blob: 9906aca51fc47eac5c60b0b6f981453f1859e91b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
From: John Ogness <john.ogness@linutronix.de>
Date: Fri, 13 Oct 2023 20:13:02 +0000
Subject: [PATCH 06/50] printk: For @suppress_panic_printk check for other CPU
in panic
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.7/older/patches-6.7-rt6.tar.xz
Currently @suppress_panic_printk is checked along with
non-matching @panic_cpu and current CPU. This works
because @suppress_panic_printk is only set when
panic_in_progress() is true.
Rather than relying on the @suppress_panic_printk semantics,
use the concise helper function other_cpu_in_progress(). The
helper function exists to avoid open coding such tests.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/printk/printk.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2270,8 +2270,7 @@ asmlinkage int vprintk_emit(int facility
if (unlikely(suppress_printk))
return 0;
- if (unlikely(suppress_panic_printk) &&
- atomic_read(&panic_cpu) != raw_smp_processor_id())
+ if (unlikely(suppress_panic_printk) && other_cpu_in_panic())
return 0;
if (level == LOGLEVEL_SCHED) {
|
