Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared

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To: Juri Lelli <juri.lelli@xxxxxxxxxx>
Subject: Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
From: Frederic Weisbecker <frederic@xxxxxxxxxx>
Date: Tue, 16 Jun 2020 22:46:51 +0200
Cc: fweisbec@xxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, linux-rt-users@xxxxxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20200616065757.GA446382@localhost.localdomain>
References: <20200520140402.358880-1-juri.lelli@redhat.com> <20200520162400.GA8800@lenoir> <20200520164925.GM10078@localhost.localdomain> <20200520170215.GB8800@lenoir> <20200520184710.GO10078@localhost.localdomain> <20200521004443.GB15455@lenoir> <20200521170020.GQ10078@localhost.localdomain> <20200615210743.GA21371@lenoir> <20200616065757.GA446382@localhost.localdomain>
User-agent: Mutt/1.9.4 (2018-02-28)

On Tue, Jun 16, 2020 at 08:57:57AM +0200, Juri Lelli wrote:
> Sure. Let me know if you find anything.

I managed to reproduce. With "threadirqs" and without
"tsc=reliable". I see tons of spurious TIMER softirqs.
Investigation begins! I'll let you know.

Thanks!

Follow-Ups:
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Juri Lelli

References:
- [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Juri Lelli
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Frederic Weisbecker
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Juri Lelli
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Frederic Weisbecker
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Juri Lelli
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Frederic Weisbecker
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Juri Lelli
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Frederic Weisbecker
- Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared
  - From: Juri Lelli

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