Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-15 Thread Uladzislau Rezki
> > Another approach is to move the spawning of ksoftirqd earlier. This > still leaves a window of vulnerability, but the window is smaller, and > thus the probablity of something needing to happen there is smaller. > Uladzislau sent out a patch that did this some weeks back. > See below the

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-14 Thread Paul E. McKenney
On Thu, Apr 15, 2021 at 01:54:18AM +0200, Thomas Gleixner wrote: > Paul, > > On Wed, Apr 14 2021 at 11:11, Paul E. McKenney wrote: > > On Wed, Apr 14, 2021 at 10:57:57AM +0200, Uladzislau Rezki wrote: > >> On Wed, Apr 14, 2021 at 09:13:22AM +0200, Sebastian Andrzej Siewior wrote: > >> At the same

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-14 Thread Thomas Gleixner
Paul, On Wed, Apr 14 2021 at 11:11, Paul E. McKenney wrote: > On Wed, Apr 14, 2021 at 10:57:57AM +0200, Uladzislau Rezki wrote: >> On Wed, Apr 14, 2021 at 09:13:22AM +0200, Sebastian Andrzej Siewior wrote: >> At the same time Paul made another patch: >> >> softirq: Don't try waking ksoftirqd

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-14 Thread Paul E. McKenney
On Wed, Apr 14, 2021 at 10:57:57AM +0200, Uladzislau Rezki wrote: > On Wed, Apr 14, 2021 at 09:13:22AM +0200, Sebastian Andrzej Siewior wrote: > > On 2021-04-12 11:36:45 [-0700], Paul E. McKenney wrote: > > > > Color me confused. I did not follow the discussion around this > > > > completely, but

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-14 Thread Uladzislau Rezki
On Wed, Apr 14, 2021 at 09:13:22AM +0200, Sebastian Andrzej Siewior wrote: > On 2021-04-12 11:36:45 [-0700], Paul E. McKenney wrote: > > > Color me confused. I did not follow the discussion around this > > > completely, but wasn't it agreed on that this rcu torture muck can wait > > > until the

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-14 Thread Sebastian Andrzej Siewior
On 2021-04-12 11:36:45 [-0700], Paul E. McKenney wrote: > > Color me confused. I did not follow the discussion around this > > completely, but wasn't it agreed on that this rcu torture muck can wait > > until the threads are brought up? > > Yes, we can cause rcutorture to wait. But in this case,

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-12 Thread Paul E. McKenney
On Mon, Apr 12, 2021 at 04:16:55PM +0200, Thomas Gleixner wrote: > On Sun, Apr 11 2021 at 13:43, tip-bot wrote: > > The following commit has been merged into the core/rcu branch of tip: > > > > Commit-ID: 1c0c4bc1ceb580851b2d76fdef9712b3bdae134b > > Gitweb: > >

Re: [tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-12 Thread Thomas Gleixner
On Sun, Apr 11 2021 at 13:43, tip-bot wrote: > The following commit has been merged into the core/rcu branch of tip: > > Commit-ID: 1c0c4bc1ceb580851b2d76fdef9712b3bdae134b > Gitweb: > https://git.kernel.org/tip/1c0c4bc1ceb580851b2d76fdef9712b3bdae134b > Author:Paul E. McKenney

[tip: core/rcu] softirq: Don't try waking ksoftirqd before it has been spawned

2021-04-11 Thread tip-bot2 for Paul E. McKenney
The following commit has been merged into the core/rcu branch of tip: Commit-ID: 1c0c4bc1ceb580851b2d76fdef9712b3bdae134b Gitweb: https://git.kernel.org/tip/1c0c4bc1ceb580851b2d76fdef9712b3bdae134b Author:Paul E. McKenney AuthorDate:Fri, 12 Feb 2021 16:20:40 -08:00