* [email protected] <[email protected]> wrote:
> The patch titled
> sched: Use show_regs() to improve __schedule_bug() output
> has been added to the -mm tree. Its filename is
> sched-use-show_regs-to-improve-__schedule_bug-output.patch
[...]
> */
> static noinline void __schedule_bug(struct task_struct *prev)
> {
> - printk(KERN_ERR "BUG: scheduling while atomic: %s/0x%08x/%d\n",
> - prev->comm, preempt_count(), prev->pid);
> + struct pt_regs *regs = get_irq_regs();
> +
> + printk(KERN_ERR "BUG: scheduling while atomic: %s/%d/0x%08x\n",
> + prev->comm, prev->pid, preempt_count());
> +
> debug_show_held_locks(prev);
> if (irqs_disabled())
> print_irqtrace_events(prev);
> - dump_stack();
> +
> + if (regs)
> + show_regs(regs);
> + else
> + dump_stack();
the principle looks good to me, but please implement this a bit
differently: make show_regs(NULL) fall back to dump_stack() (on all
architectures) and thus reduce the size of the scheduler (and other code
i guess).
Ingo
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