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printk: wake up all waiters 

There can be multiple tasks waiting for new records. They should
all be woken. Use wake_up_interruptible_all() instead of
wake_up_interruptible().

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220421212250.565456-5-john.ogness@linutronix.de
This commit is contained in:
John Ogness 2022-04-21 23:28:39 +02:06 committed by Petr Mladek
parent 1f5d783094
commit 938ba4084a
1 changed files with 1 additions and 1 deletions
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2
kernel/printk/printk.c
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@ -3326,7 +3326,7 @@ static void wake_up_klogd_work_func(struct irq_work *irq_work)
} }
if (pending & PRINTK_PENDING_WAKEUP) if (pending & PRINTK_PENDING_WAKEUP)
wake_up_interruptible(&log_wait); wake_up_interruptible_all(&log_wait);
} }
static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) =