From: John Ogness <john.ogness@linutronix.de>
To: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: [PATCH printk v3 04/15] printk: wake up all waiters
Date: Wed, 20 Apr 2022 01:52:26 +0206 [thread overview]
Message-ID: <20220419234637.357112-5-john.ogness@linutronix.de> (raw)
In-Reply-To: <20220419234637.357112-1-john.ogness@linutronix.de>
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>
---
kernel/printk/printk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index f817dfb4852d..e23357002648 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -3326,7 +3326,7 @@ static void wake_up_klogd_work_func(struct irq_work *irq_work)
}
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) =
--
2.30.2
next prev parent reply other threads:[~2022-04-19 23:46 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-19 23:46 [PATCH printk v3 00/15] printk/for-next John Ogness
2022-04-19 23:46 ` [PATCH printk v3 01/15] printk: rename cpulock functions John Ogness
2022-04-19 23:46 ` [PATCH printk v3 02/15] printk: cpu sync always disable interrupts John Ogness
2022-04-19 23:46 ` [PATCH printk v3 03/15] printk: add missing memory barrier to wake_up_klogd() John Ogness
2022-04-20 12:34 ` Petr Mladek
2022-04-19 23:46 ` John Ogness [this message]
2022-04-20 12:36 ` [PATCH printk v3 04/15] printk: wake up all waiters Petr Mladek
2022-04-19 23:46 ` [PATCH printk v3 05/15] printk: wake waiters for safe and NMI contexts John Ogness
2022-04-20 13:55 ` Petr Mladek
2022-04-19 23:46 ` [PATCH printk v3 06/15] printk: get caller_id/timestamp after migration disable John Ogness
2022-04-19 23:46 ` [PATCH printk v3 07/15] printk: call boot_delay_msec() in printk_delay() John Ogness
2022-04-19 23:46 ` [PATCH printk v3 08/15] printk: add con_printk() macro for console details John Ogness
2022-04-20 14:01 ` Petr Mladek
2022-04-19 23:46 ` [PATCH printk v3 09/15] printk: refactor and rework printing logic John Ogness
2022-04-20 14:55 ` Petr Mladek
2022-04-19 23:46 ` [PATCH printk v3 10/15] printk: move buffer definitions into console_emit_next_record() caller John Ogness
2022-04-19 23:46 ` [PATCH printk v3 11/15] printk: add pr_flush() John Ogness
2022-04-20 15:10 ` Petr Mladek
2022-04-19 23:46 ` [PATCH printk v3 12/15] printk: add functions to prefer direct printing John Ogness
2022-04-19 23:46 ` [PATCH printk v3 13/15] printk: add kthread console printers John Ogness
2022-04-20 17:53 ` Petr Mladek
2022-04-20 20:02 ` John Ogness
2022-04-21 14:25 ` Petr Mladek
2022-04-19 23:46 ` [PATCH printk v3 14/15] printk: extend console_lock for proper kthread support John Ogness
2022-04-20 2:13 ` kernel test robot
2022-04-20 13:32 ` John Ogness
2022-04-20 4:04 ` kernel test robot
2022-04-21 12:41 ` Petr Mladek
2022-04-21 14:30 ` John Ogness
2022-04-22 13:03 ` Petr Mladek
2022-04-22 14:14 ` John Ogness
2022-04-22 15:15 ` Petr Mladek
2022-04-22 21:25 ` John Ogness
2022-04-25 15:18 ` Petr Mladek
2022-04-25 19:10 ` John Ogness
2022-04-19 23:46 ` [PATCH printk v3 15/15] printk: remove @console_locked John Ogness
2022-04-21 12:46 ` Petr Mladek
2022-04-21 14:40 ` [PATCH printk v3 00/15] printk/for-next Petr Mladek
2022-04-21 15:02 ` John Ogness
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