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Merge branch 'for-4.13' into for-linus

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This commit is contained in:
Petr Mladek 2017-07-03 15:33:39 +02:00
commit a5707eef79
4 changed files with 50 additions and 14 deletions
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3
lib/nmi_backtrace.c
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@ -86,9 +86,11 @@ void nmi_trigger_cpumask_backtrace(const cpumask_t *mask,
bool nmi_cpu_backtrace(struct pt_regs *regs)
{
static arch_spinlock_t lock = __ARCH_SPIN_LOCK_UNLOCKED;
int cpu = smp_processor_id();
if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
arch_spin_lock(&lock);
if (regs && cpu_in_idle(instruction_pointer(regs))) {
pr_warn("NMI backtrace for cpu %d skipped: idling at pc %#lx\n",
cpu, instruction_pointer(regs));
@ -99,6 +101,7 @@ bool nmi_cpu_backtrace(struct pt_regs *regs)
else
dump_stack();
}
arch_spin_unlock(&lock);
cpumask_clear_cpu(cpu, to_cpumask(backtrace_mask));
return true;
}