[PATCH 7/7] kgdb: Remove irq flags and local_irq_enable/disable from roundup

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

On Tue, Oct 30, 2018 at 4:46 AM Daniel Thompson
<daniel.thompson at linaro.org> wrote:
>
> On Mon, Oct 29, 2018 at 11:07:07AM -0700, Douglas Anderson wrote:
> > The function kgdb_roundup_cpus() was passed a parameter that was
> > documented as:
> >
> > > the flags that will be used when restoring the interrupts. There is
> > > local_irq_save() call before kgdb_roundup_cpus().
> >
> > Nobody used those flags.  Anyone who wanted to temporarily turn on
> > interrupts just did local_irq_enable() and local_irq_disable() without
> > looking at them.  So we can definitely remove the flags.
>
> On the whole I'd rather that this change...
>
>
> > Speaking of calling local_irq_enable(), it seems like a bad idea and
> > it caused a nice splat on my system with lockdep turned on.
> > Specifically it hit:
> >   DEBUG_LOCKS_WARN_ON(current->hardirq_context)
>
> ... and fixes for this this were in separate patches. They don't appear
> especially related.

Agreed that this is cleaner.  Done for v2.

-Doug



[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux