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powerpc/watchdog: Tweak watchdog printks 

Use pr_fmt() in the watchdog code, so we don't have to say "Watchdog"
so many times.

Rather than "CPU:%d" just spell it "CPU %d", "Hard" doesn't need a
capital in the middle of a sentence, and "LOCKUP other CPUS" should be
"LOCKUP on other CPUS".

Also make it clear when a CPU self detects a lockup by spelling it
out.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-10-12 15:44:32 +11:00
parent 1d65b1c886
commit d8fa82e0e2
1 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
arch/powerpc/kernel/watchdog.c
View File

@ -6,6 +6,9 @@
*
* This uses code from arch/sparc/kernel/nmi.c and kernel/watchdog.c
*/
#define pr_fmt(fmt) "watchdog: " fmt
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
@ -108,7 +111,7 @@ static inline void wd_smp_unlock(unsigned long *flags)
static void wd_lockup_ipi(struct pt_regs *regs)
{
pr_emerg("Watchdog CPU:%d Hard LOCKUP\n", raw_smp_processor_id());
pr_emerg("CPU %d Hard LOCKUP\n", raw_smp_processor_id());
print_modules();
print_irqtrace_events(current);
if (regs)
@ -149,8 +152,8 @@ static void watchdog_smp_panic(int cpu, u64 tb)
if (cpumask_weight(&wd_smp_cpus_pending) == 0)
goto out;
pr_emerg("Watchdog CPU:%d detected Hard LOCKUP other CPUS:%*pbl\n",
cpu, cpumask_pr_args(&wd_smp_cpus_pending));
pr_emerg("CPU %d detected hard LOCKUP on other CPUs %*pbl\n",
cpu, cpumask_pr_args(&wd_smp_cpus_pending));
if (!sysctl_hardlockup_all_cpu_backtrace) {
/*
@ -193,7 +196,7 @@ static void wd_smp_clear_cpu_pending(int cpu, u64 tb)
if (unlikely(cpumask_test_cpu(cpu, &wd_smp_cpus_stuck))) {
unsigned long flags;
pr_emerg("Watchdog CPU:%d became unstuck\n", cpu);
pr_emerg("CPU %d became unstuck\n", cpu);
wd_smp_lock(&flags);
cpumask_clear_cpu(cpu, &wd_smp_cpus_stuck);
wd_smp_unlock(&flags);
@ -251,7 +254,7 @@ void soft_nmi_interrupt(struct pt_regs *regs)
}
set_cpu_stuck(cpu, tb);
pr_emerg("Watchdog CPU:%d Hard LOCKUP\n", cpu);
pr_emerg("CPU %d self-detected hard LOCKUP\n", cpu);
print_modules();
print_irqtrace_events(current);
if (regs)
@ -406,7 +409,7 @@ int __init watchdog_nmi_probe(void)
"powerpc/watchdog:online",
start_wd_on_cpu, stop_wd_on_cpu);
if (err < 0) {
pr_warn("Watchdog could not be initialized");
pr_warn("could not be initialized");
return err;
}
return 0;