Hello, Jun,
Do you see the same hang without the patch?
Thanx, Paul
On Wed, Mar 27, 2019 at 01:50:57AM +0000, Zhang, Jun wrote:
> Helloļ¼Paul
>
> I use a new NUC (made in 2017) to test, meet the same hang. System run very
> slowly.
>
> But I use my PC (made before 2015), test V3.18.136+ patch for 12 hours, still
> well.
>
> Maybe V3.18.y don't support some new devices.
>
>
> -----Original Message-----
> From: Paul E. McKenney [mailto:[email protected]]
> Sent: Tuesday, March 26, 2019 23:56
> To: He, Bo <[email protected]>
> Cc: Greg Kroah-Hartman <[email protected]>;
> [email protected]; [email protected]; Zhang, Jun
> <[email protected]>; Xiao, Jin <[email protected]>; Bai, Jie A
> <[email protected]>
> Subject: Re: [PATCH 3.18 132/134] rcu: Do RCU GP kthread self-wakeup from
> softirq and interrupt
>
> On Tue, Mar 26, 2019 at 08:43:45AM +0000, He, Bo wrote:
> > Hi, Paul:
> > I have tried on my PC and not hit any hang issue with RCU torture test
> > for one hour, the configurations are like:
> > OS: ubuntu 16.04
> > kenrel: 3.18.136 + 3.18 rcu patch
> > CPU: Intel(R) Xeon(R) CPU E3-1225 V2 @ 3.20GHz
>
> Sounds good, please proceed!
>
> Thanx, Paul
>
> > -----Original Message-----
> > From: Paul E. McKenney <[email protected]>
> > Sent: Tuesday, March 26, 2019 12:00 AM
> > To: Greg Kroah-Hartman <[email protected]>
> > Cc: He, Bo <[email protected]>; [email protected];
> > [email protected]; Zhang, Jun <[email protected]>; Xiao, Jin
> > <[email protected]>; Bai, Jie A <[email protected]>
> > Subject: Re: [PATCH 3.18 132/134] rcu: Do RCU GP kthread self-wakeup
> > from softirq and interrupt
> >
> > On Sat, Mar 23, 2019 at 07:33:15AM +0100, Greg Kroah-Hartman wrote:
> > > On Fri, Mar 22, 2019 at 04:00:17PM +0000, He, Bo wrote:
> > > > Hi, Greg:
> > > > Can you hold on the 3.18-stable branch, it seems there are some
> > > > issue, please see the comments from Paul:
> > > >
> > > > Comments from Paul:
> > > > I subjected all of the others to light rcutorture testing, which
> > > > they passed. This v3.18 patch hung, however. Trying it again
> > > > with stock
> > > > v3.18 got the same hang, so I believe we can exonerate the patch and
> > > > give it a good firm "maybe" on 3.18.
> > > >
> > > > Worth paying special attention to further test results from 3.18.x,
> > > > though!
> > >
> > > Ok, I've dropped this from the 3.18.y queue now, thanks.
> >
> > Bo, if you know of a "y" for 3.18.y that would likely pass rcutorture
> > testing, please let me know.
> >
> > Thanx, Paul
> >
>
