Re: [PATCH v1 2/4] LoongArch: Handle percpu handler address in bt_address()

[Tiezhu Yang]

On 2026/1/20 下午8:04, Huacai Chen wrote:
> Hi, Tiezhu,
>
> On Tue, Jan 20, 2026 at 5:23 PM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote:
> > After commit 4cd641a79e69 ("LoongArch: Remove unnecessary checks for
> > ORC unwinder"), the system can not boot normally under some configs,
> > there are many error messages "cannot find unwind pc at".

...

> > +#if defined(CONFIG_NUMA) && !defined(CONFIG_PREEMPT_RT)
> > +       for (int cpu = 1; cpu < num_possible_cpus(); cpu++) {
> Use nr_cpu_ids instead of num_possible_cpus() can improve performance a little.
>
> > +               int vec_sz = sizeof(exception_handlers);
> > +
> It is better to add "if (!pcpu_handlers[cpu]) continue" here.

If so, it can use for_each_possible_cpu(cpu) directly?

Thanks,
Tiezhu