This commit is contained in:
Linus Torvalds 2018-03-01 10:06:39 -08:00
commit 7bec4a9646
1 changed files with 2 additions and 1 deletions
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3
kernel/printk/printk.c
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@ -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();
}