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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 20 Jul 2022 11:31:02 +0200
Subject: [PATCH] Revert "printk: Skip console drivers on PREEMPT_RT."
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.19/older/patches-5.19-rc8-rt9.tar.xz
Revert the previous change and allow printing on consoles now that the atomic
consoles and the printing thread is available.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/printk/printk.c | 10 ----------
1 file changed, 10 deletions(-)
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -3298,16 +3298,6 @@ void console_unlock(void)
}
/*
- * On PREEMPT_RT it is not possible to invoke console drivers with
- * disabled interrupts and or preemption. Therefore all drivers are
- * skipped and the output can be retrieved from the buffer.
- */
- if (IS_ENABLED(CONFIG_PREEMPT_RT)) {
- __console_unlock();
- return;
- }
-
- /*
* Console drivers are called with interrupts disabled, so
* @console_may_schedule should be cleared before; however, we may
* end up dumping a lot of lines, for example, if called from
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