From: Valentin Schneider <valentin.schneider@arm.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
Kurt Kanzenbach <kurt.kanzenbach@linutronix.de>,
paulmck@kernel.org,
Anna-Maria Gleixner <anna-maria@linutronix.de>,
catalin.marinas@arm.com, Alison Wang <alison.wang@nxp.com>,
linux-kernel@vger.kernel.org, leoyang.li@nxp.com,
vladimir.oltean@nxp.com, Thomas Gleixner <tglx@linutronix.de>,
mw@semihalf.com, will@kernel.org,
linux-arm-kernel@lists.infradead.org,
Marc Zyngier <maz@kernel.org>
Subject: Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting
Date: Mon, 03 Aug 2020 12:48:35 +0100 [thread overview]
Message-ID: <jhjime0hrvw.mognet@arm.com> (raw)
In-Reply-To: <20200803113841.pqqpo4hqfwru3upq@skbuf>
On 03/08/20 12:38, Vladimir Oltean wrote:
> On Mon, Aug 03, 2020 at 10:51:32AM +0100, Robin Murphy wrote:
>>
>> Having glanced across another thread that mentions IRQ accounting
>> recently[1], I wonder if the underlying bug here might have something do to
>> with the stuff that Marc's trying to clean up.
>>
>> Robin.
>>
>> [1] https://lore.kernel.org/linux-arm-kernel/20200624195811.435857-16-maz@kernel.org/
>
> Thanks Robin. I've applied Marc's "[PATCH v2 00/17] arm/arm64: Turning
> IPIs into normal interrupts" series and the LS1028A I'm debugging hangs
> in absolutely the same way.
>
I'm not too surprised by that, wrt accounting this mostly changes where the
stores go to and barely shuffles when they happen (slightly earlier on the
IPI handling path).
FWIW I've had 'stress-ng --hrtimers 1' running on my Juno and eMAG for ~15
minutes and haven't had a splat yet.
> -Vladimir
WARNING: multiple messages have this Message-ID (diff)
From: Valentin Schneider <valentin.schneider@arm.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: Marc Zyngier <maz@kernel.org>,
paulmck@kernel.org, Robin Murphy <robin.murphy@arm.com>,
Alison Wang <alison.wang@nxp.com>,
linux-kernel@vger.kernel.org, leoyang.li@nxp.com,
vladimir.oltean@nxp.com, will@kernel.org,
catalin.marinas@arm.com,
Kurt Kanzenbach <kurt.kanzenbach@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
mw@semihalf.com, Anna-Maria Gleixner <anna-maria@linutronix.de>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting
Date: Mon, 03 Aug 2020 12:48:35 +0100 [thread overview]
Message-ID: <jhjime0hrvw.mognet@arm.com> (raw)
In-Reply-To: <20200803113841.pqqpo4hqfwru3upq@skbuf>
On 03/08/20 12:38, Vladimir Oltean wrote:
> On Mon, Aug 03, 2020 at 10:51:32AM +0100, Robin Murphy wrote:
>>
>> Having glanced across another thread that mentions IRQ accounting
>> recently[1], I wonder if the underlying bug here might have something do to
>> with the stuff that Marc's trying to clean up.
>>
>> Robin.
>>
>> [1] https://lore.kernel.org/linux-arm-kernel/20200624195811.435857-16-maz@kernel.org/
>
> Thanks Robin. I've applied Marc's "[PATCH v2 00/17] arm/arm64: Turning
> IPIs into normal interrupts" series and the LS1028A I'm debugging hangs
> in absolutely the same way.
>
I'm not too surprised by that, wrt accounting this mostly changes where the
stores go to and barely shuffles when they happen (slightly earlier on the
IPI handling path).
FWIW I've had 'stress-ng --hrtimers 1' running on my Juno and eMAG for ~15
minutes and haven't had a splat yet.
> -Vladimir
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next prev parent reply other threads:[~2020-08-03 11:48 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 3:39 [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting Alison Wang
2020-07-29 3:39 ` Alison Wang
2020-07-29 8:40 ` Kurt Kanzenbach
2020-07-29 8:40 ` Kurt Kanzenbach
2020-07-29 8:50 ` [EXT] " Alison Wang
2020-07-29 8:50 ` Alison Wang
2020-07-29 9:49 ` Vladimir Oltean
2020-07-29 9:49 ` Vladimir Oltean
2020-07-30 7:23 ` Kurt Kanzenbach
2020-07-30 7:23 ` Kurt Kanzenbach
2020-07-30 8:22 ` Vladimir Oltean
2020-07-30 8:22 ` Vladimir Oltean
2020-08-03 8:04 ` Kurt Kanzenbach
2020-08-03 8:04 ` Kurt Kanzenbach
2020-08-03 8:16 ` Vladimir Oltean
2020-08-03 8:16 ` Vladimir Oltean
2020-08-03 9:51 ` Robin Murphy
2020-08-03 9:51 ` Robin Murphy
2020-08-03 11:38 ` Vladimir Oltean
2020-08-03 11:38 ` Vladimir Oltean
2020-08-03 11:48 ` Valentin Schneider [this message]
2020-08-03 11:48 ` Valentin Schneider
2020-08-03 13:24 ` Marc Zyngier
2020-08-03 13:24 ` Marc Zyngier
2020-08-03 10:02 ` Thomas Gleixner
2020-08-03 10:02 ` Thomas Gleixner
2020-08-03 10:49 ` Thomas Gleixner
2020-08-03 10:49 ` Thomas Gleixner
2020-08-03 11:41 ` Vladimir Oltean
2020-08-03 11:41 ` Vladimir Oltean
2020-08-03 15:13 ` Thomas Gleixner
2020-08-03 15:13 ` Thomas Gleixner
2020-08-03 15:47 ` Valentin Schneider
2020-08-03 15:47 ` Valentin Schneider
2020-08-03 16:14 ` Vladimir Oltean
2020-08-03 16:14 ` Vladimir Oltean
2020-08-03 19:22 ` Thomas Gleixner
2020-08-03 19:22 ` Thomas Gleixner
2020-08-03 23:59 ` Valentin Schneider
2020-08-03 23:59 ` Valentin Schneider
2020-08-05 8:50 ` Dietmar Eggemann
2020-08-05 8:50 ` Dietmar Eggemann
2020-08-05 13:40 ` peterz
2020-08-05 13:40 ` peterz
2020-08-05 13:56 ` Valentin Schneider
2020-08-05 13:56 ` Valentin Schneider
2020-08-05 15:31 ` peterz
2020-08-05 15:31 ` peterz
2020-08-06 9:41 ` Thomas Gleixner
2020-08-06 9:41 ` Thomas Gleixner
2020-08-06 11:45 ` peterz
2020-08-06 11:45 ` peterz
2020-08-06 13:27 ` Paul E. McKenney
2020-08-06 13:27 ` Paul E. McKenney
2020-08-06 19:03 ` Thomas Gleixner
2020-08-06 19:03 ` Thomas Gleixner
2020-08-06 20:39 ` Paul E. McKenney
2020-08-06 20:39 ` Paul E. McKenney
2020-08-06 18:58 ` Thomas Gleixner
2020-08-06 18:58 ` Thomas Gleixner
2020-08-06 9:34 ` Thomas Gleixner
2020-08-06 9:34 ` Thomas Gleixner
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