From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
kernel@stlinux.com, Catalin Marinas <catalin.marinas@arm.com>,
Linus Walleij <linus.walleij@linaro.org>,
Jiri Slaby <jslaby@suse.cz>, Dirk Behme <dirk.behme@de.bosch.com>,
Nicolas Pitre <nico@linaro.org>,
Fabio Estevam <festevam@gmail.com>,
patches@linaro.org, Anton Vorontsov <anton.vorontsov@linaro.org>,
Kumar Gala <galak@codeaurora.org>,
"David A. Long" <dave.long@linaro.org>,
linux-serial@vger.kernel.org,
kgdb-bugreport@lists.sourceforge.net, kernel-team@android.com,
devicetree@vger.kernel.org, linaro-kernel@lists.linaro.org,
Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Jason Wessel <jason.wessel@windriver.com>,
Rob Herring <robh+dt@kernel.org>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Greg Kroah-Hartman <gregkh@linuxfoundati>
Subject: Re: [RFC v2 01/10] arm: fiq: Allow EOI to be communicated to the intc
Date: Fri, 23 May 2014 16:00:23 +0100 [thread overview]
Message-ID: <20140523150022.GW3693@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1400853478-5824-2-git-send-email-daniel.thompson@linaro.org>
On Fri, May 23, 2014 at 02:57:49PM +0100, Daniel Thompson wrote:
> +void eoi_fiq(int fiq)
> +{
> + struct irq_data *irq_data = irq_get_irq_data(fiq + fiq_start);
> + struct irq_chip *chip = irq_data_get_irq_chip(irq_data);
> +
> + if (chip->irq_eoi)
> + chip->irq_eoi(irq_data);
> +}
So what if the IRQ chip takes a spinlock? You can't take spinlocks in
FIQ context... Who checks for that kind of stuff - just hoping that
the IRQ driver doesn't take a spinlock sounds real fragile.
--
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
next prev parent reply other threads:[~2014-05-23 15:00 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-14 15:58 [RFC 0/8] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-05-14 15:58 ` [RFC 1/8] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-05-14 15:58 ` [RFC 2/8] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-05-14 15:58 ` [RFC 3/8] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-05-14 15:58 ` [RFC 4/8] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-05-14 15:58 ` [RFC 5/8] serial: amba-pl011: Pass on FIQ information to KGDB Daniel Thompson
2014-05-14 15:58 ` [RFC 6/8] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-05-14 15:58 ` [RFC 7/8] ARM: VIC: Add vic_set_fiq function to select if an interrupt should generate an IRQ or FIQ Daniel Thompson
2014-05-14 15:58 ` [RFC 8/8] arm: fiq: Hack FIQ routing backdoors into GIC and VIC Daniel Thompson
2014-05-23 13:57 ` [RFC v2 00/10] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-05-23 13:57 ` [RFC v2 01/10] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-05-23 14:59 ` Srinivas Kandagatla
2014-05-23 15:00 ` Russell King - ARM Linux [this message]
2014-05-28 15:47 ` Daniel Thompson
2014-05-23 13:57 ` [RFC v2 02/10] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-05-23 13:57 ` [RFC v2 03/10] irqchip: gic: Introduce shadow irqs for FIQ Daniel Thompson
2014-05-23 13:57 ` [RFC v2 04/10] ARM: vexpress: Extend UART with FIQ support Daniel Thompson
2014-05-23 15:04 ` Russell King - ARM Linux
2014-05-29 10:31 ` Daniel Thompson
2014-05-29 13:44 ` Rob Herring
2014-06-03 12:41 ` Daniel Thompson
2014-05-23 13:57 ` [RFC v2 05/10] ARM: STi: STiH41x: " Daniel Thompson
2014-05-23 13:57 ` [RFC v2 06/10] irqchip: vic: Introduce shadow irqs for FIQ Daniel Thompson
2014-05-23 13:57 ` [RFC v2 07/10] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-05-23 13:57 ` [RFC v2 08/10] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-05-23 13:57 ` [RFC v2 09/10] serial: amba-pl011: Pass on FIQ information to KGDB Daniel Thompson
2014-05-23 13:57 ` [RFC v2 10/10] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-05-23 14:50 ` Srinivas Kandagatla
2014-06-05 9:53 ` [RFC v3 0/9] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-06-05 9:53 ` [RFC v3 1/9] arm: fiq: arbitrary mappings from IRQ to FIQ virqs Daniel Thompson
2014-06-05 11:51 ` Russell King - ARM Linux
2014-06-05 13:08 ` Daniel Thompson
2014-06-12 8:37 ` Linus Walleij
2014-06-12 9:54 ` Daniel Thompson
2014-06-13 14:29 ` Rob Herring
2014-06-18 11:24 ` Daniel Thompson
2014-06-05 9:53 ` [RFC v3 2/9] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-05 9:53 ` [RFC v3 3/9] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-06-05 19:50 ` Nicolas Pitre
2014-06-05 9:53 ` [RFC v3 4/9] irqchip: gic: Introduce shadow irqs for FIQ Daniel Thompson
2014-06-06 7:46 ` Peter De Schrijver
2014-06-06 9:23 ` Daniel Thompson
2014-06-05 9:53 ` [RFC v3 5/9] irqchip: vic: " Daniel Thompson
2014-06-05 9:53 ` [RFC v3 6/9] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-05 9:53 ` [RFC v3 7/9] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-06-05 9:53 ` [RFC v3 8/9] serial: amba-pl011: Pass on FIQ information to KGDB Daniel Thompson
2014-06-05 9:53 ` [RFC v3 9/9] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 00/13] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 01/13] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 02/13] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 03/13] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 04/13] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 05/13] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 06/13] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 07/13] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 08/13] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 09/13] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-06-20 0:36 ` Greg Kroah-Hartman
2014-06-19 10:38 ` [PATCH v4 10/13] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-06-20 0:36 ` Greg Kroah-Hartman
2014-06-19 10:38 ` [PATCH v4 11/13] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-06-19 11:29 ` Srinivas Kandagatla
2014-06-19 11:46 ` Daniel Thompson
2014-06-19 11:58 ` Maxime Coquelin
2014-06-19 12:01 ` Srinivas Kandagatla
2014-06-19 13:12 ` Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 12/13] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 13/13] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
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