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SubjectRe: [PATCH 1/1] kernel: panic: display reason at end + pr_emerg
On Sat, 8 Feb 2014 15:45:22 +0800 Fabian Frederick <fabf@skynet.be> wrote:

> Currently, booting without initrd specified on 80x25 screen
> gives a call trace followed by atkbd : Spurious ACK.
> Original message ("VFS: Unable to mount root fs") is not available.
> Of course this could happen in other situations...
>
> -This patch displays panic reason after call trace which could help
> lot of people even if it's not the very last line on screen.

Fair enough. Hate it when that happens!

> -Converting all panic.c printk(KERN_EMERG to pr_emerg(

You missed a couple.

--- a/kernel/panic.c~kernel-panicc-display-reason-at-end-pr_emerg-fix
+++ a/kernel/panic.c
@@ -275,8 +275,7 @@ unsigned long get_taint(void)
void add_taint(unsigned flag, enum lockdep_ok lockdep_ok)
{
if (lockdep_ok == LOCKDEP_NOW_UNRELIABLE && __debug_locks_off())
- printk(KERN_WARNING
- "Disabling lock debugging due to kernel taint\n");
+ pr_warn("Disabling lock debugging due to kernel taint\n");

set_bit(flag, &tainted_mask);
}
@@ -381,8 +380,7 @@ late_initcall(init_oops_id);
void print_oops_end_marker(void)
{
init_oops_id();
- printk(KERN_WARNING "---[ end trace %016llx ]---\n",
- (unsigned long long)oops_id);
+ pr_warn("---[ end trace %016llx ]---\n", (unsigned long long)oops_id);
}

/*
_


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