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Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0117-panic-Mark-emergency-section-in-warn.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/debian/patches-rt/0117-panic-Mark-emergency-section-in-warn.patch b/debian/patches-rt/0117-panic-Mark-emergency-section-in-warn.patch new file mode 100644 index 000000000..84201d25f --- /dev/null +++ b/debian/patches-rt/0117-panic-Mark-emergency-section-in-warn.patch @@ -0,0 +1,38 @@ +From: Thomas Gleixner <tglx@linutronix.de> +Date: Mon, 11 Sep 2023 15:53:04 +0000 +Subject: [PATCH 117/134] panic: Mark emergency section in warn +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz + +Mark the full contents of __warn() as an emergency section. In +this section, the CPU will not perform console output for the +printk() calls. Instead, a flushing of the console output will +triggered when exiting the emergency section. + +Co-developed-by: John Ogness <john.ogness@linutronix.de> +Signed-off-by: John Ogness <john.ogness@linutronix.de> +Signed-off-by: Thomas Gleixner (Intel) <tglx@linutronix.de> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + kernel/panic.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/kernel/panic.c ++++ b/kernel/panic.c +@@ -663,6 +663,8 @@ struct warn_args { + void __warn(const char *file, int line, void *caller, unsigned taint, + struct pt_regs *regs, struct warn_args *args) + { ++ nbcon_cpu_emergency_enter(); ++ + disable_trace_on_warning(); + + if (file) +@@ -693,6 +695,8 @@ void __warn(const char *file, int line, + + /* Just a warning, don't kill lockdep. */ + add_taint(taint, LOCKDEP_STILL_OK); ++ ++ nbcon_cpu_emergency_exit(); + } + + #ifdef CONFIG_BUG |