From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Will Deacon <will@kernel.org>
Cc: Chanwoo Choi <cw00.choi@samsung.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Marek Szyprowski <m.szyprowski@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 1/2] clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64
Date: Mon, 21 Jun 2021 12:18:38 +0200 [thread overview]
Message-ID: <3ba202d9-a679-834a-685f-12c6f9eb9c38@linaro.org> (raw)
In-Reply-To: <20210621101058.GB28788@willie-the-truck>
On 21/06/2021 12:10, Will Deacon wrote:
[ ... ]
>>> exynos4_mct_frc_start() is called unconditionally from probe via
>>> exynos4_clocksource_init() so as long as the mct probes first, then the
>>> arch timer should work, no? The rating shouldn't affect that.
>>
>> How do you ensure the exynos mct is probed before the arch timer ?
>>
>> The Makefile provides the right order, but the dependency is implicit.
>
> Currently, I think it's done by the order of the CPU hotplug notifiers (
> see the hunk of 6282edb72bed which touches cpuhotplug.h).
Ah, right. Indeed whatever the DT order, the cpuhotplug order solves the
dependency.
Chanwoo, are fine with this change ?
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next prev parent reply other threads:[~2021-06-21 10:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 15:43 [PATCH 0/2] Use Exynos-MCT timer as wakeup for Arm arch timer Will Deacon
2021-06-08 15:43 ` [PATCH 1/2] clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64 Will Deacon
2021-06-09 11:41 ` Krzysztof Kozlowski
2021-06-10 1:03 ` Chanwoo Choi
2021-06-16 15:25 ` Daniel Lezcano
2021-06-17 0:58 ` Chanwoo Choi
2021-06-17 21:47 ` Will Deacon
2021-06-21 9:25 ` Daniel Lezcano
2021-06-21 10:10 ` Will Deacon
2021-06-21 10:18 ` Daniel Lezcano [this message]
2021-06-22 2:40 ` Chanwoo Choi
2021-06-22 5:21 ` Daniel Lezcano
2021-06-22 6:42 ` Chanwoo Choi
2021-06-21 10:17 ` Marek Szyprowski
2021-06-21 10:24 ` Daniel Lezcano
2021-08-26 16:25 ` [tip: timers/core] " tip-bot2 for Will Deacon
2021-06-08 15:43 ` [PATCH 2/2] clocksource/drivers/exynos_mct: Mark MCT device as CLOCK_EVT_FEAT_PERCPU Will Deacon
2021-06-09 11:41 ` Krzysztof Kozlowski
2021-06-17 0:59 ` Chanwoo Choi
2021-08-26 16:25 ` [tip: timers/core] " tip-bot2 for Will Deacon
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