34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
From: John Ogness <john.ogness@linutronix.de>
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Date: Fri, 13 Oct 2023 20:13:02 +0000
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Subject: [PATCH 090/134] printk: For @suppress_panic_printk check for other
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CPU in panic
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
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Currently @suppress_panic_printk is checked along with
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non-matching @panic_cpu and current CPU. This works
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because @suppress_panic_printk is only set when
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panic_in_progress() is true.
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Rather than relying on the @suppress_panic_printk semantics,
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use the concise helper function other_cpu_in_progress(). The
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helper function exists to avoid open coding such tests.
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Signed-off-by: John Ogness <john.ogness@linutronix.de>
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Reviewed-by: Petr Mladek <pmladek@suse.com>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/printk/printk.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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--- a/kernel/printk/printk.c
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+++ b/kernel/printk/printk.c
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@@ -2271,8 +2271,7 @@ asmlinkage int vprintk_emit(int facility
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if (unlikely(suppress_printk))
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return 0;
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- if (unlikely(suppress_panic_printk) &&
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- atomic_read(&panic_cpu) != raw_smp_processor_id())
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+ if (unlikely(suppress_panic_printk) && other_cpu_in_panic())
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return 0;
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if (level == LOGLEVEL_SCHED) {
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