lkml.org 
[lkml]   [2018]   [Jul]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH -next 0/2] fs/epoll: loosen irq safety when possible
On Fri, 20 Jul 2018, Andrew Morton wrote:

>We could open-code it locally. Add a couple of
>WARN_ON_ONCE(irqs_disabled())? That might need re-benchmarking with
>Xen but surely just reading the thing isn't too expensive?

We could also pass on the responsibility to lockdep and just use
lockdep_assert_irqs_disabled(). But I guess that would be less effective
than to just open code it in epoll without lockdep -- note that over 80
places in the kernel do this.

Thanks,
Davidlohr

\
 
 \ /
  Last update: 2018-07-21 19:22    [W:0.070 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site