From: Valentin Schneider <valentin.schneider@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>
Subject: Re: [PATCH v3 05/13] genirq: Let purely flow-masked ONESHOT irqs through unmask_threaded_irq()
Date: Thu, 12 Aug 2021 14:36:35 +0100 [thread overview]
Message-ID: <875ywa944c.mognet@arm.com> (raw)
In-Reply-To: <87bl639l8n.wl-maz@kernel.org>
On 12/08/21 08:26, Marc Zyngier wrote:
> On Tue, 29 Jun 2021 13:50:02 +0100,
> Valentin Schneider <valentin.schneider@arm.com> wrote:
>> diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
>> index ef30b4762947..e6d6d32ddcbc 100644
>> --- a/kernel/irq/manage.c
>> +++ b/kernel/irq/manage.c
>> @@ -1107,7 +1107,7 @@ static void irq_finalize_oneshot(struct irq_desc *desc,
>> desc->threads_oneshot &= ~action->thread_mask;
>>
>> if (!desc->threads_oneshot && !irqd_irq_disabled(&desc->irq_data) &&
>> - irqd_irq_masked(&desc->irq_data))
>> + (irqd_irq_masked(&desc->irq_data) | irqd_irq_flow_masked(&desc->irq_data)))
>> unmask_threaded_irq(desc);
>
> The bitwise OR looks pretty odd. It is probably fine given that both
> side of the expression are bool, but still. I can fix this locally.
>
Thomas suggested that back in v1:
https://lore.kernel.org/lkml/87v98v4lan.ffs@nanos.tec.linutronix.de/
I did look at the (arm64) disassembly diff back then and was convinced by
what I saw, though I'd have to go do that again as I can't remember much
else.
> Thanks,
>
> M.
>
> --
> Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2021-08-12 13:36 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-29 12:49 [PATCH v3 00/13] irqchip/irq-gic: Optimize masking by leveraging EOImode=1 Valentin Schneider
2021-06-29 12:49 ` [PATCH v3 01/13] genirq: Add chip flag to denote automatic IRQ (un)masking Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:49 ` [PATCH v3 02/13] genirq: Define ack_irq() and eoi_irq() helpers Valentin Schneider
2021-08-12 7:49 ` Marc Zyngier
2021-08-12 13:36 ` Valentin Schneider
2021-08-12 14:45 ` Marc Zyngier
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 03/13] genirq: Employ ack_irq() and eoi_irq() where relevant Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 04/13] genirq: Add handle_strict_flow_irq() flow handler Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 05/13] genirq: Let purely flow-masked ONESHOT irqs through unmask_threaded_irq() Valentin Schneider
2021-08-12 7:26 ` Marc Zyngier
2021-08-12 13:36 ` Valentin Schneider [this message]
2021-08-12 14:45 ` Marc Zyngier
2021-08-12 21:38 ` Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 06/13] genirq: Don't mask IRQ within flow handler if IRQ is flow-masked Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 07/13] genirq, irq-gic-v3: Make NMI flow handlers use ->irq_ack() if available Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 08/13] genirq/msi: Provide default .irq_eoi() for MSI chips Valentin Schneider
2021-08-12 15:13 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 09/13] irqchip/gic: Rely on MSI default .irq_eoi() Valentin Schneider
2021-08-12 15:12 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 10/13] genirq/msi: Provide default .irq_ack() for MSI chips Valentin Schneider
2021-08-12 15:12 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 11/13] irqchip/gic: Add .irq_ack() to GIC-based irqchips Valentin Schneider
2021-08-12 15:12 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 12/13] irqchip/gic: Convert to handle_strict_flow_irq() Valentin Schneider
2021-08-12 15:12 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
2021-06-29 12:50 ` [PATCH v3 13/13] irqchip/gic-v3: " Valentin Schneider
2021-08-12 15:12 ` [irqchip: irq/irqchip-next] " irqchip-bot for Valentin Schneider
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=875ywa944c.mognet@arm.com \
--to=valentin.schneider@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=maz@kernel.org \
--cc=tglx@linutronix.de \
--cc=vincenzo.frascino@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).