lkml.org 
[lkml]   [2017]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 tip/core/rcu 0/13] Miscellaneous fixes for 4.12
On Wed, Apr 19, 2017 at 01:28:45PM +0200, Peter Zijlstra wrote:
>
> So the thing Maz complained about is because KVM assumes
> synchronize_srcu() is 'free' when there is no srcu_read_lock() activity.
> This series 'breaks' that.
>
> I've not looked hard enough at the new SRCU to see if its possible to
> re-instate that feature.

And with the fix I gave Maz, the parallelized version is near enough
to being free as well. It was just a stupid bug on my part: I forgot
to check for expedited when scheduling callbacks.

Thanx, Paul

\
 
 \ /
  Last update: 2017-04-19 15:04    [W:0.270 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site