From: William McVicker <willmcvicker@google.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: "Russell King" <linux@armlinux.org.uk>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"Daniel Lezcano" <daniel.lezcano@linaro.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Alim Akhtar" <alim.akhtar@samsung.com>,
"Ingo Molnar" <mingo@kernel.org>,
"Peter Griffin" <peter.griffin@linaro.org>,
"Youngmin Nam" <youngmin.nam@samsung.com>,
"Donghoon Yu" <hoony.yu@samsung.com>,
"Rob Herring" <robh@kernel.org>,
"Saravana Kannan" <saravanak@google.com>,
"John Stultz" <jstultz@google.com>,
"Tudor Ambarus" <tudor.ambarus@linaro.org>,
"André Draszik" <andre.draszik@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>,
linux-samsung-soc@vger.kernel.org, kernel-team@android.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>
Subject: Re: [PATCH v5 4/7] clocksource/drivers/exynos_mct: Use percpu interrupts only on ARM64
Date: Fri, 24 Oct 2025 15:54:35 +0000 [thread overview]
Message-ID: <aPuhO5wn8O85krV3@google.com> (raw)
In-Reply-To: <c09387b9-3fcc-4d0e-8e29-21dee196014a@samsung.com>
On 10/24/2025, Marek Szyprowski wrote:
> On 23.10.2025 22:52, Will McVicker wrote:
> > From: Marek Szyprowski <m.szyprowski@samsung.com>
> >
> > For some unknown reasons forcing percpu interrupts for local timers
> > breaks CPU hotplug for 'little' cores on legacy ARM 32bit Exynos based
> > machines (for example Exynos5422-based Odroid-XU3/XU4 boards). Use percpu
> > flag only when driver is compiled for newer ARM64 architecture.
> >
> > Fixes: f3cec54ee3bf ("clocksource/drivers/exynos_mct: Set local timer interrupts as percpu")
>
> This tag doesn't make sense in this patchset. Simply squash this change
> with the previous one, adding the following tags:
>
> Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Link:
> https://lore.kernel.org/all/20250827102645.1964659-1-m.szyprowski@samsung.com/
Okay, no problem!
--Will
next prev parent reply other threads:[~2025-10-24 15:54 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-23 20:52 [PATCH v5 0/7] Add module support for Arm64 Exynos MCT driver Will McVicker
2025-10-23 20:52 ` [PATCH v5 1/7] ARM: make register_current_timer_delay() accessible after init Will McVicker
2025-10-23 20:52 ` [PATCH v5 2/7] clocksource/drivers/exynos_mct: Don't register as a sched_clock on arm64 Will McVicker
2025-10-23 20:52 ` [PATCH v5 3/7] clocksource/drivers/exynos_mct: Set local timer interrupts as percpu Will McVicker
2025-10-23 20:52 ` [PATCH v5 4/7] clocksource/drivers/exynos_mct: Use percpu interrupts only on ARM64 Will McVicker
2025-10-24 11:19 ` Marek Szyprowski
2025-10-24 15:54 ` William McVicker [this message]
2025-10-23 20:52 ` [PATCH v5 5/7] clocksource/drivers/exynos_mct: Fix uninitialized irq name warning Will McVicker
2025-10-23 20:52 ` [PATCH v5 6/7] clocksource/drivers/exynos_mct: Add module support Will McVicker
2025-10-24 11:14 ` Marek Szyprowski
2025-10-24 15:53 ` William McVicker
2025-10-24 16:01 ` Marek Szyprowski
2025-11-17 11:46 ` Daniel Lezcano
2025-10-23 20:52 ` [PATCH v5 7/7] arm64: exynos: Drop select CLKSRC_EXYNOS_MCT Will McVicker
2025-10-23 20:57 ` [PATCH v5 0/7] Add module support for Arm64 Exynos MCT driver William McVicker
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