linux-kernel - [PATCH 4.4 v1 13/17] printk: Adjust system

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Message-Id: <1739170545-25011-14-git-send-email-kazuhiro3.hayashi@toshiba.co.jp>
Date: Mon, 10 Feb 2025 15:55:41 +0900
From: Kazuhiro Hayashi <kazuhiro3.hayashi@...hiba.co.jp>
To: linux-kernel@...r.kernel.org, linux-rt-devel@...ts.linux.dev,
        cip-dev@...ts.cip-project.org
Cc: bigeasy@...utronix.de, tglx@...utronix.de, rostedt@...dmis.org,
        linux-rt-users@...r.kernel.org, pavel@...x.de
Subject: [PATCH 4.4 v1 13/17] printk: Adjust system_state checks

From: Thomas Gleixner <tglx@...utronix.de>

commit ff48cd26fc4889b9deb5f9333d3c61746e450b7f upstream.

To enable smp_processor_id() and might_sleep() debug checks earlier, it's
required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING.

Adjust the system_state check in boot_delay_msec() to handle the extra
states.

Conflicts: kernel/printk/printk.c
cf775444 replace the third condition that boot_delay_msec() returns
immediately with suppress_message_printing(). This does not affect
system_state check.

Tested-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20170516184736.027534895@linutronix.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Kazuhiro Hayashi <kazuhiro3.hayashi@...hiba.co.jp>
---
 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 d8e0790f56cb..8d1e081bf9fc 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1077,7 +1077,7 @@ static void boot_delay_msec(int level)
 	unsigned long long k;
 	unsigned long timeout;
 
-	if ((boot_delay == 0 || system_state != SYSTEM_BOOTING)
+	if ((boot_delay == 0 || system_state >= SYSTEM_RUNNING)
 		|| (level >= console_loglevel && !ignore_loglevel)) {
 		return;
 	}
-- 
2.30.2