[lkml]   [2020]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [GIT PULL] RCU changes for v5.10

* Linus Torvalds <> wrote:

> On Mon, Oct 12, 2020 at 7:14 AM Ingo Molnar <> wrote:
> >
> > Please pull the latest core/rcu git tree from:
> >
> > git:// core-rcu-2020-10-12
> I've pulled everything but that last merge and the PREEMPT_COUNT
> stuff that came with it.
> When Paul asked whether it was ok for RCU to use preempt_count() and
> I answered in the affirmative, I didn't mean it in the sense of "RCU
> wants to force it on everybody else too".
> I'm pretty convinced that the proper fix is to simply make sure that
> rcu_free() and friends aren't run under any raw spinlocks. So even
> if the cost of preempt-count isn't that noticeable, there just isn't
> a reason for RCU to say "screw everybody else, I want this" when
> there are other alternatives.

That's certainly true - thanks for catching this & sorting it out from
the bigger pull request!



 \ /
  Last update: 2020-10-19 09:32    [W:0.163 / U:5.484 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site