lkml.org 
[lkml]   [2019]   [Jul]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] x86: Add irq spillover warning
Neil,

On Tue, 16 Jul 2019, Neil Horman wrote:
> On Tue, Jul 16, 2019 at 09:05:30PM +0200, Thomas Gleixner wrote:
> > > Because theres already a check of the same variety in do_IRQ, but if the
> > > information is available outside the hotpath, I was unaware, and am happy to
> > > update this patch to refelct that.
> >
> > Which check are you referring to?
> >
> This one:
> if (desc != VECTOR_RETRIGGERED) {
> pr_emerg_ratelimited("%s: %d.%d No irq handler for vector\n",
> __func__, smp_processor_id(),
> vector);
> I figured it was already checking one condition, another wouldn't hurt too much,
> but no worries, I'm redoing this in activate_reserved now.

That's in the slow path, when handle_irq() failed which is the unlikely case.

Thanks,

tglx

\
 
 \ /
  Last update: 2019-07-16 23:06    [W:0.046 / U:6.088 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site